Results 61 to 70 of about 3,711 (247)
Fish Migration Through Ship Locks at the Danube River, Austria
River Research and Applications, EarlyView.ABSTRACT Longitudinal connectivity in the Austrian section of the Danube has improved over the last three decades thanks to the progressive installation of fish passage facilities at hydropower plants. However, navigation locks which are present at all barrages remain poorly quantified with respect to their role in fish migration.
Walter Reckendorfer +5 more
wiley +1 more source
Memorias do Instituto Oswaldo Cruz, 1993 Phyllodistomum rhamdiae n. sp. is described based on specimens collected from the urinary bladder of freshwater catfishes, Rhmdia quelen, caught from the Guandu river, outskirts of Rio de Janeiro, State of Rio de Janeiro, Brazil.
Suzana B. Amato, J. F. R. Amato
doaj +1 more source
Environmental Toxicology, EarlyView.ABSTRACT Endocrine‐disrupting chemicals (EDCs), such as 17α‐ethinylestradiol (EE2), have raised concerns about their potential effects on aquatic organisms, particularly during early developmental stages. In this context, the study of behavioral disruption has gained considerable attention, as it may have consequences on individual fitness and ...
Soloperto Sofia +6 more
wiley +1 more source
Environmental Toxicology, EarlyView.ABSTRACT The Peixoto de Azevedo River, located in northern Mato Grosso, southern Brazilian Amazon, has a long history of artisanal and small‐scale gold mining (ASGM). This study evaluated total mercury (THg) concentrations in fish tissues to assess biomagnification and potential risks.
Augusto Cesar da Costa Castilho +5 more
wiley +1 more source
Histopathology and genotoxicity alterations in high Andean catfishes from the Upper Orinoco River Basin, Colombia [PDF]
Brazilian Journal of BiologyFreshwater ecosystem pollution has motivated an extensive list of studies due to deleterious impacts becoming a threat to aquatic organisms that inhabit these environments.
W. Corredor-Santamaría +5 more
doaj +1 more source
Field evaluation of artificial intelligence early warning for bird depredation at carp ponds
Wildlife Society Bulletin, EarlyView.An artificial intelligence‐based early‐warning workflow for bird depredation at a commercial carp farm in Japan. Abstract Piscivorous birds such as the great cormorant (Phalacrocorax carbo) can cause substantial losses in pond aquaculture, yet continuous on‐site vigilance is difficult under labor shortages.
Shigeru Ichiura, Tomohiro Mori
wiley +1 more source
Neotropical IchthyologyThe Llanos is an extensive area of savannas and floodplains in central and western Venezuela that encompasses a gradual elevation gradient from the río Orinoco to the foothills of the Andean piedmont. The río Portuguesa is one of the major rivers in this
David J. Hoeinghaus +2 more
doaj +1 more source
Sentinels of environmental change: shifts in fish diversity through the lens of artisanal fishers [PDF]
Neotropical IchthyologyRiver regulation has caused significant shifts in fish diversity, with severe impacts on small-scale artisanal fisheries, which depend on fishing resources for income, employment and food security.
Marco Aurélio Alves Santos +1 more
doaj +1 more source
Integrative Zoology, EarlyView.We found that teleosts employed two different strategies to ensure sufficient ZP (zona pellucida) synthesis: expansion of ZPB1(a) and ZPC1(a) in basal species or liver expression of ZPB1a and ZPC1aa in advanced species. The N‐terminus of expanded ZPB1(a) or ZPC1(a) and liver‐expressed ZPB1a contains repeated units or low‐complexity regions to form ...
Tian Gao +8 more
wiley +1 more source