tailieunhanh - Fruit - feeding butterflies recorded by traps

The study of habitat distribution of fruit-feeding butterflies in the tropical rainforest is important for understanding their diversity in the tropics and for determining responses of butterflies to forest disturbance. Some previously works demonstrate the construction and methods of using the portable bait traps for collecting and taxonomical and ecological studies of tropical butterflies (De Vries, 1988; Austin, Riley, 1995; Tangah et al., 2004; Hamer et al., 2006; Hayes et al., 2009). The current work is the first to describe the bait trap use in Vietnam. | HỘI NGHỊ KHOA HỌC TOÀN QUỐC VỀ SINH THÁI VÀ TÀI NGUYÊN SINH VẬT LẦN THỨ 4 FRUIT-FEEDING BUTTERFLIES RECORDED BY TRAPS A. L. MONASTYRSKII Vietnam-Russia Tropical Research Centre The study of habitat distribution of fruit-feeding butterflies in the tropical rainforest is important for understanding their diversity in the tropics and for determining responses of butterflies to forest disturbance. Some previously works demonstrate the construction and methods of using the portable bait traps for collecting and taxonomical and ecological studies of tropical butterflies (De Vries, 1988; Austin, Riley, 1995; Tangah et al., 2004; Hamer et al., 2006; Hayes et al., 2009). The current work is the first to describe the bait trap use in Vietnam. I. MATERIAL AND METHOD The standard fruit-baited traps used to sample butterfly individuals have been set in the lower canopy. Butterflies were collected by portable traps suspended 1–2 m above the ground (Figure 1). Traps were 30 cm in diameter and 40 cm in height, and were baited with fresh mashed bananas. Following some time-proved methods traps were baited with fresh bananas on the first day of trapping and were re-baited every second day with a small piece of fresh fruit. Thus all traps contained a mixture of fresh and well-rotten bait. Traps were checked daily. Butterfly traps were operated throughout the year in different sites of Figure 1: Construction of standard Vietnam and the list of species collected is shown portable bait trap: 1 - hanger; 2 - nylon below (Table 1). netting; 3 - base; 4 - bait container A total 77 butterfly species belonging to three families have been recorded in some sites of northern, central and southern Vietnam. Most species are representatives of Nymphalidae family belonging to subfamilies Satyrinae (28 species), Amathusiinae (13 species) and Limenitidinae (14 species). Satyrines representing genera Elymnias, Melanitis, Coelites, Mycalesis, Neorina, Ypthima and amathusiins of the genera .