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Length–weight relations for seven grenadier species (Actinopterygii: Gadiformes: Macrouridae) to the west of Ireland

Length–weight relations for seven grenadier species (Actinopterygii: Gadiformes: Macrouridae) to the west of Ireland

Authors :
Graham Johnston
Leonie Dransfeld
Brendan O'Hea
Jonathan White
Source :
Acta Ichthyologica et Piscatoria 43(4): 285-291
Publication Year :
2013
Publisher :
Pensoft Publishers, 2013.

Abstract

Length-weight regressions for seven grenadier species: Coryphaenoides rupestris Gunnerus, 1765, Trachyrincus murrayi Gunther, 1887, Coelorinchus caelorhincus (Risso, 1810), Nezumia aequalis (Gunther, 1878), Coryphaenoides mediterraneus (Giglioli, 1893), Coelorinchus labiatus (Kohler, 1896), and Coryphaenoides guentheri (Vaillant, 1888) are calculated from data collected on a series of deepwater surveys conducted by the Irish Marine Institute from 2006 to 2009, on the continental slope to the west and northwest of Ireland and the northern slope of the Porcupine Bank. The regression calculated for roundnose grenadier, C. rupestris, is compared with other regressions calculated for the species from different areas of its north Atlantic range. The difficulties associated with measuring many grenadier species, due to the fragility of their tails, are discussed. A recommendation is made that pre-anal fin length should be accepted as the standard.

Details

Language :
English
ISSN :
17341515 and 01371592
Database :
OpenAIRE
Journal :
Acta Ichthyologica et Piscatoria
Accession number :
edsair.doi.dedup.....b0adbb5ff13ddfb00c9747f1395c04f5
Full Text :
https://doi.org/10.3750/AIP2013.43.4.04