Science topics: Biological ScienceFaunisticsMammalogyMammals
Mammals - Science topic
Warm-blooded vertebrate animals belonging to the class Mammalia, including all that possess hair and suckle their young.
Questions related to Mammals
i need to find the common regions between them to make a tree that describes the relation between them or may i use specific gp of genes in the comparison instead of the whole genome?
I am looking for data from mammals ideally, but I will take anything to be honest. I am getting to grips with bioinformatics and need a practice data set with which I can go through the steps of filtering and trimming and mapping to a reference genome etc..
If anyone also has any advice on tools used subsequently for analysis such as MethylKit that would be awesome.
Hi everyone 😉
Does anyone have any tips for a good book that has lots of information about wildlife. Preferably mammals that live in Europe.
Thanks in advance !😀
The Pfizer mRNA vaccines contain
(4-hydroxybutyl) azanediyl) bis(hexane-6,1-diyl) bis(2-hexyldecanoate) ALC-0315
also known as 6-[N-6-(2-hexyldecanoyloxy)hexyl-N-(4-hydroxybutyl)amino]hexyl 2-hexyldecanoate, sold as a yellow oil.
It has 2 chiral centres so potentially the different optical isomers will have different toxic properties in Humans as found for Thalidomide.
Has any effort been made to separate isomers?
ALC-0315 has not had detailed toxicology studies, however in rats the half-life for transfer from blood to other organs was 139 hours, indicating it is very strongly bound inside the bodies of mammals. Would there be any difference in binding and metabolism of the isomers?
Which enzymes or other essential biological molecules might be expected to interact with ALC-0315?
I would like to understand how different load on the muscle affects the development of bone tissue, the presence of tubercles on the bones, thickening, etc.
Hi, do you guys know some experts in isolating novel/new/unculturable bacteria from mammals?
Thank you in advanced
I have studied seasonal multiscale space use patterns of mammals through camera traps implementing a GLMM framework, and took site as a random factor. I used all GIS-based covariates (except for one i.e. human photo-capture rate as a surrogate for disturbance) in this analysis, and found significant relationships between mammal occurrence and some of the covariates. In this context, I was wondering if I can prepare a habitat suitability map out of it (the best-selected models), it would be really great, but unfortunately, I couldn't find enough literature that can actually guide me.
All comments are welcome and thank you in advance.
Hi. I have a question of the MHCII expression in mammal. What I know so far is that the expression of MHCII is codominant, alleles from both mom and dad will be expressed. However, I would like to if the genotype of MHCII affect the phenotype. For example, would the MHCII wild type animals express more MHCII protein than the MHCII heterozygous animals? Also, would the MHCII WT animals process more antigen and have a stronger immune response than the MHCII heterozygous animals? Assuming only one specific type of antigen is processed in this case.
It will be very helpful if you can post some related literature. Thanks for your time!
We are trying to persuade farmers and hunters not to kill wolves, lynxes, bears, otters, and beavers. But we need a financially based argument that these mammals are beneficial for the ecosystem and save money if we keep them alive. Is there any literature that estimates how much money will one wolf/lynx/bear/otter(/beaver save per year?
When pathogens from diseased mammals are isolated with Vero cells or other cell lines, the probability of success is very low. What are the suggestions for cell culture and pathogen isolation?
I need to compare Tgf-beta in fish and in mammals and I need a western blotting kit that can target the protein sequence with equal accuracy?
we are studying the effect of the presence of the golden jackal in the northeast of Italy on a red fox, wild cat and ungulates and other species; can you share any ideas, data or observations on the role of the golden jackal on the dynamics of mammals, of medium and large size, and birds?
Climate change is a prolonged process and does not affect an ecosystem suddenly. Camera traps do not provide any information regarding how precipitation and temperature is fluctuating daily, seasonal, or yearly. In this case, which alternate method could be more effective to monitor the impact of climate change on hibernation in mammals?
But If camera traps could also be used two questions arise here:
what should be the duration of the study? I don't think 3-4 years of monitoring could be enough to get reliable results. Secondly, only camera traps are enough to monitor the animals?
