Portal de Periódicos da CAPES

Đa dạng loài và đặc điểm phân bố giun đất ở tỉnh Bà Rịa - Vũng Tàu

2017; Volume: 53; Linguagem: Inglês

10.22144/ctu.jvn.2017.146

2815-5599

Nguyễn Thanh Tùng, Nguyễn Phúc Hậu, Trương Thúy Ái, Nguyễn Quốc Nam,

Invertebrate Taxonomy and Ecology

Basing on the analysis of 1200 earthworms individuals in 58 sites in Ba Ria - Vung Tau province on October 2016, this study inventoried that there were 26 species of earthworm in 10 genera and 5 families. Of those species, seventeen species were firstly recorded in the study area; additionally, the genus Pheretima sensus stricto was firstly recorded in Vietnam, and the species Metphire mangophila (Nguyen, 2011) was adjusted as a junior synonym of Metaphire easupana (Thai & Huynh, 1993). Regarding to species composition and community structure, family Megascolecidae absolutely dominated with 22 species (84.60%); families Almidae, Rhinodrilidae, Moniligastridae and Octochaetidae with 1 species for each one. The genus Metaphire (12 species) and Amynthas (5 species) were more dominant than other genera; the genus Polypheretima was not distributed in mainland of the study site. Within the study area, the similarity index of species composition among terrains is rather high as over 60%, but low as of 29.91%–53.76% among habitats. Dominance index of earthworm species in the study area was low (λ < 0.24), However, M. bahli, A. polychaetiferus and M. houlleti were more dominant than other species.