Effects of adult infauna on new recruits: implications for the role of biogenic refuges☆

摘要: Abstract Abundances of many macrofaunal species are enhanced around biogenic structures, yet some show a reduced survival such structures. High densities macrofauna occur the tubes Diopatra cuprea (Bosc), but successful recruitment bivalve Mulinia lateralis (Say) is inhibited by high post-settlement mortality. Laboratory experiments were conducted to test effects two polychaetes, Nereis succinea (Frey and Leuckart) Streblospio benedicti (Webster), on newly-recruited lateralis. In field these polychaetes abundant rare in same habitat when absent. Recently metamorphosed added azoic sediment cores laboratory which contained 0, 1×, 2× or 4× either Nereissuccinea benedicti. Survival treatment ranged from 29 70% control both found reduce bivalve. These results suggest that, field, indirectly modify environment altering local fauna then inhibit taxa.