US-Czechoslovakia Research on Effects of Growth Rate on Gonadal Differentiation in Common Carp and European Tench

这是俄克拉荷马大学的威廉·L·谢尔顿博士和捷克斯洛伐克沃德纳尼渔业研究所的奥托马尔·林哈特博士之间的美国-捷克斯洛伐克研究项目，将决定鲤鱼(Cyprinus Carpio)和欧洲鲤鱼(Tinca Tinca)的性腺分化如何受到生长速度的影响，生长速度受密度依赖和温度控制。这些研究中确定的基本关系将应用于雄激素诱导性逆转的方案优化。表型性别的功能性被强调为水产养殖生产全雌性后代的育种计划的一个组成部分。美国和捷克斯洛伐克的科学家将在这项研究上进行合作，并在他们自己的国家进行鲤鱼和丁鱼的调查。他们将在第一年在不同的栖息地(池塘、水箱、网围)以不同的密度放养每一物种的后代，并从组织学上检查与时间/大小相关的性腺分化年表。在第二年，它们将形成性腺分化的温度/大小-时间关系。在第三年，他们将把密度-温度介导的性腺分化与甲基睾丸激素功能性性逆转的有效性测试结合起来。这一调查融合了一个基本问题和一个实用问题的二分法。这一水产养殖和生态系统动态项目通过使美国和东欧的顶尖专家能够结合互补的人才和汇集各领域的资源来实现促进科学知识的计划目标有很强的共同利益和能力。

This U.S.-Czechoslovakia research project between Dr. William L. Shelton of the University of Oklahoma and Dr. Otomar Linhart of the Fisheries Research Institute, Vodnany, Czechoslovakia, will determine how gonadal differentiation of common carp (Cyprinus carpio) and the European tench (Tinca tinca) is affected by growth rate, controlled by density dependency and temperature. The basic relationship determined in these studies will be applied to protocol optimization of androgen-induced sex reversal. Functionality of the phenotypic sex is emphasized as a component of a breeding program to produce all- female progeny for aquaculture. U.S. and Czechoslovakian scientists will collaborate on this research, and conduct the investigation on carp and tench in their own countries. They will stock progeny of each species at various densities in different habitats (ponds, tanks, net enclosures) during year one, and examine the time/size-related chronology of gonadal differentiation histologically. In year two, they will develop a temperature/size-time relationship of gonadal differentiation. During the third year, they will integrate the density- temperature mediated gonadal differentiation with efficacy testing of functional sex reversal with methyltestosterone. This investigation merges the dichotomy of a basic question and a pragmatic problem. This project in aquaculture and ecosystem dynamics fulfills the program objective of advancing scientific knowledge by enabling leading experts in the United States and Eastern Europe to combine complementary talents and pool resources in areas of strong mutual interest and competence.