Research activity information

• Early-life density-dependent mortality in the Gulf of Thailand
  Jeeratorn Yuttharax; Pavarot Noranarttragoon; Changoma Marko Fransis; Methee Kaewnern; Matsuishi Takashi Fritz
  openRxiv, 19 Feb. 2026
  Abstract
  
  Density-dependent mortality is a key mechanism regulating fish population dynamics, yet empirical evidence from tropical systems remains limited. This study investigated density-dependent survival during early life stages of 25 dominant taxa from trawl landings in the Gulf of Thailand, a productive tropical system dominated by multispecies and multi-gear fisheries, where trash fish (TF) catches from trawlers comprise proportions of juveniles. Temporal variation in the abundance of fish at ages smaller than L ₂₅ was linked to subsequent survival patterns to evaluate compensatory dynamics. Growth parameters revealed wide interspecific variation in life-history strategies, ranging from fast-growing ( Encrasicholina spp.) to a slower-growing demersal group (Sciaenidae). Most taxa exhibited a negative density– survival relationship, with 11 taxa (including Rastrelliger kanagurta, Atule mate , and Lutjanus lutjanus ) showing strong and significant compensatory density dependence ( p < 0.001), indicating elevated mortality at higher juvenile densities. Evidence for depensatory dynamics was weak and statistically unsupported. These results provide empirical biological evidence that compensatory density-dependent mortality commonly operates during early life stages in tropical multispecies and multi-gear fisheries. The findings suggest that juvenile removal via TF catches does not uniformly translate into reduced long-term productivity, highlighting the importance of incorporating early-life density dependence into stock assessment and management frameworks.
• Estimation of the spatiotemporal distribution of fish and fishing grounds from surveillance information using machine learning: The case of short mackerel (Rastrelliger brachysoma) in the Andaman Sea, Thailand
  Chonlada Meeanan; Pavarot Noranarttragoon; Piyachoke Sinanun; Yuki Takahashi; Methee Kaewnern; Takashi Fritz Matsuishi
  Regional Studies in Marine Science, 102914, 102914, Elsevier BV, Mar. 2023
  Scientific journal
• Effectiveness of adaptive real-time closures for managing migratory species in data-limited multispecies fisheries
  Munehara Masami; Methee Kaewnern; Pavarot Noranarttragoon; Matsuishi Takashi Fritz
  Asian Fisheries Science, 34, 4, 365, 372, 31 Dec. 2021, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
  English, Scientific journal
• Simulations of fixed closure and real-time closure to manage migratory fish species for data-limited fisheries
  MUNEHARA Masami; Methee Kaewnern; Pavarot Noranarttragoon; MATSUISHI Takashi Fritz
  Ocean and Coastal Management, 211, 105736, 01 Oct. 2021, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
  English, Scientific journal
• Validation of a feedback harvest control rule in data-limited conditions for managing multispecies fisheries
  Harlyan Ledhyane Ika; Wu Dengke; Kinashi Ryosuke; Kaewnern Methee; Matsuishi Takashi
  CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES, 76, 10, 1885, 1893, Oct. 2019, [Peer-reviewed]
• Oxygen consumption rates of hybrid red tilapia at different sizes during challenge to water velocity
  Jesada Is-Haak; Methee Kaewnern; Ruangvit Yoonpundh; Wara Taparhudee
  Journal of Fisheries and Environment, 43, 52, 65, 01 May 2019
• Pond soil characteristic in reclaimed tidal lowlands and its correlation with the water quality for aquaculture
  M. Fitrani; I. Wudtisin; M. Kaewnern; R. H. Susanto
  IOP Conference Series: Earth and Environmental Science, 236, 01 Mar. 2019
• Status of trash fish from bottom trawl fishery and utilization in Myeik Township, Tanintharyi Region, Myanmar
  Arkar Myo; Thanitha Darbanandana; Anukorn Boutson; Methee Kaewnern
  Journal of Fisheries and Environment, 42, 01 Sep. 2018
• The relationship between land use and water quality in bangpakong estuary, Thailand
  Somsak Bundao; Narong Veeravaitaya; Methee Kaewnern; Suchart Ingthamjitr
  Journal of Fisheries and Environment, 42, 24, 31, May 2018
• The Catch of Fish Trap from Two Different Fishing Grounds around the Coastal Area of Rayong Province
  Methee Kaewnern
  Proceedings of 55th Kasetsart University annual conference, Agriculture Science (Plants, Animals, Veterinary Medicine, Fisheries, and Agriculture Extension and Home Economics), Kasetsart University, Bangkok, 629, 636, 2017, [Peer-reviewed]
  English, International conference proceedings
• Water Resources Used in White Shrimp Culture in Ban Lueam District, Nakhon Ratchasima Province
  Toprom P; Kaewnern M
  Proceedings of 54nd Kasetsart University annual conference, Number 1 (Plants, Animals, Veterinary Medicine, Fisheries, and Agriculture Extension and Home Economics, Kasetsart University, Bangkok, 891, 897, 2016, [Peer-reviewed]
  English, International conference proceedings
• The Catch, Catch Compositions from Floated Squid Trap and Some Behaviors of Bigfin Reef Squid (Sepioteuthis lessoniana) Inside the Trap around the coastal area of Rayong Province 136
  Methee Kaewnern
  Proceedings of the 5th Marine Science Conference 2016. 1-3 June 2016. Rama Gardens Hotel, Bangkok., 136, 147, 2016, [Peer-reviewed]
  English
• Bycatch and Discards from Bottom Catch Gillnet Fishery Around the Coast of Rayong Province.
