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New record and dietary ecology of an endangered amphibian species, Micryletta nigromaculata Poyarkov, Nguyen, Duong, Gorin & Yang, 2018, from Vietnam.

Authors :
ANH VAN PHAM
TRUONG QUANG NGUYEN
NENH BA SUNG
THUY VAN TRAN
MINH DUC LE
HAI NGOC NGO
Source :
Acta Herpetologica. Dec2023, Vol. 18 Issue 2, p131-138. 8p.
Publication Year :
2023

Abstract

The Black-spotted Paddy Frog (Micryletta nigromaculata) was recently discovered from northern Vietnam. Due to its restricted distribution in limestone karst forests and habitat degradation, the endemic species has been listed as "Endangered" in the IUCN Red List. However, knowledge about the natural history of this species is scarce, including data on its dietary ecology. Recent field surveys revealed new populations of M. nigromaculata occurring in Son La Province, northwestern Vietnam based on morphological analysis. Using the stomach-flushing method, we analyzed stomach contents of 45 individuals (21 males and 24 females) from a total of 52 captured frogs because stomachs of six males and one female (13.5%) were empty. The food spectrum of M. nigromaculata comprises 12 types with a total of 691 prey items (687 invertebrate items and four unidentified items), belonging to six insect orders, larvae and Araneae. Similar to other species of the family Microhylidae, M. nigromaculata is also identified as an ant (Formicidae) - termite (Rhinotermitidae) eating specialist with distinctly higher percentages of occurrence frequency (F = 65 %), number of prey items (N = 80 %), and importance (Ix = 75 %) than those of remaining types. The Simpson diversity index of 0.939 shows a high abundance of food prey in the wild, and the Evenness index of 0.536 suggests biased consumption of feeding selection for M. nigromaculata. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
18279635
Volume :
18
Issue :
2
Database :
Academic Search Index
Journal :
Acta Herpetologica
Publication Type :
Academic Journal
Accession number :
174652941
Full Text :
https://doi.org/10.36253/a_h-14516