Gonadal recrudescence and induced spawning in Barbus altianalis

Justus Rutaisire; Berta Levavi-Sivan; Cassius Aruho; Constantine Chobet Ondhoro

doi:10.1111/are.12213

Gonadal recrudescence and induced spawning in Barbus altianalis

Justus Rutaisire, Berta Levavi-Sivan, Cassius Aruho^*, Constantine Chobet Ondhoro

^*Corresponding author for this work

Department of Animal Sciences

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Gonadal recrudescence in Barbus altianalis from River Nile, Jinja (33°05E; 0°45N) Uganda was studied prior to induced spawning. Oocytes in B. altianalis were found to develop in cohorts suggesting batch spawning throughout the year with pronounced spawning activities coinciding with rainfall peaks of April and September. There was a strong positive correlation between rainfall and gonadosomatic index (r_S = 0.75, P = 0.008). B. altianalis had low fecundity (6.0 ± 2.0 per gram) and large-sized eggs (2.97 ± 0.1 mm). Induced spawning was successful with exogenous hormones and water current. Results from this study suggested that total striping may not be appropriate, but larger eggs would confer high survival of offsprings under optimal conditions. The success registered in induced spawning of B. altianalis provides a breakthrough in seed production for multiplication and culture of this economically important fish species.

Original language	English
Pages (from-to)	669-678
Number of pages	10
Journal	Aquaculture Research
Volume	46
Issue number	3
DOIs	https://doi.org/10.1111/are.12213
State	Published - 1 Mar 2015

Bibliographical note

Publisher Copyright:
© 2013 John Wiley & Sons Ltd.

Keywords

Barbus altianalis
Gonado recrudescence
Induced spawning

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1111/are.12213

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title = "Gonadal recrudescence and induced spawning in Barbus altianalis",

abstract = "Gonadal recrudescence in Barbus altianalis from River Nile, Jinja (33°05E; 0°45N) Uganda was studied prior to induced spawning. Oocytes in B. altianalis were found to develop in cohorts suggesting batch spawning throughout the year with pronounced spawning activities coinciding with rainfall peaks of April and September. There was a strong positive correlation between rainfall and gonadosomatic index (rS = 0.75, P = 0.008). B. altianalis had low fecundity (6.0 ± 2.0 per gram) and large-sized eggs (2.97 ± 0.1 mm). Induced spawning was successful with exogenous hormones and water current. Results from this study suggested that total striping may not be appropriate, but larger eggs would confer high survival of offsprings under optimal conditions. The success registered in induced spawning of B. altianalis provides a breakthrough in seed production for multiplication and culture of this economically important fish species.",

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author = "Justus Rutaisire and Berta Levavi-Sivan and Cassius Aruho and Ondhoro, {Constantine Chobet}",

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doi = "10.1111/are.12213",

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AU - Levavi-Sivan, Berta

AU - Aruho, Cassius

AU - Ondhoro, Constantine Chobet

PY - 2015/3/1

Y1 - 2015/3/1

N2 - Gonadal recrudescence in Barbus altianalis from River Nile, Jinja (33°05E; 0°45N) Uganda was studied prior to induced spawning. Oocytes in B. altianalis were found to develop in cohorts suggesting batch spawning throughout the year with pronounced spawning activities coinciding with rainfall peaks of April and September. There was a strong positive correlation between rainfall and gonadosomatic index (rS = 0.75, P = 0.008). B. altianalis had low fecundity (6.0 ± 2.0 per gram) and large-sized eggs (2.97 ± 0.1 mm). Induced spawning was successful with exogenous hormones and water current. Results from this study suggested that total striping may not be appropriate, but larger eggs would confer high survival of offsprings under optimal conditions. The success registered in induced spawning of B. altianalis provides a breakthrough in seed production for multiplication and culture of this economically important fish species.

AB - Gonadal recrudescence in Barbus altianalis from River Nile, Jinja (33°05E; 0°45N) Uganda was studied prior to induced spawning. Oocytes in B. altianalis were found to develop in cohorts suggesting batch spawning throughout the year with pronounced spawning activities coinciding with rainfall peaks of April and September. There was a strong positive correlation between rainfall and gonadosomatic index (rS = 0.75, P = 0.008). B. altianalis had low fecundity (6.0 ± 2.0 per gram) and large-sized eggs (2.97 ± 0.1 mm). Induced spawning was successful with exogenous hormones and water current. Results from this study suggested that total striping may not be appropriate, but larger eggs would confer high survival of offsprings under optimal conditions. The success registered in induced spawning of B. altianalis provides a breakthrough in seed production for multiplication and culture of this economically important fish species.

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Gonadal recrudescence and induced spawning in Barbus altianalis

Abstract

Bibliographical note

Keywords

UN SDGs

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