Tropical Scombrid Feeding Habits in the Central Pacific

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Abstract/Contents

Abstract: The feeding habits of tropical scombrid species was conducted through analysis of stomach contents of specimens collected in Hawaii and the Line Islands. Background research of scombrid feeding habits throughout the world led to expectations that the primary food source among specimens collected would be fish and cephalopods. A total of 44 fish were collected from Captain Cook, Hawaii, Christmas Island, and Palmyra Atoll. Yellowfin tuna were the most abundant species collected, though skipjack tuna, rainbow runners, and wahoo were also collected. Diets consisted primarily of megalops and other invertebrates, with fish and cephalopods as secondary or negligible food sources. The few specific prey species that were observed suggested possible selective feeding behavior in the Deep Scattering Layer. Disparity of composition of stomach contents from net tows sampling the Deep Scattering Layer also provided supporting evidence for selective feeding.

Type of resource	text
Date created	June 9, 2005

Author	McLean, Kevin

Subject	Stanford@SEA
Subject	S-199
Subject	Hopkins Marine Station
Subject	Department of Biology
Subject	Department of Earth System Science
Subject	BIOHOPK 182H
Subject	BIOHOPK 323H
Subject	EARTHSYS 323
Subject	ESS 323
Subject	scombrid
Subject	Hawaii
Subject	Line Islands
Subject	food source
Subject	cephalopod
Subject	fish
Subject	Captain Cook
Subject	Christmas Island
Subject	Kiribati
Subject	Palmyra
Subject	yellowfin
Subject	skipjack
Subject	rainbow runner
Subject	tuna
Subject	wahoo
Subject	megalops
Subject	invertebrates
Subject	diet
Subject	Deep Scattering Layer
Subject	selective feeding
Genre	Student project report

Location	https://purl.stanford.edu/wr266qx9067

Use and reproduction: User agrees that, where applicable, content will not be used to identify or to otherwise infringe the privacy or confidentiality rights of individuals. Content distributed via the Stanford Digital Repository may be subject to additional license and use restrictions applied by the depositor.
License: This work is licensed under a Creative Commons Attribution 3.0 Unported license (CC BY).

Preferred Citation: McLean, Kevin. 2005. Tropical Scombrid Feeding Habits in the Central Pacific. Unpublished Student Work, S-199, Stanford@SEA, Stanford Digital Repository. https://purl.stanford.edu/wr266qx9067.

Stanford@SEA -- Student papers

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