Paragonimiasis is a parasitic disease that can be transmitted through the consumption of infected freshwater crabs by mammals including humans. Infective larval forms of the parasite has been found in crabs but not so much adults were found in humans. Therefore, I think that the other mammals in the vicinity of the freshwater crab distribution must be responsible for the continuation of the life cycle of Paragonimus westermani. However, I need to find out if the wild mammals near freshwater bodies are infected with the parasite by examining their stools for parasite eggs. How can I do this?
My study revolves around the cuvier's gazelle ( Gazella cuvieri ) in its natural habitat.
How can I get the most of my days in the field, and come back with as much information as I can.
A precise protocol would be appreciated, the study focus is population dynamics and overall population behavior.
Mammals ravage the nests of artificial nesting birds. There are probably modern methods that display data from burglary attempts, etc.
" Given lenalidomide’s mechanism of action, it is intriguing that IMiDs and proteasome inhibitors are synergistic in the treatment of multiple myeloma.(24) Recent evidence suggests that this synergy may result from the pharmacokinetic properties and dosing schedules of these drugs. Although treatment with proteasome inhibitors can block lenalidomide induced degradation of IKZF1 and IKZF3 in vitro,(14) this effect depends on both the order of administration and the dose. When the drugs are administered at the same time, lenalidomide-induced degradation occurs before the onset of proteasomal blockade. (25) " excerpt from  below.
 BLOOD SPOTLIGHT| NOVEMBER 19, 2015
The novel mechanism of lenalidomide activity
Blood (2015) 126 (21): 2366–2369.
" In this article, we review the recently recognized mechanisms of action of lenalidomide and discuss the most recent clinical data regarding its use in patients with both 5q− MDS as well as non-5q− MDS. " excerpt from  below.
First published: 13 February 2017
 Lenalidomide use in myelodysplastic syndromes: Insights into the biologic mechanisms and clinical applications
Maximilian Stahl MD,Amer M. Zeidan MBBS, MHS
Jacob Keevan & William D Figg (2014)
Updated Dec 26th 2021 as I know have some publications of relevance to Lenalidomide. Top of my list are  and  at the moment they are most recent publications I have found.  added Jan 24 2023 - still need to review but it pre-dates  and 
Some additional references for background.
Damato AR, Katumba RGN, Luo J, Atluri H, Talcott GR, Govindan A, Slat EA, Weilbaecher KN, Tao Y, Huang J, Butt OH, Ansstas G, Johanns TM, Chheda MG, Herzog ED, Rubin JB, Campian JL. A randomized feasibility study evaluating temozolomide circadian medicine in patients with glioma. Neurooncol Pract. 2022 Jan 31;9(3):193-200. doi: 10.1093/nop/npac003. PMID: 35601970; PMCID: PMC9113320.
Core Concept: Emerging science of chronotherapy offers big opportunities to optimize drug delivery https://lnkd.in/gpAz-28v
Optimizing circadian drug infusion schedules towards personalized cancer chronotherapy
Hill RJW, Innominato PF, Le´vi F, Ballesta A (2020) PLoS Comput Biol 16(1): e1007218. https://lnkd.in/gnCAAzk5 https://lnkd.in/g4sY-NDv
Temporal regulation of tumor growth in nocturnal mammals: In vivo studies and chemotherapeutical potential
The FASEB Journal. 2021;35:e21231.First published: 11 January 2021 https://lnkd.in/gm9mr6z
Paula M. Wagner,César G. Prucca,Fabiola N. Velazquez,Lucas G. Sosa Alderete,Beatriz L. Caputto,Mario E. Guido
Harnessing the predictive power of preclinical models for oncology drug development.
Honkala, A., Malhotra, S.V., Kummar, S. et al. Nat Rev Drug Discov (2021). https://lnkd.in/gYnT7VtF
Updated Aug 22nd 2022: Chronotherapy Clinical Trial with a different Drug which is a good background resource.
Temozolomide Chronotherapy for High Grade Glioma
Updated Jan 12th 2023: Wang, Chen, et al. "The circadian immune system." Science Immunology 7.72 (2022): eabm2465. Another good background resource.
