Biological characteristics of the japanese scad <i>Decapterus maruadsi </i> in Thuan An estuary, Thua Thien Hue Province
Keywords:Decapterus maruadsi, biological characteristics, Thuan An estuary.
A total of 257 Decapterus maruadsi individuals of collected from Thuan An estuary in Phu Vang District, Thua Thien Hue Province were analyzed. Results showed that the fork length ranged from 90 mm to 215 mm (160.2 mm on average) and mainly in the 140–180 mm range (86.8 %). Of three age groups (0+ to 2+), the fished stock belongfrom is primarily to the 1+ age group (63.8%) and 0+ age group (28.8%). Of five stomach fullness levels (0 to 4), the second and fourth degree made up significantly proportions, being 29.6% and 31.5%, respectively. For the five fat levels (0 to 4), the fourth degree made up 86.0%. The females to males ratio was 1.00 : 1.42. von Bertalanffy’s growth model followed the equation: Lt = 203.77 × (1–e-0.3747(t+3.0272)).
Bui D. C., Chu Tien Vinh, Nguyen Phi Dinh, 1998. Some biological characteristics and fisheries status of round scad (Decapterus maruadsi) Indian mackerel (Rastrelliger kanagurta) and Tunas in seawaters of Viet Nam. Collection of researches for marine fishes. Agriculture Publishing, Vol 1: pp.132–141.
Carpenter K. E., Niem V. H., 1999. FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 3. Batoid fishes, chimaeras and bony fishes part 1 (Elopidae to Linophrynidae), Food and Agriculture Organization of the United Nations.
Capenter, K. E., Niem, V. H.,1999. FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. The living marine resources of the Western Central Pacific: vol 4 bony fishes part 2 (Mugilidae to Carangidae). Food and Agriculture Organization of the United Nations.
Chen G. B., Quiu Y. S., 2003. Study on growth mortality and reasonable utilization of Decapterus maruadsi in northern continental shelf waters of South China Sea, Journal of Oceanography in Taiwan strait, pp. 32.
Hoang N. S., Vu Viet Ha, 2016. Biological characteristics of round scad decapterus maruadsi (Temminck & Schlegel, 1843) in the tonkin gulf. Vietnam Marine Science and Technology, 16(2): 205−213.
Kimura S., Katahira K., Kuriiwa K., 2013. The red-fin Decapterus group (Perciformes: Carangidae) with the description of a new species, Decapterus smithvanizi. Ichthyological Research, Vol 60: pp. 363–379.
Le D. G., Vu Viet Ha, Tran Van Cuong, 2014. Determining the spawning season of some marine fishes in Thanh Hoa province and adjunction waters. Agriculture Publishing, Vol 21: 90−95.
Le T. C., 1885. Growth of round scad in East Eea Vietnam. Documentary sources of Research Institute for Marine fisheries, pp. 52.
Nguyen P. D., 1991. Biological characteristics of Japanese scad Decapterus maruadsi in seawater in Vietnam. The 3nd National Conference on Marine, Science report Collection, Biology and Marine Biotechnology, Marine Ecology, Vol 1: pp. 36–45.
Nguyen P. D., 1998. Growth of round scad in East sea Vietnam. Marine researches collection, pp. 209–226.
Nguyen X. H., 1996. Growth and stock dynamic and the catch ability of some commercial fish species in the waters of Binh Thuan - Ninh Thuan, summarizing the dissertation thesis of Candidate of Biological Sciences, University of Science - VNU Hanoi, pp.24.
Nguyen V.N., 1999. Some biological characteristics of Japanese scad Decapterus maruadsi and yellowstripe scad Selaroides leptolepis in Vietnam. Documentary sources of Research Institute for Marine fisheries, p.151.
Scheneider J. C., Laaram P. W., Gowing H., 2000. Age and growth methods and state average, Manual of fishery survey method II: with periodic updates, Michigan Department of Natural Resources, Fisheries Special Report 25, Ann Arbor, pp. 148.