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ORIGINAL PAPER Differential reproductive investment, attachment strength

Differential reproductive investment, attachment strength
and mortality of invasive and indigenous mussels across
heterogeneous environments
K. R. Nicastro G. I. Zardi C. D. McQuaid
Received: 6 March 2009 / Accepted: 13 October 2009
Springer Science+Business Media B.V. 2009
Abstract Environmental heterogeneity challenges
both indigenous species and invaders and can play a
defining role in the dynamics of their interactions. We
compare bay and open coast habitats to show how
environmental heterogeneity and seasonality affect
survival and physiological performances of invasive
(Mytilus galloprovincialis) and indigenous (Perna
perna) intertidal mussels. P. perna had significantly
higher attachment strength than M. galloprovincialis.
Attachment was strongly correlated with hydrody-
namic stress and was lower for both species in bays.
Both species had a major spawning event when wave
action was weakest. In bays, there was no correlation


Source: Alberto, Filipe - Centro de Ciencias do Mar, Universidade do Algarve


Collections: Environmental Sciences and Ecology; Biology and Medicine