Article The circadian immune system
I would like to answer the question about the absence of top predators effect on mammal community by using camera trap data. So,
1. What kind of study design, method and analysis are suitable to solve this question?
I am curious to know what kind of test can we apply for this dataset. Columns are categorical (Study site) variables. the active number indicates the sighting of a particular mammal species.
Rows are different types of tree species.
Any help would be appreciated
#Chi-Square #Statistics #Descriptives #ANOVA
It has long been recognised that bumble bees most often nest in abandoned mammal (usually rodent) nests, and I believe various researchers have tested the effects of mammal scent in attracting queens to field hives, but I'm not aware of any positive results. However I have not been keeping up with literature for a while and may have missed it.
Do you know of results confirming the effect of mammalian odours?
Which would be inverse to the way metabolism scales according to Kleiber’s Law, that is, inverse to the way metabolism scales as mass to a 3/4 exponent?
Which would be inverse to the way metabolism scales according to Kleiber’s Law, that is, inverse to the way metabolism scales as mass to a 3/4 exponent?
So that the rate of metabolism scaled, times longevity scaling is invariant?
Has this hypothesis been proposed? Are there are articles on the scaling of mammalian longevity?
Say a researcher was interested in determining the number of adults vs. juveniles of species X trapped during a small mammal survey. Does there exist a relatively reliable way of doing this based on standard field measurements?
Let’s say a total of 200 individuals of species X were sampled, and the following data recorded: sex, total length, tail length, hind foot length, ear length, and weight. For the sake of this question imagine no additional data is available (e.g. additional observations recorded in the field, access to collected specimen material, etc.).
- Is there a way to ascertain a point or “threshold” from a range of data based on the distribution of values to distinguish between juvenile and adult individuals with a meaningful degree of accuracy? For example, male species X with weight > 142 g = adults; < 142 g = juveniles.
- If yes, which of these measurements would be most indicative? Or perhaps a combination/ratio of more than one (e.g. ratio of hind foot length to ear height > 1 = adult, etc.)?
Thanks, and looking forward to the feedback.
The goal of the project is to collect around 200-250 samples (primarily muscle tissue) from a bushmeat market and transport to laboratory for species barcoding. DNA extraction will then be performed, followed by PCR using universal mammalian primers (and if no product is yielded, universal vertebrate primers), confirmation of product using agarose gel electrophoresis, DNA purification, Sanger Sequencing, then alignment to the lowest possible taxonomic unit. The results will be compared to reported species by the seller (to assess misidentification) as well as used to identify protected species.
Current plan is to first use the following universal mammalian primers (majority of samples expected to be mammals):
MTCB-F (Size~1420) 5'-CCHCCATAAATAGGNGAAGG-3', targets cyt b (Naidu et al 2012)
MTCH-R (Size~1420) 5'-WAGAAYTTCAGCTTTGG-3', targets cyt b (Naidu et al 2012)
Then if those don't yield products use the following universal vertebrate primers:
L1085 (Size 215) 5'-CCCAAACTGGGATTAGATACCC-3', targets 12S rRNA (Kitano et al 2007)
H1259 (Size 215) 5'-GTTTGCTGAAGATGGCGGTA-3' targets 12S rRNA (Kitano et al 2007)
Question: This is my first time performing species barcoding of any kind (and also only have minimal bench experience, background is clinical); are these appropriate primers? Any critique/advice on methodology?
Thank you so much!
There are two extant species of Hydrochoerus: Hydrochoerus isthmius, the lesser or Panamanian capybara, and the genotype species H. hydrochaeris. The latter is the more common species of capybara, found throughout most of South America, whereas the other is restricted to the northwestern side of the Andes ranging into Panama. However, H. hydrochaeris doesn't seem to have a useful common name to distinguish it from H. isthmius. It's referred to as the "capybara", but both species are capybaras, and it's never referred to as the "common capybara", "greater capybara", or "southern capybara". H. hydrochaeris is also much larger than H. isthmius (nearly twice the size of the latter species).
I am making a figure I intend to use to show to an educated layman audience, and am using capybara bones as an extant scale. I am trying to use the common name to not confuse my audience, but at the same time I want to make it clear I am referring to H. hydrochaeris and not H. isthmius so there is no confusion for people who are more familiar with scientific names. Given this, what would be the correct common name to refer to H. hydrochaeris such that I do not confuse my audience?
