Sense organs development in larvae of the Sultan fish Leptobarbus hoevenii

At hatching, the sense organs of the Leptobarbus hoevenii larvae were morphologically immature. However, these sense organs had developed and became functional (including first occurrence of the intra-oral taste buds) to facilitate the larval first exogenous feeding at 3 days post-hatching (dph), be...

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Bibliographic Details
Published in:Fisheries science 2022-07, Vol.88 (4), p.461-475
Main Authors: Lim, Leong-Seng, Au, Hsein-Loong, Amornsakun, Thumronk, Musikarun, Poramat, Liew, Hon Jung, Tan, Kian Ann, Mohamad Lal, Mohammad Tamrin, Mukai, Yukinori, Kawamura, Gunzo
Format: Article
Language:English
Subjects:
Aquaculture
Behavior
Biomedical and Life Sciences
Body organs
Ear
Ears
Fins
Fish
Fish & Wildlife Biology & Management
Fish hatcheries
Fisheries
Food
Food Science
Freshwater & Marine Ecology
Hatching
Larvae
Larval development
Leptobarbus hoevenii
Life history
Life Sciences
Metamorphosis
Notochord
Olfaction
Olfactory organs
Original Article
Proteins
R&D
Research & development
Science
Sense organs
Taste buds
Yolk sac
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Summary:At hatching, the sense organs of the Leptobarbus hoevenii larvae were morphologically immature. However, these sense organs had developed and became functional (including first occurrence of the intra-oral taste buds) to facilitate the larval first exogenous feeding at 3 days post-hatching (dph), before the yolk sac was completely absorbed at 5 dph. During the larval metamorphosis period (5–30 dph), the larval notochord flexion and fin development had completed. The retinal rods appeared at 5 dph, and its number increased with larval growth. The lagena was formed and the inner ears were fully calcified at 15 dph, indicating that the inner ears were completely developed. The olfactory organ development was completed when the anterior and posterior pits were formed at 30 dph. Canal neuromast was first found in the 30 dph L. hoevenii head portion, but none was observed at its trunk. Further examination of the elder stage (> 30 dph) of L. hoevenii is necessary to confirm the timing of trunk canal neuromast development. These findings have provided new biological information related to the L. hoevenii migratory life history in the field, as well as insight to improve the L. hoevenii larval rearing protocols.
ISSN:0919-9268
1444-2906
DOI:10.1007/s12562-022-01602-4