Embryonic and larval development of glass catfish Kryptopterus vitreolus

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Embryonic and larval development of glass catfish Kryptopterus vitreolus

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Khunjaroenrak, W. & S. Ponza. (2020). Embryonic and larval development of glass catfish Kryptopterus vitreolus (Ng and Kottelat, 2013). Journal of Agricultural Research and Extension, 37(1): 29-39 ref.16. Retrieved from https://li01.tci-thaijo.org/index.php/M ... iew/241675

https://www.cabdirect.org/cabdirect/abs ... 0203224164
PDF: https://erp.mju.ac.th/openFile.aspx?id= ... hod=inline
Abstract : The study on embryonic and larval development of glass catfish, Kryptopterus vitreolus (Ng and Kottelat, 2013) was carried out in Phitsanulok Inland Fisheries Research and Development center during September-October 2018. The study started from fertilization until hatching that used artificial breeding method. Development and external change of fry from the yolk sac stage to the post-larvae stage were studied. It was found that the fertilized eggs of glass catfish were an adhesive egg, the diameter ranged from 0.75-0.85 mm., round shape and bright yellow in color. The embryo after fertilization was summarized as follows: The cleavage period was 2 h. and 20 min. postfertilization, morula stage took 3 h. and 50 min., blastula took 7 h., then gastrula was 10 h., somite took 15 h. and 5 min., the hatching out took 21 h. and 30 min. at 25.3-26.7°C of water temperature. The newly larvae were 2.5 mm. in length with the large yolk sac. The 6 h. larvae were 2.8 mm. in length, 1 day old larvae were 4.7 mm. in length, 3 days old larvae were 5.7 mm. in length and the yolk absorption was completed, 5 days old larvae were 6.9 mm. in length and 10 days old larvae were 7.8 mm. in length.
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Figure 2   Larval development of glass catfish, Kryptopterus vitreolus (Ng and Kottelat, 2013)                (A) 6 hours; (B) 1 day old; (C) 3 days old; (D) 5 days old; (E) 10 days old
Figure 2 Larval development of glass catfish, Kryptopterus vitreolus (Ng and Kottelat, 2013) (A) 6 hours; (B) 1 day old; (C) 3 days old; (D) 5 days old; (E) 10 days old
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