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Feeding apparatus, digestive system structure, and gut contentsof Priapium fish, Neostethus lankesteri Regan 1916 |
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| รหัสดีโอไอ | |
| Creator | 1. Amphornphan Palasai 2. Phakorn Na Lampang 3. F. Gerald Plumley 4. Jes Kettratad 5. Sinlapachai Senarat 6. Niwat Kangwanrangsan 7. Wannee Jiraungkoorskul |
| Title | Feeding apparatus, digestive system structure, and gut contentsof Priapium fish, Neostethus lankesteri Regan 1916 |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2022 |
| Journal Title | Songklanakarin Journal of Science an Technology (SJST) |
| Journal Vol. | 44 |
| Journal No. | 3 |
| Page no. | 602-608 |
| Keyword | digestive system, feeding ecology, histology, Priapium fish, Thailand |
| URL Website | https://rdo.psu.ac.th/sjst/index.php |
| ISSN | 0125-3395 |
| Abstract | In this study, we examined the gut contents and morpho-histology of the digestive tract of Neostethus lankesteri Regan,1916 to examine habitat utilization. Thirty individuals of N. lankesteri were collected monthly from two sites: Pranburi Riverestuary (PRE) and Sirinart Rajini Mangrove Ecosystem Learning Center (SRMELC), during the Northeast and Southwestmonsoon season. Based on gut contents analysis of N. lankesteri, the primary food items were categorized as follows: diatoms,dinoflagellates, other microalgae, and zooplankton. The index of relative importance, IRI, showed that diatoms were a majorcomponent followed by zooplankton at the PRE site, whereas zooplankton was a major component followed by diatoms atSRMELC during the two seasons. Moreover, N. lankesteri had a superior mouth with canine teeth. The pharyngeal tooth plateswere numerous and canine shaped. The intestine coefficient of N. lankerteri was 0.55, which is consistent with omnivory.Histology of the digestive tract in N. lankesteri showed that they were stomachless, while the intestine consisted of three regions:anterior, middle, and posterior. Collectively, gut content and morpho-histological analyses from our studies indicated that N.lankesteria is an omnivore, feeding on multiple trophic levels depending on their availability. |
