Results 91 to 100 of about 6,820 (214)

Implications of using small meshed gillnets for the sustainability of fish populations: a theoretical exploration based on three case studies

, 2015
The study explores the impacts of varying gillnet mesh size and fishing level on yield per recruit (Y/R), escapement spawning stock (ESS) and mega-spawners (MS) of three widely distributed freshwater fishery target species.
M. Wolff, Marc H. Taylor, G. Tesfaye
semanticscholar   +1 more source

Feeding ecology of an Amazonian electric knifefish under altered flood‐pulse dynamics caused by hydroelectric damming

Journal of Fish Biology, EarlyView.
Abstract This study evaluated the effects of the controlled flood pulse on diet composition, trophic niche breadth and feeding intensity of Archolaemus janeae, an electric knifefish species with a restricted distribution in the Amazon Basin. Monthly samples were collected from December 2020 to November 2021 in the Volta Grande stretch of the Xingu ...
Ana F. V. N. M. Costa, Antonio A. Jardim Jr, Erival G. Prata, Rafael R. Gusmão, Angelo J. Faro Júnior, Alan S. Fonseca, Danielly T. Hashiguti, Luciano F. A. Montag, Tiago M. S. Freitas   +8 more
wiley   +1 more source

Pigmentation disorders in three specimens of spiny dogfish, Squalus acanthias Linnaeus, 1758, from the Gulf of Venice, northern Adriatic Sea

Journal of Fish Biology, EarlyView.
Abstract This study reports three cases of pigmentation disorders in Squalus acanthias from the Gulf of Venice. Two specimens exhibited spotless phenotypes, whereas one exhibited hypermelanism. Morphological assessments were conducted for two individuals, alongside genetic analysis of mitochondrial genes to determine phylogeographic relationships. Both
Bernardi Jacopo, Finotto Licia, Catalano Giusy, Crobe Valentina, Cariani Alessia, Ferrari Alice   +5 more
wiley   +1 more source

Potential Trophic Competition Between the European Perch Perca fluviatilis and Pikeperch Sander lucioperca

International Review of Hydrobiology, Volume 111, Issue 1, June 2026.
ABSTRACT The European perch Perca fluviatilis and pikeperch Sander lucioperca can co‐occur, potentially competing for food resources. However, few studies have addressed the potential feeding competition between these species. We used carbon and nitrogen stable isotope analysis to assess the potential trophic competition between these species in two ...
Mathieu Toutain, Phillip J. Haubrock, Nadège Belouard, Irmak Kurtul, Sadi Aksu, Özgür Emiroglu, Ali Serhan Tarkan, Paride Balzani   +7 more
wiley   +1 more source

Contemporary Methods for Capturing Juvenile Salmonids in the Marine Environment

Fish and Fisheries, Volume 27, Issue 2, Page 160-178, March 2026.
ABSTRACT Anadromous salmonids play vital roles in marine and freshwater ecosystems. The most abundant of these fishes—Pacific salmon (Oncorhynchus spp.)—are integral to coastal ecosystems and communities across the North Pacific Rim, but numerous populations are experiencing dramatic declines, particularly towards the south of their range.
Sean C. Godwin, Emma M. Atkinson, Jamieson B. Atkinson, Mackenzie C. Bartlett, William D. P. Duguid, Marc Trudel, Andrew W. Bateman   +6 more
wiley   +1 more source

Productivity of Bottom gillnet fishing gear on fish landing results at Fish Landing Base (PPI) Ujong Seurangga [PDF]

BIO Web of Conferences
The bottom gillnet is a passive fishing gear resembling a rectangle, designed with floats on the top and sinkers on the bottom. Evaluating the productivity of the bottom gillnets is crucial for assessing their effectiveness in catching fish.
Rizki Purnama Nanda, Miswar Edy, Fitriani Riska, Maulinda Maulinda   +3 more
doaj   +1 more source

Marine Mammals in the Anthropocene: Developing a Systematic Evidence Base of Threats to Nineteen Species

Mammal Review, Volume 56, Issue 1, March 2026.
Marine mammals are vulnerable to a variety of anthropogenic threats, yet a global systematic map of the literature for 19 species found both spatial and temporal disparity in research effort between threats and between species. There are knowledge gaps for species and threats, with effort unequal across many species' ranges.
Emily L. Hague, Rachael R. Sinclair, Joanna L. Kershaw, Davina Derous, Ross M. Culloch, Carol E. Sparling, Nicholas Baker‐Horne, Marija Sciberras, Teresa F. Fernandes, Lauren H. McWhinnie   +9 more
wiley   +1 more source

Length‐Based Assessment of the Seven Most Commonly Caught Coral Reef Fish Species to Support Improve Management of Small‐Scale Fisheries in Southwest Madagascar

Aquaculture, Fish and Fisheries, Volume 6, Issue 1, February 2026.
ABSTRACT The status of most fish stocks in Madagascar remains poorly documented. Given their importance for food security and livelihoods, it is necessary to define management measures with reliable data. This study applied a length‐based Bayesian biomass (LBB) estimation method for analysing the fisheries' representative length‐frequency data of seven
Miarisoa Lalaina Rakotonaivo, Lala N. J. Ranaivomanana, Charlotte Gough, Jérémie R. Ndriamanja, Danny Kornelio Ravelojaona, Ravakiniaina Frida Razafinaivo, Daniel Raberinary   +6 more
wiley   +1 more source

Preliminary Data Regarding the Physiological State of Alosa immaculata (Bennett, 1835) During Spawning Migration

Aquaculture, Fish and Fisheries, Volume 6, Issue 1, February 2026.
ABSTRACT Reproductive migration in anadromous fish involves complex physiological adjustments to support intense metabolic and reproductive demands. In the case of Alosa immaculata, a key migratory species of the lower Danube River, these adaptations can be assessed through hematological and biochemical indicators.
Angelica Dobre, Maria Desimira Stroe, Patrick Lambert, Floricel Maricel Dima   +3 more
wiley   +1 more source

Trophic Ecology of Loggerhead Turtles (Caretta caretta) in Southern Brazil: Insights From Stable Isotopes

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 2, February 2026.
ABSTRACT This study aimed to investigate the trophic ecology of loggerhead turtles recorded stranded along the Paraná coast in southern Brazil. Carbon and nitrogen stable isotopes were analysed in muscle tissues from 20 loggerhead turtles and in 69 specimens representing 12 prey species (molluscs, crustaceans and teleost fishes).
Gleici Montanini, Mariana Cappello Neves, Nara Oliveira‐Ferreira, Edmar Antonio Mazzi, Camila Domit, Plínio Barbosa de Camargo, José Lailson‐Brito, Tatiana Lemos Bisi   +7 more
wiley   +1 more source