Science topic

Crustacea - Science topic

Crustaceans form a very large group of arthropods, usually treated as a subphylum, which includes such familiar animals as crabs, lobsters, crayfish, shrimp, krill and barnacles. The scientific study of crustaceans is known as carcinology (alternatively, malacostracology, crustaceology or crustalogy).
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Publications related to Crustacea (10,000)
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Intertidal marine crustaceans use multimodal cues to find resources, relying most heavily on chemical cues. However, water movement on intertidal shores acts as a sensory stressor, diluting and modifying the direction of waterborne chemicals, which may increase the relative importance of visual cues. We compared the influence of visual cues, chemic...
Article
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The multi-pond system plays an essential role in maintaining the biodiversity of the agricultural landscape. In recent years, the vast majority of farm ponds have undergone the process of territorialization, which strongly affects the aggregation degree of ponds. The aggregation degree of ponds is the spatial structure of the ponds; and thus may po...
Article
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Chelarctus Holthuis, 2002 is widely distributed throughout the Indo-West Pacific, but its biogeographic patterns are unknown because Southern Hemisphere areas, such as the Coral Sea, remained poorly explored. Recent cruises organized by the Muséum national d'Histoire naturelle of Paris and the Australian Institute of Marine Science allowed the mole...
Article
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The red swamp crayfish, Procambarus clarkii, and the marbled crayfish, Procambarus virginalis, are invasive species expanding their ranges on a global scale. Their spread is favored by the fact that these crayfish are also aquaculture species of great economic importance (P. clarkii) or promising prospects in this regard (P. virginalis). This study...
Article
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The Gulf of Guinea is characterised by a complex hydrology and supports a high species diversity. A recent study has indicated that the area can be considered a refuge for rare taxa. Intensive sampling off the coast of Ghana (Gulf of Guinea) in 2012 on board the R/V F. Nansen resulted in the discovery of a large number of benthic invertebrates, inc...
Article
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From latest Hauterivian to latest Barremian, the Urgonian facies of the Swiss and French Jura Mountains are subdivided into three formations and five members: new Saars Formation (= former “Gorges de l’Orbe Formation” sensu Strasser et al., 2016; Pictet, 2021) with a new Falaises Member below the Montcherand and Bôle members of Pictet (2021), Roche...
Article
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Background The European environmental risk assessment of plant protection products considers aquatic model ecosystem studies (microcosms/mesocosms, M/M) as suitable higher tier approach to assess treatment-related effects and to derive regulatory acceptable concentrations (RAC). However, it is under debate to what extent these artificial test syste...
Article
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The insulin-like androgenic gland-specific peptide is a known primary regulator of sexual differentiation in crustaceans. However, the knowledge of the crucial elements involved in the insulin-like signaling cascade remains fragmented. Here, we characterized a novel insulin-like receptor gene in the white shrimp Penaeus vannamei and named as Pv-IR....
Article
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While there is little doubt that the species is the lowest independent evolutionary unit, understanding the many different species concepts is a difficult task, even for university students. In the present study, we propose a didactic sequence that involves fieldwork, laboratory analyses, experimental cultures, and computational work in an integrat...
Article
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The production and consumption of surfactants are constantly increasing, and huge amounts are found in the environment as contaminants. Surfactants are widely used in domestic and industrial applications, including in tunnel-mechanized excavation of large-scale infrastructures (e.g. highways and railways). In the latter case, the commercial product...
Article
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Climate change has direct effects on aquatic systems where increased water temperature leads to range shifts and changes in the distribution of aquatic organisms. The effects of climate change on aquatic ecosystems are expected in all biomes, and in Alpine environments in particular. Anthropogenic pressure (e.g., chemical pollution) besides climate...
Article
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Chitin nanofibrils (CN) can be obtained from crustaceans and fungal sources and can be used for preparing coatings for bioplastic films, that are fundamental for developing a safe and sustainable biodegradable food packaging. Coatings with different concentrations of CN from shrimps were applied on different bioplastic substrates, like Poly (butyle...
