Results 11 to 20 of about 5,760 (228)
The oldest freshwater crabs: claws on dinosaur bones. [PDF]
Sci Rep, 2019 Abstract With approximately 1,500 extant species, freshwater crabs (Decapoda: Brachyura) are among the most diverse decapod crustaceans. Nevertheless, their fossil record is extremely limited: only Potamidae, Potamonautidae and Trichodactylidae are reported up to the Eocene of the Neotropics so far.
Robin N +7 more
europepmc +6 more sources
Neotropical freshwater crabs (Decapoda: Pseudothelphusidae) shred leaves
Nauplius, 2020 Freshwater crabs are macroconsumers that are commonly found in Neotropical headwater streams that may play a key role in energy flow and nutrient cycling in detrital food webs.
Carol Yang +3 more
doaj +3 more sources
Freshwater Crabs of Upper Baleh River, Sarawak
Borneo Journal of Resource Science and Technology, 2018 Freshwater crabs are among the most threatened species, primarily due to their high levels of endemicity, poor dispersal ability, low fecundity and the relatively fragmented nature of freshwater ecosystems. Consequently, regional diversity of freshwater crabs can serve as surrogates for assessing the quality of aquatic habitats in the upper reaches of ...
Jongkar, Grinang +4 more
core +5 more sources
, 2004 Freshwater crabs are a strangely neglected component of the world's inland aquatic ecosystems. Despite their wide distribution throughout the tropical and warm temperate zones of the world, and their great diversity, their role in the ecology of freshwaters is very poorly understood. This is nowhere more true than in Africa, where crabs occur in almost
Dobson, Michael
openaire +3 more sources
Absorption of Silver on the Gills of a Freshwater Crab [PDF]
Nature, 1952 UNDER this title, Dr. D. W. Ewer and Ivan Hattingh1 quote in the following context a passage from a paper of mine2: “The localization of the silver-absorbing areas to certain gills which we have found in Potamon provides an exception to Koch's statement that ‘tous les organes decrits comme branchies chez les Crustaces…absorbent l'Ag'’.” However, the ...
D. W. EWER, IVAN HATTINGH
+5 more sources
Top-Down Effect of Arthropod Predator Chinese Mitten Crab on Freshwater Nutrient Cycling
Animals, 2023 Aquatic litter decomposition is highly dependent on contributions and interactions at different trophic levels. The invasion of alien aquatic organisms like the channeled apple snail (Pomacea canaliculata) might lead to changes in the decomposition ...
Lin Wang +7 more
doaj +1 more source
Sexual Disruption in the Freshwater Crab (Geothelphusa dehaani) [PDF]
Integrative and Comparative Biology, 2005 To clarify the effect of environmental endocrine disruptors on the induction of secondary sexual characteristics in wild animals, we observed 1,527 male and 1,847 female specimens of sexually mature Japanese freshwater crabs, Geothelphusa dehaani, collected at 12 sample points from 10 rivers in Sasebo City, Nagasaki Prefecture, Japan.
Toshikazu, Ayaki +4 more
openaire +2 more sources
The crayfish plague pathogen can infect freshwater-inhabiting crabs
, 2014 The potential for A.astaci transmission in the opposite direction, from crabs to crayfish, and potential impact of this pathogen on populations of freshwater crabs require further investigations, because of possible consequences for crayfish and ...
Sveriges lantbruksuniversitet. +1 more
core +2 more sources
Incidence of Paragonimus Metacercariae in Freshwater Crabs in Ammapettai Village: A Pilot Study [PDF]
Journal of Clinical and Diagnostic ResearchIntroduction: Paragonimus westermani is a significant lung fluke parasite that affects humans by causing a disease called paragonimiasis, transmitted through the consumption of inadequately cooked or pickled freshwater crabs (the second intermediate host)
Sunil Kumar Jada +2 more
doaj +1 more source
Perspectives in Ecology and Conservation, 2020 Research biases are common and constant issues in biological research, with major consequences for biodiversity conservation. Freshwaters represent one of the most threatened ecosystems worldwide, but knowledge of freshwater biota is unevenly distributed
Graciele de Barros +5 more
doaj +1 more source