Results 11 to 20 of about 5,573 (111)

Effects of human footprint and biophysical factors on the body-size structure of fished marine species. [PDF]

open access: yesConserv Biol, 2022
Abstract Marine fisheries in coastal ecosystems in many areas of the world have historically removed large‐bodied individuals, potentially impairing ecosystem functioning and the long‐term sustainability of fish populations. Reporting on size‐based indicators that link to food‐web structure can contribute to ecosystem‐based management, but the ...
Bosch NE   +31 more
europepmc   +2 more sources

Shearing Tooth Morphology May Allow Sharks to Access Higher Trophic Levels at Smaller Sizes. [PDF]

open access: yesEcol Evol
Predator morphology imposes limitations on prey selection due to biomechanical constraints, making some prey functionally inaccessible and thereby constraining predator trophic niches. We assessed how two key components of trophic morphology—tooth shape and body size—affect prey selectivity and trophic niche in two sympatric sharks with contrasting ...
Riverón S   +7 more
europepmc   +2 more sources

A case of intersex occurrence in Steindachneridion parahybae (Steindachner, 1877) (Siluriformes: Pimelodidae) under captivity condition: A cytogenetic and morphological study [PDF]

open access: yes, 2016
Poco se sabe sobre la biología reproductiva de Steindachneridion parahybae , una especie de teleósteo gonocorístico en peligro de extinción que habita la cuenca del río Paraíba do Sul y en éste trabajo se describe por primera vez la aparición de ...
Caneppele, Danilo   +4 more
core   +2 more sources

Alimentación del tiburón marrajo Isurus oxyrinchus Rafinesque, 1810 (Lamniformes: Lamnidae) en el Pacífico suroriental [PDF]

open access: yes, 2009
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572009000200017&nrm=isoIn order to examine the feeding of mako shark Isurus oxyrinchus, the stomach content of 205 specimens, captured between 21º and 35ºS and 78º and 118º W off Chile ...
Barría, Patricio   +2 more
core   +2 more sources

Regulación genética de la determinación sexual y diferenciación gonadal en peces teleósteos

open access: yesEntramado, 2022
Comprender el control de la determinación del sexo y la diferenciación sexual en peces es fundamental para mejorar aspectos de manejo, productividad, economía y conservación de las especies.
Cruz Elena Enriquez-Valencia   +2 more
doaj   +1 more source

Plasticidade trófica em peixes de água doce

open access: yesActa Scientiarum: Biological Sciences, 2008
Esta revisão apresenta uma síntese a respeito da plasticidade alimentar em teleósteos de água doce em relação às variações espaço-temporais, ontogenéticas, individuais e comportamentais.
Milza Celi Fedatto Abelha   +2 more
doaj   +1 more source

Ecología trófica y reproductiva del bagresito endémico Trichomycterus nigromaculatus (Siluriformes: Trichomycteridae) en el río Gaira, Colombia

open access: yesIntropica, 2023
El río Gaira, en Minca, SNSM, sufre una transformación acelerada de sus paisajes naturales, fomentada por actividades como el turismo y la agricultura.
Eduardo J. Ibarra-Trujillo   +1 more
doaj  

Report of the Inter-American Tropical Tuna Commission for the year 2008 [PDF]

open access: yes, 2010
ENGLISH: The Inter-American Tropical Tuna Commission (IATTC) operates under the authority and direction of a convention originally entered into by Costa Rica and the United States. The convention, which came into force in 1950, is open to adherence by

core  

Atresia folicular en peces teleósteos: Una revisión [PDF]

open access: yes, 2012
Many fish species with economic importance have been heavily exploited, causing the collapse of their fisheries. For this reason, there have been attempts to cultivate fish species for commercial purposes, resulting in varying success.
Berland Olea, Marco   +2 more
core   +1 more source

Legacy effect of non‐native Eucalyptus trees on the regeneration of coastal plant communities

open access: yesRestoration Ecology, Volume 34, Issue 1, January 2026.
Abstract Introduction When the elimination of a non‐native plant is insufficient to promote the regeneration of indigenous vegetation, secondary interventions, such as the removal of non‐native plant litter, may be appropriate due to legacy effects.
M. A. Borgert   +5 more
wiley   +1 more source

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