UC Davis UC Davis Previously Published Works Title Temporal variation in cannibalistic infanticide by the shore crab Hemigrapsus oregonensis: Implications for reproductive success Permalink https://escholarship.org/uc/item/3fk7x0hq Journal Marine Ecology, 36(3) ISSN 0173-9565 Authors Miller, SH Morgan, SG Publication Date 2015 DOI 10.1111/maec.12172 Peer reviewed eScholarship.org Powered by the California Digital Library University of California Marine Ecology. ISSN 0173-9565 SHORT COMMUNICATION Temporal variation in cannibalistic infanticide by the shore crab Hemigrapsus oregonensis: implications for reproductive success Seth H. Miller1 & Steven G. Morgan1,2 1 Bodega Marine Laboratory, University of California Davis, Bodega Bay, CA, USA 2 Department of Environmental Science and Policy, University of California, Davis, CA, USA Keywords Abstract Feeding behavior; Hemigrapsus oregonensis; larval release; reproductive output; resource Larvae of benthic marine organisms are released amid high densities of suspen- limitation. sion feeding and predatory adults and are highly subject to being consumed, even by conspecifics or their own parent. During laboratory feeding trials con- Correspondence ducted in June 2006, female shore crabs (Hemigrapsus oregonensis) from Stege Seth H. Miller, Bodega Marine Laboratory Marsh in San Francisco Bay (37°54.5300 N, 122°19.7340 W) that released their University of California Davis, 2099 Westside larvae during the previous 24 h ate fewer conspecific larvae than females that Road, Bodega Bay, CA 94923, USA. had not recently released larvae, though the behavior was not repeated during E-mail:
[email protected] similar trials in 2007. Additionally, the number of larvae eaten increased with Accepted: 15 March 2014 increasing starvation time, and hungrier females showed a trend toward eating more larvae from a different species (Carcinus maenas) than larvae of conspe- doi: 10.1111/maec.12172 cifics.