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dc.contributor.authorSmith, Kathryn E.
dc.contributor.authorThatje, Sven
dc.date.accessioned2013-12-10T19:48:22Z
dc.date.available2013-12-10T19:48:22Z
dc.date.issued2013-10
dc.identifier.citationSmith, K. E., & Thatje, S. (2013). The subtle intracapsular survival of the fittest: maternal investment, sibling conflict, or environmental effects? Ecology, 94(10), 2263-2274.en_US
dc.identifier.urihttp://hdl.handle.net/11141/209
dc.description.abstractDevelopmental resource partitioning and the consequent offspring size variations are of fundamental importance for marine invertebrates, in both an ecological and evolutionary context. Typically, differences are attributed to maternal investment and the environmental factors determining this; additional variables, such as environmental factors affecting development, are rarely discussed. During intracapsular development, for example, sibling conflict has the potential to affect resource partitioning. Here, we investigate encapsulated development in the marine gastropod Buccinum undatum. We examine the effects of maternal investment and temperature on intracapsular resource partitioning in this species. Reproductive output was positively influenced by maternal investment, but additionally, temperature and sibling conflict significantly affected offspring size, number, and quality during development. Increased temperature led to reduced offspring number, and a combination of high sibling competition and asynchronous early development resulted in a common occurrence of "empty" embryos, which received no nutrition at all. The proportion of empty embryos increased with both temperature and capsule size. Additionally, a novel example of a risk in sibling conflict was observed; embryos cannibalized by others during early development ingested nurse eggs from inside the consumer, killing it in a "Trojan horse" scenario. Our results highlight the complexity surrounding offspring fitness. Encapsulation should be considered as significant in determining maternal output. Considering predicted increases in ocean temperatures, this may impact offspring quality and consequently species distribution and abundance.en_US
dc.language.isoen_USen_US
dc.rightsThis published article is available in accordance with the publisher's policy. It may be subject to U.S. copyright law.en_US
dc.rights.urihttp://www.esapubs.org/esapubs/permissions.htmen_US
dc.titleThe subtle intracapsular survival of the fittest: maternal investment, sibling conflict, or environmental effects?en_US
dc.typeArticleen_US
dc.identifier.doi10.1890/12-1701.1


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