Results 31 to 40 of about 100,387 (317)

Distinct migratory and non-migratory ecotypes of an endemic New Zealand eleotrid (Gobiomorphus cotidianus) – implications for incipient speciation in island freshwater fish species [PDF]

open access: yes, 2008
Background: Many postglacial lakes contain fish species with distinct ecomorphs. Similar evolutionary scenarios might be acting on evolutionarily young fish communities in lakes of remote islands.
Stoelting, K.N.   +36 more
core   +1 more source

A new type of homodiploid fish derived from the interspecific hybridization of female common carp × male blunt snout bream

open access: yesScientific Reports, 2017
It is commonly believed that hybridization might lead to the formation of new polyploidy species, but it is unclear whether hybridization can produce a new homodiploid species.
Shi Wang   +17 more
doaj   +1 more source

Effective monitoring of freshwater fish [PDF]

open access: yesFish and Fisheries, 2019
AbstractFreshwater ecosystems constitute only a small fraction of the planet's water resources, yet support much of its diversity, with freshwater fish accounting for more species than birds, mammals, amphibians or reptiles. Fresh waters are, however, particularly vulnerable to anthropogenic impacts, including habitat loss, climate and land use change,
Johannes Radinger   +11 more
openaire   +5 more sources

Evidence for paternal DNA transmission to gynogenetic grass carp

open access: yesBMC Genetics, 2019
Background Grass carp (Ctenopharyngodon idellus, GC), as the highest-output fish in China, is economically important. The production of gynogenetic grass carp (GGC) will provide important germplasm resource for producing improved GC.
Zhuangwen Mao   +11 more
doaj   +1 more source

Optimal reference genes for gene expression analysis in polyploid of Cyprinus carpio and Carassius auratus

open access: yesBMC Genetics, 2020
Background Reference genes are usually stably expressed in various cells and tissues. However, it was reported that the expression of some reference genes may be distinct in different species.
Wenbin Liu   +9 more
doaj   +1 more source

Formation of the synaptonemal complex in a gynogenetic allodiploid hybrid fish

open access: yesFrontiers in Genetics, 2023
Introduction: The correct pairing and separation of homologous chromosomes during meiosis is crucial to ensure both genetic stability and genetic diversity within species. In allodiploid organisms, synapsis often fails, leading to sterility.
Jing Wang   +10 more
doaj   +1 more source

Carcinogens and Cancers in Freshwater Fishes [PDF]

open access: yesEnvironmental Health Perspectives, 1991
Epizootics of neoplasms in freshwater fish species are considered in relation to circumstantial and experimental evidence that suggest that some epizootics of neoplasia of hepatocellular, cholangiocellular, epidermal, and oral epithelial origin may be causally related to contaminant exposure.
J J, Black, P C, Baumann
openaire   +2 more sources

Diploid hybrid fish derived from the cross between female Bleeker’s yellow tail and male topmouth culter, two cyprinid fishes belonging to different subfamilies

open access: yesBMC Genetics, 2019
Background Bleeker’s yellow tail (Xenocypris davidi Bleeker, YT) and topmouth culter (Culter alburnus Basilewsky, TC) are both famous and important economic freshwater fish in China. YT, a kind of omnivorous fish, has strong resistance.
Shengnan Li   +9 more
doaj   +1 more source

Comparative analyses of the Sox9a-Amh-Cyp19a1a regulatory Cascade in Autotetraploid fish and its diploid parent

open access: yesBMC Genetics, 2020
Background Autotetraploid Carassius auratus (4nRCC, 4n = 200, RRRR) was derived from the whole genome duplication of diploid red crucian carp (Carassius auratus red var.) (2nRCC, 2n = 100, RR).
Xu Huang   +12 more
doaj   +1 more source

Colossal Aggregations of Giant Alien Freshwater Fish as a Potential Biogeochemical Hotspot [PDF]

open access: yes, 2011
The ubiquity and fascinating nature of animal aggregations are widely recognised. We report here consistent and previously undocumented occurences of aggregations of a giant alien freshwater fish, the Wels catfish (Silurus glanis).
Stéphanie Boulêtreau   +15 more
core   +1 more source

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