Article
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The ovigerous female of Palaemon sewelli (Kemp, 1925) was collected from Korangi Creek (Karachi, Pakistan) and kept in the laboratory. The larvae hatched after 7 days and survived until Zoea IV within 5 days at room temperature 29 °C-31 °C in filtered seawater with a salinity of 35-37 parts per thousand and a pH of 7.5-7.9. In order to feed the lar...
Article
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A new branchiopod genus and species is described as Thuringiops nephroides gen. nov., sp. nov. from Gzhelian (late Carboniferous) and Sakmarian (early Permian) strata of the Thuringian Forest Basin, which is the oldest record of a new kazacharthran (in a broad sense) or a Palaeozoic stem-form of the Mesozoic Kazacharthra. In addition, Lynceites orn...
Article
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In the Philippines, as in other East African and Asian countries, the shrimps of the genus Acetes, family Sergestidae, a minor planktonic crustacean group, are highly valued for their economic importance. Sergestid shrimp, locally known as “hipon,” has long been a source of food and livelihood for the fishing communities in the municipalities of Ba...
Article
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A lack of knowledge about the long-term cultivation requirements of groundwater fauna is hampering the establishment of biological criteria to identify chemical threats to groundwater. As a contribution to solving this problem, we have carried out comprehensive laboratory studies on the diet and survival rates of the groundwater amphipod Niphargus...
Article
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The stomach contents of 30 male and 43 female (age < 3 years; 74–236 cm total length) juvenile great hammerhead sharks (Sphyrna mokarran (Rüppell, 1837)) obtained from commercial fisheries operating in Saudi Arabian waters of the Arabian Gulf were analyzed for the first time. After exclusion of parasites and abiotics, a total of 31 prey items, incl...
Article
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Chitosan is a versatile biopolymer due to its biocompatibility, biodegradability, antimicrobial, non-toxic, mucoadhesive, and highly adsorptive properties. Chitosan and its derivatives have been used for many biomedical applications. Currently, crustacean shells and other marine organisms are the significant sources of chitin/chitosan production wo...
Article
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Heme oxygenase-1 (HO-1) is a stress-inducible enzyme with antioxidant, anti-inflammatory, and anti-apoptotic effects. In this study, the HO-1 gene from Litopenaeus vannamei (Lv-HO-1) was identified. The open reading frame of Lv-HO-1 is 747 bp, encoding a peptide of 248 amino acids as well as a conserved HemO structural domain. Lv-HO-1 is 70–90% hom...
Article
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Bycatch of nontarget species can contribute to overfishing and slow efforts to rebuild fish stocks. Controlling bycatch is fundamental to sustainable fishing and maintaining healthy populations of target species. The Antarctic krill (Euphausia superba) fishery is the largest volume fishery in the Southern Ocean. Understanding the significance of by...
Article
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Microplastic pollution can interfere with aquatic animal health and nonspecific immunity, increasing the potential for pathogen infection in crustaceans. However, the long-term effects of microplastics on crustacean immunity are less understood, especially regarding their toxicity in Pacific white shrimp (Litopenaeus vannamei). Effects of high-dens...
Article
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An Acad Bras Cienc (2022) 94(4) ECOSYSTEMS Toxic tests show the sensitivity of the Daphnia similis (Crustacea, Cladocera) and Pseudokirchneriella subcapitata (Chlorophyceae) to commercial pesticides Abstract: Pesticides have reached aquatic ecosystems and have caused numerous impacts on organisms. The present study aimed to assess the sensitivity o...
Article
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The Gulf of Gabès, located on the south-east Tunisian coast, is an important maritime area, with great influence on the local economy and human welfare. The aim of the current study was to assess the response of meiobenthic copepod populations from this gulf to anthropogenic disturbances. Nine sampling sites, situated along the shores of the gulf w...
Poster
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Although the ecological importance and impact of non-indigenous species is increasingly recognised and documented in shallow water ecosystems, their presence beyond the shelf has scarcely been documented. A survey of the upper slope biota of the Mediterranean coast of Israel revealed the presence at 200-m depth of individuals of three Erythraean sp...
