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Morphology, biology and molecular characterizations of Opisthoteuthis calypso (Cephalopoda: Octopoda) from the Sardinian Channel (central western Mediterranean)

Published online by Cambridge University Press:  09 July 2009

Danila Cuccu ,
Marco Mereu ,
Rita Cannas ,
Maria Cristina Follesa ,
Angelo Cau  and
Patrizia Jereb
Danila Cuccu*
Affiliation:
Dipartimento di Biologia Animale ed Ecologia, Università di Cagliari, Viale Poetto, 1–09126 Cagliari, Italy
Marco Mereu
Affiliation:
Dipartimento di Biologia Animale ed Ecologia, Università di Cagliari, Viale Poetto, 1–09126 Cagliari, Italy
Rita Cannas
Affiliation:
Dipartimento di Biologia Animale ed Ecologia, Università di Cagliari, Viale Poetto, 1–09126 Cagliari, Italy
Maria Cristina Follesa
Affiliation:
Dipartimento di Biologia Animale ed Ecologia, Università di Cagliari, Viale Poetto, 1–09126 Cagliari, Italy
Angelo Cau
Affiliation:
Dipartimento di Biologia Animale ed Ecologia, Università di Cagliari, Viale Poetto, 1–09126 Cagliari, Italy
Patrizia Jereb
Affiliation:
ISPRA ex-ICRAM, Via di Casalotti, 300–00166 Roma, Italy
*
Correspondence should be addressed to: D. Cuccu, Dipartimento di Biologia Animale ed Ecologia, Università di Cagliari, Viale Poetto, 1–09126 Cagliari, Italy email: [email protected]
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Abstract

Several aspects of the biology of Opisthoteuthis calypso were studied based on 38 individuals (23 males, 14 females and 1 indeterminate) retrieved from bottom trawls fished at 871 to 1420 m depth in the Sardinian Channel (central western Mediterranean). Data on full maturity of females are presented for the first time for this species. Information on the distribution, size, structure and fecundity for both sexes is provided, and the biological characteristics of the Sardinian samples are compared to those of other Mediterranean and Atlantic samples. Morphological variability and the peculiar structure of the shell and beak are reported and discussed. Molecular DNA sequences were obtained and compared with sequences available for the genus Opisthoteuthis.

Keywords

morphologybiologygeneticsOpisthoteuthis calypsoMediterranean Sea
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 89 , Issue 8 , December 2009 , pp. 1709 - 1715
Copyright
Copyright © Marine Biological Association of the United Kingdom 2009

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