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Reproductive biology of the lentil bobtail squid, Rondeletiola minor (Cephalopoda: Sepiolidae) from the eastern Mediterranean

Published online by Cambridge University Press:  06 February 2012

Bahadir Önsoy ,
Beytullah Ceylan  and
Alp Salman
Bahadir Önsoy*
Affiliation:
Muğla University, Fisheries Faculty, 48000, Muğla, Turkey
Beytullah Ceylan
Affiliation:
Muğla University, Fisheries Faculty, 48000, Muğla, Turkey
Alp Salman
Affiliation:
Ege University, Faculty of Fisheries, 35100, Bornova, İzmir, Turkey
*
Correspondence should be addressed to: B. Önsoy, Muğla University, Fisheries Faculty, 48000, Muğla, Turkey email: [email protected]
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Abstract

A total of 208 Rondeletiola minor were sampled from the eastern Mediterranean with the depth contours of 150, 350 and 550 m. Body sizes of 32 mature females ranged from 11.8 to 19.5 mm dorsal mantle length (ML), that of mature males were 11.1–19.1 mm ML. Potential fecundity varied between 192 and 315 eggs in maturing females, and ripe egg sizes were 1.1–3.0 mm. Ripe egg amount did not exceed 15% of the fecundity. The average number of spermatophores was 176 with two extreme individuals that had 557 and 674 spermatophores, respectively. Spawning occurs continuously with an asynchronous ovulation pattern. Mature animals were found throughout the year with a peak in gonadosomatic index in spring. The life cycle of R. minor was estimated to be 10 months with different cohorts in reproduction depending on how temperature affects the hatching.

Keywords

Rondeletiola minorCephalopodaSepiolidaereproductioneastern Mediterranean
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 93 , Issue 3 , May 2013 , pp. 851 - 854
Copyright
Copyright © Marine Biological Association of the United Kingdom 2012

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