Results 71 to 80 of about 9,414 (203)

Differentiating salmonid migratory ecotypes through stable isotope analysis of collagen: Archaeological and ecological applications.

open access: yesPLoS ONE, 2020
The ability to distinguish between different migratory behaviours (e.g., anadromy and potamodromy) in fish can provide important insights into the ecology, evolution, and conservation of many aquatic species.
Eric Guiry   +13 more
doaj   +1 more source

A Review of a Decade of Anadromous Salmonid Hatchery (And Stocking) Research: Insights for Policy, Management and a Changing Climate

open access: yesFish and Fisheries, Volume 27, Issue 3, Page 431-450, May 2026.
ABSTRACT Hatcheries and stocking programmes have long been a cornerstone of fisheries management, seen as tools for fisheries enhancement and/or conservation of threatened populations. Their use draws controversy, however, from a growing body of research over the last 50 years suggesting that stocking can have negative consequences for wild stocks, and
Hannah L. Harrison   +15 more
wiley   +1 more source

Contrasting seasonal modulation of the stress response in male and female rainbow trout [PDF]

open access: yes, 2000
Between June and September the magnitude of the plasma cortisol response of maturing male and female rainbow trout to confinement was indistinguishable.
Carrick, T.R., Pottinger, T.G.
core   +2 more sources

Opening a can of worms: Archived canned fish fillets reveal 40 years of change in parasite burden for four Alaskan salmon species

open access: yesEcology and Evolution
How has parasitism changed for Alaskan salmon over the past several decades? Parasitological assessments of salmon are inconsistent across time, and though parasite data are sometimes noted when processing fillets for the market, those data are not ...
Natalie Mastick   +5 more
doaj   +1 more source

Spatial and ecological structure of the sockeye salmon population Oncorhynchus nerka of Kuril Lake [PDF]

open access: yesE3S Web of Conferences
This study examines the genetic structure of sockeye salmon populations in Kuril lake basin, focusing on the allelic frequencies of SNP loci that potentially carry an adaptive load. Our results reveal the division of sockeye salmon populations into three
Khrustaleva Anastasia
doaj   +1 more source

Bioimaging of sense organs and the central nervous system in extant fishes and reptiles in situ: A review

open access: yesThe Anatomical Record, Volume 309, Issue 4, Page 826-852, April 2026.
Bioimaging of the sense organs and brain of fishes and reptiles. Left panel: 3D reconstruction of the head and brain of the deep‐sea viperfish Chauliodus sloani following diceCT. Right panel: A 3D reconstruction of a 70‐day‐old embryo head of the bearded dragon Pogona vitticeps following diceCT, showing the position of the segmented brain within the ...
Shaun P. Collin   +9 more
wiley   +1 more source

Signatures of Wild Animal Life in Earth's Landscapes

open access: yesJournal of Geophysical Research: Earth Surface, Volume 131, Issue 4, April 2026.
Abstract Animals shape Earth surface processes and landforms by displacing Earth surface materials and by making them more or less susceptible to geophysical processes. Despite increased recognition of the global significance of animal landscape “signatures”, analysis of their magnitude and generality has not been possible until now.
Z. Khan   +7 more
wiley   +1 more source

Morphometric, meristics and comparative studies of Chrysichthys nigrodigititus (Lacepede) from Lagos Lekki and Badagry Lagoons, Lagos State, south west Nigeria [PDF]

open access: yes, 2005
Morphometric measurements, meristic counts and comparative studies of Chrysicthys nigrodigitatus samples from Lagos, Lekki, and Badagry Lagoons was carried out to determine the amount of variation among the species from the different locations using ...
Ajado, E.O.   +2 more
core  

Eco‐Evo‐Hydraulics: Integrating Fish Evolution Into Ecohydraulics for Conservation

open access: yesWater Resources Research, Volume 62, Issue 4, April 2026.
Abstract Riverine fish conservation in eco‐hydraulics is often based on restoring or regulating river habitat to a semi‐natural state. For example, ecohydraulic projects support fish populations by increasing river connectivity through fishways, and by maintaining or restoring natural flow variance to enhance habitat quality and availability.
Xiatong Cai   +10 more
wiley   +1 more source

Northerly Distribution of White Sharks, Carcharodon carcharias, in the Eastern Pacific and Relation to ENSO Events [PDF]

open access: yes, 2004
Twenty-nine verified records of white sharks, Carcharodon carcharias, from British Columbia and Alaska waters (1961–2004) are presented. Record locations ranged from lat. 48°48ʹN to lat.
Martin, R. Aidan
core  

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