Some aspects of the ecology and reproduction of the small pelagic cyprinid, Rastrineobola argentea in Lake Victoria
This study concentrated on the reproductive biology of the small pelagic cyprinid Rastrineobola argentea. The results indicate that this fish is an inshore spawning species, which agrees with other recent studies. It was also found that in areas where fishing intensity was likely to be relatively high, the size at first maturity of R. argentea was reduced, which is likely to be an effect of the fish altering its reproductive strategy according to life history theory. The CPUE results showed a general trend of decreasing with distance from shore, however areas less than one kilometer from the shore were not sampled. Evidence was also found suggesting that the cestode parasite, Ligula intestinalis had an adverse effect on the maturation and fecundity of R. argentea. Some management options concerning the findings in this study are also briefly discussed. (PDF has 82 pages)
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Format: | monograph biblioteca |
Language: | English |
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Lake Victoria Fisheries Research Project
2001
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Subjects: | Fisheries, Biology, Africa, Lake Victoria, catch effort, fecundity, lake fisheries, reproduction, size distribution, spawning populations, Rastrineobola argentea, |
Online Access: | http://hdl.handle.net/1834/21389 |
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dig-aquadocs-1834-213892021-06-29T01:46:49Z Some aspects of the ecology and reproduction of the small pelagic cyprinid, Rastrineobola argentea in Lake Victoria Marshall, J.R. Fisheries Biology Africa Lake Victoria catch effort fecundity lake fisheries reproduction size distribution spawning populations Rastrineobola argentea This study concentrated on the reproductive biology of the small pelagic cyprinid Rastrineobola argentea. The results indicate that this fish is an inshore spawning species, which agrees with other recent studies. It was also found that in areas where fishing intensity was likely to be relatively high, the size at first maturity of R. argentea was reduced, which is likely to be an effect of the fish altering its reproductive strategy according to life history theory. The CPUE results showed a general trend of decreasing with distance from shore, however areas less than one kilometer from the shore were not sampled. Evidence was also found suggesting that the cestode parasite, Ligula intestinalis had an adverse effect on the maturation and fecundity of R. argentea. Some management options concerning the findings in this study are also briefly discussed. (PDF has 82 pages) Republic of Kenya Republic of Uganda United Republic of Tanzania European Development Fund (7ACP-RPR-372) Lake Victoria Fisheries Research Project Phase II LVFRP/TECH/01/12 2021-06-24T15:55:02Z 2021-06-24T15:55:02Z 2001 monograph http://hdl.handle.net/1834/21389 en LVFRP Technical Document http://www.lvfo.org/ application/pdf application/pdf 1-71 Lake Victoria Fisheries Research Project Jinja, Uganda http://aquaticcommons.org/id/eprint/3697 424 2011-09-29 17:02:37 3697 Lake Victoria Fisheries Organization |
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Fisheries Biology Africa Lake Victoria catch effort fecundity lake fisheries reproduction size distribution spawning populations Rastrineobola argentea Fisheries Biology Africa Lake Victoria catch effort fecundity lake fisheries reproduction size distribution spawning populations Rastrineobola argentea |
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Fisheries Biology Africa Lake Victoria catch effort fecundity lake fisheries reproduction size distribution spawning populations Rastrineobola argentea Fisheries Biology Africa Lake Victoria catch effort fecundity lake fisheries reproduction size distribution spawning populations Rastrineobola argentea Marshall, J.R. Some aspects of the ecology and reproduction of the small pelagic cyprinid, Rastrineobola argentea in Lake Victoria |
description |
This study concentrated on the reproductive biology of the small pelagic cyprinid Rastrineobola argentea. The results indicate that this fish is an inshore spawning species, which agrees with other recent studies. It was also found that in areas where fishing intensity was likely to be relatively high, the size at first maturity of R. argentea was reduced, which is likely to be an effect of the fish altering its reproductive strategy according to life history theory. The CPUE results showed a general trend of decreasing with distance from shore, however areas less than one kilometer from the shore were not sampled. Evidence was also found suggesting that the cestode parasite, Ligula intestinalis had an adverse effect on the maturation and fecundity of R. argentea. Some management options concerning the findings in this study are also briefly discussed. (PDF has 82 pages) |
format |
monograph |
topic_facet |
Fisheries Biology Africa Lake Victoria catch effort fecundity lake fisheries reproduction size distribution spawning populations Rastrineobola argentea |
author |
Marshall, J.R. |
author_facet |
Marshall, J.R. |
author_sort |
Marshall, J.R. |
title |
Some aspects of the ecology and reproduction of the small pelagic cyprinid, Rastrineobola argentea in Lake Victoria |
title_short |
Some aspects of the ecology and reproduction of the small pelagic cyprinid, Rastrineobola argentea in Lake Victoria |
title_full |
Some aspects of the ecology and reproduction of the small pelagic cyprinid, Rastrineobola argentea in Lake Victoria |
title_fullStr |
Some aspects of the ecology and reproduction of the small pelagic cyprinid, Rastrineobola argentea in Lake Victoria |
title_full_unstemmed |
Some aspects of the ecology and reproduction of the small pelagic cyprinid, Rastrineobola argentea in Lake Victoria |
title_sort |
some aspects of the ecology and reproduction of the small pelagic cyprinid, rastrineobola argentea in lake victoria |
publisher |
Lake Victoria Fisheries Research Project |
publishDate |
2001 |
url |
http://hdl.handle.net/1834/21389 |
work_keys_str_mv |
AT marshalljr someaspectsoftheecologyandreproductionofthesmallpelagiccyprinidrastrineobolaargenteainlakevictoria |
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1756077490988646400 |