Reproductive Strategy of Chrysichthys nigrodigitatus (Lacepede, 1803) in a Natural Environment in the Nkam River, Littoral Cameroon
Joint Authors
Zebaze, Boddis Tsiguia
Zango, Paul
Tomedi, Minette Tabi Eyango
Tiogué, Claudine Tekounegning
Source
International Journal of Zoology
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-02-15
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
A study on the reproductive strategy of Chrysichthys nigrodigitatus was conducted from October 2015 to August 2016, in the Nkam River in Yabassi, Littoral Region of Cameroon.
For this purpose, 154 specimens of C.
nigrodigitatus with total mean weight of 829.96 ± 829.58 g and total mean length of 367 ± 156 mm collected from artisanal fishermen were used.
Twenty-nine (29) females at stage V of sexual maturity were selected for the evaluation of the fecundity.
It appears that the oogenesis in C.
nigrodigitatus is of an asynchronous type with multiple laying spread over a long period.
The gonadosomatic index (GSI) peaks in June (17.9 ± 7.1 for females and 1.06 ± 0.27 for males).
Hepatosomatic index (HSI) was higher in females than in males throughout the year.
The mean condition factor K was 1.07 ± 0.09%.
The breeding season occurred from April to October during the rainy season.
Gonadosomatic and hepatosomatic indices were positively correlated with rainfall, contrary to the K factor, which has been strongly and negatively correlated with this physical parameter.
The sex ratio of 1M: 1.5F was in favour of females, thus reflecting an “r” type reproductive strategy.
Absolute fecundity was estimated at 1374 ± 1022 oocytes for individuals of 107.3 ± 111.9 g mean weight.
Mean relative fecundity was 14 ± 3 oocytes/g of body weight.
It was recommended that future work focuses on the captivity of this species.
American Psychological Association (APA)
Tiogué, Claudine Tekounegning& Zebaze, Boddis Tsiguia& Zango, Paul& Tomedi, Minette Tabi Eyango. 2020. Reproductive Strategy of Chrysichthys nigrodigitatus (Lacepede, 1803) in a Natural Environment in the Nkam River, Littoral Cameroon. International Journal of Zoology،Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1174249
Modern Language Association (MLA)
Tiogué, Claudine Tekounegning…[et al.]. Reproductive Strategy of Chrysichthys nigrodigitatus (Lacepede, 1803) in a Natural Environment in the Nkam River, Littoral Cameroon. International Journal of Zoology No. 2020 (2020), pp.1-8.
https://search.emarefa.net/detail/BIM-1174249
American Medical Association (AMA)
Tiogué, Claudine Tekounegning& Zebaze, Boddis Tsiguia& Zango, Paul& Tomedi, Minette Tabi Eyango. Reproductive Strategy of Chrysichthys nigrodigitatus (Lacepede, 1803) in a Natural Environment in the Nkam River, Littoral Cameroon. International Journal of Zoology. 2020. Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1174249
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1174249