Early development of the limpet Siphonaria lessonii Blainville, 1827 in populations affected by different physical stressors

A. AVERBUJ; M. S. ZABALA; BIGATTI G; P.E. PENCHASZADEH

MARINE BIOLOGY RESEARCH

TAYLOR & FRANCIS AS

Lugar: Londres; Año: 2018 vol. 14 p. 148 - 157

1745-1000

ABSTRACTThe limpet Siphonaria lessonii is very common along Atlantic Patagonian intertidal rocky shores.We studied in detail the early intracapsular embryonic development of this limpet in twopopulations at north Patagonia, with different environmental conditions (i.e. wave exposure,wind, temperature). Early development from both populations was achieved at controlledand equal conditions (13°C). The spawn consisted of a series of enchained egg capsulesembedded in a jelly mass. The development from egg to hatching veliger took 9?11 days inembryos from both populations. The developmental process at both sites was identical,differing only in the embryos? sizes at each stage. Larger adult individuals producing largerembryos were registered in the sheltered site. The differences in sizes of adult and embryosof S. lessonii could be attributed to distinct environmental stressful conditions between sites