Xylazine is an analogue of clonidine and an agonist at the α₂ class of adrenergic receptor. It is used for sedation, anesthesia, muscle relaxation, and analgesia in animals such as horses, cattle and other non-human mammals. Veterinarians also use xylazine as an emetic, especially in cats
I am about to start a study of the microbiome in chicken (caecal content) and would like to get an opinion on the available metatranscriptomics rRNA depletion kits. I know that there are several that seem to work well for mammals but I do not know if they perform as well in other animal models.
Thank you in advance.
Chicken egg yolk is widely used in the cryopreservation experiment of mammalian sperm, especially bull, as a cryoprotectant. Regarding that, I read several publications that use egg yolk as a cryoprotectant on cryopreservation of chicken sperm. Given that egg yolk in chicken is homologous to oocytes in mammals, could this method be justified? Aren't the sperm will undergo a premature acrosomal reaction when mixed with egg yolk?
I have listed factors of each animal (mammals) species rescued during a dam inundation such as "can swim/unable to swim", "arboreal/terrestrial", "cryptic/none cryptic", frequency of capture: "common/rare" etc. What analysis can be done in order to determine the contributing factors and grouping of characteristics of the animals that influences it to be rescued? I've been suggested Principle Component Analysis (PCA) but I'm also exploring other options out there.
I am looking for research covering the morphology of human lingual papillae. Areas such as dimensions, density, distribution, histology, ultrastructure, diversity. Really this whole, seemingly under represented area of research. I see numerous papers dealing with various mammals but none specific to the human lingual surface.
I have inventory data set of vascular plants using systematic distribution and two data sets for large mammal species, 1. camera trap data set and 2. rangers' SMART patrol data set. My objectives are;
1. to find relationship between species richness of vascular plants and large mammals
2. to compare distribution of 3 herbivores in different species richness of vascular plants and forest composition (structure, density, canopy coverage, etc.)
As I have started a new research work, I am looking into the circadian rythm and genes that controll it in mammal models. In order to do this experimentally I need to find consistent molecular indicators for when the Night and Day genes are activated respectively.
Which would you consider relevant?
Do you know about any molecular markers in bronchial cell lines that indicate the expression of Night/Day genes?
How many average genetic distance values of mtDNA control region Dloop for indicative conspecific populations or valid species in Chiroptera?. Thank you
We all know numerous examples for sexual dimorphism as the result of sexual selection. Thinking of mammals and birds, males are very often bigger or more colorful and richly ornamented than females. In some species however, females and males look very much alike, (aside from a minute difference in body size maybe), they are monomorphic. Why is that?
I couldn't find an answer myself in the literature so maybe you can give me a hint!
I have been looking at weight values for rodents in the family muridae, specifically subfamilies: gerbillinae and deomyinae. I found some considerable discrepancies in the values for the same species from different references. Generally, I get similar values from sources concerned with African mammals (Mammals of Africa, Kingdon et al, 2013; Mammals of Sub-Saharan Africa, Monadjem et al, 2015; The Complete Book of the Southern African Mammals, Mills and Hes, 1997; The Contemporary Land Mammals of Egypt, Osborn and Helmy, 1982). The values I get from other sources, namely PanTheria, AnAge and Alhajeri et al (2015) are mostly similar amongst themselves but can be very different from those reported in the first (“African”) set of references.
The similarity within set cannot be solely explained as repeated citations from the same old reference; so I was wondering if it can be explained by biogeographic trends within widely distributed species. In other words, the set of references concerned with Africa is reporting species values from African populations only; while the other references report values from the world-wide distribution of the species. The observation that species with African and extra-African populations have wider ranges of values reported in PanTheria, AnAge and al-Hajeri compared to those in “African” sources for the species is consistent with this hypothesis. Furthermore, whenever a species is endemic to Africa, the two sets of references seem to largely agree.
Could somebody please corroborate/debunk this idea of mine, or suggest other explanations for these puzzling discrepancies?
