Embryonic and larvae development of reciprocal crosses between Pangasianodon hypophthalmus (Sauvage, 1878) and Clarias gariepinus (Burchell, 1822)
The egg and larval development of reciprocal crosses of Pangasianodon hypophthalmus (Sauvage, 1878) and Clarias gariepinus (Burchell, 1822) were studied under laboratory conditions. Crosses between ♀C. gariepinus × ♂P. hypophthalmus (Clariothalmus) and ♀P. hypophthalmus × ♂C. gariepinus (Pangapinus)...
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Elsevier
2017-12-01
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| Series: | Egyptian Journal of Aquatic Research |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1687428517300559 |
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| author | V.T. Okomoda I.C.C. Koh A. Hassan T. Amornsakun M.S. Shahreza |
| author_facet | V.T. Okomoda I.C.C. Koh A. Hassan T. Amornsakun M.S. Shahreza |
| author_sort | V.T. Okomoda |
| collection | DOAJ |
| description | The egg and larval development of reciprocal crosses of Pangasianodon hypophthalmus (Sauvage, 1878) and Clarias gariepinus (Burchell, 1822) were studied under laboratory conditions. Crosses between ♀C. gariepinus × ♂P. hypophthalmus (Clariothalmus) and ♀P. hypophthalmus × ♂C. gariepinus (Pangapinus) had embryonic stages similar to those of the pure sib, however, unequal cell cleavages were notable in the early development of both crosses, hence, leading to different forms of deformities. The critical stage where highest mortality occurred during the embryogenesis was the somite (21.68%) and hatching (48.1%) stages (respectively for the Clariothalmus and Pangapinus). However, both crosses produced viable larvae (60.21 vs 13.20% hatchability respectively), which survived (30.3 vs 2.1% respectively) until the end of the study (2 weeks). The external morphological features of the larvae were completely formed by the 14th day after hatching. The body forms of the crosses at this time were either phenotypic intermediary of the parent species (92% of Clariothalmus) or indistinguishable from the female parent (all Pangapinus and 8% of the Clariothalmus). This study thus laid the groundwork for further comparative studies on hybrid performance and characterization. |
| first_indexed | 2024-12-10T15:14:20Z |
| format | Article |
| id | doaj.art-8202941fae6a4eb1a0d0746f1c32a99b |
| institution | Directory Open Access Journal |
| issn | 1687-4285 |
| language | English |
| last_indexed | 2024-12-10T15:14:20Z |
| publishDate | 2017-12-01 |
| publisher | Elsevier |
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| series | Egyptian Journal of Aquatic Research |
| spelling | doaj.art-8202941fae6a4eb1a0d0746f1c32a99b2022-12-22T01:43:50ZengElsevierEgyptian Journal of Aquatic Research1687-42852017-12-0143432132710.1016/j.ejar.2017.10.005Embryonic and larvae development of reciprocal crosses between Pangasianodon hypophthalmus (Sauvage, 1878) and Clarias gariepinus (Burchell, 1822)V.T. Okomoda0I.C.C. Koh1A. Hassan2T. Amornsakun3M.S. Shahreza4Department of Fisheries and Aquaculture, University of Agriculture, Makurdi, NigeriaSchool of Fisheries and Aquaculture Sciences, Universiti Malaysia Terengganu, MalaysiaSchool of Fisheries and Aquaculture Sciences, Universiti Malaysia Terengganu, MalaysiaDepartment of Technology and Industries, Prince of Songkla University, Pattani Campus, ThailandSchool of Fisheries and Aquaculture Sciences, Universiti Malaysia Terengganu, MalaysiaThe egg and larval development of reciprocal crosses of Pangasianodon hypophthalmus (Sauvage, 1878) and Clarias gariepinus (Burchell, 1822) were studied under laboratory conditions. Crosses between ♀C. gariepinus × ♂P. hypophthalmus (Clariothalmus) and ♀P. hypophthalmus × ♂C. gariepinus (Pangapinus) had embryonic stages similar to those of the pure sib, however, unequal cell cleavages were notable in the early development of both crosses, hence, leading to different forms of deformities. The critical stage where highest mortality occurred during the embryogenesis was the somite (21.68%) and hatching (48.1%) stages (respectively for the Clariothalmus and Pangapinus). However, both crosses produced viable larvae (60.21 vs 13.20% hatchability respectively), which survived (30.3 vs 2.1% respectively) until the end of the study (2 weeks). The external morphological features of the larvae were completely formed by the 14th day after hatching. The body forms of the crosses at this time were either phenotypic intermediary of the parent species (92% of Clariothalmus) or indistinguishable from the female parent (all Pangapinus and 8% of the Clariothalmus). This study thus laid the groundwork for further comparative studies on hybrid performance and characterization.http://www.sciencedirect.com/science/article/pii/S1687428517300559African catfishAsian catfishHybridsMorphotypeOntogenic development |
| spellingShingle | V.T. Okomoda I.C.C. Koh A. Hassan T. Amornsakun M.S. Shahreza Embryonic and larvae development of reciprocal crosses between Pangasianodon hypophthalmus (Sauvage, 1878) and Clarias gariepinus (Burchell, 1822) Egyptian Journal of Aquatic Research African catfish Asian catfish Hybrids Morphotype Ontogenic development |
| title | Embryonic and larvae development of reciprocal crosses between Pangasianodon hypophthalmus (Sauvage, 1878) and Clarias gariepinus (Burchell, 1822) |
| title_full | Embryonic and larvae development of reciprocal crosses between Pangasianodon hypophthalmus (Sauvage, 1878) and Clarias gariepinus (Burchell, 1822) |
| title_fullStr | Embryonic and larvae development of reciprocal crosses between Pangasianodon hypophthalmus (Sauvage, 1878) and Clarias gariepinus (Burchell, 1822) |
| title_full_unstemmed | Embryonic and larvae development of reciprocal crosses between Pangasianodon hypophthalmus (Sauvage, 1878) and Clarias gariepinus (Burchell, 1822) |
| title_short | Embryonic and larvae development of reciprocal crosses between Pangasianodon hypophthalmus (Sauvage, 1878) and Clarias gariepinus (Burchell, 1822) |
| title_sort | embryonic and larvae development of reciprocal crosses between pangasianodon hypophthalmus sauvage 1878 and clarias gariepinus burchell 1822 |
| topic | African catfish Asian catfish Hybrids Morphotype Ontogenic development |
| url | http://www.sciencedirect.com/science/article/pii/S1687428517300559 |
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