TY - JOUR
AU - , VAN DER HORST, G.
AB - Abstract The breeding cycles of two species of sandy beach whelk (Bullia digitalis and B. pura) are presented and compared with a third species (B. rhodostoma). In all three species, egg maturation and copulation occur in spring while summer marks the deposition and spawning of egg capsules. B. digitalis and B. pura migrate offshore to lay their eggs, the juveniles of both species restricting themselves to beyond the breaker zone. Newly hatched snails of B. rhodostoma appear in the intertidal towards late summer. The discovery of a penis-like structure on females of B. rhodostoma is investigated. The pseudopenis was also found on B. pura but never on B. digitalis. The possibility of a sex-change was eliminated on the histological investigation of the gonads of a range of snails and the examination of sex-ratios over a period of five months. General trends in reproductive behaviour are also discussed. This content is only available as a PDF. © The Malacological Society of London
TI - PATTERNS OF REPRODUCTION IN THREE SANDY BEACH WHELKS OF THE GENUS BULLIA GRIFFITH
JF - Journal of Molluscan Studies
DO - 10.1093/oxfordjournals.mollus.a065900
DA - 1985-10-01
UR - https://www.deepdyve.com/lp/oxford-university-press/patterns-of-reproduction-in-three-sandy-beach-whelks-of-the-genus-M9VuQPllWF
SP - 190
VL - 51
IS - 2
DP - DeepDyve
ER -