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Shinsuke Morioka Phonaphet Chanthasone Phoutsamone Phommachan Bounsong Vongvichith 《Ichthyological Research》2012,59(1):53-62
Morphological development, including the body proportions, fins, pigmentation and labyrinth organ, in laboratory-hatched larval
and juvenile three-spot gourami Trichogaster trichopterus was described. In addition, some wild larval and juvenile specimens were observed for comparison. Body lengths of larvae
and juveniles were 2.5 ± 0.1 mm just after hatching (day 0) and 9.2 ± 1.4 mm on day 22, reaching 20.4 ± 5.0 mm on day 40.
Aggregate fin ray numbers attained their full complements in juveniles >11.9 mm BL. Preflexion larvae started feeding on day
3 following upper and lower jaw formation, the yolk being completely absorbed by day 11. Subsequently, oblong conical teeth
appeared in postflexion larvae >6.4 mm BL (day 13). Melanophores on the body increased with growth, and a large spot started
forming at the caudal margin of the body in flexion postlarvae >6.7 mm BL, followed by a second large spot positioned posteriorly
on the midline in postflexion larvae >8.6 mm BL. The labyrinth organ differentiated in postflexion larvae >7.9 mm BL (day
19). For eye diameter and the first soft fin ray of pelvic fin length, the proportions in laboratory-reared specimens were
smaller than those in wild specimens in 18.5–24.5 mm BL. The pigmentation pattern of laboratory-reared fish did not distinctively
differ from that in the wild ones. Comparisons with larval and juvenile morphology of a congener T. pectoralis revealed several distinct differences, particularly in the numbers of myomeres, pigmentations and the proportional length
of the first soft fin ray of the pelvic fin. 相似文献
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Shinsuke Morioka Bounsong Vongvichith Phoutsamone Phommachan Phonaphet Chantasone 《Ichthyological Research》2013,60(1):16-25
Morphological development in laboratory-reared larval and juvenile bighead catfish Clarias macrocephalus is described. Body length (BL) of larvae and juveniles was 3.4 ± 0.3 (mean ± SD) mm just after hatching, reaching 11.3 ± 1.0 mm by day 16, and 24.2 ± 2.8 mm by day 40. Overall aggregate fin ray numbers (except for caudal fin procurrent rays) attained full complements by 15.2 mm BL. Gill buds appeared on day 0, those of barbels (four pairs) and primordial nostrils on day 1, and pectoral fins on day 3. All larvae began feeding by day 3. Conical teeth were observed on day 7. Notochord flexion began on day 2, the yolk being completely absorbed during days 7–9. Melanophores were scarce at hatching, increasing with growth to cover almost the entire body except the ventral surface of the abdominal cavity. Proportions of head length, pre-anal length, body depth, eye diameter, and maxillary barbel length became relatively constant after yolk absorption, those of snout length and upper jaw length increasing until ca. 12–13 mm BL and decreasing thereafter. Suprabranchial organ started developing in postflexion larval stage larger than ca. 11.0 mm BL (day 16), and air-breathing was suggested to be functional at that time. 相似文献
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Morioka Shinsuke M. Vongvichith Bounsong Chantasone Phonaphet Phommachan Phoutsamone 《Ichthyological Research》2022,69(1):140-148
Ichthyological Research - In this study, we describe the morphological development of laboratory-reared black sharkminnow Labeo chrysophekadion larvae and juveniles. The body lengths (BL) were... 相似文献
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Morioka Shinsuke M. Vongvichith Bounsong Chanthasone Phonaphet Phommachan Phoutsamone 《Ichthyological Research》2021,68(4):506-516
Ichthyological Research - The morphological developments in laboratory-reared larval and juvenile Cirrhinus molitorella and larval C. microlepis were described, and ontogenies (including yolk sizes... 相似文献
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