Hábitos alimentarios del tiburón zorro Alopias superciliosus (Lowe, 1839), en el Pacífico ecuatoriano

Carlos Polo-Silva; Álvaro Baigorrí-Santacruz; Felipe Galván-Magaña; Marcela Grijalba-Bendeck; Adolfo Sanjuan-Muñoz

Hábitos alimentarios del tiburón zorro Alopias superciliosus (Lowe, 1839), en el Pacífico ecuatoriano

Translated title of the contribution: Food habits of thresher shark Alopias superciliosus (Lowe, 1839) in Ecuadorian Pacific

Carlos Polo-Silva, Álvaro Baigorrí-Santacruz, Felipe Galván-Magaña, Marcela Grijalba-Bendeck, Adolfo Sanjuan-Muñoz

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

The feeding habits of the common thresher shark (Alopias superciliosus) from the Pacific coast of Ecuador were investigated by using frequency of ocurrence, numeric and gravimetric methods. A total of 122 individuals were collected from July to December 2003 and grouped by sex and maturity state (mature vs. inmature). Stomach contents were examined and classified by components to infer trophic relations. A total of 27 prey taxa were observed as part of the diet of Alopias superciliosus. Overall, Larimus argenteus (RII=1497) was the most important in the diet, followed by Merluccius gayi (RII=333), Dosidicus gigas (RII=281) and Benthosema panamense (RII=239). The Levin's index allowed to define A. superciliosus as an specialist predator that feeds in oceanic waters.

Translated title of the contribution	Food habits of thresher shark Alopias superciliosus (Lowe, 1839) in Ecuadorian Pacific
Original language	Spanish
Pages (from-to)	59-69
Number of pages	11
Journal	Revista de Biologia Marina y Oceanografia
Volume	42
Issue number	1
State	Published - Apr 2007
Externally published	Yes

Cite this

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title = "H{\'a}bitos alimentarios del tibur{\'o}n zorro Alopias superciliosus (Lowe, 1839), en el Pac{\'i}fico ecuatoriano",

abstract = "The feeding habits of the common thresher shark (Alopias superciliosus) from the Pacific coast of Ecuador were investigated by using frequency of ocurrence, numeric and gravimetric methods. A total of 122 individuals were collected from July to December 2003 and grouped by sex and maturity state (mature vs. inmature). Stomach contents were examined and classified by components to infer trophic relations. A total of 27 prey taxa were observed as part of the diet of Alopias superciliosus. Overall, Larimus argenteus (RII=1497) was the most important in the diet, followed by Merluccius gayi (RII=333), Dosidicus gigas (RII=281) and Benthosema panamense (RII=239). The Levin's index allowed to define A. superciliosus as an specialist predator that feeds in oceanic waters.",

keywords = "Alopias superciliosus, Alopiidae, Ecuador, Stomach content, Trophic ecology",

author = "Carlos Polo-Silva and {\'A}lvaro Baigorr{\'i}-Santacruz and Felipe Galv{\'a}n-Maga{\~n}a and Marcela Grijalba-Bendeck and Adolfo Sanjuan-Mu{\~n}oz",

year = "2007",

month = apr,

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journal = "Revista de Biologia Marina y Oceanografia",

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T1 - Hábitos alimentarios del tiburón zorro Alopias superciliosus (Lowe, 1839), en el Pacífico ecuatoriano

AU - Polo-Silva, Carlos

AU - Baigorrí-Santacruz, Álvaro

AU - Galván-Magaña, Felipe

AU - Grijalba-Bendeck, Marcela

AU - Sanjuan-Muñoz, Adolfo

PY - 2007/4

Y1 - 2007/4

N2 - The feeding habits of the common thresher shark (Alopias superciliosus) from the Pacific coast of Ecuador were investigated by using frequency of ocurrence, numeric and gravimetric methods. A total of 122 individuals were collected from July to December 2003 and grouped by sex and maturity state (mature vs. inmature). Stomach contents were examined and classified by components to infer trophic relations. A total of 27 prey taxa were observed as part of the diet of Alopias superciliosus. Overall, Larimus argenteus (RII=1497) was the most important in the diet, followed by Merluccius gayi (RII=333), Dosidicus gigas (RII=281) and Benthosema panamense (RII=239). The Levin's index allowed to define A. superciliosus as an specialist predator that feeds in oceanic waters.

AB - The feeding habits of the common thresher shark (Alopias superciliosus) from the Pacific coast of Ecuador were investigated by using frequency of ocurrence, numeric and gravimetric methods. A total of 122 individuals were collected from July to December 2003 and grouped by sex and maturity state (mature vs. inmature). Stomach contents were examined and classified by components to infer trophic relations. A total of 27 prey taxa were observed as part of the diet of Alopias superciliosus. Overall, Larimus argenteus (RII=1497) was the most important in the diet, followed by Merluccius gayi (RII=333), Dosidicus gigas (RII=281) and Benthosema panamense (RII=239). The Levin's index allowed to define A. superciliosus as an specialist predator that feeds in oceanic waters.

KW - Alopias superciliosus

KW - Alopiidae

KW - Ecuador

KW - Stomach content

KW - Trophic ecology

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M3 - Artículo

SN - 0717-3326

VL - 42

SP - 59

EP - 69

JO - Revista de Biologia Marina y Oceanografia

JF - Revista de Biologia Marina y Oceanografia

IS - 1

ER -

Hábitos alimentarios del tiburón zorro Alopias superciliosus (Lowe, 1839), en el Pacífico ecuatoriano

Abstract

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