Growth Pattern, Mortality and Exploitation Rate of the Giant African Threadfin, Polydactylus quadrifilis (Cuvier, 1829) from Ebrié Lagoon (Potou Sector, Côte d’Ivoire)
Théophile Aké Bédia, Bakari Coulibaly, Yao Aristide Konan, Essetchi Paul Kouamelan, Valentin N’douba
Asian Journal of Fisheries and Aquatic Research · pp. 33–42 · Published 2 Oct 2020
10.9734/ajfar/2020/v9i230157Abstract
The study evaluated some population parameters of Polydactylus quadrifilis within Ebrié lagoon (Potou sector). Samples were obtained using artisanal gillnet fishery from April 2004 to March 2006. A total of 741 individuals of P. quadrifilis ranged from 11 to 70 cm were examined. Population parameters were estimated where asymptotic length (L∞) was found 60 cm, growth rate (K) 0.33 per year, the longevity (T max) 9.09 years, and growth performance index (Φ′) 3.06. The length at first capture (Lc50 = 10.60 cm) was lower than the length at first maturity (Lm50 = 40 cm). Total mortality rate (Z) was calculated as 1.10 per year including natural mortality and fishing mortality. The exploitation rate (E=0.36) was found to be less than the maximum exploitation rate (E max = 0.44) and indicated that P. quadrifilis is not overexploited. The current exploitation rate should be maintained by sustainable fisheries measures including monitoring of fishing effort.
Cited by 1
M. Golam Mustafa, Amy Halimah Rajaee, Hadi Hamli · PeerJ · 2021
Related research
- Detecting Environmental Stress of Tropical Lagoon Using Abundance-Biomass Curve of Benthic Macroinvertebrate Assemblages (Ebrié lagoon, Côte d'Ivoire, West Africa) — shares topic coverage
- Ecological Risk Link to Trace Metals in Waters and Sediments along the Abobo-Doumé Fish Market in Ebrié Lagoon, Côte d’Ivoire — shares topic coverage
- Determination of Total Mercury (THg) and Methylmercury (MeHg) in Samples of Crabs (Callinecte amnicola) — shares topic coverage
- Gill Monogeneans Infestation and Condition Factor Assessment of Hemichromis fasciatus (Cichlidae) from the Ebrie Lagoon, Côte d’Ivoire — shares topic coverage
- Population Dynamics of Gudusia chapra (Hamilton, 1822) from Lake Kaptai, Bangladesh — shares topic coverage
Article metrics
Real usage data collected on this platform.
0
Page views
0
PDF downloads
0
Outbound clicks
1
Citations
Views by country
Approximate, from request IP at view time — not citizenship or institution. Countries with fewer than 5 views are grouped as "Other".
No views recorded yet.
Traffic sources
Referring site, by host.
No traffic recorded yet.
Views and downloads exclude known bots/crawlers. Citations combines this platform's own DOI-resolved index with each external source's own reported total — see Cited by above for individually listed citing works. Last refreshed 0 seconds ago.