Is there evidence of leg-right sidedness in parental genomic imprinting - that is, maternal alleles expressed more on one side of the body of a mammal and more paternal alleles on the other? I have a memory of hearing a report of such years ago, but I can’t find it anywhere in the literature.
I have been working on a study trying to estimate body mass in mammals using a skeletal proxy in R. My dataset has high phylogenetic signal (Pagel's Lambda = 0.9) and I am interested in removing the effects of phylogenetic signal to produce more accurate estimates of body mass.
I had tried to do this using PGLS, but PGLS ended up producing higher error rates than the same data under OLS despite the high phylogenetic signal. Part of this appears to be because there are several particular clades with long branches (e.g., Monotremata) that form regression lines above or below the line of best fit, and their phylogenetic position distorts the resulting best-fit line. I had thought PGLS took phylogenetic covariance into account when estimating values, but it looks as though it only uses phylogenetic signal into account to minimize the residuals of the best fit line. It does not put the phylogenetic covariance back into the estimation of the y-value.
I.e., the function does not go: "Taxon X is positioned as sister to Monotremata. Therefore it should deviate above or below the regression line to a degree similar to its phylogenetic distance and the mass estimate should be adjusted accordingly?"
Given this, is there any way to use a topology to estimate a value that considers phylogenetic covariance and the phylogenetic postion of the unknown taxon when estimating this value, rather than just using it to minimize the residuals when calculating the best fit line?
I am currently looking into the prevalence and effects of arthropods as predators of vertebrate brood. To do so, I'm building a database consisting of observations of arthropods predating vertebrate young that are dependent on parental care, in terrestrial systems (think for example of nestlings in birds or young mammals).
So if you, during your field work or in your free time, have observed such a predation event (or know anyone who has), please share it with me with as much detail as possible!
Thanks in advance for your help
I've been looking for a test to compare vertical stratification of mammals and none seem to fit my desire. I have two strata in the canopy and my objective is to see if the arboreal mammals use these strata differently.
I don't know the abundance of these species, but through sampling I have N of events of each species on each strata. Can I use the B-C dissimilarity to compare these strata?
If not, is there another test you'd recommend?
I would like to know some methodologies for captive condition of small carnivores in Zoos. … Read more
I would like to know some methodologies for captive condition of small carnivores (mammal) in Zoological gardens
I read a few articles related infant & dog's auditory preference. They both mentioned "baby talk" could be more attractive to infant & dog. And my team and I want to find out the reason from evo-psych. We already know one of necessary condition is high pitch, and had some data about high pitch preference for dogs (we took gaze duration to be parameter).
Our project focus on evo-psych puzzle, so we want to exclude the physical or physiological reason to explain why dog prefer high pitch. I tried to do some reviews to know physical trait of high pitch. But I almost found nothing help because I barely know the domain knowledge of acoustics. So if physical trait of high pitch could explain why mammal like human and dog has such preference, then we should reschedule our project.
Thank you for response such fundamental question.
I m very interested in Paleogene continental north Africa, manily because of the "strange position" of Laurasiatherian mammals living there that times.
But I have not found many things about paleogeography constraints.
Can you suggest me one or more articles about this topic?
Very basic stats question, I have a measure of the % females breeding each year within one mammal population and I want to test between the years. Firstly, what is the best stats for this kind of analysis? Secondly, I'm hoping to then incorporate aditional categories into the test, i.e. Total young born etc. How will this change the test?
My data looks like this:
Yr 1 Yr 2 Yr 3 Yr 4 Yr 5
% breeding 80% 60% 70% 40% 90%
Recent, I had read one paper :https://academic.oup.com/nar/article/40/22/11463/1147721. In this paper, the author identified hundreds of conserved non-coding genomic regions that were independently lost in mammals. It is very interesting. But, I want to know how do extract hundreds of CNEs (conserved non-coding element) loss events from whole-genome multiple alignment files (MAF) in specific-lineage.
Is there have some software or scripts can do it.
What are the best thermal imagers to use in the study of insectivores, rodents and carnivorous mammals in soil horizons? The ability to detect herpetocomplex with a thermal imager in natural shelters?
