Oviposition and development in the glass frog Hyalinobatrachium orientale (Anura: Centrolenidae)

Phyllomedusa: Journal of Herpetology

Christopher J. Pollock¹  J. Roger Downie¹  Mohsen Nokhbatolfoghahai² 

[1] 2 School of Life Sciences, Graham Kerr Building, University of Glasgow, Glasgow G12 8QQ, UK.;Biology Department, Faculty of Science, University of Shiraz, Shiraz 71345, Iran.;

关键词: Hyalinobatrachium orientale. Egg clutches are nearly always laid on the undersides of leaves (one exception);    usually leaves of Heliconia sp. are used;    but Philodendron and palms may be used in the absence of Heliconia. Clutches contain 28.0 ± 5.3 eggs (mean ± SD) and eggs are 1.86 ± 0.11 mm in diameter. The behavior of one amplectant pair was followed for more than five hours;    the pair rotated several times around a small area of the leaf depositing eggs in a tight spiral formation. External embryonic features were observed by scanning electron microscopy. Surface ciliation is extensive up to the time of hatching when it is lost;    external gills are short and a cement gland is absent. Hatching gland cells were detectable on the anterodorsal surface of the head from Day 4 after deposition and persisted until at least Day 10;    and hatching occurred between Days 9 and 16. During this period;    progressive development in tail length;    surface pigmentation;    intestinal coiling;    and oral disc features was observed. Post-hatching larvae reared for six weeks grew 37% in length and tripled in weight;    amphibians;    embryonic development;    glass frogs;    oviposition;    Tobago;    West Indies;   

DOI  :  http://dx.doi.org/10.11606/issn.2316-9079.v14i1p3-17

来源: DOAJ

【 摘 要 】

Oviposition and external embryonic developmental features are described in the Tobago glass frog, Hyalinobatrachium orientale. Egg clutches are nearly always laid on the undersides of leaves (one exception); usually leaves of Heliconia sp. are used, but Philodendron and palms may be used in the absence of Heliconia. Clutches contain 28.0 ± 5.3 eggs (mean ± SD) and eggs are 1.86 ± 0.11 mm in diameter. The behavior of one amplectant pair was followed for more than five hours; the pair rotated several times around a small area of the leaf depositing eggs in a tight spiral formation. External embryonic features were observed by scanning electron microscopy. Surface ciliation is extensive up to the time of hatching when it is lost; external gills are short and a cement gland is absent. Hatching gland cells were detectable on the anterodorsal surface of the head from Day 4 after deposition and persisted until at least Day 10, and hatching occurred between Days 9 and 16. During this period, progressive development in tail length, surface pigmentation, intestinal coiling, and oral disc features was observed. Post-hatching larvae reared for six weeks grew 37% in length and tripled in weight, but remained at Gosner Stage 25.

【 授权许可】

Unknown