Citation
Getahun Abebe, . and Kebede Mathewos Temesgen, . and Lemma Brook, . Reproductive biology of commercially important fish species in Lake Langeno Ethiopia. pp. 319-339. ISSN 0116-6514
Abstract
The study on the reproductive biology of commercially important fish species in Lake Langeno Ethiopia was conducted from March 2015 to February 2016. Fish samples were collected from different sampling sites by different mesh size of gillnets and long lines. A total of 4207 fish specimens were collected. The peak breeding time observed was April-June May-July June-July and MarchMay for Oreochromis niloticus (Linnaeus 1758) Clarias gariepinus (Burchell 1822) Labeobarbus intermedius (Rppell 1835) and Cyprinus carpio Linnaeus 1758 respectively. Their respective L50 were 16.4 cm and 15.8 cm TL 28.5 cm and 29.5 cm TL 30.5 cm and 29.5 cm FL and 28.2 cm and 27.6 cm FL for females and males respectively. The mean fecundities of these fish species were 463.83 114 141466 40982 3055 2234 and 105631 46680 eggs.fish-1 respectively. The relationship between fecundity and total or/fork length were curvilinear for all fish species while the relationship between fecundity and total weight were linear for O. niloticus L. intermedius and C. carpio and curvilinear for C. gariepinus (r2 90). The result showed a significant temporal variation of GSI for all fish species (ANOVA P 0.05). It also showed the domination of small-sized fishes with the small L50 of most fishes. Therefore effective management is needed to improve the situation of fishes in the lake.
Download File
Full text available from:
Official URL: www.asianfisheriessociety.org/publication/download...
|
Abstract
The study on the reproductive biology of commercially important fish species in Lake Langeno Ethiopia was conducted from March 2015 to February 2016. Fish samples were collected from different sampling sites by different mesh size of gillnets and long lines. A total of 4207 fish specimens were collected. The peak breeding time observed was April-June May-July June-July and MarchMay for Oreochromis niloticus (Linnaeus 1758) Clarias gariepinus (Burchell 1822) Labeobarbus intermedius (Rppell 1835) and Cyprinus carpio Linnaeus 1758 respectively. Their respective L50 were 16.4 cm and 15.8 cm TL 28.5 cm and 29.5 cm TL 30.5 cm and 29.5 cm FL and 28.2 cm and 27.6 cm FL for females and males respectively. The mean fecundities of these fish species were 463.83 114 141466 40982 3055 2234 and 105631 46680 eggs.fish-1 respectively. The relationship between fecundity and total or/fork length were curvilinear for all fish species while the relationship between fecundity and total weight were linear for O. niloticus L. intermedius and C. carpio and curvilinear for C. gariepinus (r2 90). The result showed a significant temporal variation of GSI for all fish species (ANOVA P 0.05). It also showed the domination of small-sized fishes with the small L50 of most fishes. Therefore effective management is needed to improve the situation of fishes in the lake.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Fishes |
| AGROVOC Term: | Species |
| AGROVOC Term: | Lakes |
| AGROVOC Term: | Oreochromis niloticus |
| AGROVOC Term: | Clarias gariepinus |
| AGROVOC Term: | Cyprinus carpio |
| AGROVOC Term: | Sampling |
| AGROVOC Term: | Laboratory experimentation |
| AGROVOC Term: | Identification |
| AGROVOC Term: | Sex determination (identification) |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 06:29 |
| URI: | http://webagris.upm.edu.my/id/eprint/24928 |
Actions (login required)
 |
View Item |
