Differentiated Gonochorism in Nile Perch Lates Niloticus from Lake Victoria, Uganda

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dc.contributor.authorBasiita, R.K.
dc.contributor.authorAruho, C.
dc.contributor.authorKahwa, D.
dc.contributor.authorNyatia, E.
dc.contributor.authorBugenyi, F.W.
dc.contributor.authorRutaisire, J.
dc.date.accessioned2023-02-17T19:44:37Z
dc.date.available2023-02-17T19:44:37Z
dc.date.issued2011
dc.description.abstractGonadal development and structure were examined in 317 Nile perch, Lates niloticus, of 4 to 157 cm SL taken from Lake Victoria, Uganda, in 2005–2006. Macroscopic and histological investigation showed a differentiated gonochoristic pattern, with no juvenile intersexuality. Oogonial cells (9.8 ± 3.0 μm) developed through six distinct stages: chromatin nucleolar oocyte (16.2 ± 3.3 μm), perinucleolar oocyte (33.8 ± 12.1 μm), late perinucleolar oocyte (74.8 ± 16.5 μm), cortical alveolar oocyte (122.6 ± 38.8 μm), secondary oocyte (260.9 ± 61.2 μm) and tertiary oocyte (475.5 ± 70.7 μm). L. niloticus was found to be an asynchronous spawner. The collection of female brood fish for induced spawning should aim at fish with an oocyte size of 475.5 ± 70.7 μm. Four main developmental stages were identified in the testis: spermatogonia (A and B), primary and secondary spermatocytes, spermatids and spermatozoa. Testicular structure conformed to the lobular and cystic type. Copious amounts of sperm were exuded from ripe males when slight pressure was applied on the belly. Milt could therefore be obtained by stripping.en_US
dc.identifier.citationBasiita, R. K., Aruho, C., Kahwa, D., Nyatia, E., Bugenyi, F. W., & Rutaisire, J. (2011). Differentiated gonochorism in Nile perch Lates niloticus from Lake Victoria, Uganda. African Journal of Aquatic Science, 36(1), 89-96.https://doi.org/10.2989/16085914.2011.559694en_US
dc.identifier.issn1727–9364
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/7875
dc.language.isoenen_US
dc.publisherUganda. African Journal of Aquatic Scienceen_US
dc.subjectgonadalen_US
dc.subjectdevelopmenten_US
dc.subjectLatidaeen_US
dc.subjectoogenesisen_US
dc.subjectspermatogenesisen_US
dc.titleDifferentiated Gonochorism in Nile Perch Lates Niloticus from Lake Victoria, Ugandaen_US
dc.typeArticleen_US
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