Beak length analysis of Moroteuthis ingens (Cephalopoda: Onychoteuthidae) from the Falkland Islands region of the Patagonian shelf

Jackson, George D and Buxton, Nicole G and George, Magnus John Alexander (1997) Beak length analysis of Moroteuthis ingens (Cephalopoda: Onychoteuthidae) from the Falkland Islands region of the Patagonian shelf. Journal of the Marine Biological Association of the United Kingdom, 77 (4). pp. 1235-1238. ISSN 0025-3154

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Abstract

A detailed analysis of beak length to body length and weight measurements was carried out for the onychoteuthid squid Moroteuthis ingens, in the Falkland Islands region of the South Atlantic. Lower and upper rostral lengths were both good predictors of mantle length and body weight. In addition, the relationships of freshly dissected beaks to mantle length and body weight were significantly different to those of beaks dried before measuring, with dried beaks being better predictors of both variables. A considerable amount of information on Southern Ocean squid biology has been obtained from analysis of beaks in the stomach contents of predators (Clarke, 1980,1983). Beak analysis can be particularly useful as it provides information on the species preyed upon as well as estimates of squid size and biomass ingested.

Item Type:
Journal Article
Journal or Publication Title:
Journal of the Marine Biological Association of the United Kingdom
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1100/1104
Subjects:
ID Code:
146362
Deposited By:
Deposited On:
10 Aug 2020 14:05
Refereed?:
Yes
Published?:
Published
Last Modified:
10 Aug 2020 14:05