A new study that researchers from Tel Aviv University in Israel: They scanned the brains of more than 120 different mammals and found that brain connectivity is neither higher in humans nor dependent on the size of the brain.
“Many scientists have assumed that connectivity in the human brain is significantly higher compared to other animals, as a possible explanation for the superior functioning of the ‘human animal,'” explains the study’s first author, Prof. Yaniv Assaf. To test this assumption, Prof. Assaf and his team used a type of brain scan called diffusion MRI to scan the brains of 123 different species of mammal, including humans. It was the first time that researchers had placed the majority of these animals’ brains inside an MRI scanner.
“ the brains of all mammals, from tiny mice through humans to large bulls and dolphins, exhibit equal connectivity, and information travels with the same efficiency within them,” explains Prof. Assaf.
I´m looking for papers showing raw abundance data for different groups of animals, plants, and bacteria. I would be interested in studies on: mammals, birds, reptiles, amphibians, insects, fishes, annual plants and trees.
Any recommended paper will be of great use.
Thank you so much !
I'm looking for datasets (or databases) in which the body mass of predator and prey are presented. I'm specifically interested in terrestrial predators (snakes, mammals, birds).
An example of is Vézina, A.F., 1985. Empirical relationships between predator and prey size among terrestrial vertebrate predators. Oecologia, 67(4), pp.555-565. (unfortunately there are no associated data as it's quite an old paper).
Any tips or suggestions are more than welcome!
I am slowly putting together a very basic identification key of plant damages, to determine first if the source of the damage is living or not, and then what did it: bacteria, fungi, insects, mite, small/medium/large mammals... I was quite surprise at the first place to not find such material already produce.
I hope this material to be used by parataxonomists in Central Africa. It should therefore be accessible and well-illustrated. It also do not need to go too much into details: for example, to conclude the key at 'Insect' is fine, we do not need to know which Order of Insects did it.
I have seen quite some apps and other websites for cultivated plants, but none are quite as simple and general as what I am looking for. Maybe I was simply looking at the wrong places.
Any suggestion is welcome. Thanks.
For an upcoming book (in danish) on managament of forest biodiveistty, I would like to present a table summarizing the biodiversity value of various woody species. I wonder if there are any databases or other overviews avialable that gives insight into which species of mammals and birds that (regularly) eats the seeds from various tree genera/species. Help with be appreciated
While working on mammals, we recorded vocalisations (i.e. clicks) that could possibly be explained by echolocation. What would be the most straightforward way to test whether an animal uses echolocation? If we record the sound, can the sound structure provide any evidence? Would the ears or other physiological features of the animal provide any indication? What would be the best, straightforward approach to provide us with some evidence?
I am trying to obtain information about the specific conditions for the method of preserving feces samples for mammals ( preservative type, preservative concentrate, preservation temperature, ....) in order to perform a phylogenetic analysis.
In what free journal can I publish studies of large mammals activity patterns???, both in English and Spanish...
I'm in the process of buying new equipment to record the vocalizations of wild mammals, and have used Marantz's solid state recorders with great success in the past. However, it seems that their PMD range of recorders are not easily available anymore. I've looked around and the Tascam DR-1 portable solid state recorder seems like a good option, but I have no experience with that product.
I'd appreciate any advice on the best, portable recorders to be used in the field. Nothing too fancy (I don't expect ultrasonic vocalizations, for example), but I'd love to hear from you about the pro's and cons of different recording tools that you've used. I would need the recordings to be of good enough quality to analyze properly in programs like AviSoft.
I think if Akkermansia muciniphila has been found in breast milk, it should also be present in the milk of other mammals. Did anyone find it in raw cow's milk?
In what other foods was A. muciniphila searched / found?
Dear RG community,
I am looking at the limits of ACTIVE flight of various animals.
I am only interested in animals that are capable of active flight. Active flight (also called powered flight) is a type of animal flight that uses muscles to generate aerodynamic force that is sufficient to generate enough lift and thrust. So no flying fish, no frogs that jump from the treetops and use membranes between their fingers to controllably parachute and fall-down, and no flying squirrels etc. Such examples do not count as active flight under the above definition of active flight.
