Scientia Marina, Vol 74, No 3 (2010)

An unusual finding of Sepietta oweniana (Cephalopoda: Sepiolidae) egg clutch


https://doi.org/10.3989/scimar.2010.74n3555

Danila Cuccu
Dipartimento di Biologia Animale ed Ecologia, Università di Cagliari, Italy

Marco Mereu
Dipartimento di Biologia Animale ed Ecologia, Università di Cagliari, Italy

Rita Cannas
Dipartimento di Biologia Animale ed Ecologia, Università di Cagliari, Italy

Sandro Marcias
Dipartimento di Biologia Animale ed Ecologia, Università di Cagliari, Italy

Angelo Cau
Dipartimento di Biologia Animale ed Ecologia, Università di Cagliari, Italy

Patrizia Jereb
ISPRA ex-ICRAM, Italy

Abstract


An unusual finding of Sepietta oweniana egg clutch at 544 m depth is described within an updating study of the reproductive aspects of the species in Sardinian waters. Egg species identity was determined by genetic analysis and morphological and biometrical data of the eggs, embryos and one newly hatched specimen are reported and discussed. Illustrations of the eggs, spermatophores and spermatangia by photographic material are also included. Data on bathymetric distribution and sexual maturity are reported and compared with data already available for the species in other geographical areas of distribution.

Keywords


Sepietta oweniana; egg clutch; embryos; reproduction; bathymetric data; Mediterranean Sea

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