Fecundity of Sarotherodon galilaeus (Pisces: Cichlidae) in the Opa reservoir, Ile-Ife, Nigeria
The fish Sarotherodon galilaeus was collected in Opa reservoir, Obafemi Awolowo University, Ile-Ife, Nigeria. Sampling began in January, 1992 and extended until March, 1994. The fishing methods employed for collecting the 853 specimens were gillnetting and castnetting. Sex ratio was approximately 1:...
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Vicerractoría Investigación
2000-03-01
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doaj-7a9ecbf7d50049edb2cf369604eebcbd2020-11-24T22:09:57ZengVicerractoría InvestigaciónRevista de Biología Tropical0034-77442215-20752000-03-01481201204Fecundity of Sarotherodon galilaeus (Pisces: Cichlidae) in the Opa reservoir, Ile-Ife, NigeriaO.O. FawoleG.A.O. ArawomoThe fish Sarotherodon galilaeus was collected in Opa reservoir, Obafemi Awolowo University, Ile-Ife, Nigeria. Sampling began in January, 1992 and extended until March, 1994. The fishing methods employed for collecting the 853 specimens were gillnetting and castnetting. Sex ratio was approximately 1:1 (male: female). Length at maturity was 12.5 cm (males) and 11.7 cm (females). The fecundity was 1 048 ± 785 (604-2173, n= 117) with an egg diameter of 2.49 ± 1.81 (1.0 - 4.5, n = 117) mm. The gonado-somatic index was 0.33 ± 0.21 (0.09 - 1.34, n = 275) (males) and 1.88 ± 1.01 (0.33 - 6.19, n = 282) (females). The species breeds year-round (mature specimens occurred in samples collected throughout the 27-month study period). This fish is a biparental mouth booder.http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442000000100023Sarotherodon galilaeusReproductive biologyfecunditygonado-somatic indexbiparental |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
O.O. Fawole G.A.O. Arawomo |
spellingShingle |
O.O. Fawole G.A.O. Arawomo Fecundity of Sarotherodon galilaeus (Pisces: Cichlidae) in the Opa reservoir, Ile-Ife, Nigeria Revista de Biología Tropical Sarotherodon galilaeus Reproductive biology fecundity gonado-somatic index biparental |
author_facet |
O.O. Fawole G.A.O. Arawomo |
author_sort |
O.O. Fawole |
title |
Fecundity of Sarotherodon galilaeus (Pisces: Cichlidae) in the Opa reservoir, Ile-Ife, Nigeria |
title_short |
Fecundity of Sarotherodon galilaeus (Pisces: Cichlidae) in the Opa reservoir, Ile-Ife, Nigeria |
title_full |
Fecundity of Sarotherodon galilaeus (Pisces: Cichlidae) in the Opa reservoir, Ile-Ife, Nigeria |
title_fullStr |
Fecundity of Sarotherodon galilaeus (Pisces: Cichlidae) in the Opa reservoir, Ile-Ife, Nigeria |
title_full_unstemmed |
Fecundity of Sarotherodon galilaeus (Pisces: Cichlidae) in the Opa reservoir, Ile-Ife, Nigeria |
title_sort |
fecundity of sarotherodon galilaeus (pisces: cichlidae) in the opa reservoir, ile-ife, nigeria |
publisher |
Vicerractoría Investigación |
series |
Revista de Biología Tropical |
issn |
0034-7744 2215-2075 |
publishDate |
2000-03-01 |
description |
The fish Sarotherodon galilaeus was collected in Opa reservoir, Obafemi Awolowo University, Ile-Ife, Nigeria. Sampling began in January, 1992 and extended until March, 1994. The fishing methods employed for collecting the 853 specimens were gillnetting and castnetting. Sex ratio was approximately 1:1 (male: female). Length at maturity was 12.5 cm (males) and 11.7 cm (females). The fecundity was 1 048 ± 785 (604-2173, n= 117) with an egg diameter of 2.49 ± 1.81 (1.0 - 4.5, n = 117) mm. The gonado-somatic index was 0.33 ± 0.21 (0.09 - 1.34, n = 275) (males) and 1.88 ± 1.01 (0.33 - 6.19, n = 282) (females). The species breeds year-round (mature specimens occurred in samples collected throughout the 27-month study period). This fish is a biparental mouth booder. |
topic |
Sarotherodon galilaeus Reproductive biology fecundity gonado-somatic index biparental |
url |
http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442000000100023 |
work_keys_str_mv |
AT oofawole fecundityofsarotherodongalilaeuspiscescichlidaeintheopareservoirileifenigeria AT gaoarawomo fecundityofsarotherodongalilaeuspiscescichlidaeintheopareservoirileifenigeria |
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1725809843931971584 |