Observed heterospecific clutch size can affect offspring investment decisions
نویسندگان
چکیده
منابع مشابه
Observed heterospecific clutch size can affect offspring investment decisions.
Optimal investment in offspring is important in maximizing lifetime reproductive success. Yet, very little is known how animals gather and integrate information about environmental factors to fine tune investment. Observing the decisions and success of other individuals, particularly when those individuals initiate breeding earlier, may provide a way for animals to quickly arrive at better bree...
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The Smith-Fretwell model for optimal offspring size assumes the existence of an inverse proportional relationship (i.e., trade-off) between the number of offspring and the amount of resources invested in an individual offspring; virtually all of the many models derived from theirs make the same trade-off assumption. Over the last 30 years it has become apparent that the predicted proportionalit...
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Existing models show that herding in decisions can cause significant information loss, inferior information aggregation and impaired decision making. However, we show that in a multi-stage decision setting with endogenous information production, herding on the initial decision can actually result in superior aggregate information and improved decisions. This is because the possibility of herdin...
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Theories on the evolution of clutch size are primarily influenced by examples from terrestrial animals, yet most animal phyla occur exclusively in water. Oxygen has a lower diffusion coefficient and lower solubility in water than in air, and siblings in aquatic clutches often compete for oxygen. Mitigating this competition could affect allocation of resources to offspring. Gelatinous clutches a...
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Numerous behavioral factors have been identified as having an impact on household stockholding decisions. Given there is both theoretical and empirical evidence to support the premise that offspring gender can influence specific types of parental preferences, I model and test the theory that offspring gender has an effect on parental investment decision making. I find that having only female of...
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ژورنال
عنوان ژورنال: Biology Letters
سال: 2011
ISSN: 1744-9561,1744-957X
DOI: 10.1098/rsbl.2011.0970