en Biology & physiology Biology & physiology پژوهشي Orginal research papers <span lang="TR" style="font-size:11.0pt"><span calibri="" style="font-family:"><span style="color:black">The objective of this study was to analyze growth and mortality parameters, growth patterns, and sex ratios of blue swimming crabs (BSCs) for the population management policy in Southeast Sulawesi waters. The samples were collected weekly at Pamandati, Bungin Permai, and Kasipute mini plants from July to September 2023. </span></span></span><span lang="TR" style="font-size:11.0pt"><span calibri="" style="font-family:"><span style="color:black">Growth parameters were relatively similar to other tropical waters, but total mortality was high. The exploitation rate (E) was generally low (E< 0.5), except in Pamandati (E = 0.58).</span></span></span> <span lang="TR" style="font-size:11.0pt"><span calibri="" style="font-family:"><span style="color:black">BSCs exhibited negative allometric growth (b<3), with carapace width (CW) contributing >55% to weight (W).</span></span></span> <span lang="TR" style="font-size:11.0pt"><span calibri="" style="font-family:"><span style="color:black">Poor environmental conditions of BSC habitat were indicated by a negative condition factor.</span></span></span> <span lang="TR" style="font-size:11.0pt"><span calibri="" style="font-family:"><span style="color:black">Efforts to maintain the sustainability of BSCs population while providing high economic and social value suggest that BSCs exploitation can still be increased until reaching E=0.5, </span></span></span><span lang="TR" style="font-size:11.0pt"><span calibri="" style="font-family:"><span style="color:black">but BSC females should outnumber males to support reproduction.</span></span></span> <span lang="TR" style="font-size:11.0pt"><span calibri="" style="font-family:"><span style="color:black">Juveniles (<10 cm CW) and spawning females should be protected, and mangrove habitats preserved. This study supports and </span></span></span><span lang="TR" style="font-size:11.0pt"><span calibri="" style="font-family:"><span style="color:black">strengthens</span></span></span><span lang="TR" style="font-size:11.0pt"><span calibri="" style="font-family:"><span style="color:black"> sustainable BSC management in Indonesia.</span></span></span> Growth parameters, Mortalities, Portunus pelagicus, Sex ratio, Growth patterns, Condition factors 1093 1109 http://jifro.ir/browse.php?a_code=A-10-4964-1&slc_lang=en&sid=1 A. Suhermen agussuherman@lecturer.undip.ac.id 100319475328460057289 100319475328460057289 No Department of Capture Fisheries of Faculty of Fisheries and Marine Sciences, Diponegoro University, Semarang, Jawa Tengah 50275, Indonesia L. Sara la.sara@uho.ac.id 100319475328460057290 100319475328460057290 Yes Department of Aquatic Resources Management of Faculty of Fisheries and Marine Science, Halu Oleo University. Bumi Tridharma, Kendari 93232, Southeast Sulawesi, Indonesia E. Muhajirah evamuhajirahmsp@gmail.com 100319475328460057291 100319475328460057291 No Department of Marine Biotechnology of Institut Teknologi Kelautan Buton, Balai Kota, Pasarwajo, Buton 93752, Southeast Sulawesi, Indonesia I.P. Yustika intanintanaa@gmail.com 100319475328460057292 100319475328460057292 No Department of Aquatic Resources Management of Faculty of Fisheries and Marine Science, Halu Oleo University. Bumi Tridharma, Kendari 93232, Southeast Sulawesi, Indonesia Y. Yusnaini yusyusnaini@ymail.com 100319475328460057293 100319475328460057293 No Department of Aquaculture of Faculty of Fisheries and Marine Science, Halu Oleo University. Bumi Tridharma, Kendari 93232, Southeast Sulawesi, Indonesia S. Safilu safiluimaluddin@yahoo.com 100319475328460057294 100319475328460057294 No Department of Biology of Faculty of Teaching and Education, Halu Oleo University. Bumi Tridharma, Kendari 93232, Southeast Sulawesi, Indonesia W. Jali mirajwajally@gmail.com 100319475328460057295 100319475328460057295 No Department of Marine Sciences of Faculty of Fisheries and Marine Science, Halu Oleo University. Bumi Tridharma, Kendari 93232, Southeast Sulawesi, Indonesia