Article
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Re-examination of historical collections allowed us to resolve the taxonomic status of Typhlotanais sandersi Kudinova-Pasternak, 1985, originally described based on a single specimen from Great-Meteor Seamount. The holotype of this species was considered lost and the species redescribed based on a second specimen from the type locality by Błażewicz...
Article
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The market demand for marine-based cosmetics has shown a tremendous growth rate in the last decade. Marine resources represent a promising source of novel bioactive compounds for new cosmetic ingredient development. However, concern about sustainability also becomes an issue that should be considered in developing cosmetic ingredients. The fisherie...
Article
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Central European riverine networks are subject to widely varying local anthropogenic pressures, forcing species with limited dispersal abilities to adapt or become locally extinct. Previous catchment-wide studies have shown that some invertebrates tend to have pronounced population structuring throughout mountainous river networks, raising the ques...
Article
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BackgroudMacrobrachium rosenbergii is an economically important species that is widely cultivated in some Asian nations. Foxl2 is a transcriptional regulator of ovarian differentiation and development. The aim of this study was to study the bioinformatics features and expression patterns of M. rosenbergii Foxl2 (MrFoxl2).Methods In this study, all...
Article
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Aim: Water column acoustic backscatter is regularly registered during oceanographic surveys, providing valuable information on the composition and distribution of pelagic life in the ocean. We propose an objective approach based on functional data analysis to classify these acoustic seascapes into biogeographical regions. Location: Tropical South...
Article
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Background. Several works conducted in Mexico have addressed the Neotropical otter (Lontra longicau-dis annectens), a protected subspecies (NOM-059-SEMARNAT-2010). Objectives. To know the abundance and distribution of the neotropical otter in the State of Campeche in La Lagartera Lagoon (Palizada River). Methods. During 2017 were searched the lagoo...
Article
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Con el objeto de caracterizar la biodiversidad de macroinvertebrados en ambientes acuáticos intermareales, en dos playas del municipio Santa Rita, estado Zulia, Venezuela, se tomaron muestras por triplicado en 4 estaciones, midiendo salinidad, temperatura, sólidos suspendidos, nivel de la marea y transparencia. Los organismos fijados con formol...
Preprint
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Although there is an increasing interest in the effects of anthropogenic noise on animals, aquatic studies mainly focus on organisms with hearing systems (marine mammals, fish, great arthropods) while many others of substantial ecological importance are not considered. Here we show that the water flea Daphnia magna, a widespread zooplankton species...
Poster
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AIMS exploring the diet composition along a river-to-lake gradient evaluating any spatial pattern in prey composition evaluating any seasonal variation in prey composition We are grateful for ALMNP for funding this study. AKNOWLEDGMENTS. REFERENCES a Carss, D. N., Elston, D. A., & Morley, H. S. (1998). The effects of otter (Lutra lutra) activity on...
Article
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The properties of biochar (BC) from crustacean chitin are relatively well understood, while there are few studies on BC from insect chitin. This study presents the characterization and phytotoxic assessment of BC produced from crickets and cricket chitin. Cricket powder (BCCR) and cricket chitin (BCCH) were pyrolyzed at 500 °C and 700 °C. Physicoch...
Article
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Introduction: Echinoids (sea urchins) provide shelter for a variety of facultative or obligatory ectosymbionts. Objective: To evaluate the hypothesis that decapods and fishes prefer to associate with echinoid individuals and species that have longer spines. Methods: We visually studied the frequency of decapod crustaceans and fishes associated with...
Article
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With about 80 species, Sphaeronella is the most species-rich genus in the copepod family Nicothoidae. To date, 20 named Sphaeronella species have been reported as ectoparasites on ostracod crustaceans. Here we describe Sphaeronella uyenoisp. nov. parasitic on the philomedid ostracod Euphilomedes sp. collected from Akkeshi Bay, Hokkaido, Japan, nort...
