Fecundity, length and age at massive maturation of commercially important prawn species in the artisanal fishery of the Cross River Estuary, SE Nigeria
| Autor: | Francis M. Nwosu, S. Holzlöhner |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
geography Macrobrachium geography.geographical_feature_category Ecology Range (biology) Estuary 04 agricultural and veterinary sciences Biology biology.organism_classification Fecundity Fishery 03 medical and health sciences 030104 developmental biology Biological species Reproductive biology 040102 fisheries Prawn 0401 agriculture forestry and fisheries Cross river Animal Science and Zoology |
| Zdroj: | Zoology and Ecology. 26:100-103 |
| ISSN: | 2165-8013 2165-8005 |
| Popis: | Some aspects of the reproductive biology of the three dominant prawn species in the artisanal fishery of the Cross River Estuary, namely; Macrobrachium macrobrachion, M. vollenhovenii and M. equidens, were studied. At massive maturation (TLm in mm) the length of M. macrobrachion was 68.83 (CI: 66.63–71.10 mm) at the corresponding age of 6.61 (CI: 6.28–6.96) months. TLm of M. vollenhovenii was 106.74 (CI: 102.82–110.81) at the corresponding age of 7.42 (CI: 7.01–7.82) months, while TLm of M. equidens was 59.09 (CI: 57.50–60.72), at the age of 7.70 (CI: 7.39–8.03) months. The average fecundity of M. macrobrachion, M. vollenhovenii and M. equidens was 2490 (range 270–4710), 23,943 (range 1744–46,141), and 2359 (range 400–4318) eggs per female, respectively. The knowledge of the reproductive biology of these biological species is important for their cultivation and efficient management of their fisheries and ecosystem resources. |
| Databáze: | OpenAIRE |
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