Data/hora: 01/06/2024 01:24:08

Provedor de dados: | 50
País: | Colombia
Título: | LA ALIMENTACIÓN DE TIBURONES MARTILLO JOVENES (SPHYRNA LEWINI) CAPTURADOS EN EL GOLFO DE NICOYA, COSTA RICA
Autores: | Zanella Cesarotto,Ilena; López Garro,Andrés; Arauz Vargas,Randall.
Data: | 2010-12-01
Ano: | 2010
Palavras-chave: | Scalloped hammerhead shark; Stomach contents; Gulf of Nicoya; Relative importance index.
Resumo: | Sharks present strong intraspecific changes in feeding habits, which may vary according to size, geographic location and season. This study analyzed the stomach contents of 52 juvenile scalloped hammerhead sharks (25 females and 27 males) caught by artisanal vessels in the Gulf of Nicoya. Regarding the organisms found in the stomachs, 41.07 % were teleost fish, 30.36 % mollusks and 28.57 % crustaceans. Mollusks presented the highest Relative Importance Index (RII) (43.05 %), followed by teleost fish (41.37 %) and crustaceans (15.58 %). Squids (Loliginidae) were the items with the greatest RII (32.57 %). By means of the Pianka index, a relatively low overlap between sexes was identified, suggesting a spatial sexual segregation and, in consequence, an ecological niche separation between male and female hammerhead sharks.
Tipo: | Info:eu-repo/semantics/report
Idioma: | Espanhol
Identificador: | http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612010000200011

Editor:

INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS "JOSE BENITO VIVES DE ANDRÉIS" (INVEMAR)

INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS -JOSE BENITO VIVES DE ANDRÉIS- (INVEMAR)

Formato: | text/html
Fonte: | Boletín de Investigaciones Marinas y Costeras - INVEMAR  v.39 n.2 2010
Fonte: | info:eu-repo/semantics/openAccess