Results 21 to 30 of about 162 (119)

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

Ecology 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, Vincent Raoult, David J. Slip, Federico Mas, Martín Laporta, Inés Pereyra, Santiago Silveira, Robert G. Harcourt   +7 more
wiley   +1 more source

The Jack mackerel Trachurus murphyiand the environmental macro-scale variables

Revista 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

Patrones de variabilidad ambiental en el mar peruano

Revista Peruana de Biología, 2013
Se describen los escenarios ambientales y los patrones de variabilidad observados en el mar peruano a partir del análisis de información obtenida por el Instituto del Mar del Perú entre los años 1960 – 2011.
Roberto Flores, Marco Espino, Gertrudes Luque, Jorge Quispe   +3 more
doaj   +1 more source

Reproductive aspects of Jack mackerel Trachurus murphy

Revista Peruana de Biología, 2013
The time series of monthly gonadosomatic index (GSI) and biannual size at first maturity of Jack mackerel Trachurus murphyiNichols 1920 in Peru between 1967 and 2012 is analyzed and discussed.
Ángel Perea, Julio Mori, Betsy Buitrón, Javier Sánchez   +3 more
doaj   +1 more source

Distribution of three mobulid ray species (Mobula tarapacana, M. mobular, and M. thurstoni) in the western Atlantic and Caribbean

Endangered Species Research
Populations of rays in the family Mobulidae have been declining globally, mainly due to fishing pressure. Within this family, devil rays remain far less understood than the more commonly studied manta rays, largely due to the rarity of occurrence in many
JH Pate, A Boggio-Pasqua, N Bucair, A Domingo, N Ehemann, R Forselledo, V Fong, C Horn, C Jones, M Macías-Cuyare, F Mas, SA Mendonça, GM Ochoa, NA Pelletier, JR Willmott, LA Zambrano-Vizquel, GMW Stevens   +16 more
doaj   +1 more source

Patrones de distribución y abundancia del jurel Trachurus murphyien el Perú

Revista Peruana de Biología, 2013
Se analiza información de cruceros bio-oceanográficos del IMARPE con estaciones hasta 100 mn de la costa y entre 0 y 180 m de profundidad entre 1961 y 2011; información de observadores científicos a bordo de buques arrastrero-factoría de media agua ...
Teobaldo Dioses
doaj   +1 more source

Hábitos alimentares das larvas de Engraulis no sul do Brasil

Boletim do Instituto de Pesca, 2018
Este trabalho teve por objetivo investigar os hábitos alimentares das larvas de Engraulis anchoita no extremo sul do Brasil. As amostras foram coletadas na primavera, verão, outono e inverno (1987-1991), utilizando rede Bongo com 60 cm de boca e ...
Kátia de Meirelles F. FREIRE, José Pablo CASTELLO   +1 more
doaj  

A genomic approach for the identification of population management units for the dolphinfish (Coryphaena hippurus) in the eastern Pacific

Frontiers in Marine Science
In the Tropical Eastern Pacific dolphinfish (TEP) Corypahena hippurus is part of commercial, recreational, and artisanal fisheries and is also caught incidentally by the tuna purse-seine and longline fisheries.
Adan Fernando Mar-Silva, Píndaro Díaz-Jaimes, Maried Ochoa-Zavala, Sofia Ortega-Garcia, Giovanna Sotil, Ana Alegre, Teddy Escarabay, Esteban Elias, Jose Miguel Carvajal-Rodríguez   +8 more
doaj   +1 more source

Tamaño óptimo de muestra del programa de observadores a bordo de la flota dirigida a la explotación de la anchoveta peruana (Engraulis ringens)

Revista Peruana de Biología, 2016
El monitoreo de la pesquería de anchoveta en el Perú es de suma importancia para la sostenibilidad del ecosistema de Humboldt. El Programa de observadores a bordo Bitácoras de Pesca constituye una rica plataforma de recolección de datos de las ...
Rocío Joo, Daniel Grados, Marilú Bouchon, Erich Díaz   +3 more
doaj   +1 more source

OCORRí­Å NCIA DE RECURSOS PESQUEIROS EPIPELÁGICOS NA POSIÇÃO 22º11’S í  039º55’W, BRASIL.

Boletim do Instituto de Pesca, 2018
Em local situado a 60 milhas do Cabo de São Tomé, Rio de Janeiro, sobre a isóbata dos 700 m, foi realizada pesca prospectiva de superfí­­cie com anzol e linha de mão ou vara, durante um ano e meio, obtendo-se as melhores capturas durante a noite ...
Luis Alberto ZAVALA-CAMIN, Ricardo Thadeu Barros GRASSI, Roberto Willian von SECKENDORFF, Glaucio Gonçalves TIAGO   +3 more
doaj