02379nas a2200301   4500008004100000245018900041210006900230300001300299490000700312520136600319653001301685653001001698653001301708653001801721653001101739653001401750653002201764653001801786653001501804653001601819653001001835653002301845653002501868653001001893100002801903700001701931856012901948       2005                        eng d00aReproductive cycle of the carpet shell clam <i>Ruditapes decussatus </i>(Linnaeus 1758) in Araxos lagoon (NW Peloponnisos, Greece) and in Evinos estuary (South Aitoloakarnania, Greece)0 aReproductive cycle of the carpet shell clam iRuditapes decussatu  a999-10050 v143 aThe reproductive cycle of two natural populations of the carpet-shell clam Ruditapes decussatus, in Araxos lagoon and in Evinos estuary, were determined by monthly examination of gonads from November 2000 to October 2001. The histological examination showed that in Araxos lagoon individuals were in the inactive stage from November to January, when gonadal development first took place. Ripe individuals appeared in April and the spawning activity begun in June and continued increasingly until October. The redevelopmental stage lasted from July to September and the duration of the completely spawned stage was from June to October. In Evinos estuary, the inactive stage took place from November to June. In some individuals gonadal development began in January and ripe individuals appeared in May. The spawning stage lasted from July to October, the redevelopmental stage appeared only in August and the completely spawned stage took place from August to September. The clams did not show any sign of hermaphroditism. The percentage of females was 57.5% in Araxos lagoon and 60% in Evinos estuary. The clams in Araxos lagoon had a more intense spawning activity, while clams in Evinos estuary stayed significantly longer in the inactive stage. The condition index presented a higher mean value and lower variability in Araxos lagoon than in Evinos estuary.10abivalves10acoast10aexposure10agametogenesis10agrowth10ahistology10aMollusca Bivalvia10aphilippinarum10apopulation10arecruitment10areeve10areproductive cycle10aruditapes decussatus10aspain1 aChryssanthakopoulou, V.1 aKaspiris, P.  uhttps://icgf.myspecies.info/content/reproductive-cycle-carpet-shell-clam-ruditapes-decussatus-linnaeus-1758-araxos-lagoon-nw