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THE DIGESTIVE TRACT DEVELOPMENT OF THE TIGER GROUPER Epinephelus fuscoguttatus LARVAE TREATED WITH THYROXINE HORMONE, Indonesian Aquaculture Journal Vol.7 No.2, 2012

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Thyroxin administration in tiger grouper larval rearing was conducted to determine its effect on development of digestive tract of the larvae. Newly hatched larvae were treated with 0 mg/L (control), 0.1 mg/L, and 0.2 mg/L of thyroxin for 2 hours in a 30 L tank before were transferred into a 1 m 3 rearing tank. Samples were collected daily until 10 DAH and every 3 days until 40 DAH. Development of digestive tract was observed using histological method. For all treatments, the digestive tract was the same on 1 DAH and 2 DAH. The digestive tract of 1 DAH larvae was still closed and still in the form of a simple tube. The mouth, buccopharynx, liver, pancreas, and rectum were found on 2 DAH. On 3 DAH, the esophagus, stomach, intestines, and anus started to develop. At this stage, the digestive tract of larvae treated with and without thyroxin started to become distinguishable. Several goblet cells were noticed in the rectum of the treated larvae but not in the control. Digestive tract developed earlier in treated larvae compared to the control group, such as appearance of tongue, gill raker, fundic, and cardiac stomach development, formation of pharyngeal tooth, and gastric gland. Metamorphosis of larvae into juvenile on treated larvae occurred than that the control larvae earlier.

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Availability

B1801906

Koleksi Digital

Archivelago Indonesia Marine Library - Perpustakaan Kementerian Kelautan dan Perikanan

Available

Detail Information

Series Title

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Call Number

Koleksi Digital

Publisher

2012 : KKP-Badan Penelitian dan Pengembangan Kelautan dan Perikanan., Jakarta

Collation

115-122 hlm.

Language

Indonesia

ISBN/ISSN

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Classification

NONE

Content Type

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Media Type

-

Carrier Type

-

Edition

Vol.7 No.2, 2012

Subject(s)

Ikan Kerapu Macan (Epinephelus fuscoguttatus)
Local Content
Publikasi Internal
Larva Ikan
Karya Ilmiah
Artikel Ilmiah

Specific Detail Info

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Statement of Responsibility

Indonesian Aquaculture Journal

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