I am interested in limits of ACTIVE flight of the following animal groups:
c) reptiles (extinct, like pterosaurus)
I am particularly interested in the data on the following:
1). Maximum Altitude (km) a given flying animal was observed
2). Longest Travel Distance (km) - I intend it to be only continuous flight, from initial take off to landing (i.e. without landing and resuming flight afterwards for the second time), otherwise a lot of organisms essentially have no limit to distance.
3). Maximum Speed Observed (but it is less critical)
If any of you know papers or studies that show such limits for example organisms of insects, birds, extinct reptiles and mammals please let me know.
Thank you very much for your help, time and consideration.
Our group (we are zoologists focusing on animal orientation) is considering buying a georadar to map the tunnels of subterranean mammals. We would like to study the position and direction of the tunnel networks of animals of various sizes (from voles to bigger animals such as ground squirrels, i.e., tunnels with various diameter in various depths) living in various types of soils and environments. When we received the visualization of our trial measurement of voles tunnels on the field, we were, however, a bit sceptical whether this is a suitable method (difficult to discern what is a tunnel and what some other anomaly such as rocks etc.).
- Any tips, tricks or experience with using georadar in animal ecology?
- How to get the most precise visualization of the networks?
- Would you recommend to use the 750 or 450 mHz antenna?
Is there another way to measure the relative brain size of a mammal specie than the encephalization quotient (EQ)? Is appropiate to use the EQ as a measure?
I am conducting a study using wildlife traits, however, home range data is limited.
Pd. I have already used data from Tamburello et al. 2015, but I still have lots of species without home range data.
COVID-19 has been found in mammals in the wild, and in domesticated mammals. What about birds?
I am searching an advice on how long a tick could be find always sticked (not moving on freely) on an animal after its dead?
I think that this is depending of the age of the tick, and the volume of blood they are still in need.
But is it possible to find some ticks still hooked after 3 days, 7 days, Less or more???
I wonder this question especially for big mammals like elephant, but data from other taxa are welcome
All papers or experiemental data are welcome.
Thank you for your suggestions
- Therefore, I would like to know if anyone has carried out tests since these waves are capable of interacting in the respiratory passages of exposed mammals.
- Also taking into account and without ruling out the digestive system, as a possibility of testing.
Or if someone can think of how to safely perform that test.
I am looking for a commonly used Mammalia nomenclature resource/database/catalog. Preferably an online resource that is continuously updated. Similar to Frost (Amphibia) or the HBW (Aves).
I found the Mammal Diversity Database (https://mammaldiversity.org), however as I'm not a mammologist I wanted to make sure that I'm not missing other resources that are commonly used.
Thanks in advance.
I am conducting some seed predation research and want a rough estimation of the local abundance of mammals. I have been suggested that scat counting is a relatively easy way to obtain such an approximation.
I have already identified the paper by Birks et al. (ARE SCAT SURVEYS A RELIABLE METHOD FOR ASSESSING DISTRIBUTION AND POPULATION STATUS OF PINE MARTINS) but I was wondering if anyone knew of any studies that used this method?
What about the use of plots to determine the density of scats?
