Ortega-Salas A A, Reyes-Bustamante H
Instituto de Ciencias del Mar y Limnología, UNAM, Calzada Joel M. Camarena s/n, Mazatlán 82240, Sinaloa Apdo, Post: 811, México.
Rev Biol Trop. 2006 Dec;54(4):1113-6.
We studied the time of initial sexual maturity and the fecundity of the goldfish Carassius auratus under semi-controlled conditions. During the study the water temperature fluctuated from 21 to 30 degrees C, the pH between 7 and 8, and the dissolved oxygen between 5.5 and 7 ppm. Sixty days old juvenile fish received prophylactic treatments of brackish water (15 per thousand) and methylene blue baths (1%), and they were fed with live Daphnia magna. The initial sexual maturity occurred between 225 and 233 days of captivity. Mean absolute fecundity was 2,347 (+/- 302.2 SD) ova per gonad, and mean relative fecundity was 63.44 eggs/g fish weight. Gonadosomatic index was between 7.5 and 9.0. Our data will allow ornamental fish producers to calculate the time of initial maturity and fecundity for this species.
我们在半控制条件下研究了金鱼（Carassius auratus）初次性成熟的时间和繁殖力。在研究期间，水温在21至30摄氏度之间波动，pH值在7至8之间，溶解氧在5.5至7 ppm之间。60日龄的幼鱼接受了盐水（千分之十五）和亚甲蓝浴（1%）的预防性处理，并用活的大型溞喂养。初次性成熟发生在圈养225至233天之间。平均绝对繁殖力为每个性腺2347（±302.2标准差）枚卵，平均相对繁殖力为每克鱼体重63.44枚卵。性腺指数在7.5至9.0之间。我们的数据将使观赏鱼生产者能够计算该物种初次成熟的时间和繁殖力。
