Results 71 to 80 of about 3,001 (214)

Overview of the Fish Diversity of Indian Waters [PDF]

, 2018
Fishing is one of the oldest human activities and it developed gradually, when our ancestors moved from the collection of plants and animals to hunting by using tools and weapons. The oldest fishing implements so far identified are harpoons, found in
Dinesh Kumar, S, Nair, Rekha J
core  

Oxygen consumption from air and water, ammonia and urea‐N excretion, and Na+ fluxes during progressive aquatic hypoxia in Amazonian armoured catfish Pterygoplichthys gibbiceps and Pterygoplichthys pardalis

Journal of Fish Biology, Volume 108, Issue 3, Page 867-880, March 2026.
Abstract The Amazonian loricariid fish Pterygoplichthys gibbiceps, from the Rio Negro, and Pterygoplichthys pardalis, from the Rio Solimões, are facultative air‐breathers that can use the stomach as an air‐breathing organ. Measurement of oxygen uptake under progressive aquatic hypoxia revealed a relatively high hypoxia resistance of both species.
Bernd Pelster, Chris M. Wood, Adalberto Luis Val   +2 more
wiley   +1 more source

A new armored catfish species of the genus Hypostomus Lacépède, 1803 (Siluriformes: Loricariidae) from the upper rio Xingu basin, Brazil

Neotropical Ichthyology
A new armored catfish species of the genus Hypostomus is described from the upper rio Xingu basin, Mato Grosso State, Brazil. The new species is diagnosed from congeners by having high number of teeth (58 to 101, mean 77 on premaxilla, and 58 to 105 ...
Cláudio H. Zawadzki, José L. O. Birindelli, Flávio C. T. Lima   +2 more
doaj   +1 more source

Size-based variation in intertissue comparisons of stable carbon and nitrogen isotopic signatures of bull sharks (Carcharhinus leucas) and tiger sharks (Galeocerdo cuvier) [PDF]

, 2010
Stable isotopes are important tools for understanding the trophic roles of elasmobranchs. However, whether different tissues provide consistent stable isotope values within an individual are largely unknown.
Heithaus, Michael R., Layman, Craig A., Matich, Philip   +2 more
core   +1 more source

Nitrogen excretion and oxygen consumption under severe hypoxia in siluriform fishes from the Amazon

Journal of Fish Biology, Volume 108, Issue 3, Page 881-893, March 2026.
Abstract Siluriform fishes collected from the Rio Negro and Rio Solimões proved to be highly resistant to aquatic hypoxia. In all four species analysed in this study, aquatic oxygen consumption significantly decreased from normoxic levels at water PO2 values near 1 kPa. Air‐breathing activity was observed only in Sturisoma sp. (Rio Negro).
Bernd Pelster, Chris M. Wood, Adalberto Luis Val   +2 more
wiley   +1 more source

Armored catfish (Siluriformes: Loricariidae) from the Miocene of southern Pampas and its palaeobiogeographical implications [PDF]

Swiss Journal of Palaeontology, 2019
Armored catfishes are grouped within the clade Loricariidae. They are typically Brazilian freshwater fishes that show a high taxonomic diversity in South America and are distributed from Costa Rica to Buenos Aires province, Argentina. The aim of the present contribution is to describe an isolated pectoral spine of a loricariid coming from Late Miocene ...
Bogan, Sergio, Agnolin, Federico
openaire   +2 more sources

Interrelationship between contractility, protein synthesis and metabolism in mantle of juvenile cuttlefish (Sepia officinalis) [PDF]

, 2019
Young juvenile cuttlefish (Sepia officinalis) can grow at rates as high as 12% body weight per day. How the metabolic demands of such a massive growth rate impacts muscle performance that competes for ATP is unknown.
Bamford, Bartol, Biolo, Capaz, Carter, Dizon, Driedzic, Forsythe, Fraser, Gibala, Grieshaber, Gäde, Johansen, Kitasato, Lamarre, Lamarre, Lamarre, Langer, Layland, Lewbart, Losito, Martínez-Quintana, McCully, Melzner, Milligan, Moltschaniwskyj, Nakamura, Okamoto, O’Dor, O’Dor, Phillips, Pörtner, Ruff, Sandow, Seibel, Seibel, Sepp, Shiels, Short, Speers-Roesch, Storey, Sykes, Sykes, Sykes, Sykes, Trueman, van Os, Wong, Wong, Xu   +49 more
core   +1 more source

River Ecosystem Degradation and Its Impacts on Fish Biodiversity and Capture Fisheries in Major River Basins of Bangladesh: A Policy‐Focused Study

Aquaculture, Fish and Fisheries, Volume 6, Issue 1, February 2026.
ABSTRACT This study investigates the widespread degradation of river ecosystems in Bangladesh and its impact on fish biodiversity and identifies potential strategies for ecosystem restoration. Combining community perceptions from focus group discussions (FGDs) with fish market study for spatial analyses of fish species diversity across the Barak–Meghna,
Mohammad Mahfujul Haque, M. Zulfikar Rahman, Md. Abdus Salam, M. Asaduzzaman Sarker, M. G. Mostofa Amin, Murad Ahmed Farukh, Md. Saifullah Bin Aziz   +6 more
wiley   +1 more source

Rapid Gamete Maturation and Social Modulation Shape Reproductive Dynamics in a Brood Parasitic Catfish

Ecology and Evolution, Volume 16, Issue 2, February 2026.
Obligatory brood parasitism in the Lake Tanganyika cuckoo catfish requires rapid reproductive readiness to exploit unpredictable host spawning. Our experiments showed that males are almost continuously ready to reproduce, while females ovulate about once a week, with social interactions enhancing gamete maturation in both sexes.
Holger Zimmermann, Radim Blažek, Matej Polačik, Anna Bryjová, Lukas Koch, Martin Reichard   +5 more
wiley   +1 more source

An albino armored catfish Schizolecis guntheri (Siluriformes: Loricariidae) from an Atlantic Forest coastal basin [PDF]

Neotropical Ichthyology, 2005
We report here on an albino specimen of Schizolecis guntheri caught in the rio Bonito in the rio Macaé basin, Rio de Janeiro State, southeastern Brazil. The hypothesis that albinism is more common in fishes with cryptobiotic and/or nocturnal habits is strengthened by additional records of this chromatic anomaly.
Brito, Marcelo F. G. de, Caramaschi, Érica P.   +1 more
openaire   +4 more sources