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
| describedByType | application/octet-steam |
|---|---|
| identifier | gov.noaa.nmfs.inport:30416 |
| landingPage | https://www.fisheries.noaa.gov/inport/item/30416 |
| language | [] |
| 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 |
