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A note on gametogenesis in the oyster drills, Urosalpinx cinerea (Say) and Eupleura caudata (Say)
Manzi, J.J.; Calabrese, A., Anthony; Rawlins, D.M. (1972). A note on gametogenesis in the oyster drills, Urosalpinx cinerea (Say) and Eupleura caudata (Say). Veliger 14(3): 271-273
In: The Veliger. California Malacozoological Society: Berkeley, CA,. ISSN 0042-3211, more
Peer reviewed article  

Available in Authors 

Keywords
    Eupleura caudata (Say, 1822) [WoRMS]; Urosalpinx cinerea (Say, 1822) [WoRMS]; Marine

Authors  Top 
  • Manzi, J.J.
  • Calabrese, A.
  • Rawlins, D.M.

Abstract
    (1) Spermatogenesis in U. cinerea and E. caudata appeared to be a continuous process with no seasonally progressive stages and no clearly defined inactive period. (2) Oogenesis in both spp also indicated continuous gonadal activity with no clearly defined inactive stage. (3) Males and females of both spp revealed a marked periodicity in the amounts of viable gametes available. These amounts increased in late spring and early summer and decreased in the fall coincidental with the natural spawning period.

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