直接发育的无尾蛙科姬蛙属库奎蛙的诱导排卵与产卵
Induced ovulation and egg deposition in the direct developing anuran Eleutherodactylus coqui.
作者信息
Michael Scott F, Buckley Christine, Toro Esteban, Estrada Alberto R, Vincent Shawn
机构信息
Department of Tropical Medicine, Tulane University, New Orleans, Louisiana, USA.
出版信息
Reprod Biol Endocrinol. 2004 Jan 28;2:6. doi: 10.1186/1477-7827-2-6.
Abstract
This study investigates ovulation and egg deposition behaviors in the anuran Eleutherodactylus coqui from Puerto Rico in response to stimulation with gonadotropin and gonadotropin releasing hormones. Five hormones were tested by injection over a range of doses, including mammalian LHRH, avian LHRH, fish LHRH, D-Ala6, des-Gly10 ethylamide LHRH and hCG. We report a low level of ovulation and egg deposition in response to all hormones, with the most complete and consistent results from the non-natural D-Ala6, des-Gly10 ethylamide LHRH derivative. To confirm the viability of eggs produced in this manner we performed in vitro fertilization experiments that resulted in the development of normal frogs. Reproductive behaviors in E. coqui are apparently not controlled by a mammalian form of LHRH as reported in other common laboratory anuran species. D-Ala6, des-Gly10 ethylamide LHRH induces ovulation and deposition of mature and fertilizable eggs in E. coqui.
摘要
本研究调查了来自波多黎各的无尾蛙科姬蛙对促性腺激素和促性腺激素释放激素刺激的排卵和产卵行为。通过注射一系列剂量对五种激素进行了测试，包括哺乳动物促黄体激素释放激素（LHRH）、禽类LHRH、鱼类LHRH、D-丙氨酸6、去甘氨酸10乙酰胺LHRH和人绒毛膜促性腺激素（hCG）。我们报告称，所有激素刺激后排卵和产卵水平都较低，其中非天然的D-丙氨酸6、去甘氨酸10乙酰胺LHRH衍生物产生的结果最为完整和一致。为了确认以这种方式产生的卵的活力，我们进行了体外受精实验，结果培育出了正常的青蛙。姬蛙的生殖行为显然不像其他常见实验室无尾蛙物种那样受哺乳动物形式的LHRH控制。D-丙氨酸6、去甘氨酸10乙酰胺LHRH可诱导姬蛙排卵并产出成熟且可受精的卵。
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