DIET OF TWO SPECIES OF THE GENUS Hylarala Tschudi, 1838   IN BEN EN NATIONAL PARK, THANH HOA PROVINCE

Trịnh Thị Hồng; Ngô Ngọc Hải; Đậu Quang Vinh; Phạm Thị Nhị

doi:10.34238/tnu-jst.10270

DIET OF TWO SPECIES OF THE GENUS Hylarala Tschudi, 1838 IN BEN EN NATIONAL PARK, THANH HOA PROVINCE

About this article

Received: 03/05/24 Revised: 31/05/24 Published: 11/06/24

Authors

1. Trinh Thi Hong, Hong Duc University; Graduate University of Science and Technology – VAST
2. Ngo Ngoc Hai, Institute of Genome Research
3. Dau Quang Vinh, Hong Duc University
4. Pham Thi Nhi , Institute of Ecology and Biological Resources

Abstract

This study provides diet composition of two species, Hylarana guentheri (Boulenger, 1882) and Hylarana annamitica (Sheridan and Stuart, 2018), recorded in streams in the evergreen forest of Ben En National Park, Thanh Hoa Province. Stomach contents were obtained from 15 individuals of H. guentheri and 10 individuals of H. annamitica by using the stomach-flushing method. A total of 31 invertebrate families were identified, belonging to 13 orders. Accordingly, Coleoptera contained the most diverse number of invertebrate families (n = 8, 25.8%), followed by Araneae (n = 7, 22.6%). There were 25 types of invertebrates eaten by H. guentheri and 11 types were used by H. annamitica. Formicidae is the most important prey in both frog species, H. guentheri (Importance index, Ix = 30.39%) and H. annamitica (Ix = 35.35%). However, these two congeners of Hylarana present the tropic segregation with the medium Pianka index – Ojk of 0.39 (95% CI: 0.01 – 0.63).

Keywords

Importance index; Tropic segregation; Hylarana guentheri; Hylarana annamitica; Formicidae

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DOI: https://doi.org/10.34238/tnu-jst.10270

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