期刊
MARINE POLLUTION BULLETIN
卷 93, 期 1-2, 页码 270-277出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2015.01.012
关键词
Chinese white dolphins; Cephalopods; Dietary shift; Inshore-offshore movement; Habitat overlapping; Health threat
资金
- Formosa petroleum company through the Taiwanese Society of Cetaceans
A total of 24 stranded or bycatch cetaceans, including Balaenoptera omurai, Lagenodelphis hosei, Kogia sima, Stenella attenuata, Grampus griseus, Neophocaena phocaenoides, and Sousa chinensis, were collected from 2001 to 2011 in Taiwan. Using the muscular delta C-13 and delta N-15 data, three ecological groups were identified as the oceanic baleen whale, the neritic, and the coastal toothed whale groups, coinciding with their taxonomy, feeding habits and geographical distribution. A horizontal inshore to offshore distribution was found for the sympatric neritic toothed dolphins, G. gtiseus, K. sima, S. attenuate, and L. hosei in the outermost offshore waters, accompanying their growth. For the first time we identify Taiwan's Chinese white dolphin, S. chinensis, as an exclusive fish eater. Cd and As bioaccumulated in the G. griseus, L hosei and S. attenuata increase as they grow. Prey-derived As- and Cd-induced health threats were found in L hosei, and G. griseus. (C) 2015 Elsevier Ltd. All rights reserved.
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