I'm compiling trait information of vertebrates and I was wonder if anyone knows about good papers or other types of documents where I can find information related to the dispersal distances, capabilities or proxies to these two measures. I know that for mammals and birds there is information available but reptiles, like usual, seems to be a little bit neglected in this aspect. Any helo will be more than welcome :)
Hi All, we have a bioinformatics challenge and we would love any help this community can offer. We have data from a target-enrichment experiment that was supposed to capture certain microsatellite motifs. The three enriched libraries were sequenced in a rapid run on Illumina Hiseq 2500 (paired end mode) and our data is in the standard illumina fastq output. Our three libraries come from three different sources. The first library is developed from fresh fish tissue; the second one is mammal tissue; and the third one is the same mammal species but from fecal samples. For the fecal samples, we need to somehow filter out sequences belonging to the mammal only (i.e. not prey or microbiome). We have a reference genome for the mammal, but not for the fish. The data has been demultiplexed already (so for the fish we have 40 individual fish each with its own .fq file containing all the read data). Now, we are facing the challenge of how to deal with this data. Although we are familiar with most basic bioinformatic tools and analyses we do not have advanced programming skills. We need to find a way not only to find and identify the length of our microsats within the reads but also (for the fecal library) somehow be able to identify unique flanking sequences that would correspond to our mammal, in such a way that the reads of other species in the fecal libraries can be excluded. Would anyone have a suggestion on what approach(es) we could use? We have already (unsuccesfully) attempted to tackle this with SSR_pipeline. Thank you in advance for any help you can offer - it is very much appreciated! Daniel & Vania
In his 2007 book Chasing Kangaroos, Tim Flannery rather extensively discusses the idea (treated in the text as something supported by scientific research, rather than an untested hypothesis) that the primary symbionts involved in foregut fermentation in kangaroos are strongyle nematodes, rather than single-celled microorganisms. I have been trying to look up the origin of these observations in the scientific literature, but have not been able to find any papers regarding this. Not even any papers “this was a hypothesis that was once suggested but has since been disproven”. All of the papers I have seen regard strongyle nematodes as parasites. The book itself does not cite any specific literature for this observation, and the bibliography does not mention anything about further references on kangaroo fermentation.
I was wondering if anyone knew the origins of this observation, and if it has been supported by the latest research.
I am thinking about using JSDM for small mammals communities in Europe following HMSC package. When performing these kind of analyses for birds, I obtained the phylogenetic correlation matrix from http://birdtree.org/. However, in http://vertlife.org/ it seems that mammal phylogenetic subsets are not available for now. Is there any other source where I can find this kind of information?
A study was conducted on a kind of endemic marine mammal in a land locked sea. The coastal line is about 1000 km from West to East. 20 microsatellite markers had used and the results of DPAC analysis using adegenet (R package) Fig 1 and STRUCTURE software (1000000 MCMC, 10% burnin) Fig 2 were shown two different populations of this species. The results reinforce the hypothesis that there is more than one population in this closed sea. Now, I've three questions here:
a) Is there any possibility to have two populations for mentioned species in a land locked sea with 400000 km2 area?
b) With these results, can we conclude that there was a gene influence form the east population to the west population?
c) How about interpretation for DAPC graph with two curves?
P.S: In both barplots, red cluster represents west population individuals, while green cluster indicates East population individuals.
I have been looking for a comprehensive review that compares African grasses, both cultivated and wild in terms of productivity and feed quality for livestock. There are some studies looking at grasses in national parks and the intake by wild mammals. I wonder whether somebody evaluated the literature for farm animals (large and small ruminants). I would appreciate suggestions and links to resources. Ideally, we build a database with this.
I am conducting research in which I would like to see if I can detect a threshold response in mammal species richness in relation to the surrounding level of forest across study sites. I plan to use multi-species occupancy modelling methods using a bayesian approach in R to determine species richness in relation to the forest cover covariate, but I am a bit stuck on how I would then proceed to determine break points/thresholds in the species richness across sites in relation to forest cover. I have done a bit of a research into methods/tools for determining breakpoints (such as Muggeo's segmented package in R) however I am wondering if anyone has suggestions for how I could both use these multi-species occupancy modelling methods to determine species richness in relation to the forest cover covariate, and also determine if there is a threshold relationship between species richness and forest cover in any sites using tools in R? Thanks very much!
Hi all, I've got a question with FDis values from 9 mammal assemblages which range from 4.001 to 5.031 (mean ± SD = 4.690 ± 0.290). I'm using a set of 28 traits, mostly binary traits. As far as I know, these values appear to be very high. For the same assemblages, functional evenness ranged from 0.481 to 0.667 (mean ± SD = 0.557 ± 0.048) and Rao’s square entropy from 17.62 to 26.04 (mean ± SD = 23.150 ± 2.582).
Thank you in advance for any suggestions!
I am trying to do research into new ways scientists are researching and understanding emotions in animals, (mammals, fish, birds, insects). Would anyone know of any interesting papers on the subject?
Hi, I am planning to set up a long term monitoring study using camera traps in Peru. In terms of choosing station location, number of cameras, distance within stations and orientation of the camera, could you offer any advice? Is there any paper you have used in