Article
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A new genus and new species of potamid crab, Gurumon gurumayum gen. et sp. nov., are described from the Arunachal Pradesh State of northeastern India. Gurumon gen. nov. has affinities with Abormon Mitra, Pati & Ng, 2021, Pararanguna Dai & Chen, 1985, and some species of Potamiscus Alcock, 1909, but the new genus can easily be differentiated from th...
Article
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Hypania invalida (Grube, 1860) в Горьковском и Чебоксарском водохранилищах. Материалом для исследования послужили 363 количественные пробы зообентоса, отобранные в летние периоды 2015-2021 гг. с целью изучения кормовой базы рыб. Выяснено, что в верховьях водохранилищ развитие полихеты сильно ограничено большой долей песчаных грунтов и высокой скоро...
Article
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Fish is one of the major food allergens which, in sensitised individuals, can cause life-threatening allergic reactions, even when present in small amounts. To protect consumers’ health, the correct labeling of foods is important. The objective of the present study was to validate an in-house real-time PCR method targeting the ribosomal 18S rRNA ge...
Article
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Decapod crustaceans are a diverse group englobing several species of commercial and ecological interest. In the Mediterranean Sea, decapod crustacean fisheries are among the most profitable, although in many cases their early life stages are poorly known. In this study, we tackle the composition and diversity patterns of the decapod larval communit...
Preprint
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The clade Pancrustacea, comprising crustaceans and hexapods, is the most diverse group of animals on earth, containing over 80% of animal species. It has been the subject of several recent phylogenomic analyses, but despite analyzing hundreds of genes, relationships within Pancrustacea show a notable lack of stability. Here, the phylogeny is estima...
Preprint
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To evaluate the crustacean gill (Na ⁺ , K ⁺ )-ATPase as a molecular marker for toxic contamination by heavy metals of estuarine and coastal environments, we provide a comprehensive analysis of the effects of Co ²⁺ in vitro on modulation of the K ⁺ -phosphatase activity of a gill (Na ⁺ , K ⁺ )-ATPase from the blue crab Callinectes danae . Using p -n...
Article
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Nine species of fiddler crabs (Crustacea: Ocypodidae: Gelasiminae) are known from the Arabian Sea and adjacent waters (Red Sea, Gulf of Aden, Gulf of Oman and Arabian/Persian Gulf): five species of Austruca, one Cranuca, two Gelasimus and one Tubuca. COI sequence data match morphological species boundaries and shows high connectivity within each. T...
Article
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Based on recently collected material and records in the literature, 14 species of fiddler crabs (Crustacea: Ocypodidae: Gelasiminae) are reported from Vietnam. DNA barcoding analyses using the mitochondrial gene COI (cytochrome c oxidase subunit I) was performed to identify examined materials and their precise distributional range. Thirteen species...
Article
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Both oxidative stress and autophagy refer to regulating fat metabolism, and the former affects autophagy, but the role and mechanism of the antioxidant–autophagy axis in regulating lipid metabolism remains unclear. As an antioxidant, tea tree oil (TTO) has little research on the regulatory mechanism of lipid metabolism in crustaceans. This study in...
Article
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Fiddler crabs (Brachyura: Ocypodidae: Gelasiminae) in Taiwan consist of 5 genera and 15 species, but knowledge of their larval development is limited to just 3 species, namely Austruca lactea, Tubuca arcuata, and Xeruca formosensis. In our study, the morphology of the first zoeal stage (zoea I) of the 15 species is described and compared to previou...
Article
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The effect of salinity on the survival, growth, development and neonate production of the cladoceran Scapholeberis mucronata (O. F. Müller) was studied by using Chlorella pyrenoidosa as feed at 1, 2, 3, 4 salinity gradients and control group according to the pre-experiment and median lethal concentration experiment. The acute effect of salinity on...
Article
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Xeruca formosensis is a species and genus of fiddler crab endemic to Taiwan, with limited distribution in western Taiwan and the offshore Penghu Islands. This study reports the complete mitochondrial genome (mitogenome) of this species using next-generation sequencing. The mitogenome contains 15,684 bp, comprising 13 protein-coding genes, 22 tRNAs,...
