spawning season

The results indicated that the two species had same sex ratio ( 1 ∶ 1 ) during the spawning season .

结果表明：银鲳和灰鲳在繁殖季节性比为1∶1；

The authors have found out the time-series of the spawning season , embryonic development and larval growth of Strongylocentrotus nudus , has a good command of induced spawning and artificial insemination and put forward a series of technical measures for rearing larval and juvenile sea urchins .

作者摸清了光棘球海胆的繁殖季节、胚胎发育及幼体生长时序，掌握了诱导产卵和人工授精技术，对浮游幼体及稚海胆的培育提出了一系列的技术措施。

It is show that the main spawning season is in May .

这表明该区鱼类主要产卵期在春季。

Recent globefish are spawning season , fish poisoning is consumption of high-risk period .

三是河豚。近期是河豚产卵季节，也是食用河豚中毒的高危险期。

The rearing of two crops of mussel spats in a spring spawning season

春季繁殖期两茬贻贝苗的培育

A comparative study on the effect of LRH-A to the serum gonadotropin levels of female carps in spawning season

产卵季节LRH-A对鲤、鲢、草鱼促性腺激素分泌的诱导

Materials used are taken from the experiments of artificial fertilization made during the spawning season of the fish at Rizhao county , Shandong province in1959 .

材料于1959年生殖季节在山东省日照县涛雒口进行人工授精所得。有趣的是记录到黄姑鱼早期仔鱼的二个特有特征。

Biochemical Components and Energy Density in Muscles of Coilia mystus , C. ectenes and C. ectenes taihuensis in Spawning Season in the Lower Reaches of Yangtze River

长江下游产卵期凤鲚、刀鲚和湖鲚肌肉生化成分及能量密度

Mean T levels were also highest in May and June . The gonadosomatic index ( GSI ) was higher in spawning season ; it was consistent with the change of serum sex steroid levels .

生殖季节成熟雌鱼的平均性腺成熟系数GSI显著高于其它月份，并且血清性类固醇激素水平的季节变化与性腺成熟系数的变化基本一致，都是在生殖季节达到最高峰。

The spawning season was from the last ten-day of May to July . In this period , the mature coefficient of ovaries was 11.50 % - 12.25 % , with an average of 11.88 % .

繁殖期在5月下旬-7月下旬，期间卵巢成熟系数在11.50%~12.25%，平均为11.88%；

The last ten days of October ( bottom water temperature 18-19 ℃) is the peak of spawning season , which ends in the first ten days of November , then the prawn groups disperse and enter the overwintering grounds .

10月下旬（底层水温18&19℃）为交尾盛期，11月上旬交尾结束，虾群分散进入越冬场。

Following the spring spawning season ( May-June ), the GtH release-response was less , and , in the summer ( August ) when the fish were sexually regressed , there was little or no response .

在生殖季节过后（5&6月）GtH的释放反应减弱，而在夏季（8月）性腺处于退化状况时，反应很弱或者没有反应。

Spawning season for the end of April to the beginning of November , frequently occurs in July and September . The absolute fecundity is 1951 . 8 and the relative fecundity is 32 . 7 , the mature coefficient is 23 . 0 % .

大刺鳅的繁殖习性属分批产卵类型，产卵期为4月底至11月初，产卵高峰为7月和9月，绝对怀卵量为1951.8粒，相对怀卵量为32.7粒／克，成熟系数23.0%。

Studies on then Feeding Habits and the Growth of Larval 、 Juvenile and Young Red Sea Bream ( Pagrosomus major T , et S. ) Spawning in the Autumn-winter Season

秋冬季生殖真鲷仔、稚、幼鱼摄食习性与生长的研究

There were great variations in the time beginning to spawn from year to year and these variations were related to the gonad development of shrimp and the temperature conditions of the spawning ground in May . Bottom water temperature during spawning season ranged from 13 to 23 ℃ .

开始产卵时间的年间变化较大，与对虾性腺发育状况和5月份产卵场水温的高低有关。产卵期的底层水温为13&23℃。