The male reproductive system of the bobtail squid Neorossia caroli (Cephalopoda: Sepiolidae) is described in details for the first time, basing on 90 mature males caught from 500 to 1600 meters in the Sardinian waters (western Mediterranean Sea). Up to 83 spermatophores were found inside the Needham‘s Sac. Medium spermatophore length was 16.7 mm. Sperm mass, cement body and ejaculatory apparatus represented 52.4%, 29.3% and 29.7%, respectively, of the total spermatophore length. Empty spermatophores, spermatophore sheaths and spermatangia also were found in the sac and are described. Spermatangia implanted in several parts of males body (e.g. head, funnel and eyes) were recorded and their occurrence is discussed. The spermatophoric reaction was induced in the laboratory by submerging spermatophores in seawater and it is described
Male reproductive system in Neorossia caroli (Joubin, 1902) (Cephalopoda: Sepiolidae) from the Sardinian waters (western Mediterranean Sea)
MEREU, MARCO;
2009-01-01
Abstract
The male reproductive system of the bobtail squid Neorossia caroli (Cephalopoda: Sepiolidae) is described in details for the first time, basing on 90 mature males caught from 500 to 1600 meters in the Sardinian waters (western Mediterranean Sea). Up to 83 spermatophores were found inside the Needham‘s Sac. Medium spermatophore length was 16.7 mm. Sperm mass, cement body and ejaculatory apparatus represented 52.4%, 29.3% and 29.7%, respectively, of the total spermatophore length. Empty spermatophores, spermatophore sheaths and spermatangia also were found in the sac and are described. Spermatangia implanted in several parts of males body (e.g. head, funnel and eyes) were recorded and their occurrence is discussed. The spermatophoric reaction was induced in the laboratory by submerging spermatophores in seawater and it is described
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