a b s t r a c t
Nezumiaaequalis and Coelorinchusmediterraneus areabundantspeciesontheupperandlower
continentalslopes,respectively,intheMediterraneanSea.Astudyonthereproductivestrategyof
the twospecieswasconductedontheCatalanmargin(NWMediterranean).Thereproductivecycleof
both specieswasinvestigatedusingvisualanalysesofgonadsandhistologicalscreening.Theshallower
species, N. aequalis, showedcontinuousreproductionwithapeakofspawningfemalesinwinter
months.Incontrast,thedeeper-livingspecies, C. mediterraneus, showedsemi-continuousreproduction
with aregressionperiodduringthespring.Juvenilesof N. aequalis werepresentinallseasons,butmost
abundantinthespring.Onlytwojuvenilesof C. mediterraneus werefound.Bothspecieshad
asynchronousoocytedevelopment.Theaveragefecundityof N. aequalis was 10,630oocytesper
individual,lowerthanknownforthesamespeciesintheAtlanticOcean.Thefecundityof
C. mediterraneus was measuredforthefirsttimeinthisstudy,withanaverageof7693oocytesper
individual.Malesofbothspeciesappeartohavesemi-cysticspermatogenesis.
& 2013ElsevierLtd.Allrightsreserved
แบบ b s t r c tAreabundantspeciesontheupperandlower Nezumiaaequalis และ Coelorinchusmediterraneuscontinentalslopes,respectively,intheMediterraneanSea.AstudyonthereproductivestrategyoftwospecieswasconductedontheCatalanmargin(NWMediterranean) Thereproductivecycleofspecieswasinvestigatedusingvisualanalysesofgonadsandhistologicalscreening ทั้งนั้น Theshallowerสปีชีส์ aequalis ตอนเหนือ showedcontinuousreproductionwithapeakofspawningfemalesinwinterเดือน Incontrast, thedeeper livingspecies, C. mediterraneus, showedsemi-continuousreproductionกับ aregressionperiodduringthespring Juvenilesof N. aequalis werepresentinallseasons, butmostabundantinthespring Onlytwojuvenilesof C. mediterraneus werefound Bothspecieshadasynchronousoocytedevelopment Theaveragefecundityof N. aequalis ได้ 10, 630oocytesperindividual,lowerthanknownforthesamespeciesintheAtlanticOcean.ThefecundityofC. mediterraneus เป็น measuredforthefirsttimeinthisstudy, withanaverageof7693oocytesperแต่ละ Malesofbothspeciesappeartohavesemi-cysticspermatogenesisและ 2013ElsevierLtd.Allrightsreserved
การแปล กรุณารอสักครู่..
