| Autor: |
Anouar OUIZGANE, Sana FARID, Fatima Zahra MAJDOUBI, Mohammed DROUSSI, Mustapha HASNAOUI |
| Jazyk: |
English<br />French |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Journal of Water and Environmental Sciences, Vol 1, Iss COP22, Pp 123-126 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
2509-0445 |
| Popis: |
This work consists to evaluate the effect of the temperature on the growth and feeding behavior of the largemouth bass (Micropterus salmoides) which is a warm-water fish. It was conducted at the hatchery of Deroua fisheries Station. Each of a six circular tanks of 1.5 m3 of water received five individuals of largemouth bass with a weight ranging between 64 g and 185 g. Two water temperature ranges were selected (16-18°C and 21-24°C) for this experiment. The second range was thermally regulated using a central water heater system. The results showed that: • The variation of temperature has a highly significant effect on the growth of largemouth bass (α= 0,003). In effect, an increase in temperature of 3°C doubles the daily average growth of largemouth bass. Thus, the average daily growth rate at a temperature of 16-18°C was 0,935 g/day whereas it has reached 2.11 g/day at a temperature of 21- 24°C. • The duration of consumption of the same quantity of forage fish by the Black bass at temperature of 16-18°C is higher than that at a temperature of 21 to 24°C. • The largemouth bass consumes daily an average quantity of 5,1% of its fresh body weight at a temperature of 16-18°C, Whereas its feeding needs reach 8.7% of its fresh body weight at a temperature of 21-24 ° C. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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