tailieunhanh - Meiofauna in the organic shrimp farms of mangrove forest, Ca Mau province

Results showed that the meiofauna, especially Nematode communities at the Tam Giang’s organic shrimp farms (TGOSF) in Ca Mau mangrove express high densities and biodiversity and Nematoda dominate numerically in the mangrove meiofauna ( to %). In total, 15 major taxa were found with the dominant taxa belonged. | Vietnam Journal of Science and Technology 55 (3) (2017) 271-284 DOI: MEIOFAUNA IN THE ORGANIC SHRIMP FARMS OF MANGROVE FOREST, CA MAU PROVINCE Tran Thanh Thai1, Nguyen Thi My Yen1, Nguyen Tho2, Ngo Xuan Quang1, * 1 2 Institute of Tropical Biology, Vietnam Academy of Science and Technology, 85 Tran Quoc Toan St., Dist. 3, Hochiminh City Hochiminh City Institute of Resources Geography, Vietnam Academy of Science and Technology, 01 Mac Dinh Chi St., Dist. 1, Hochiminh City * Email: ngoxuanq@ Received: 16 June 2016, Accepted for publication: 9 May 2017 ABSTRACT Meiofaunal communities in the organic shrimp farms (OSF) of Ca Mau province was investigated in 8 ponds (Tam Giang Commune, Nam Can District). Results showed that the meiofauna, especially Nematode communities at the Tam Giang’s organic shrimp farms (TGOSF) in Ca Mau mangrove express high densities and biodiversity and Nematoda dominate numerically in the mangrove meiofauna ( to %). In total, 15 major taxa were found with the dominant taxa belonged to three dominant groups: Nematoda, Copepoda, and Rotifera. The densities of meiofauna ranged from 287 ± to 3,129 ± 1, cm-2. Seventy fifth nematode genera belonging to 24 families with the most important typifying genera were Terschellingia, Daptonema, Parodontophora, Ptycholaimellus, Sabatieria, Hopperia, Anoplostoma, Pseudolella, Gomphionema. The TGOSF in the study area was characterized by homogeneity and stabilization. Keywords: mangrove, meiofaunal communities, nematode biodiversity, bioindices. 1. INTRODUCTION Management practices for the organic shrimp farms in Ca Mau province (Southeastern Vietnam) introduces specific requirement to an organic standard. They are based on the holistic agriculture management, environmentally friendly and sustaining biodiversity. All input materials shall be natural products, avoid using synthetic products and any genetically modified organisms or genetic .