Hatching asynchrony as a bet-hedging strategy-an offspring diversity hypothesis

Article Abstract:

A proposal that suggests that the hatching asynchrony could be used as an adaptive parental strategy for producing phenotype variations in the offspring through asymmetric sibling competition is presented. This method could help in avoiding the inflation of within-brood variances in offspring traits, which could be caused due to genetic effects and reduce the distortions of sex ratio or laying-order related variations.

Behavior, Birds

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Are high Arctic terrestrial food chains really that simple? - The Bear Island food web revisited

Article Abstract:

Summerhayes and Elton's nitrogen cycle diagram for Bear Island is widely used for illustrating the organization of high Arctic food webs. A revision of the terrestrial section of this food web is presented and a much greater level of complexity than that suggested by Summerhayes and Elton is found and the implications for the ecological theory are discussed.

Food chains (Ecology), Food chains

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Linking life history traits in successive phases of a complex life cycle: effects of larval biomass on early juvenile development in an estuarine crab, Chasmagnathus granulata

Article Abstract:

A model of interrelationships between the life-history and physiological traits of Chasmagnathus granulata, which enables the linking of embryonic, larval and juvenile development with each other, is developed. Results indicate the existence of the different kinds of interdependencies between life history and physiological traits within a complex life cycle.

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