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Sublethal effects on reproduction in native fauna: are females more vulnerable to biological invasion?


Gribben, PE and Wright, JT, Sublethal effects on reproduction in native fauna: are females more vulnerable to biological invasion?, Oecologia, 149, (2) pp. 352-361. ISSN 0029-8549 (2006) [Refereed Article]

DOI: doi:10.1007/s00442-006-0452-x


Although invasive species are a major threat to survivorship of native species, we know little about their sublethal effects. In soft-sediment marine systems, mat-forming invasive species often have positive effects, facilitating recruitment and enhancing the diversity and abundance of native invertebrates. However, because mat-forming invasive species change the habitat in which they invade, and benthic invertebrates are sensitive to environmental disturbance, important sublethal effects on native species may exist. Using a model marine system we show that the widespread mat-forming invasive alga Caulerpa taxifolia (Vahl) C. Agardh has strong negative effects on the reproductive traits of a native bivalve Anadara trapezia (Deshayes, 1840) (e.g. timing of reproductive development and spawning, and follicle and gamete production) even though the invader has positive effects on recruitment. Moreover, gender specific responses occurred and indicated that females were more susceptible to invasion than males. Our results indicate that sublethal effects of an invasive species on reproductive traits will have severe consequences for fitness of the native species. © Springer-Verlag 2006.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Population ecology
Objective Division:Environmental Management
Objective Group:Marine systems and management
Objective Field:Control of pests, diseases and exotic species in marine environments
UTAS Author:Wright, JT (Associate Professor Jeffrey Wright)
ID Code:58310
Year Published:2006
Web of Science® Times Cited:24
Deposited By:NC Marine Conservation and Resource Sustainability
Deposited On:2009-09-25
Last Modified:2011-11-23

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