DWARF SPERM WHALE (Kogia simus): Western North Atlantic Stock
The dwarf sperm whale (Kogia simus) appears to be distributed worldwide in temperate to tropical waters (Caldwell and Caldwell 1989). There are no stranding records for the east Canadian coast (Willis and Baird 1998). Sightings of these animals in the western North Atlantic occur primarily along the...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.294.7551 2023-05-15T17:31:07+02:00 DWARF SPERM WHALE (Kogia simus): Western North Atlantic Stock Stock Definition Geographic Range The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.294.7551 http://www.nmfs.noaa.gov/pr/pdfs/sars/ao2002whds-wn.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.294.7551 http://www.nmfs.noaa.gov/pr/pdfs/sars/ao2002whds-wn.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.nmfs.noaa.gov/pr/pdfs/sars/ao2002whds-wn.pdf text ftciteseerx 2016-01-07T21:44:18Z The dwarf sperm whale (Kogia simus) appears to be distributed worldwide in temperate to tropical waters (Caldwell and Caldwell 1989). There are no stranding records for the east Canadian coast (Willis and Baird 1998). Sightings of these animals in the western North Atlantic occur primarily along the continental shelf edge and over the deeper waters off the continental shelf (Hansen et al. 1994; NMFS unpublished data). Dwarf sperm whales and pygmy sperm whales are difficult to distinguish and sightings of either species are often categorized as Kogia sp. There is no information on stock differentiation for the Atlantic population. In a recent study using hematological and stable-isotope data, Barros et al. (1998) speculated that dwarf sperm whales may have a more pelagic distribution than pygmy sperm whales, and/or dive deeper during feeding bouts. POPULATION SIZE An abundance of 115 (CV=0.61) for Kogia sp. was estimated from a line transect sighting survey conducted during July 6 to September 6, 1998 by a ship and plane that surveyed 15,900 km of track line in waters north of Maryland (38 ° N) (Figure 1; Palka et al. in review). Shipboard data were analyzed using the modified direct duplicate method (Palka 1995) that accounts for school size bias and g(0), the probability of detecting a group on the track line. Aerial data were not corrected for g(0). An abundance of 421 (CV=0.55) for Kogia sp. was estimated from a shipboard line transect sighting survey Text North Atlantic Sperm whale Unknown Barros ENVELOPE(-62.167,-62.167,-64.717,-64.717) Caldwell ENVELOPE(-101.500,-101.500,-72.083,-72.083) Willis ENVELOPE(159.450,159.450,-79.367,-79.367) |
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Open Polar |
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Unknown |
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ftciteseerx |
language |
English |
description |
The dwarf sperm whale (Kogia simus) appears to be distributed worldwide in temperate to tropical waters (Caldwell and Caldwell 1989). There are no stranding records for the east Canadian coast (Willis and Baird 1998). Sightings of these animals in the western North Atlantic occur primarily along the continental shelf edge and over the deeper waters off the continental shelf (Hansen et al. 1994; NMFS unpublished data). Dwarf sperm whales and pygmy sperm whales are difficult to distinguish and sightings of either species are often categorized as Kogia sp. There is no information on stock differentiation for the Atlantic population. In a recent study using hematological and stable-isotope data, Barros et al. (1998) speculated that dwarf sperm whales may have a more pelagic distribution than pygmy sperm whales, and/or dive deeper during feeding bouts. POPULATION SIZE An abundance of 115 (CV=0.61) for Kogia sp. was estimated from a line transect sighting survey conducted during July 6 to September 6, 1998 by a ship and plane that surveyed 15,900 km of track line in waters north of Maryland (38 ° N) (Figure 1; Palka et al. in review). Shipboard data were analyzed using the modified direct duplicate method (Palka 1995) that accounts for school size bias and g(0), the probability of detecting a group on the track line. Aerial data were not corrected for g(0). An abundance of 421 (CV=0.55) for Kogia sp. was estimated from a shipboard line transect sighting survey |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Stock Definition Geographic Range |
spellingShingle |
Stock Definition Geographic Range DWARF SPERM WHALE (Kogia simus): Western North Atlantic Stock |
author_facet |
Stock Definition Geographic Range |
author_sort |
Stock Definition |
title |
DWARF SPERM WHALE (Kogia simus): Western North Atlantic Stock |
title_short |
DWARF SPERM WHALE (Kogia simus): Western North Atlantic Stock |
title_full |
DWARF SPERM WHALE (Kogia simus): Western North Atlantic Stock |
title_fullStr |
DWARF SPERM WHALE (Kogia simus): Western North Atlantic Stock |
title_full_unstemmed |
DWARF SPERM WHALE (Kogia simus): Western North Atlantic Stock |
title_sort |
dwarf sperm whale (kogia simus): western north atlantic stock |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.294.7551 http://www.nmfs.noaa.gov/pr/pdfs/sars/ao2002whds-wn.pdf |
long_lat |
ENVELOPE(-62.167,-62.167,-64.717,-64.717) ENVELOPE(-101.500,-101.500,-72.083,-72.083) ENVELOPE(159.450,159.450,-79.367,-79.367) |
geographic |
Barros Caldwell Willis |
geographic_facet |
Barros Caldwell Willis |
genre |
North Atlantic Sperm whale |
genre_facet |
North Atlantic Sperm whale |
op_source |
http://www.nmfs.noaa.gov/pr/pdfs/sars/ao2002whds-wn.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.294.7551 http://www.nmfs.noaa.gov/pr/pdfs/sars/ao2002whds-wn.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766128439487627264 |