Questions related to Algal Diversity
When we compare algal diversity based on group which graph could be used better to represent the diversity among different Class...
Can any one suggested an author processing fees free research journal for publishing the algae related work...The journal should not be a predatory one.
Example: comparative study on algal diversity in three different study sites.
Hello, can somebody help me to identify this specie of Chlorphyte? I find it in a reef in front Veracruz and I think it´s a Caulerpa, but I am not sure.
Thank you for your help.
I am working with some strains of cyanobacteria isolated from Zimbabwe's Manyame catchment - I want to extract their genomic material so that I may use it to confirm their identity. In my lab I do not have the capacity to buy DNA extraction kits so I have to use other means. I tried to use the CTAB method but failing to get good results. May I have some options which I can try with my samples.
Can anyone help me to identify two species of Codium found in Sayulita, Nayarit (Mexico)? I made a cross section to watch the utricules in an attempt to identify them using a bibliography but I still found it difficult.
The dark green one is A)
The light green one is B)
For example, it is reported that Dunaliella tertiolecta has 36–42% of lipid production in dry weight (dw), while strains like Nannochloropsis can be 46(31–68)%dw, Schiochytrium can be up to 50–77%dw?
I am trying to isolate this blue green algae which came as weed into my another culture. this has a basal heterocyst and trichome tapering towards end. I feel this could be Microchaete violacea Fremy (Desikachary 1959) member of Rivulariaceae. i could not see sheath clearly and i didnt find any intercalary heterocyst. please do comment.
thanks in advance
I have been working on samples of Ostracoda from Great Britain caves. I have this specimen identified according to Meisch (2000) key as F. latens. But the size is only 0.5 mm, all other characteristics fits with species description.
Could I be wrong?Thanks
Hi all! I am working with green macroalgae. To see the variation between two population in the molecular level, I had performed basic RAPD work which showe variation in the bands. Based on this I proceeded with the sequencing of the rbcL region. Not much could be interpreted with the results from rbcL. Can somebody tell me how to proceed further to understand the variation between the subspecies
I am looking for the gene sequence of above mentioned genes. Plz send the gene sequences Or else plz suggest me the way to search the gene sequences.
When I went Andaman and Nicobar Islands i visited some of the locations as a tourist still i didnt had permission for collection i took photo of some of the seaweeds. just posting it here so that i can get knowledge on these seaweeds.kindly identify these and provide some informations regarding these algae.
kindly confirm my identification also.
1. Caulerpa recemosa
2. Boergesenia forbesii
My friend sent the short film to me saved as attachment for mp4 format (the file was 1.47 MB). Could someone help me to identify the algae in the short film ( the target algae was the stripped and moving one with a little transparent, not the green tiny circular one)? The sample was taken at the bottom of shrimp culture pond. Thank you!
Does anyone know these soil algae? They are isolated from biological soil crust in Bremen, Germany.
In the figure, there are 4 species (Non-Gel A1, 2; Gel A1, 2). The left one in each row shows their morphology on agar plate. In the microscopic image, I notice that they have different cell size. Algae (Gel-A1, and A2) both produce 4 daughter cells, and they have gelatinous colony on agar plate, while Non-Gel algae have flat colony. Scale bar stands for 10 um in the figure.
Can phycologists provide me any information from these algae? Like the genus they belong to?
This is a part of the research within my Master program. Thanks in advance~
I found this organisms on Roadside stagnant waters. which was forming a floating bloom. they are motile, colonial green algae with eyespot. there i could find two sized colonies weather both sized colonies are same genus or different.or the stage of life cycle. i also want to know about their reproduction method (gametes).
How to differentiate Pandorina and Eudorina?
In each genus what are key characters are there?
does these organisms are used in pollution indicator index?
i guess these are indicator of organic pollution, is it right?
please help me in identifying the species of these..
I found this green algae in a freshwater pond. which is highly motile moving very fast by rotating its whole body.its looks like it has flagella.sometime feel it might a green alga because i feel the chloroplast has some definite shape. to my small knowledge on algae i could not identify it. since i got only less material i could not take more photographs..only this photos and video,.. i have nothing more.
kindly help me in this regard..
I have attached one video which shows the motile stage of alga.
thanking you in advance.
Hi, I discovered an algae which seems to be a new species (for sure has not been sequenced yet). I already sequenced the total 18S, the rbcL and part of the 25S. None of these gave a unique BLAST result.
