Biometric indices and population parameters of three polynemid fishes from Batang Lassa Estuary of East Malaysia
| العنوان: | Biometric indices and population parameters of three polynemid fishes from Batang Lassa Estuary of East Malaysia |
|---|---|
| المؤلفون: | Hadi Hamli, M Golam Mustafa, Amy Halimah Rajaee, Khairul Adha A. Rahim |
| المصدر: | PeerJ PeerJ, Vol 9, p e12183 (2021) |
| بيانات النشر: | PeerJ Inc., 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | LWRs, Veterinary medicine, Fishing, Population, Marine Biology, Ecosystem Science, North-West Borneo Island, General Biochemistry, Genetics and Molecular Biology, Condition factor, Growth and mortality, Juvenile, Fisheries and Fish Science, education, geography, education.field_of_study, geography.geographical_feature_category, biology, Ecology, General Neuroscience, Estuary, General Medicine, biology.organism_classification, Xanthonema, Natural Resource Management, Body shape, Threadfin fishes, Medicine, Tropical deltaic estuary, Allometry, Recruitment, General Agricultural and Biological Sciences, Threadfin |
| الوصف: | The length-weight relationships (LWRs), condition factor (Kn), growth, mortality and exploitation status of three polynemid fishes,i.e.,Filimanus xanthonema(Valenciennes, 1831),Polynemus melanochir(Valenciennes, 1831) andPolynemus paradiseus(Linnaeus, 1758) from Batang Lassa River estuary were estimated. Fish samples were caught during April 2019 to September 2020 using the ESBN (locally calledGnian) having 1.25 to 4.00 cm mesh size. The total length (TL) and body weight of each individual fish was measured to the nearest 0.1 cm and 0.01 g respectively. The growth coefficients (b) forF. xanthonema,P. melanochirandP. paradiseus, were 2.880, 2.717 and 2.724 with theR2values 0.956, 0.972 and 0.936 respectively. Estimated growth coefficients indicated a negative allometric growth pattern for all three threadfin fishes. To date, information regarding length-weight relationships forF. xanthonemaandP. melanochiris insufficient whereas the information is available forP. paradiseus. About 40–48% of fishes exhibited flat or thin body shape (Kn < 1), 48–50% were rounded or fat (Kn > 1) and only 1–3% of fishes showed proportional body shape (Kn = 1). The growth parametersL∞,Kand ϕ’ were estimated at 15.75 cm, 0.95 yr−1and 2.37 forF. xanthonema;27.61 cm 0.87 yr−1and 2.82 forP. melanochir; and 27.30 cm, 0.58 yr−1and 2.64 forP. paradiseus;respectively. The estimated natural mortality (M) included 2.10, 1.69 and 1.30 yr−1; the fishing mortality (F) 0.57, 0.67 and 0.60 yr−1; and exploitation ratio (E) 0.21, 0.28 and 0.31 forF. xanthonema, P. melanochirandP. paradiseusrespectively. The study concluded that the stocks are still under exploitation (E < 0.5) condition. However, the studied Batang Lassa estuary could be a potential nursery ground considering the minimum lengths of 5.0, 3.8 and 4.0 cm forF. xanthonema, P. melanochirandP. paradiseusrespectively. Therefore, management initiatives are needed to escape juvenile catches. |
| اللغة: | English |
| تدمد: | 2167-8359 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcefd1ad2b5a7cd2bd8b4b8a0f76e26f http://europepmc.org/articles/PMC8522647 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....fcefd1ad2b5a7cd2bd8b4b8a0f76e26f |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 21678359 |
|---|