Impact of seasonal variation on the growth dynamics of the marine catfish, Arius maculatus (Siluriformes: Ariidae) collected from Karachi fish harbour
Overfishing is the main cause of fish stock exploitation in the marine environment. In the current study growth dynamics of the marine catfish, Arius maculatus collected from Karachi Fish Harbour were studied. The relationship between total length and weight (W=aLb) was significantly linear (p<0....
| Autores: | , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/106067 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/106067 |
| Access Level: | acceso abierto |
| Palabra clave: | 591.5 597 Arius maculatus Growth dynamics Marine catfish Length-weight relationship Condition factor Spotted catfish Ecología (Biología) Peces 2401.06 Ecología Animal |
| Sumario: | Overfishing is the main cause of fish stock exploitation in the marine environment. In the current study growth dynamics of the marine catfish, Arius maculatus collected from Karachi Fish Harbour were studied. The relationship between total length and weight (W=aLb) was significantly linear (p<0.001). The condition factor (Kf) varied from 1.06±0.12 to 1.23±0.07. The ‘b’ values and R2 values indicated that the growth was significantly (p<0.001) positive allometric (b>3) in the monsoons season while in the pre- and post-monsoon the growth was reported as significantly negative allometric (b<3). The negative allometric growth shows that the fish are unable to maintain their shape in the specific season. It is suggested to stop the fishing activities for marine catfishes during the spawning and oral incubation period in pre-monsoon especially from February to mid-April to ensure sustainable fishing with a better growth dynamic. |
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