REPRODUCTION AND LARVAL DEVELOPMENT OF ACMAEA TESTUDINALIS (MÜLLER)
Open Access
- 1 October 1964
- journal article
- research article
- Published by University of Chicago Press in The Biological Bulletin
- Vol. 127 (2) , 294-303
- https://doi.org/10.2307/1539227
Abstract
Larval development of the prosobranch mollusc, Acmaea testudinalis, was previously undescribed. At Noank, Connecticut, A. testudinalis spawns May to July. In the laboratory, adults (sexes separate) emitted gametes between the temperatures of 17.0[degree]C and 22.5[degree]C. Eggs were fertilized and then the larvae were reared at 12.1 [plus or minus] 0.5[degree]C. Planktonic, top-shaped trochophores, characterised by a monotrochal prototroch, apical tuft, telotroch, and cilia covered apical end formed in 10 to 13 hours. Veligers with a small circular velum and uncoiled capsule-shaped larval shell, developed in 31 to 36 hours. Feeding was begun at 60 hours; torsion occurred at 61 hours and metamorphosis began at about 15 days. Complete development from egg to newly formed adult occurred in about 6 weeks.This publication has 1 reference indexed in Scilit:
- Studies on the biology of limpets IV. The breeding of patella depress a pennant on the north Cornish coastJournal of the Marine Biological Association of the United Kingdom, 1961