05 Technical Publications and Reports on Fishery Resourceshttp://hdl.handle.net/20.500.12066/58032024-03-29T10:17:43Z2024-03-29T10:17:43ZPocket Field Guide: Rays in Southeast Asian Regionhttp://hdl.handle.net/20.500.12066/66252021-02-22T11:47:35Z2021-01-26T00:00:00ZPocket Field Guide: Rays in Southeast Asian Region
This Pocket Field Guide: Sharks and Rays in Southeast Asian Region was prepared through a series of activities at national/ regional levels aimed at supporting SEAFDEC Member Countries in the implementation of CITES provisions with regard to sharks/ rays, under the collaborative program between SEAFDEC and its Member Countries with funding support from CITES Secretariat. The information used in this Field Guide have been sourced from the outputs of the abovementioned activities. This field guide is a book designed to help the readers (e.g. fisheries officers, fisheries researchers, fisheries lecturers/student, etc.) to identify sharks and rays that are commonly found in the Southeast Asian region.
2021-01-26T00:00:00ZPocket Field Guide: Sharks in Southeast Asian Regionhttp://hdl.handle.net/20.500.12066/66242021-02-22T11:52:42Z2021-01-26T00:00:00ZPocket Field Guide: Sharks in Southeast Asian Region
This Pocket Field Guide: Sharks and Rays in Southeast Asian Region was prepared through a series of activities at national/ regional levels aimed at supporting SEAFDEC Member Countries in the implementation of CITES provisions with regard to sharks/ rays, under the collaborative program between SEAFDEC and its Member Countries with funding support from CITES Secretariat. The information used in this Field Guide have been sourced from the outputs of the abovementioned activities. This field guide is a book designed to help the readers (e.g. fisheries officers, fisheries researchers, fisheries lecturers/student, etc.) to identify sharks and rays that are commonly found in the Southeast Asian region.
2021-01-26T00:00:00ZTerminal Report Regional Sharks, Rays and Skates Data CollectionWanchana, WorawitAli, AhmadSulit, Virgilia T.Chanrachkij, IsaraArnupapboom, SukchaiSayan, Suwaneehttp://hdl.handle.net/20.500.12066/65812021-11-28T03:08:01Z2020-01-01T00:00:00ZTerminal Report Regional Sharks, Rays and Skates Data Collection
Wanchana, Worawit; Ali, Ahmad; Sulit, Virgilia T.; Chanrachkij, Isara; Arnupapboom, Sukchai; Sayan, Suwanee
A one-year study on sharks data collection had been implemented from year 2015 to 2016 in collaboration with six SEAFDEC Member Countries with technical support from SEAFDEC Marine Fishery Resources Development and Management Department (SEAFDEC/MFRDMD) and SEAFDEC Training Department (SEAFDEC/TD) under financial support mainly from CITES Secretariat and the Japanese Government. The Standard Operation Procedures (SOP) for Sharks, Rays and Skates Data Collection in the Southeast Asian Waters published by SEAFDEC was used as regional standard for collecting and reporting national data. Information on trade and marketing were also included in this study. Another study was conducted in Cambodia and Myanmar in 2018-2019.
During 2015-2016 study, from a total of 18,097 tons of fish landed in the participating countries during this study, it was found that catch composition of rays, sharks and skates were only 0.9%, 1.4%, and 0.1%, respectively. It was recorded that the landing range from 0.6-5.15% for rays, 0.2-20.7% for sharks, and 0.002-0.3% for skates. It should be noted that the landing of skates was recorded only in Myanmar and Viet Nam. A range of landing per month in the participating countries was 448-4,254 kg for rays, 364-16,445 kg for sharks, and 7-1,650 kg for skates, respectively. A total of 33,495 individual of rays, sharks and skates comprising of 18,546 rays, 13,504 sharks and 1,445 skates were sampled. Total number of species recorded under this study was 70 species of rays, 53 species of sharks, and 5 species of skates. The most abundant species (by number) were Telatrygon biasa for rays, Chiloscyllium punctatum for sharks, and Okamejei cairae for skates. The highest landing by weight was Mobula japonica (37,573 kg with size range from 32-100cm DL) for rays, Alopias superciliosus (53,504 kg with size range from 65-366cm TL) for shark, and Okamejei cairae (17,501 kg, size range 10-58cm TL) for skate.
Regarding fishing effort (CPUE, kg/haul), it was reported that CPUE of trawl fishing range from 0.002-1.46kg, and 0.003-1.023kg for rays and sharks respectively. For gillnet, it was found that CPUE was from 0.008-19.5kg for rays, and 0.005-11.82kg for sharks. Catch per Unit Effort for longline was from 0.04-4.87kg for rays, and 0.5-6.6kg for sharks. For skates, CPUE was range from 0.01- 2.3kg/haul only in trawl fishing.
Regarding the price and marketing of sharks, rays and skates, it range from 1-7.34 USD/kg for rays, 0.22-8.99 USD/kg for sharks, and 0.2-2 USD/kg for skates. The price varies pending on species, size and demand. Almost all sharks, rays, and skates was mainly utilized locally and some products were for foreign markets.
2020-01-01T00:00:00ZStock assessment of Kawakawa (Euthynnus affinis) and Longtail Tuna (Thunnus tonggol) resources in the Southeast Asian watersNishida, Tomhttp://hdl.handle.net/20.500.12066/59982021-11-28T03:08:06Z2017-02-01T00:00:00ZStock assessment of Kawakawa (Euthynnus affinis) and Longtail Tuna (Thunnus tonggol) resources in the Southeast Asian waters
Nishida, Tom
Secretariat in collaboration with TD organized the basic and advance Stock Assessment Training Courses in January and March 2016 under the funding support from Government of Sweden through the SEAFDEC-Sweden project. The training course focused on general stock assessment and was attended by some SEAFDEC Member Countries namely Cambodia, Lao PDR, Myanmar, Thailand and Viet Nam. In addition, Secretariat in collaboration with MFRDMD also conducted the Special Training/Workshop on Stock Assessment of the LOT-KAW using the specific software such as CPUE standardization, A Stock-Production Model Incorporating Covariates (ASPIC)-ver.5, Kobe I (Kobe plot) and Kobe II (Risk assessment) and other relevant software.
The training/workshop could come up with some recommendations that would be useful for further stock assessment of the LOT and KAW of the Southeast Asian region. It is also noted that the genetic studies for LOT and KAW was postponed in 2015 due to the
needs to revise of the work plan and process for data collection, to ensure that good quantity and quality of samples are used for genetic analysis. To follow-up the progress of works implemented during the past years as well as to discuss on the results of the Stock Assessment for LOT and KAW based on the country data compilation and massaging by resources person, the SEAFDEC Secretariat in
collaboration with the MFRDMD organized the 3rd Meeting in Bangkok, 25-27 May 2016.
2017-02-01T00:00:00Z