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Anomalies in Sepiolinae Hectocotylization

Published online by Cambridge University Press:  11 May 2009

Patrizia Jereb ,
Mirella Di Stefano  and
Antonio Mazzola
Patrizia Jereb
Affiliation:
Istituto di Tecnologia della Pesca e del Pescato, Via L. Vaccara 61, 91026 Mazara del Vallo, Italy.
Mirella Di Stefano
Affiliation:
Istituto di Tecnologia della Pesca e del Pescato, Via L. Vaccara 61, 91026 Mazara del Vallo, Italy.
Antonio Mazzola
Affiliation:
Istituto di Zoologia, Universita di Palermo, Via Archirafi 18, 90123 Palermo, Italy
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Extract

Four cases of anomalies of the copulatory arm in Sepiolinae (Cephalopoda: Sepiolidae) are reported. In one case (Sepietta oweniana), both dorsal arms were modified resulting in double hecocotylization. In another specimen probably of the same species the copula-tory apparatus was formed by two fleshy multilobed formations situated on the dorsal and ventral side of the arm base. In one specimen of Rondeletiola minor the copulatory apparatus was inversely positioned on the arm base, and in one Sepioh intermedia specimen the inner free portion of the wrinkled tubercle was markedly enlarged.

Type
Short Communications
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 77 , Issue 4 , November 1997 , pp. 1239 - 1242
Copyright
Copyright © Marine Biological Association of the United Kingdom 1997

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