With 18S and rbcL I made phylogenetic trees using different algorithms (NJ, MP, ML) and they located my strain between the Diplosphaera and the Stichococcus genera. Also the morphological data (cell form, binary division...) support such trees.
Do I need also physiological and ultrastructural data to make a publication? Or more sequences (ITS)?
Up to know I didn't find any recent studies dealing with characterisation of new strains.
If you have any published information about its geographical distribution references thereof will also be highly appreciated.
Dear Researchers... I have a doubt in identification of two taxa in Micrasterias. M.crux-melitensis and M.radians. These two sp. were similar in their morphology and varies only in dimensions. Can anyone know the key character which differs these two sp.? Thank you all in advance.
In order to do an experimental approach, we would like to use a substrate that is as equivalent to a natural substrate usually colonized by diatoms (calcareous and silicate-calcareous mix) as possible. In specialized bibliography we have found that artificial sandstone and glass-slides on bricks were used to this end, but wondered if there was any other method I am not aware of. We would also be thankful for any further publications on this subject you could recommend.
Thank you very much in advance.
I am specifically asking about Thalassiosira. I've been looking everywhere for a reference, but I'm at a loss. Is this just an assumption that has never been tested? Is this a safe assumption? Am I just missing the reference that exists before there were online sources?
It is look like a leaf under microscope, but it could be a plankton. Earlier I heard that it was a ciliate, but I didn't get this picture again in my samples. This too found in Bay of Bengal waters. Please help me to identify this specimen.
Today different wavelengths has been chosen to measure diatom optical density. Right now more and more articles select 625nm wavelength to estimate Phaeodactylum tricornutum dry weight. Does anyone know the reason to choose 625nm instead of 750nm or 600, 680nm? Or if you have any good recommendations?
Water samples were taken from an estuary (Salinity: 15 ppt) and brown colony formed in the agar plates after 4 weeks of plating. Photographs taken at 40 X magnification. Size of the cells: 8-15 micron
I want to identify few sea algae and sea grasses for my research. I've checked online but various sources are sowing various description for the same species. Can you suggest me some credible sources?
It was found in a siliceous monomictic reservoir. Size of the algae: 3,38µm and it has some warts or protuberances...
some idea about de genus?????
secchi disk: 4.75m
Thaks in advance for your help
The photograph (At 40 X magnification) is of an isolated colony of a microalgae from a brackishwater lagoon (Salinity: 15-20 ppt). The size of one cell is around 8-10 micron.
I have collected this seaweed in the intertidial rocky shore of Ancash (north central coast of Peru). Does anybody have a suggestion about its genus or species? (I know I have to do microscopic observations but any idea would be nice!)
I did streaking again and again but could not get the pure strains. Its still clonal culture not the pure strains. I also know the dilution method. Can it be possible to pick the strain under compound microscope or dissecting one ?.
Any one can please suggest me some best ways to isolate the pure strains from colonies of bulk microalgae?..
Dear Researcher Friends,
We have some Anabaena strains in our collection but I have not managed to induce their akinete formation so far. Do you think, now I have akinetes under our microscope?
can you help me with classified the following genes:
cymbella: Long= 5, Width=1.25
long= 4.25, width=1
Amphora: Long= 5.25, Width=2.25
Achnanthus: Long= 5, Width=1.75
Nitzschia: Long= 5, Width=0.5
I have isolated and purified a Green algae which was confirmed by its chloroplast 16S rRNA gene sequencing analysis. It is showing 85% sequence similarity with one of the existing algal type culture which is a nearest neighbour (NCBI). What genetic markers are actually used for taxonomic delineation of algal (eukaryotic) members. Which databases are to be used for their actual identification. Which journals accept the taxonomic paper of algae. My isolate is found to be genetically, physiologically, chemotaxonomically different from the most of the existing algal members. Please advise me regarding this.
We are going to develop a software for drinking water plant technicians to identify phytoplankton.
It is known that more then 72 species were found in te Gulf of Gdansk (Danziger Bucht) in 1907 (Lakowitz, 1907). But I Think That not all this species are lived along the coast of East Preussen.
Zooplankton organisms should be important indicators of the general functional conditions of aquatic ecosystems.
I’ m interested to collect recent data (published or not) about inorganic (metals) and organic (PCB) contaminants in marine zooplankton
Thank you in advance
This plant is very similar to Nitophyllum punctatum, but has microscopic veins, which N. punctatum normally doesn't have. In addition, the tetrasporangia of N. punctatum up to 175 µm in diameter, whereas this specimen never exceeds 65 µm. Can you help me to identify this species? Please find images attached.