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Ovarian histology and reproductive health of short mackerel,Rastrelliger brachysoma (Bleeker, 1851), as threatened marine fish in Thailand |
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| รหัสดีโอไอ | |
| Creator | 1. Sinlapachai Senarat 2. Wannee Jiraungkoorskul 3. Jes Kettratad |
| Title | Ovarian histology and reproductive health of short mackerel,Rastrelliger brachysoma (Bleeker, 1851), as threatened marine fish in Thailand |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2560 |
| Journal Title | Songklanakarin Journal of Science and Technology (SJST) |
| Journal Vol. | 39 |
| Journal No. | 2 |
| Page no. | 225 |
| Keyword | ovary,histopathology,Rastrelliger brachysoma,reproductive failure |
| ISSN | 0125-3395 |
| Abstract | The ovarian structure and reproductive health of short mackerel, Rastrelliger brachysoma in the upper Gulf ofThailand from non-breeding (October to November 2013) and breeding seasons (December 2013 to February 2014), wereexamined by histological and histochemical techniques. The results revealed that the ovary in this species was enclosed bythe tunica albuginea. It was considered as an asynchronous type, which could be classified into seven stages based on itshistological characteristics. These seven stages were oogonium, chromatin nucleolar, perinucleolar, oil droplet and corticalalveolar, early, late and post vitellogenic stages. During the oogenic processes, the change and characterization of inclusionsincluding lipids, cortical alveoli and yolk granules were detected by histolochemical techniques. The ovarian histopathologyin R brachysoma was detected. This includes ovarian degeneration, ovarian atrophy and atresia in different stages (oogonia,previtellogenic stages and vitellogenic stages) as well as melano-magcrophage centers. Atretic follicles and ovarian atrophywere also observed and could negatively affect the reproductive health of the species, which could lead to populationdeclines in R. brachysoma as well as threaten other marine fishes connected through the food web in Thailand. |
