Nghiên cứu thành phần loài và đặc điểm phân bố của giun đất ở huyện Hồng Ngự, tỉnh Đồng Tháp

Abstract

The earthworm is one of the animal groups which have an important role in soil ecology and human life. In our investigation, we have recognized 10 earthworm species falling into 6 genera and 4 families in Hong Ngu District, Dong Thap Province. They are also those found previously in the Mekong Delta, of which the genus Pheretima (Megascolecidae family) has the largest number (accounting for 82.76% of all). Besides, there are representatives of the genus Lampito (Megascolecidae family), Pontoscolex (Glossoscolecidae family), Drawida (Moniligastridae family), and Dichogaster (Octochaetidae family). In the habitats studied, those of the rice fields and short-term crops abound with the highest number of earthworm species (5), while the long-term fruit fields have the lowest (2 species).