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dc.contributor.authorAndriolo, Arturpt_BR
dc.contributor.authorRocha, Jesuina Maria dapt_BR
dc.contributor.authorZerbini, Alexandre N.pt_BR
dc.contributor.authorLopes, Paulo C. Simõespt_BR
dc.contributor.authorMoreno, Ignacio Maria Benitespt_BR
dc.contributor.authorLucena, Alineidept_BR
dc.contributor.authorDanilewicz, Danielpt_BR
dc.contributor.authorBassoi, Manuelapt_BR
dc.date.accessioned2014-12-23T02:13:45Zpt_BR
dc.date.issued2010pt_BR
dc.identifier.issn1984-4670pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/108576pt_BR
dc.description.abstractShip-based sighting surveys for cetaceans were conducted in the former whaling ground off the northeastern coast of Brazil. The cruises took place in winter and spring of 1998-2001 with the objectives of investigating current distribution and abundance of cetaceans, particularly large whale species taken during whaling. In 1998 the survey were conducted between the parallels 5°30’W and 9°S and the 200 m isobath and the meridian 033°W. A total of about 3,100 nm were surveyed between 1998 and 2001 Surveys were conducted using line transect methods from about 5- 10°S, and from the coast to 33°W. A total of 151 sightings (203 individuals) of large whales were recorded on effort. The Antarctic minke whale – Balaenoptera bonaerensis (Burmeister, 1867) was the most frequently sighted species (97 groups/ 132 individuals; Sighting Rate [SR] = 0.031 groups/nm), being recorded only in offshore waters. Density gradually increased from August to October. Minke whales were distributed throughout the area, both to the north and the south of former whaling ground. Sighting data indicate this is the most abundant species, particularly in the area beyond the continental shelf break. Breeding behavior was observed for Antarctic minke whales, but few groups containing calves were recorded (4.3% of the groups sighted on effort). Three other large whale species were recorded in low numbers: the Bryde’s whale – Balaenoptera edeni (Anderson, 1879)1, the sei whale, B. borealis (Lesson, 1828), and the sperm, Physeter macrocephalus (Linnaeus, 1758). Sei, Bryde and sperm whales were regularly caught during whaling operations, but are rare in the area, suggesting they were depleted by whaling and have yet to recover to their pre-explotation abundance. In contrast, minke whales are abundant in this area, suggesting that either they were not substantially depleted, or that they have recovered rapidly. Blue whale, Balaenoptera musculus (Linnaeus, 1758), and fin whale, B. physalus (Linnaeus, 1758), not recorded on our surveys, have always been extremely rare in the area.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofZoologia. Curitiba. Vol. 27, n. 5 (out. 2010), p. 741-750pt_BR
dc.rightsOpen Accessen
dc.subjectBaleia de Brydept_BR
dc.subjectBryde’s whaleen
dc.subjectBaleia minkept_BR
dc.subjectMinke whaleen
dc.subjectSei whaleen
dc.subjectCachalotept_BR
dc.subjectAtlântico Sul, Oceanopt_BR
dc.subjectSperm whaleen
dc.subjectSouth atlanticen
dc.titleDistribution and relative abundance of large whales in a former whaling ground off eastern South Americapt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000792748pt_BR
dc.type.originNacionalpt_BR


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