Spatial variation in egg size and egg number reflects trade-offs and bet-hedging in a freshwater fish
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چکیده
منابع مشابه
Bet-hedging as an evolutionary game: the trade-off between egg size and number
Bet-hedging theory addresses how individuals should optimize fitness in varying and unpredictable environments by sacrificing mean fitness to decrease variation in fitness. So far, three main bet-hedging strategies have been described: conservative bet-hedging (play it safe), diversified bet-hedging (don’t put all eggs in one basket) and adaptive coin flipping (choose a strategy at random from ...
متن کاملBet-hedging as an evolutionary game: the trade-off between egg size and number.
Bet-hedging theory addresses how individuals should optimize fitness in varying and unpredictable environments by sacrificing mean fitness to decrease variation in fitness. So far, three main bet-hedging strategies have been described: conservative bet-hedging (play it safe), diversified bet-hedging (don't put all eggs in one basket) and adaptive coin flipping (choose a strategy at random from ...
متن کاملEgg size variability in trematodes: test of the bet-hedging hypothesis.
The hypothesis according to which egg size variability in hermaphroditic parasites results from bet-hedging was investigated in a comparative analysis using trematodes as a model. We hypothesized that the species reproducing mainly by self-fertilization should produce smaller eggs than those species that regularly practice cross-fertilization. Indeed, because self-fertilization is usually assoc...
متن کاملSpatial variation in egg size of a top predator : Interplay of body size and environmental factors ?
It is expected that nearby populations are constrained by the same ecological features shaping in turn similarity in their ecological traits. Here, we studied the spatio-temporal variability in egg size among local populations of the critically endangered Balearic shearwater Puffinus mauretanicus, a top marine predator endemic to the western Mediterranean region. Specifically we assessed whethe...
متن کاملLife history evolution in cichlids 2: directional evolution of the trade-off between egg number and egg size.
The negative relationship between offspring number and offspring size provides a classic example of the role of trade-offs in life history theory. However, the evolutionary transitions in egg size and clutch size that have produced this negative relationship are still largely unknown. Since body size may affect both of these traits, it would be helpful to understand how evolutionary changes in ...
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ژورنال
عنوان ژورنال: Journal of Animal Ecology
سال: 2012
ISSN: 0021-8790
DOI: 10.1111/j.1365-2656.2012.01961.x