Nghiên cứu này được tiến hành với mục tiêu đánh giá phân bố theo không gian và thời gian của loài tôm sắt cứng (Parapenaeopsis hardwickii) ở cửa Cổ Chiên, cửa Đại, cửa Hàm Luông, thuộc hệ thống sông Mê Kông. | TNU Journal of Science and Technology 228 13 175 - 183 PRELIMINARY DATA ON DISTRIBUTION OF THE SWORD PRAWN PARAPENAEOPSIS HARDWICKII MIERS 1878 CRUSTACEA PENAEIDAE IN THE MEKONG ESTUARIES Tran Thanh Thai1 2 Ngo Xuan Quang1 2 Ha Hoang Hieu3 Nguyen Thi My Yen2 Tran Thi Hoang Yen2 Nguyen Xuan Dong1 2 Pham Thanh Luu1 2 1Graduate University of Science and Technology VAST 2Institute of Tropical Biology - VAST 3Faculty of Environment - Van Lang University ARTICLE INFO ABSTRACT Received 15 6 2023 Ecological characteristics of shrimp assemblages in the Mekong estuaries remain poorly understood. Filling this gap this research is to assess spatiotemporal Revised 04 8 2023 distribution of the sword prawn Parapenaeopsis hardwickii in the Co Chien Dai and Ham Luong estuaries which are part of the Mekong River system. In addition Published 07 8 2023 the study evaluated the influence of salinity on the distribution of the sword prawn. Shrimp samples were collected using bottom trawling in March dry season and KEYWORDS August rainy season of 2022. Data on density and biomass of the sword prawn were assessed by estuary salinity gradient and season. The results revealed that the Aquaculture highest density and biomass of the sword prawn were found in the Dai estuary Ben Tre Province followed by the Ham Luong and Co Chien estuaries. Locations outside the river mouths had significantly higher density and biomass of the sword prawn compared Biomass to locations inside the estuaries. Additionally the dry season exhibited much higher Density density and biomass compared to the rainy season. However the density and Fishery biomass of the sword prawn did not differ among the estuaries but varied based on the salinity gradient and season. Our results demonstrated that salinity strongly influenced the distribution of the sword prawn. The research findings provide fundamental ecological information about the sword prawn which is valuable for future conservation and aquaculture of this .
