Embryonic and larval development of river catfish Hemibagrus nemurus (Valenciennes, 1840).
The aim of this study was to characterize embryonic and larval developmental stages of the river catfish, Hemibagrus nemurus. Fertilized eggs were spherical, adhesive and demersal with a mean egg diameter of 1.5±0.3 mm. Seven embryonic periods were characterized for timing and features: zygote, clea...
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Academic Journals Inc
2013
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| Online Access: | http://psasir.upm.edu.my/id/eprint/29482/ http://psasir.upm.edu.my/id/eprint/29482/1/Embryonic%20and%20larval%20development%20of%20river%20catfish%20Hemibagrus%20nemurus.pdf |
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| author | Adebiyi, Fatimat Adenike Siraj, Siti Shapor Harmin, Sharr Azni Christianus, Annie |
| author_facet | Adebiyi, Fatimat Adenike Siraj, Siti Shapor Harmin, Sharr Azni Christianus, Annie |
| author_sort | Adebiyi, Fatimat Adenike |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The aim of this study was to characterize embryonic and larval developmental stages of the river catfish, Hemibagrus nemurus. Fertilized eggs were spherical, adhesive and demersal with a mean egg diameter of 1.5±0.3 mm. Seven embryonic periods were characterized for timing and features: zygote, cleavage, blastula, gastrula, segmentation, pharyngula and hatching. Mean hatch was 23±1 h post fertilization at 27°C. The newly hatched larvae measured 3.0±0.2 mm in total length. Morphogenesis was completed in a day. The yolk sac was completely absorbed in three days. H. nemurus has a short embryonic developmental period in comparison with other catfish species. The information obtained from this study will be useful for egg incubation and larval rearing during the culture of H. nemurus. |
| first_indexed | 2025-11-15T09:02:16Z |
| format | Article |
| id | upm-29482 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T09:02:16Z |
| publishDate | 2013 |
| publisher | Academic Journals Inc |
| recordtype | eprints |
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| spelling | upm-294822015-09-10T06:03:16Z http://psasir.upm.edu.my/id/eprint/29482/ Embryonic and larval development of river catfish Hemibagrus nemurus (Valenciennes, 1840). Adebiyi, Fatimat Adenike Siraj, Siti Shapor Harmin, Sharr Azni Christianus, Annie The aim of this study was to characterize embryonic and larval developmental stages of the river catfish, Hemibagrus nemurus. Fertilized eggs were spherical, adhesive and demersal with a mean egg diameter of 1.5±0.3 mm. Seven embryonic periods were characterized for timing and features: zygote, cleavage, blastula, gastrula, segmentation, pharyngula and hatching. Mean hatch was 23±1 h post fertilization at 27°C. The newly hatched larvae measured 3.0±0.2 mm in total length. Morphogenesis was completed in a day. The yolk sac was completely absorbed in three days. H. nemurus has a short embryonic developmental period in comparison with other catfish species. The information obtained from this study will be useful for egg incubation and larval rearing during the culture of H. nemurus. Academic Journals Inc 2013 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/29482/1/Embryonic%20and%20larval%20development%20of%20river%20catfish%20Hemibagrus%20nemurus.pdf Adebiyi, Fatimat Adenike and Siraj, Siti Shapor and Harmin, Sharr Azni and Christianus, Annie (2013) Embryonic and larval development of river catfish Hemibagrus nemurus (Valenciennes, 1840). Asian Journal of Animal and Veterinary Advances, 8 (2). pp. 237-246. ISSN 1683-9919 http://scialert.net/archivedetails.php?issn=1683-9919&issueno=54 10.3923/ajava.2013.237.246 English |
| spellingShingle | Adebiyi, Fatimat Adenike Siraj, Siti Shapor Harmin, Sharr Azni Christianus, Annie Embryonic and larval development of river catfish Hemibagrus nemurus (Valenciennes, 1840). |
| title | Embryonic and larval development of river catfish Hemibagrus nemurus (Valenciennes, 1840). |
| title_full | Embryonic and larval development of river catfish Hemibagrus nemurus (Valenciennes, 1840). |
| title_fullStr | Embryonic and larval development of river catfish Hemibagrus nemurus (Valenciennes, 1840). |
| title_full_unstemmed | Embryonic and larval development of river catfish Hemibagrus nemurus (Valenciennes, 1840). |
| title_short | Embryonic and larval development of river catfish Hemibagrus nemurus (Valenciennes, 1840). |
| title_sort | embryonic and larval development of river catfish hemibagrus nemurus (valenciennes, 1840). |
| url | http://psasir.upm.edu.my/id/eprint/29482/ http://psasir.upm.edu.my/id/eprint/29482/ http://psasir.upm.edu.my/id/eprint/29482/ http://psasir.upm.edu.my/id/eprint/29482/1/Embryonic%20and%20larval%20development%20of%20river%20catfish%20Hemibagrus%20nemurus.pdf |