K. O Chukwu,
Akpotaire F,
- Researcher, Department of Fisheries and Aquatic Environment, Rivers State University, Port Harcourt, , Nigeria
- Researcher, Department of Fisheries and Aquatic Environment, Rivers State University, Port Harcourt, , Nigeria
Abstract
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The growth and food of Pellonula leonensis from the New Calabar River, Port Harcourt, Nigeria was studied, with the view of developing a proper feed that could meet the fish nutritional needs if reared in captivity. Analysis of growth using the length and weight measurements by applying regression analysis indicated that the fish had an allometric growth (2.6425 ± 0.078), and a condition factor of 0.8731. The fish’s food preferences were estimated using the frequency of occurrence and points methods.. Analysis of food preferences (index of food significance (IFS)) was categorized in two groups, 5.9- 7.5cm and 8.0 – 9.0 cm respectively. Temora sp (37.27%) was the most important food for smaller category while Penilia ovirrostris 23.09% was consumed most by the bigger group. The least important food for small and bigger groups were Podon polyphemoides and Temora sp respectively. Paracyclops sp was part of the contents of the fish stomach. The study further revealed the percentage index of food significance for the stomach content as follows; Evadne nordmanni recorded a value of 16.38 for the small group and 22,31 for the big group, while Penilia ovirrostris had a value of 25.05 and 23.09 for the small and bi categories respectively. Podon polyphemoides had 7.22 for the small group and 18.90 for the big group. Figures recorded for the copepods showed that Paracyclops sp was 14.09 and Temora sp 37.26 for the small category while the values were 18.90 and 16.79 respectively for the big group. In general all of the fish’s food was zooplanktons, as a result this fish may require a feed with high protein content if considered for aquaculture.
Keywords: Clupeids, Length, weight, Foods, Feeding.
K. O Chukwu, Akpotaire F. Growth and Stomach Content of Pellonula leonensis from New Calabar River, Rivers State Nigeria.. Research & Reviews : Journal of Veterinary Science and Technology. 2025; ():-.
K. O Chukwu, Akpotaire F. Growth and Stomach Content of Pellonula leonensis from New Calabar River, Rivers State Nigeria.. Research & Reviews : Journal of Veterinary Science and Technology. 2025; ():-. Available from: https://journals.stmjournals.com/rrjovst/article=2025/view=0
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| Volume | |
| Received | 03/12/2024 |
| Accepted | 10/01/2025 |
| Published | 11/01/2025 |