Show simple item record

dc.contributor.authorSilva, Guelson Batista da
dc.contributor.authorHazin, Humberto Gomes
dc.contributor.authorVieira Hazin, Fabio Hissa
dc.contributor.authorVaske-Jr, Teodoro [UNESP]
dc.identifier.citationJournal Of Applied Ichthyology. Hoboken: Wiley, v. 35, n. 5, p. 1111-1118, 2019.
dc.description.abstractThe present study aims to characterize and compare the diet of bigeye and yellowfin tunas caught on aggregated schools in the western equatorial Atlantic Ocean. The samples were collected from January 2011 to June 2016. The tunas were measured on board and the stomachs were removed after evisceration. The stomachs were analyzed regarding their Index of Fullness and the importance of each prey in the diet was estimated by the Index of Relative Importance (IRI). The diet overlap was assessed by the Morisita-Horn's Index, Non-Metric Multidimensional Scale (NMDS), and Analysis of Similarity (ANOSIM). The feeding strategy was determined by the Costello's Diagram. The 195 bigeye and 212 yellowfin tunas ranged in fork length from 51 to 137 cm and 43 to 174 cm, respectively. The diet of bigeye tuna was composed of 10 families of fish, three cephalopod families, and four crustacean orders. The diet of yellowfin tuna was composed of 11 families of fish, three cephalopod families, and three crustacean orders. The yellowfin tuna seems to feed upon more abundant prey species near the surface like flying fish, which have the concentration enhanced by the light attractors on the boat, and occasionally on other prey from deeper habitats like lanternfish, squids, and pomfret. Bigeye tuna feed mainly at prey that commonly occurs in deeper habitats like squids, drift fish, lanternfish, and pomfret.en
dc.relation.ispartofJournal Of Applied Ichthyology
dc.sourceWeb of Science
dc.subjectfeeding habits
dc.subjectFish Aggregated Devices (FADs)
dc.subjectfood item
dc.subjectprey size
dc.subjectstomach content
dc.titleDiet composition of bigeye tuna (Thunnus obesus) and yellowfin tuna (Thunnus albacares) caught on aggregated schools in the western equatorial Atlantic Oceanen
dc.contributor.institutionUniv Fed Rural Semi Arido
dc.contributor.institutionUniv Fed Rural Pernambuco
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.affiliationUniv Fed Rural Semi Arido, Dept Ciencias Anim, Av Francisco Mota,572, BR-59625900 Mossoro, RN, Brazil
dc.description.affiliationUniv Fed Rural Pernambuco, Dept Pesca & Aquicultura, Recife, PE, Brazil
dc.description.affiliationUniv Estadual Paulista, Sao Vicente, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Sao Vicente, Brazil
dc.rights.accessRightsAcesso restrito
Localize o texto completo

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record