Show simple item record Steele, Mark A. en Forrester, Graham E. en Almany, Glenn R. en 2018-04-13T21:37:17Z 2018-04-13T21:37:17Z 1998 en
dc.identifier.citation Marine Ecology Progress Series 172, 115-125. (1998) en
dc.identifier.issn 0171-8630 en
dc.identifier.uri en
dc.description.abstract An active debate has focused on whether patterns in the abundance of reef fishes are primarily determined by the supply of larvae or by subsequent interactions occurring on the reef. By manipulating the presence of predators and the density of older conspecifics on small standardized reefs, we tested the influences of these 2 factors--and interactions between them--on recruitment of reef fishes. To assess the generality of our findings, we conducted similar experiments on 2 closely related species in 2 different systems: 1 tropical and 1 temperate. At Santa Catalina Island (a temperate site in southern California, USA) we worked with the blackeye goby Coryphopterus nicholsii and at Lee Stocking Island (a tropical site in the Bahamas) we studied the bridled goby Coryphopterus glaucofraenum. Predators reduced recruitment of blackeye gobies, but in contrast, in one experiment, recruitment of bridled gobies was positively affected by 1 class of predators (reef residents) and unaffected by transient predators. In another experiment, recruitment of bridled gobies was unaffected by either class of predators; however, there was little statistical power to detect a similar positive effect of predators. Older conspecifics (adults and subadults) did not significantly influence recruitment of blackeye gobies, but recruitment of bridled gobies was negatively related to density of adult conspecifics. For both species, the presence of predators did not influence the relationship between recruitment and the density of older conspecifics. Our results suggest that patterns of abundance among local populations of reef fishes can be decoupled from patterns of larval supply by reef-based biotic processes (namely predation and intraspecific interactions). However, the influences of older conspecifics and predators varied widely between the 2 quite similar species that we studied. This underscores the need to understand the specific reasons for such differences in order to make predictions regarding the relative importance of these processes in novel circumstances. en
dc.format.extent 11 Pages en
dc.language.iso en en
dc.publisher Marine Ecology Progress Series en
dc.relation.uri en
dc.rights copyright Inter-Research 1998 en
dc.subject Reef fishes en
dc.subject Recruitment en
dc.subject Predation en
dc.subject Density dependence en
dc.subject Gobies en
dc.title Influences of predators and conspecifics on recruitment of a tropical and a temperate reef fish en
dc.type Article en

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  • Steele, Mark [34]
    Collection of scholarship submitted by Dr. Mark Steele, Department of Biology
  • Faculty Publications [3628]
    Collection of scholarship submitted by CSUN faculty

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