The British Herpetological Society

The Herpetological Journal is the Society's prestigious quarterly scientific journal. Articles are listed in Biological Abstracts, Current Awareness in Biological Sciences,Current Contents, Science Citation Index, and Zoological Record.

The 2017/18  impact factor of The Herpetological Journal is 1.268

ISSN 0268-0130


pdf 03. Do big dads make big babies? Paternal effects on larval performance in red-eyed treefrogs of Belize (Agalychnis callidryas, A. moreletti)

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pp. 131-138
Authors: Briggs, Venetia S.

Abstract: Under the good genes model of sexual selection, females prefer males with attributes that signify high genetic quality to improve offspring fitness. This study tested the hypothesis that female mating preferences result in enhanced offspring performance, owing to genetic variation among sires in two species of red-eyed treefrogs (Agalychnis callidryas and A. moreletii). The study provides evidence for paternal size effects on offspring traits, most notably on hatchling size, larval duration and size at metamorphosis. Large males of both species produced larger hatchlings relative to half-sibs. Larger hatchlings may have immediate growth and survival advantages that propel them through the larval period and suggests the potential for increased post-metamorphic fitness benefits. Large males of A. callidryas sired larger froglets and there were positive correlations between sire size and froglet traits for both species. Tadpoles of both species that remained in a longer larval period emerged from metamorphosis at a greater size. The two species share similar life history traits, but considerable inter-specific differences of paternal effects between A. callidryas and A. moreletii may help to explain the variation in breeding behaviour and tadpole biology within these two species. In this system, females may exercise directional selection for offspring at a larger metamorphic body size that will increase her fitness through enhanced survival and reproductive success.

Keywords: GOOD GENES, A. MORELETII, FEMALE CHOICE, AGALYCHNIS CALLIDRYAS, SEXUAL SELECTION, TADPOLE TRAITS

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IMPORTANT NOTE - JUNE 2020

Please note that as from Volume 31 Number 1 (January 2021) on, the Herpetological Journal will be available as an online publication only - the last print edition will be Volume 30 Number 4.   

Aligning with this change, it is now no longer possible to purchase a subscription that includes a print copy of the HJ.  All members who have existing HJ print subscriptions that remain active as at end June 2020 will receive the full four 2020 print editions.  New subscribers or renewals after this time will only have option to subscribe to the online only subscription package.  Subscription pricing has been amended to reflect the content changes.