PYGMY SPERM WHALE (Kogia breviceps): Western North Atlantic Stock
The pygmy sperm whale (Kogia breviceps) appears to be distributed worldwide in temperate to tropical waters (Caldwell and Caldwell 1989). Sightings of these animals in the western North Atlantic occur in oceanic waters ( Mullin and Fulling 2003; SEFSC unpublished data). Pygmy sperm whales and dwarf...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.298.8597 2023-05-15T17:31:05+02:00 PYGMY SPERM WHALE (Kogia breviceps): Western North Atlantic Stock Stock Definition Geographic Range The Pennsylvania State University CiteSeerX Archives 2005 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.298.8597 http://www.nefsc.noaa.gov/nefsc/publications/tm/tm194/pdfs/50.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.298.8597 http://www.nefsc.noaa.gov/nefsc/publications/tm/tm194/pdfs/50.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.nefsc.noaa.gov/nefsc/publications/tm/tm194/pdfs/50.pdf text 2005 ftciteseerx 2016-01-07T21:54:52Z The pygmy sperm whale (Kogia breviceps) appears to be distributed worldwide in temperate to tropical waters (Caldwell and Caldwell 1989). Sightings of these animals in the western North Atlantic occur in oceanic waters ( Mullin and Fulling 2003; SEFSC unpublished data). Pygmy sperm whales and dwarf sperm whales (K. sima) are difficult to differentiate at sea (Caldwell and Caldwell 1989, Wursig et al. 2000), and sightings of either species are often categorized as Kogia sp. There is no information on stock differentiation for the Atlantic population. Duffield et al. (2003) propose using the molecular weights of myoglobin and hemoglobin, as determined by blood or muscle tissues of stranded animals, as a quick and robust way to provide species confirmation. Using hematological as well as 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. Diagnostic morphological characters have also been useful in distinguishing the two Kogia species (Barros and Duffield 2003), thus enabling researchers to use stranding data in distributional and ecological studies. Specifically, the distance from the snout to the center of the blowhole in proportion to the animal’s total length, as well as the height of the dorsal fin, in proportion to the animal’s total length, can be used to differentiate between the two Kogia species when such measurements are obtainable (Barros and Duffield 2003). POPULATION SIZE Total numbers of pygmy sperm whales off the 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) |
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Unknown |
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ftciteseerx |
language |
English |
description |
The pygmy sperm whale (Kogia breviceps) appears to be distributed worldwide in temperate to tropical waters (Caldwell and Caldwell 1989). Sightings of these animals in the western North Atlantic occur in oceanic waters ( Mullin and Fulling 2003; SEFSC unpublished data). Pygmy sperm whales and dwarf sperm whales (K. sima) are difficult to differentiate at sea (Caldwell and Caldwell 1989, Wursig et al. 2000), and sightings of either species are often categorized as Kogia sp. There is no information on stock differentiation for the Atlantic population. Duffield et al. (2003) propose using the molecular weights of myoglobin and hemoglobin, as determined by blood or muscle tissues of stranded animals, as a quick and robust way to provide species confirmation. Using hematological as well as 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. Diagnostic morphological characters have also been useful in distinguishing the two Kogia species (Barros and Duffield 2003), thus enabling researchers to use stranding data in distributional and ecological studies. Specifically, the distance from the snout to the center of the blowhole in proportion to the animal’s total length, as well as the height of the dorsal fin, in proportion to the animal’s total length, can be used to differentiate between the two Kogia species when such measurements are obtainable (Barros and Duffield 2003). POPULATION SIZE Total numbers of pygmy sperm whales off the |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Stock Definition Geographic Range |
spellingShingle |
Stock Definition Geographic Range PYGMY SPERM WHALE (Kogia breviceps): Western North Atlantic Stock |
author_facet |
Stock Definition Geographic Range |
author_sort |
Stock Definition |
title |
PYGMY SPERM WHALE (Kogia breviceps): Western North Atlantic Stock |
title_short |
PYGMY SPERM WHALE (Kogia breviceps): Western North Atlantic Stock |
title_full |
PYGMY SPERM WHALE (Kogia breviceps): Western North Atlantic Stock |
title_fullStr |
PYGMY SPERM WHALE (Kogia breviceps): Western North Atlantic Stock |
title_full_unstemmed |
PYGMY SPERM WHALE (Kogia breviceps): Western North Atlantic Stock |
title_sort |
pygmy sperm whale (kogia breviceps): western north atlantic stock |
publishDate |
2005 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.298.8597 http://www.nefsc.noaa.gov/nefsc/publications/tm/tm194/pdfs/50.pdf |
long_lat |
ENVELOPE(-62.167,-62.167,-64.717,-64.717) ENVELOPE(-101.500,-101.500,-72.083,-72.083) |
geographic |
Barros Caldwell |
geographic_facet |
Barros Caldwell |
genre |
North Atlantic Sperm whale |
genre_facet |
North Atlantic Sperm whale |
op_source |
http://www.nefsc.noaa.gov/nefsc/publications/tm/tm194/pdfs/50.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.298.8597 http://www.nefsc.noaa.gov/nefsc/publications/tm/tm194/pdfs/50.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766128402439340032 |