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.

 ISSN 0268-0130

2020 Impact Factor for the Herpetological Journal is 0.862


pdf 10.Trophic segregation of anuran larvae in two temporary tropical ponds in southern Vietnam

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pp. 217-229

Authors: Anna B. Vassilieva, Artem Y. Sinev & Alexei V. Tiunov

Abstract: Trophic differentiation of tadpoles of four anuran species (Hoplobatrachus rugulosus, Microhyla fissipes, M. heymonsi,
Polypedates megacephalus) with different oral morphologies was studied in temporary ponds in a monsoon tropical forest in
southern Vietnam. All tadpole species were found to be omnivorous, including filter-feeding microhylids. Both gut contents analysis and stable isotope analysis provided enough evidence of resource partitioning among coexisting species. Gut contents analysis supported the expected partitioning of food resources by tadpoles with different oral morphologies and showed differences in the food spectra of filter-feeding and grazing species. Stable isotope analysis revealed more complex trophic niche segregation among grazers, as well as amongst filter-feeders. Tadpole species differed mainly in δ13C values, indicating a dependency on carbon sources traceable to either of aquatic or terrestrial origins. Furthermore, tadpoles with generalised grazing oral morphology (P. megacephalus) can start feeding as suspension feeders and then shift to the rasping mode. Controlled diet experiment with P. megacephalus larvae showed a diet-tissue isotopic fractionation of approximately 1.9‰ and 1.2‰ for Δ13C and Δ15N, respectively. In natural habitats, the difference in δ13C and δ15N values between body tissues and gut contents of four tadpole species averaged 2.8‰ and 1.0‰, respectively.

Keywords: Amphibia, aquatic food web, Cat Tien National Park, Microhylidae, mouthparts, Southeast Asia, stable isotopes, trophic shift

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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.