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ROUNDSCALE SPEARFISH branchiostegal morphometric data
The morphometric characteristics that separate white marlin Kajikia albidus from roundscale spearfish Tetrapturus georgii can be difficult for non-experts to distinguish, particularly when the animals are in the water. Using the measurements of the lower jaw tip to the longest branchiostegal ray (LJBR) and the opercle (LJOP), a discriminant function is presented that will help field observers separate the two species. The function DR-W LJBR (3.31861) LJOP (-2.84856) 6.37198 classified specimens as roundscale spearfish when DR-W was 0 and as white marlin when DR-W 0 with a 95 correct classification rate overall. Since only the head of a specimen needs to be closely observed, the method has particular utility for tournament anglers during the hook removal process.
Complete Metadata
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|---|---|
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"fn": "Beerkircher, Larry",
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|
| describedByType | application/octet-steam |
| description | The morphometric characteristics that separate white marlin Kajikia albidus from roundscale spearfish Tetrapturus georgii can be difficult for non-experts to distinguish, particularly when the animals are in the water. Using the measurements of the lower jaw tip to the longest branchiostegal ray (LJBR) and the opercle (LJOP), a discriminant function is presented that will help field observers separate the two species. The function DR-W LJBR (3.31861) LJOP (-2.84856) 6.37198 classified specimens as roundscale spearfish when DR-W was 0 and as white marlin when DR-W 0 with a 95 correct classification rate overall. Since only the head of a specimen needs to be closely observed, the method has particular utility for tournament anglers during the hook removal process. |
| distribution |
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|
| identifier | gov.noaa.nmfs.inport:30416 |
| keyword |
[
"fishdep",
"fishery-dependent",
"DOC/NOAA/NMFS/SEFSC > Southeast Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce",
"Roundscale Spearfish Head Morphology"
]
|
| landingPage | https://www.fisheries.noaa.gov/inport/item/30416 |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2024-02-29T00:00:00.000+00:00 |
| publisher |
{
"name": "Southeast Fisheries Science Center",
"@type": "org:Organization"
}
|
| references |
[
"https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/sefsc/dmp/pdf/30416.pdf"
]
|
| rights | otherRestrictions, unclassified |
| spatial | -44.0,7.0,-95.0,46.0 |
| temporal | 2008-01-01T00:00:00+00:00/2009-01-01T00:00:00+00:00 |
| title | ROUNDSCALE SPEARFISH branchiostegal morphometric data |
