Acronym NA
Category
Fisheries
Title Evolution of reproductive strategies in fish Programme National Programme
Instrument (FP6)
Contact Type (FP7)
Strand (Interreg)
NA
Theme (FP7)
Activity Area (FP6)
Regional Area (Interreg)
Action (COST)
NA
Specific Programme (FP7)
NA
Funding source National Coordinator Erik Heibo Coordinator email erik.heibo@vabr.slu.se
Coordinator institution
SLU - Swedish University of Agricultural Sciences (Sweden)
Institutions involved
NA
Start year 2006 End year 2006 Funding (€) € NA Website NA Summary Among the most important life history trade-offs organisms face are those related to maternal growth and reproductive allocation (i.e. gametic investment, and egg size and number), and this will be the focus of this proposed work. Comparisons among populations and individuals within populations will be undertaken to quantify the effect of environment and individual characteristics on the expression of life history traits. Probabilistic reaction norms for age and size at maturity in relation to high and low predation risk will also be studied. Understanding how changes in one life-history trait affect others is very important. For example, if embryos from large eggs have an advantage over those from small eggs that is primarily restricted to cool environments, females with smaller eggs will have a fitness advantage in warm summers as a result of the egg size-number trade-off. Thus a reproductive strategy of smaller eggs coinciding with better growth might be a superior strategy in the face of climate change, but devastating if growth changes but not climate. A match-mismatch in reproductive strategies and climate could explain why populations do not recover after fisheries exploitation is relaxed. Results from this study can then be implemented into ecological models of population dynamics to better predict the impact from fisheries on natural populations and so manage them sustainably.
Keywords
Fish biology;
Fish;
Fish reproduction;
Marine Region
76
Not associated to marine areas
0
Marine Region Map