  Chanchiem T; Boutson A; Kaewnern M
  Proceedings of the 5th Marine Science Conference 2016. 1-3 June 2016. Rama Gardens Hotel, Bangkok., 160, 169, 2016, [Peer-reviewed]
  English, International conference proceedings
• Organic contents and pH profiles of sediments in cockle farm at Bandon Bay, Surat Thani Province
  Chanakarn S; Kaewnern M; Wudtisin I; Yoshikawa T; Okamoto Y; Watanabe K; Ishikawa S; Salaenoi J
  Khon Kaen Agricultural Journal, 43, 2, 265, 276, 2015, [Peer-reviewed]
  English, Scientific journal
• Economic value of Seaweed Hydropuntia changii in Costal Area of Ao Yai Sub-district, Meuang District, Trat Province.
  Petsut N; Kaewnern M; Dulyapurk
  Proceedings of 52nd Kasetsart University annual conference, Number 3 (Fisheries, Agricultural Extension and Home Economics), Kasetsart University, Bangkok, 284, 294, 2014, [Peer-reviewed]
  English, International conference proceedings
• Application of Remote Sensing and Geographic Information Syatem on Monitoring of Floating Weed in Noghan, Sakon Nakhon Province.
  Pengseesang R; Kaewnern M
  Proceedings of 52nd Kasetsart University annual conference, Number 3 (Fisheries, Agricultural Extension and Home Economics), Kasetsart University, Bangkok, 300, 309, 2014, [Peer-reviewed]
  English, International conference proceedings
• Geoinformatic Application for Good Aquaculture Practice (GAP) Certification of Pacific White Shrimp Farming in Pra Nakhon Si Ayuthaya Province
  Thawinwan W; Kaewnern M
  Proceedings of 51st Kasetsart University annual conference, Number 2 (Veterinary Medicine, Fisheries), Kasetsart University, Bangkok, 457, 465, 2013, [Peer-reviewed]
  English, International conference proceedings
• Perception of Consumers on Puffer Fish and Willingness to Pay for Consuming Puffer Fish (Lagocepphalus spadiceus).
  Kaewnern M; Dulyapruk V; Mookdasanit J; Jumnongsong S
  Proceedings of 51st Kasetsart University annual conference, Number 2 (Veterinary Medicine, Fisheries), Kasetsart University, Bangkok, 439, 447, 2013, [Peer-reviewed]
  English, International conference proceedings
• A comparison and Financial Analysis of Ornamental Fish Farms that Rearing Single Species Fish and Many Species Fish.
  Inprasit P; Kaewnern M; Yoonpunch R
  Proceedings of 50th Kasetsart University annual conference, Number 1 (Animals, Veterinary Medicine, Fisheries), Kasetsart University, Bangkok, 455, 461, 2012, [Peer-reviewed]
  English, International conference proceedings
• A stability assessment on seasonal variation of seaweed beds in the Trat peninsula of Thailand
  Petsut N; Chirapart A; Keawnern M
  Biodiversity Journal, 3, 3, 229, 236, 2012, [Peer-reviewed]
  English, Scientific journal
• Development of Good Aquaculture Practice Standard for Siamese Fighting Fish.
  Kaewkhao A; Kaewnern M; Tepahudee W
  Proceedings of 50th Kasetsart University annual conference, Number 1 (Animals, Veterinary Medicine, Fisheries), Kasetsart University, Bangkok, 462, 469, 2012, [Peer-reviewed]
  English, International conference proceedings
• Evaluation of Potentail, Problems and Solutions on Application of Geographic Information Systems for Coastal Management: A Case Study of Si Racha District, Chon Buri Province.
  Tawaornwachiratam V; Kaewnern M; Tantanasarit S
  Proceedings of 49th Kasetsart University annual conference, Number 3 (Fisheries), Kasetsart University, Bangkok, 535, 545, 2011, [Peer-reviewed]
  English, International conference proceedings
• Contribution of mollusc culture to control eutrophication in the coastal bay: a case study of Bandon Bay, Surat Thani, Thailand
  Kaewnern M; Yakupitiyake A
  Kasetsart University Fisheries Research Bulletin, 32, 2, 1, 18, 2008, [Peer-reviewed]
  English, Scientific journal
• Shrimp and mollusc culture at the Bandon Bay in Thailand: A situation analysis
  Kaewnern M; Yakupitiyake A
  Asian Fisheries Science., 21, 35, 54, 2008, [Peer-reviewed]
  English, Scientific journal
• Status of Trash Fish Fisheries and Utilization for Aquaculture in Thailand
  Kaewnern M; Wangvoralak S
  Kasetsart Journal (Nat. Sci.), 39, 70, 77, 2005, [Peer-reviewed]
  English, Scientific journal