Results 61 to 70 of about 596 (182)

Mexican Freshwater Fish: Identifying Conservation Priorities and High‐Risk Areas for Fisheries Under Climate Change

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 5, May 2026.
ABSTRACT Freshwater fish are essential components of aquatic ecosystems, providing key ecological functions and supporting livelihoods. Climate change poses a significant threat to freshwater biodiversity; consequently, both its conservation and the food security it sustains may be at risk.
Rafael Sebastián Muratalla‐Miranda   +3 more
wiley   +1 more source

The Abrupt and Persistent Decline in Recruitment Success in Northeast Arctic Cod: A Review of Probable Causes

open access: yesFish and Fisheries, Volume 27, Issue 3, Page 643-659, May 2026.
ABSTRACT Most of the previously large cod stocks in the North Atlantic are depleted to very low levels. A notable exception has been the Northeast Arctic cod inhabiting the Barents Sea. This cod stock reached a record high level around 2013, but since then has declined sharply, with older fish being fished out and few new recruits entering the stock ...
Edda Johannesen   +16 more
wiley   +1 more source

Can larvae of a marine fish adapt to ocean acidification? Evaluating the evolutionary potential of California Grunion (Leuresthes tenuis)

open access: yesEvolutionary Applications, Volume 12, Issue 3, Page 560-571, March 2019., 2019
Abstract Ocean acidification can reduce the growth and survival of marine species during their larval stages. However, if populations have the genetic capacity to adapt and increase their tolerance of low pH and high pCO2 levels, this may offset the harmful effects of ocean acidification.
Alexander J. Tasoff, Darren W. Johnson
wiley   +1 more source

Comparing Aquatic Environmental DNA Collection Methods Across a Diel Cycle in a Lotic System

open access: yesEnvironmental DNA, Volume 8, Issue 2, March/April 2026.
Water samples were collected over 25 h from the Tangipahoa River, Louisiana, using active and passive environmental DNA methods to detect fish assemblages. Active sampling involved collecting water samples at hourly intervals for 25 h, whereas passive sampling deployed a stationary filter for 25 h.
Camden E. Oathout   +3 more
wiley   +1 more source

Changes in Fish Communities of Lake Ontario Coastal Wetlands before and after Remedial Action Plans

open access: yesInternational Scholarly Research Notices, Volume 2011, Issue 1, 2011., 2011
We conducted a change‐detection analysis to determine if improvements in the habitat quality of coastal wetlands could be attributed to Remedial Action Plans (RAPs) of Lake Ontario. We used a 5‐km buffer relative to each recent site to “resample” an existing database of spawning/nursery habitat from the early 1980s to derive a “historic” species list ...
Titus Seilheimer   +4 more
wiley   +1 more source

Dietary prebiotics and synbiotics modulate gut microbiota and improve growth performance of Mexican pike silverside Chirostoma estor [PDF]

open access: yesPeerJ
Aquaculture is the fastest-growing food production sector worldwide and is vital for a sustainable animal protein supply. However, optimizing fish performance in captivity remains a major challenge, requiring functional diets that support a healthy ...
Jesús Mateo Amillano-Cisneros   +8 more
doaj   +2 more sources

Persisting at the Edge of Ecological Collapse: The Impact of Urbanization on Fish and Amphibian Communities From Lake Xochimilco

open access: yesEnvironmental DNA, Volume 7, Issue 4, July–August 2025.
ABSTRACT Freshwater ecosystems are globally threatened by habitat loss, pollution, and invasive species, all of which are particularly acute in urban areas. To assess the impacts of urbanization on freshwater biodiversity—specifically the effects of alien species on native primary aquatic vertebrates—we investigated the World Heritage Site, Lake ...
Alejandro Maeda‐Obregon   +12 more
wiley   +1 more source

Análisis filogeográfico del pez blanco Chirostoma humboldtianum (Valenciennes, 1835) (Pisces: Atheriniformes: Atherinopsidae) [PDF]

open access: yes, 2015
Chirostoma humboltianum es una especie endémica distribuida ampliamente en cuencas aisladas en la región Central de México. Durante el Mioceno estas cuencas estuvieron conectadas, permitiendo la dispersión y colonización de nuevos sistemas hidrológicos ...
ROSA MARIA GARCIA MARTINEZ
core   +2 more sources

Desarrollo de la sagitta en juveniles y adultos de Odontesthes argentinensis (Valenciennes, 1835) y O. bonariensis (Valenciennes, 1835) de la provincia de Buenos Aires, Argentina (Teleostei: Atheriniformes) Development of the sagitta in young and adults of Odontesthes argentinensis (Valenciennes, 1835) and Odontesthes bonariensis (Valenciennes, 1835) from Buenos Aires province, Argentina (Teleostei: Atheriniformes)

open access: yesRevista Chilena de Historia Natural, 2005
Se describió el desarrollo del otolito Sagitta de juveniles y adultos de Odontesthes argentinensis procedentes de Punta Rasa (36°22' S) y Miramar (38°16' S) y de Odontesthes bonariensis de la Laguna de Chascomús (35° 36' S).
ANDREA D TOMBARI   +2 more
doaj  

Spatial and Ontogenetic Patterns in the Trophic Ecology of Two Predatory Fishes in a Large River

open access: yesEcology of Freshwater Fish, Volume 34, Issue 1, January 2025.
ABSTRACT Fishes use a variety of physical and biological resources that shift ontogenetically, seasonally and spatially. Quantifying what resources such as prey are required for persistence can improve understanding of ecological needs of fishes and riverine macrosystem functioning.
Shaley A. Valentine   +1 more
wiley   +1 more source

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