Differences in resource allocation to reproduction across the intertidal-subtidal gradient for two suspension-feeding marine gastropods: Crepidula fornicata and Crepipatella peruviana

Abstract

The sedentary, suspension-feeding gastropods Crepidula fornicata and Crepipatella peruviana can be found in large numbers both subtidally and intertidally. Although intertidal animals often show reduced reproductive output compared with that of subtidal animals, we know little about how the reproductive output of marine gastropods is affected by exposure to intertidal stresses. We documented reproductive characteristics for intertidal and subtidal Crepidula fornicata in Rhode Island, USA (2012, 2013), and Crepipatella peruviana from Pelluco Beach, Chile (2010-2012). Females of both species brood encapsulated embryos for at least several weeks before releasing offspring, facilitating determin..