New trophic link and potential feeding area of dwarf minke whale ( Balaenoptera acutorostrata subsp.) in mid latitude waters of the southwestern Atlantic Ocean

Abstract The stomach content of a male, immature dwarf minke whale ( Balaenoptera acutorostrata subsp.) stranded in September of 2008 in southern Brazil revealed a large consumption of the Argentine shortfin squid ( Illex argentinus ), probably in multiple feeding events. Stable isotopes signals fro...

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Bibliographic Details
Published in:Mammalia
Main Authors: Milmann, Lucas, Machado, Rodrigo, Sucunza, Federico, Oliveira, Larissa Rosa de, Santos, Roberta Aguiar dos, Di Beneditto, Ana Paula Madeira, Rezende, Carlos Eduardo de, Baumgarten, Julio, Ott, Paulo Henrique
Format: Article in Journal/Newspaper
Language:English
Published: Walter de Gruyter GmbH 2018
Subjects:
Animal Science and Zoology
Ecology, Evolution, Behavior and Systematics
Argentine
Balaenoptera acutorostrata
baleen whales
minke whale
Online Access:http://dx.doi.org/10.1515/mammalia-2017-0127
http://www.degruyter.com/view/j/mamm.2019.83.issue-1/mammalia-2017-0127/mammalia-2017-0127.xml
https://www.degruyter.com/document/doi/10.1515/mammalia-2017-0127/xml
https://www.degruyter.com/document/doi/10.1515/mammalia-2017-0127/pdf
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Summary:Abstract The stomach content of a male, immature dwarf minke whale ( Balaenoptera acutorostrata subsp.) stranded in September of 2008 in southern Brazil revealed a large consumption of the Argentine shortfin squid ( Illex argentinus ), probably in multiple feeding events. Stable isotopes signals from kidney and liver samples of the whale are consistent with values for this squid species, and prey size indicates consumption over spawning aggregations near the continental slope off southern Brazil. The present record adds a new prey species for dwarf minke whale and reinforces the hypothesis that some baleen whales could feed in middle latitudes of the Brazilian coast.

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