title: Population dynamics of shrimps in littoral marine waters of the Mekong Delta, south of Viet Nam.
abstract: The population dynamics of eight commercial species of shrimp (Haliporoides sibogae, Harpiosquilla harpax, Metapenaeus affinis, Metapenaeus brevicornis, Metapenaeus tenuipes, Parapenaeopsis cultrirostris, Parapenaeopsis gracillima and Parapenaeus maxilipedo) distributed in littoral marine zone of the Mekong Delta were investigated. Length-based stock assessment using FiSAT II software package was used to assess the growth and mortality parameters: Asymptotic size (L8), growth coefficient (K), total (Z) and natural (M) mortality, exploitation rate (E), recruitment pattern, current probability of capture and selectivity of fishing gears. Yield-per-recruit analyses were carried out showing different levels of the exploitation. Results showed that the maximum sustainable yield would be reached for an exploitation rate higher than the current one for each population. However, the size of first capture should be increased for every population. The findings indicated that the current exploitations of shrimp populations distributed in littoral marine zone of the Mekong Delta are under exploitation level for maximum sustainable yield; however, all the shrimp populations are subject to growth over-exploitation.
authors.affiliation: Department of Fisheries Management and Economics, College of Aquaculture and Fisheries, Cantho University 3/2 Street, Cantho City, Viet Nam.
authors.forename: T D
authors.initials: TD
authors.lastname: Dinh
authors.forename: J
authors.initials: J
authors.lastname: Moreau
authors.forename: M V
authors.initials: MV
authors.lastname: Van
authors.forename: N T
authors.initials: NT
authors.lastname: Phuong
authors.forename: V T
authors.initials: VT
authors.lastname: Toan
mesh_terms: D000818:Animals; D018533:Biomass; D003247:Conservation of Natural Resources; D004463:Ecology; D005398:Fisheries; D005618:Fresh Water; D008954:Models, Biological; D033561:Penaeidae / Q000502:physiology*; D011156:Population Density; D011157:Population Dynamics; D012984:Software; D013045:Species Specificity; D014744:Vietnam; D014867:Water
chemical_list: D014867:Water