Lethal Ramming of Sharks by Large Jacks (Carangidae) in the Palau Islands, Micronesia
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Diana L. McPherson; Kautchang Vince Blaiyok; W. Bruce Masse

doi:10.2984/66.3.6

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Diana L. McPherson,^* Kautchang Vince Blaiyok,¹ W. Bruce Masse^2,*

¹3Box 1043, Koror, Republic of Palau, 96940.
²4ENV-ES Environmental Stewardship Group, Los Alamos National Laboratory, Mailstop J978, Los Alamos,

^*Corresponding author (e-mail: wbmasse@gmail.com).

Abstract

We observed a Giant Trevally (Caranx ignobilis) ramming and mortally injuring a pair of adult Blacktip Reef Sharks (Carcharhinus melanopterus) in the Palau Islands of Micronesia. Such ramming behavior is known to Palauan and Marshallese fishermen for large-sized individuals of several different species of jacks (Carangidae). In addition, we interviewed knowledgeable Palauan subsistence fishermen regarding episodes of ramming that they had witnessed. Our observations suggest that ramming of sharks may be a normal aspect of jack aggressive behavior. These observations expand our knowledge of social behavior between sharks and large jacks.

Citation Download Citation

Diana L. McPherson, Kautchang Vince Blaiyok, and W. Bruce Masse "Lethal Ramming of Sharks by Large Jacks (Carangidae) in the Palau Islands, Micronesia," Pacific Science 66(3), 327-333, (1 July 2012). https://doi.org/10.2984/66.3.6

Published: 1 July 2012

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