尿素排泄作为袋蛙（Gastrotheca riobambae，福勒）（无尾目，雨蛙科）幼体中主要的氮排泄方式。

Ureotelism as the prevailing mode of nitrogen excretion in larvae of the marsupial frog Gastrotheca riobambae (Fowler) (Anura, Hylidae).

Alcocer I, Santacruz X, Steinbeisser H, Thierauch K H, del Pino E M

Pontificia Universidad Católica del Ecuador, Departamento de Ciencias Biológicas, Quito.

Comp Biochem Physiol Comp Physiol. 1992 Feb;101(2):229-31. doi: 10.1016/0300-9629(92)90527-w.

Abstract

Embryos from the pouch of the marsupial hylid frog Gastrotheca riobambae excrete urea. 2. Free-living tadpoles of G. riobambae excrete mainly urea, in comparison with tadpoles of other hylid frogs. 3. The activity of arginase is high in embryos from the pouch, and in tadpoles of G. riobambae. 4. The ureotelism of G. riobambae larvae is an adaptation for prolonged incubation in the pouch of the mother, and for development in limited amounts of water.

摘要

有袋树蛙 Gastrotheca riobambae 育儿袋中的胚胎排泄尿素。2. 与其他树蛙的蝌蚪相比，G. riobambae 的自由生活蝌蚪主要排泄尿素。3. 育儿袋中的胚胎以及 G. riobambae 的蝌蚪中精氨酸酶的活性较高。4. G. riobambae 幼体的尿素排泄是为了适应在母体育儿袋中的长时间孵化以及在有限水量中的发育。