Fertility and food biology of Hemichromis fasciatus Peters: 1857 (Perciformes, Cichlidae) in the lower zone of the Tshopo river in Kisangani (Democratic Republic of the Congo)

Ngabo, Vianney Mulema; Mukabo, Gabriel Okito; Balagizi, Gabriel Baguma; Kalonda, Armand Amatcho; Nsila, Jacob Ndjaki; Busanga, Alidor Nkankonda

[ Quelques paramètres de la fécondité et la biologie alimentaire de Hemichromis fasciatus Peters 1857 (Perciformes, Cichlidae) dans la zone inférieure de la rivière Tshopo à Kisangani (République Démocratique du Congo) ]

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Volume 55, Issue 1, June 2021, Pages 1–14

Fertility and food biology of Hemichromis fasciatus Peters: 1857 (Perciformes, Cichlidae) in the lower zone of the Tshopo river in Kisangani (Democratic Republic of the Congo)

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@article{IJISR-21-007-02,
author = {Vianney Mulema Ngabo and Gabriel Okito Mukabo and Gabriel Baguma Balagizi and Armand Amatcho Kalonda and Jacob Ndjaki Nsila and Alidor Nkankonda Busanga},
title = {{Fertility and food biology of Hemichromis fasciatus Peters: 1857 (Perciformes, Cichlidae) in the lower zone of the Tshopo river in Kisangani (Democratic Republic of the Congo)}},
journal = {International Journal of Innovation and Scientific Research},
volume = {55},
year = {2021},
pages = {1--14},
issue = {1},
number = {1},
issn = {2028-9324},
url = {http://www.ijisr.issr-journals.org/abstract.php?article=IJISR-21-007-02},
abstract_html_url = {http://www.ijisr.issr-journals.org/abstract.php?article=IJISR-21-007-02},
pdf_url = {http://www.issr-journals.org/links/papers.php?journal=ijisr&application=pdf&article=IJISR-21-007-02},
document_type={Article},
source={www.issr-journals.org}
}

TY  - JOUR
ID  - 
TI  - Fertility and food biology of Hemichromis fasciatus Peters: 1857 (Perciformes, Cichlidae) in the lower zone of the Tshopo river in Kisangani (Democratic Republic of the Congo)
AU  - Vianney Mulema Ngabo
AU  - Gabriel Okito Mukabo
AU  - Gabriel Baguma Balagizi
AU  - Armand Amatcho Kalonda
AU  - Jacob Ndjaki Nsila
AU  - Alidor Nkankonda Busanga
PY  - 2021
VL  - 55
IS  - 1
SP  - 1
EP  - 14
JO  - International Journal of Innovation and Scientific Research
T2  - International Journal of Innovation and Scientific Research
SN  - 20289324
UR  - http://www.ijisr.issr-journals.org/abstract.php?article=IJISR-21-007-02
AB  - This article analyzes the fertility and food biology of H. fasciatus Peters, 1857 from the lower zone of the Tshopo river in Kisangani (DR Congo) so as to highlight, on the one hand, the fertility rate of this species, the length-weight relationship and the growth of gonads during the reproductive cycle at all the sites considered; on the other hand, determine the quality and quantity of the diet of this species according to size and sex. Sampling took place in November 2016, and from March 2017 to May 2018 In total, 100 specimens (85 upstream and 15 downstream of the hydroelectric dam) of size varying between 55.7-188.8 cm were captured at using two batteries of eight monofilament gillnets of 8, 10, 12, 15, 20, 25, 30 and mm between nodes. Analysis of the results obtained leads to the conclusion that the H. fasciatus species from the Tshopo River is invertivorous (intestinal coefficient = 0.46) with an opportunistic tendency, feeding mainly on animal and plant debris. This diet varied according to the sampling sites, the season, the sex and the stage of development of the individuals examined. The evolution of the gonado-somatic ratio upstream of the hydroelectric dam of the Tshopo river showed a peak for females 3.45 (n = 46) and for males 0.66 (n = 39); and downstream a peak is observed in females 5.86 (n = 8) and for males 0.52 (n = 7). The estimated absolute fertility ranged from 506 to 1,430 oocytes with an average of 817.18 oocytes and the relative fertility ranged from 20,440.95 to 131,433.82 kg-1 oocytes with an average of 48,932.30 kg-1.
ER  -

