Main Article Content
The analysis of stomach contents from 45 specimens of Son La province Nanorana yunnanensis identified 301 prey items of 23 categories. Coleoptera shows the highest frequency of prey items found in 36 stomachs. Prey items of N. yunnanensis were more diverse in May and October with 18 categories. Insect larvae had the highest volume of prey items, 25.45% of total volume of prey items, followed by Mollusca (19.34%), Lepidoptera (18.60%) and Coleoptera (11.27%). Important prey items of N. yunnanensis were Coleoptera (Ix Index 21.28%), insect larvae (15.56%), Lepidoptera (13.08%) and Mollusca (8.40%). The food spectrum in the stomach of males (21 categories) was more diverse than that in the stomach of females (17 categories) and immature individuals (14 categories).
Important index, Nanorana yunnanensis, prey categories, Son La province, volume
 Phạm Văn Anh, Từ Văn Hoàng, Nguyễn Quảng Trường, Phạm Thế Cường, Sồng Bả Nênh, Bùi Thế Quyền, Hoàng Lê Quốc Thắng, Họ Ếch nhái chính thức (Amphibia: Anura: Megophrydae) ở Tỉnh Sơn La, Báo cáo khoa học về nghiên cứu Lưỡng cư, Bò sát ở Việt Nam, Hội nghị khoa học toàn quốc lần thứ 3 (2016) 133.
 G.A. Boulenger, A monograph of the South Asian, Papuan, Melanesian and Australian frogs of the genus Rana, Records of the Indian Museum 20 (1920) 1.
 A. Ohler, A. Dubois, Phylogenetic relationships and generic taxonomy of the tribe Paini (Amphibia, Anura, Ranidae, Dicroglossinae) with diagnoses of two new genera, Zoosystema, Paris 28 (2006) 769.
 L. Fei, C.-y. Ye, J.-p. Jiang, Colored Atlas of Chinese Amphibians and Their Distributions. Sichuan, China: Sichuan Publishing House of Science & Technology, 2012.
 IUCN, The IUCN Red list of Threatened Species, Version 2017.3. http://www.iucnredlist.org/, 2018.
 S.V. Nguyen, C.T. Ho, T.Q. Nguyen, Herpetofauna of Vietnam, Edition Chimaira, Frankfurt am Main, 2009.
 M. Solé, O. Beckmann, B. Pelz, A. Kwet, W. Engels, Stomach – flushing for diet analysis in anurans: an improved protocol evaluated in a case study in Araucaria forests, southern Brasil, Studies on Neotropical Fauna and Environment 40 (2005) 23.
 Csiro, The Insects of Australia, 2 Vols, Melbourne University Press, Carlton, Victoria, 1991.
 I.M. Millar, V.M. Uys, R.P. Urban, Collecand preserving Isectas and Arachnids, SDC, Switzerland, 2000.
 Thái Trần Bái, Động vật không xương sống, Nxb Giáo dục Việt Nam, 2003.
 W.E. Magnusson, A.P. Lima, W.A. Silva, M.C. Araújo, Use of geometric forms to estimate volume of invertebrates in ecological studies of dietary overlap, Copeia 1 (2003) 13.
 V.M. Caldart, S. Iop, T.R.N. Bertaso, C. Zanini, Feeding ecology of Crossodactylus schmidti (Anura: Hylodidae) in southern Brazil, Zoological studies, 51 (2012) 48.