Results 11 to 20 of about 71 (69)

Movements, Habitat Use, and Diving Behavior of Shortfin Mako in the Atlantic Ocean

open access: yesFrontiers in Marine Science, 2021
The shortfin mako is one of the most important shark species caught in Atlantic Ocean pelagic fisheries. Given increasing concerns for the stock status of the species, the present study was designed to fill gaps in the knowledge of habitat use and ...
Catarina C. Santos   +14 more
doaj   +1 more source

Beyond Post-release Mortality: Inferences on Recovery Periods and Natural Mortality From Electronic Tagging Data for Discarded Lamnid Sharks

open access: yesFrontiers in Marine Science, 2021
Accurately characterizing the biology of a pelagic shark species is critical when assessing its status and resilience to fishing pressure. Natural mortality (M) is well known to be a key parameter determining productivity and resilience, but also one for
Heather D. Bowlby   +13 more
doaj   +1 more source

Diet of three large pelagic fishes associated with drifting fish aggregating devices (DFADs) in the western equatorial Indian Ocean

open access: yesAnimal Biodiversity and Conservation, 2012
Dieta de tres peces pelágicos de gran tamaño asociados a agregaciones de peces bajo objetos flotantes (DFADs) en el Océano Índico ecuatorial occidental Los objetos flotantes congregan distintas especies de peces en aguas tropicales marinas. Se capturaron
M. A. Malone   +3 more
doaj   +3 more sources

Classification models based on the gonadosomatic index to determine gonadal maturity stages: a case study in the Peruvian anchovy Engraulis ringens

open access: yesScientia Marina
Accurate classification of gonadal maturity stages is essential to ensure reliable estimates of reproductive indicators. In Peruvian anchovy (Engraulis ringens), two gonadal maturity scales have been used: the empirical scale proposed by Einarsson et al.
Elmer Quispe-Salazar   +2 more
doaj   +1 more source

Validación del ritmo de formación de los anillos de crecimiento en otolitos del jurel Trachurus murphyiNichols 1920

open access: yesRevista Peruana de Biología, 2013
Se presentan resultados de la validación del crecimiento del jurel Trachurus murphyipor tres técnicas: 1) validación del primer anillo anual mediante lectura de microincrementos diarios; 2) análisis del crecimiento del radio del otolito entre el ...
Carlos Goicochea   +5 more
doaj   +1 more source

Análisis de la pesquería del jurel Trachurus murphyien el Perú

open access: yesRevista Peruana de Biología, 2013
La presencia del jurel Trachurus murphyi ha sido registrado en los desembarques de la pesca artesanal en Perú desde 1907. A partir del año 2000, las capturas de T.
Miguel Ñiquen   +3 more
doaj   +1 more source

The Jack mackerel Trachurus murphyiand the environmental macro-scale variables

open access: yesRevista Peruana de Biología, 2013
This paper analyses information on various macro environmental variables available since 1876 for the Southeast Pacific and more recent data on Jack mackerel Trachurus murphyi (Nichols, 1920) landings and biomass in the Peruvian sea, relating them to ...
Marco Espino
doaj   +1 more source

Edad y crecimiento del jurel Trachurus murphyien el Perú

open access: yesRevista Peruana de Biología, 2013
Se determinó la edad y se estimó el crecimiento del jurel Trachurus murphyiNichols 1920, mediante la lectura y medición de anillos anuales de crecimiento en 977 pares de otolitos de especímenes entre 3 y 71 cm de longitud total colectados dentro del ...
Teobaldo Dioses
doaj   +1 more source

Shearing Tooth Morphology May Allow Sharks to Access Higher Trophic Levels at Smaller Sizes

open access: yesEcology and Evolution, Volume 15, Issue 8, August 2025.
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 ...
Sabrina Riverón   +7 more
wiley   +1 more source

Ecología trófica del jurel Trachurus murphyien el Perú entre 1977 – 2011

open access: yesRevista Peruana de Biología, 2013
Se analizó la variabilidad espacio-temporal de la dieta de jurel Trachurus murphyi frente a Perú de 1977 a 2011. Un total de 21058 estómagos fueron analizados utilizando métodos bivariados y el Modelo de Árbol de Regresión Multivariado (ARM).
Ana Alegre, Pepe Espinoza, Marco Espino
doaj   +1 more source

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