Article
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The fiddler crab Tubuca arcuata (Crustacea: Ocypodidae: Gelasiminae) is widely distributed across East Asia and northern Vietnam. Particularly, this species inhabits estuarine mangroves and mudflats of the East Asian continent, as well as the main islands of Japan and the Ryukyus. By comparing sequences of the mitochondrial 16S, cytochrome oxidase...
Poster
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Meiofauna is a good pollution indicator that responds to environmental change according to its ecosystem function. However, the long-term monitoring of meiofauna in the tropics continues to be a neglected research area. Here we assessed meiofauna assemblages highlighted by their biological traits and response to contaminants in the southern Gulf of...
Chapter
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In the antennal lobes of insects and olfactory bulbs of vertebrates, the primary processing of olfactory information occurs within specialized units, called glomeruli. Glomeruli are discrete areas of densely packed, fine neuropil, usually ensheathed in glia cells. Glomeruli are the sites of synaptic interaction between axons of olfactory receptor c...
Article
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Laboratory studies were carried out on an ovigerous female of Atergatis integerrimus (Lamarck, 1801) and A. floridus (Linnaeus, 1767) collected from Buleji (Karachi, Pakistan). After 9 days larvae were hatched out as first zoeal stage at room temperature 29 o C-30 o C and water temperature 28 o C-29 o C in filtered seawater with a salinity of 35-37...
Article
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Farmers have increased the production of food by using chemical substances such as diuron; however, these components affect the water quality and the species found in these ecosystems. Macrobrachium acanthurus and M. olfersii postlarvae present in the estuary of Río Jamapa, Veracruz were collected to measure the LC50 and LD50 using the herbicide Ka...
Article
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The change in life activities throughout a cycle of approximately 24 h is called the circadian rhythm. Circadian rhythm has an important impact on biological metabolism, digestion, immunity, and other physiological activities, but the circadian rhythm of crustaceans has rarely been studied. In this study, the activity of digestive enzymes (α-amylas...
Conference Paper
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Carey (1999) distinguishes utopias and dystopias as expressions of desire and fear respectively (p. xi). In Escape (2008) and its sequel The Island of Lost Girls (2015) Manjula Padmanabhan attempts to envision a post-nuclear Indian subcontinent where femicide has been carried out by the ruling cyborg generals since cloning has made women redundant....
Preprint
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The current work presents hermit crab species inhabiting the intertidal and shallow subtidal region on the coast of south Andaman Islands, along with an updated checklist of hermit crabs from Andaman and Nicobar Islands (ANI) and an identification key for surveyed hermit crabs. Five species of hermit crabs representing two families (Coenobitidae an...
Book
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Biological basics and currently used methods and technologies of fih and other water organisms culture in diffrent systems mainly under conditions of fresh waters are examined including semi-intensive pond polyculture of cyprinids, culture based fiheries, intensive monoculture in flw-through tanks, recirculating aquaculture systems and cages and ot...
Article
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The Niger River and its main tributaries (Sirba, Tapoa and Mékrou) in Niger were sampled during high and low water flow with the objectives of (1) comparing the taxonomic structure, diversity and abundance of the zooplankton community (rotifers, copepods, crustaceans) along the river and (2) determining which environmental or biological factors inf...
Preprint
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The American lobster, Homarus americanus , is an economically valuable and ecologically important crustacean along the North Atlantic coast of North America. Populations in southern locations have declined in recent decades due to increasing ocean temperatures and disease, and these circumstances are progressing northward. We monitored 57 adult fem...
Article
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Mesoscale eddies shape the foraging ecology of predators such as marine mammals and seabirds. A growing number of animal tracking studies show that predators alter their swimming, diving, and foraging behavior within mesoscale eddies. However, little is known about how Southern Ocean eddies influence the distribution of mesopelagic micronekton (fis...
Article
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Abiotic factors play important roles on the habitat preferences and dispersal decisions of species. The objective of this study was to estimate the groups of abiotic variables best explaining the variation of ostracods species taken from 31 water bodies (27 streams and 4 lakes) sampled twice (October 2020 and April 2021) in the Eastern Mediterranea...