Results 91 to 100 of about 2,343 (186)

Sexual Dimorphism in Fin Size and Shape in North American Killifish

Ecology and Evolution, Volume 15, Issue 4, April 2025.
Sexual dimorphism is pervasive in North American killifish in the size and shape of their dorsal and anal fins. These fins perform multiple functions, including grasping females during spawning, dominance displays towards rival males, and courtship towards females. Sexual selection may share a common direction across this group.
Elijah J. Davis, Kasey Brockelsby, Milton Tan, Rebecca C. Fuller   +3 more
wiley   +1 more source

Non‐Native Species Abundance Decreases the Co‐Occurrence Between Native and Non‐Native Species Through Time at Any Phylogenetic Distance

Ecology Letters, Volume 28, Issue 4, April 2025.
We investigate how non‐native species can impact native species in a 30‐year time scale by estimating the co‐occurrence between native and non‐native species pairs. We show that interannual variability of non‐native species abundance could be more important than long‐term abundance trends in determining the effects of non‐native species through time ...
Amanda Cantarute Rodrigues, Rafaela Vendrametto Granzotti, Natália Carneiro Lacerda dos Santos, Angelo Antonio Agostinho, Luiz Carlos Gomes   +4 more
wiley   +1 more source

Current status and prospects for efficient aquaculture of the African bonytongue, Heterotis niloticus (Cuvier, 1829): Review

Journal of the World Aquaculture Society, Volume 56, Issue 2, April 2025.
Abstract The aquaculture industry plays a crucial role in global food production and is expected to expand in response to the increasing demand for aquatic products. To sustain this growth, aquaculturists must develop new strategies and improve existing practices to address various challenges. In Africa, the sustainable development of aquaculture could
Missinhoun Dagoudo, David Benhaïm, Elie Montchowui   +2 more
wiley   +1 more source

New univariate characterization of fish community size structure improves precision beyond the Large Fish Indicator [PDF]

arXiv, 2017
The size structure of fish-communities is an emergent high-level property of marine food webs responsive to changes in structure and function. To measure this food web property using data arising from routine fisheries surveys, a simple metric known as Typical Length has been proposed as more suitable than the Large Fish Indicator, which has been ...
arxiv  

Multiple Pathways of Visual Adaptations for Water Column Usage in an Antarctic Adaptive Radiation

Ecology and Evolution, Volume 15, Issue 3, March 2025.
By investigating the diversification of the visual system in notothenioids, we reveal lineages at equivalent depths often depict extremes in eye size with striking convergences in tuning sites between distantly related species that are likely driven by the unusual environmental conditions of the Southern Ocean.
Ella B. Yoder, Elyse Parker, Bruno Frédérich, Alexandra Tew, Christopher D. Jones, Alex Dornburg   +5 more
wiley   +1 more source

A Comparison of the Innate and Adaptive Immune Systems in Cartilaginous Fish, Ray-Finned Fish, and Lobe-Finned Fish

Frontiers in Immunology, 2019
The immune system is composed of two subsystems—the innate immune system and the adaptive immune system. The innate immune system is the first to respond to pathogens and does not retain memory of previous responses.
Nicole C. Smith, Matthew L. Rise, Sherri L. Christian   +2 more
doaj   +1 more source

Genetical adaptation of common kilka Clupeonella cultriventris (Nordmann, 1840) (Actinopterygii: Clupeidae) [PDF]

arXiv, 2013
It is the first time, when genetic diversity and the common kilka population structure were investigated throughout the areal. Data about the species condition at the Upper Volga basins were updated accordingly to modern condition. Physiological and ecological adaptations to northern water basins were evaluated. Significance of interaction between some
arxiv  

Counting Fish and Dolphins in Sonar Images Using Deep Learning [PDF]

arXiv, 2020
Deep learning provides the opportunity to improve upon conflicting reports considering the relationship between the Amazon river's fish and dolphin abundance and reduced canopy cover as a result of deforestation. Current methods of fish and dolphin abundance estimates are performed by on-site sampling using visual and capture/release strategies.
arxiv  

Improving the Chromosome-Level Genome Assembly of the Siamese Fighting Fish (Betta splendens) in a University Master’s Course

G3: Genes, Genomes, Genetics, 2020
Ever decreasing costs along with advances in sequencing and library preparation technologies enable even small research groups to generate chromosome-level assemblies today.
Stefan Prost, Malte Petersen, Martin Grethlein, Sarah Joy Hahn, Nina Kuschik-Maczollek, Martyna Ewa Olesiuk, Jan-Olaf Reschke, Tamara Elke Schmey, Caroline Zimmer, Deepak K. Gupta, Tilman Schell, Raphael Coimbra, Jordi De Raad, Fritjof Lammers, Sven Winter, Axel Janke   +15 more
doaj   +1 more source

New records of fishes (Actinopterygii: Ostariophysi) from the Upper Tapajós River Basin

Check List, 2012
The first report of Sartor (Anostomidae) and Tatia intermedia (Auchenipteridae) for the Upper Tapajós River Basin are presented here. Sartor is very rare on collections, and is reported only from the Trombetas, Tocantins and Upper Xingu river basins. Tatia intermedia is registered in the upper reaches of the Araguaia, Tocantins, Xingu, and Capim rivers,
Dagosta, Fernando, Pastana, Murilo, Esguícero, André   +2 more
openaire   +5 more sources