The Whales and Dolphins of Washington State with a Key to the Cetaceans of the West Coast of North America

Scheffer, Victor B.; Slipp, John W.

doi:10.2307/2421587

Cited by 91 publications

(74 citation statements)

References 0 publications

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“…The internal injuries also seemed consistent not only with the Eskimo lore but with reports by Scheffer and Slipp (1948), Norris and Prescott (1961), and Rice (1968) that use of the blunt snout as a battering ram for killing or disabling other marine animals is part of the repertoire of aggressive behaviors of the killer whale.…”

Section: Aningayou Personal Communication)supporting

confidence: 86%

Ecology and Biology of the Pacific Walrus,Odobenus rosmarus divergensIlliger

Fay¹

1982

North American Fauna

394

567

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Section: Aningayou Personal Communication)supporting

confidence: 86%

Ecology and Biology of the Pacific Walrus,Odobenus rosmarus divergensIlliger

Fay¹

1982

North American Fauna

394

567

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“…comm., 1991). There are a number of reports of trawls bringing up dead and decomposed bodies of cetaceans (Scheffer and Slipp, 1948;Testaverde, 1978;Perez and Loughlin, 1991), as well as skulls (Anonymous, 1979;Smith et al, 1989;Lake, MS 1995). Some workers contend that healthy cetaceans should be able to avoid trawl nets easily, since the vessels' forward progress is quite slow (van Utrecht, 1978;Niazi, 1990;T.…”

Section: Cetacean Catch and Compositionmentioning

confidence: 99%

Cetacean Interactions with Trawls: A Preliminary Review

Fertl¹,

Leatherwood²

1997

J. Northw. Atl. Fish. Sci.

142

155

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Cetaceans interact with trawls to an undetermined extent. A preliminary review of global data indicates that individuals of 25 cetacean species (two mysticete, 23 odontocete) have been documented to have died in working trawls or discarded trawling gear. Cetacean interactions with trawls are complex, in part because both fishermen and cetaceans are drawn to areas of high prey density. Furthermore, within such areas, cetaceans are probably often attracted to trawling activities because they make it easier for the animals to exploit a concentrated food source. Individuals of 15 (possibly 16) cetacean species (13 odontocete, and one or even two mysticete) have been reported to feed in association with trawls. Animals follow working nets (feeding on stirred-up organisms or fish gilled in mesh) and also feed on discarded by-catch. Damage to gear as a result of feeding interactions or entanglement has been reported. Such damage results in (1) harm to the animals, (2) creation of negative opinions of cetaceans by fishermen (regardless of whether a cetacean or a shark is, in fact, responsible for the damage in question), and (3) loss of time and money for repair and replacement of gear. The relationships of cetaceans with trawls need to be further studied to determine what effects the trawl fisheries have on the ecology and population status of the whales and dolphins involved.

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“…Our finding that the stomach of the Pygmy Sperm Whale from Carlton Beach contained primarily mesopelagic cephalopod species is broadly consistent with the New Zealand study (Beatson 2007), and other studies on Pygmy Sperm Whale diet from throughout their range, such as waters surrounding the Azores (Martins et al 1985), Brazil (Secchi et al 1994, Santos & Haimovici 2001, 2002, the Canary Islands (Hernandez-Garcia & Martin 1996, Fernandez et al 2009), the Caribbean (Cardona-Maldonado & Mignucci-Giannoni 1999), South Africa (Ross 1979, Klages et al 1989, Sekiguchi et al 1992, Plön et al 1999, the Atlantic coasts of the United States and Canada (Raun et al 1970, Candela 1987, McAlpine et al 1997, Santos et al 2006, the Pacific coasts of the United States and Mexico (Scheffer and Slipp 1948, Eliason & Houck 1986, Vidal et al 1987, the Hawaiian Archipelago (West et al 2009), and Taiwan (Wang et al 2002).…”

Section: Fig 2 -(A) % Numerical Abundance (%Num) and (B) % Reconstrumentioning

confidence: 99%