Journal
MARINE ECOLOGY PROGRESS SERIES
Volume 468, Issue -, Pages 161-177Publisher
INTER-RESEARCH
DOI: 10.3354/meps09974
Keywords
Post-settlement predation; Recruitment; Spatial association; Predator-prey dynamics; Placopecten magellanicus; Astropecten sp.; Asterias spp.; Cancer spp.
Categories
Funding
- NOAA's Fisheries and the Environment (FATE) program
Ask authors/readers for more resources
Year-class strength of benthic invertebrates is generally determined during early life-history stages. However, the contribution of different biotic and abiotic factors to the resulting abundance and spatial distribution of recruits is poorly understood. We infer the effect of post-settlement mortality by benthic invertebrate predators on recruitment of sea scallops Placopecten magellanicus based on an 11 yr time series of survey data from the east coast of the United States. We reconstructed predator densities at different life-history stages for scallops and identified the stages when scallop recruitment dynamics are best explained by predator densities. Based on spatial associations and temporal dynamics, we found evidence that sea stars Astropecten americanus and crabs Cancer spp. are causing localized depletion of sea scallop recruits. Both predator groups appear to be affecting scallop recruitment primarily in the first year post-settlement. The spatial and temporal coherence in predator-prey fluctuations partially ex plains the most dramatic recruitment events in the past 3 decades and suggests that predation on recruits may also limit the geographic distribution of sea scallops in this region.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available