EFFECTS OF TEMPERATURE AND PHOTOPERIOD ON OVARIAN DEVELOPMENT IN FEMALE AYU, PLECOGLOSSUS-ALTIVELIS

被引：3

作者：

CHANG, CF

HU, HJ

SUN, LT

机构：

[1] Department of Aquaculture, National Taiwan Ocean University, Keelung

来源：

JOURNAL OF THERMAL BIOLOGY | 1993年 / 18卷 / 04期

关键词：

OVARIAN DEVELOPMENT; PHOTOPERIOD; TEMPERATURE; SEX STEROIDS; AYU; PLECOGLOSSUS-ALTIVELIS;

D O I：

10.1016/0306-4565(93)90003-C

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

1. Juvenile female ayu (N = 400), Plecoglossus altivelis, were assigned to each of four different photoperiod/temperature regimes (16 L/18-degrees-C, 16 L/24-degrees-C, 8 L/18-degrees-C and 8 L/24-degrees-C) for 16 weeks. 2. Mean body weight in the 16 L/18-degrees-C treatment group was the highest of the four treatment groups. No significant differences between body weights of the 16 L/24-degrees-C, 8 L/18-degrees-C and 8 L/24-degrees-C treatment groups were observed. 3. Ovulation and the highest values of gonadosomatic and hepatosomatic indices, plasma testosterone (T) and estradiol-17beta (E2) occurred in the 8 L/18-degrees-C group. The levels of plasma T or E2 were inconsistent in order among the 16 L/18-degrees-C, 8 L/24-degrees-C and 16 L/24-degrees-C treatment groups. 4. Peak levels of 17alpha-hydroxyprogesterone occurred in the 8 L/18-degrees-C and 8 L/24-degrees-C groups. 5. The data suggest that gonadal development in ayu is photoperiod and temperature dependent: short photoperiod and cool temperature favour gonadal development.

引用

页码：197 / 201

页数：5

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