TY  - JOUR
ID  - 
TI  - Fertility and food biology of Hemichromis fasciatus Peters: 1857 (Perciformes, Cichlidae) in the lower zone of the Tshopo river in Kisangani (Democratic Republic of the Congo)
AU  - Vianney Mulema Ngabo
AU  - Gabriel Okito Mukabo
AU  - Gabriel Baguma Balagizi
AU  - Armand Amatcho Kalonda
AU  - Jacob Ndjaki Nsila
AU  - Alidor Nkankonda Busanga
PY  - 2021
VL  - 55
IS  - 1
SP  - 1
EP  - 14
JO  - International Journal of Innovation and Scientific Research
SN  - 20289324
AB  - 
This article analyzes the fertility and food biology of H. fasciatus Peters, 1857 from the lower zone of the Tshopo river in Kisangani (DR Congo) so as to highlight, on the one hand, the fertility rate of this species, the length-weight relationship and the growth of gonads during the reproductive cycle at all the sites considered; on the other hand, determine the quality and quantity of the diet of this species according to size and sex. Sampling took place in November 2016, and from March 2017 to May 2018 In total, 100 specimens (85 upstream and 15 downstream of the hydroelectric dam) of size varying between 55.7-188.8 cm were captured at using two batteries of eight monofilament gillnets of 8, 10, 12, 15, 20, 25, 30 and mm between nodes. Analysis of the results obtained leads to the conclusion that the H. fasciatus species from the Tshopo River is invertivorous (intestinal coefficient = 0.46) with an opportunistic tendency, feeding mainly on animal and plant debris. This diet varied according to the sampling sites, the season, the sex and the stage of development of the individuals examined. The evolution of the gonado-somatic ratio upstream of the hydroelectric dam of the Tshopo river showed a peak for females 3.45 (n = 46) and for males 0.66 (n = 39); and downstream a peak is observed in females 5.86 (n = 8) and for males 0.52 (n = 7). The estimated absolute fertility ranged from 506 to 1,430 oocytes with an average of 817.18 oocytes and the relative fertility ranged from 20,440.95 to 131,433.82 kg-1 oocytes with an average of 48,932.30 kg-1.
ER  -

RT Journal Article
ID IJISR-21-007-02
A1 Vianney Mulema Ngabo
A1 Gabriel Okito Mukabo
A1 Gabriel Baguma Balagizi
A1 Armand Amatcho Kalonda
A1 Jacob Ndjaki Nsila
A1 Alidor Nkankonda Busanga
YR 2021
T1 Fertility and food biology of Hemichromis fasciatus Peters: 1857 (Perciformes, Cichlidae) in the lower zone of the Tshopo river in Kisangani (Democratic Republic of the Congo)
JF International Journal of Innovation and Scientific Research

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Vianney Mulema Ngabo¹, Gabriel Okito Mukabo², Gabriel Baguma Balagizi³, Armand Amatcho Kalonda⁴, Jacob Ndjaki Nsila⁵, and Alidor Nkankonda Busanga⁶

¹ Département d’Hydrobiologie, Faculté de Sciences, Université de Kisangani, B.P. 2012 Kisangani, RD Congo
² Département de Biologie, Faculté de Sciences, Université Officielle de Bukavu, B.P. 570 Bukavu, Sud-Kivu, RD Congo
³ Département d’Hydrobiologie, Faculté de Sciences, Université de Kisangani, B.P. 2012 Kisangani, RD Congo
⁴ Département d’Hydrobiologie, Faculté de Sciences, Université de Kisangani, B.P. 2012 Kisangani, RD Congo
⁵ Département d’Hydrobiologie, Faculté de Sciences, Université de Kisangani, B.P. 2012 Kisangani, RD Congo
⁶ Département d’Hydrobiologie, Faculté de Sciences, Université de Kisangani, B.P. 2012 Kisangani, RD Congo

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Fertility and food biology of Hemichromis fasciatus Peters: 1857 (Perciformes, Cichlidae) in the lower zone of the Tshopo river in Kisangani (Democratic Republic of the Congo)