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武文魁 《海洋学报(英文版)》1987,6(4):643-647
Under the influences of environmental conditions spanish mackerel begins their spawning migration northward from the end of April to the beginning of May. One branch of the spawning population migirates through the northern part of the Huanghai Sea and enters the Bohai Sea, while the other approaches to the offshore area near Qingdao. 相似文献
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武文魁 《海洋学报(英文版)》1984,3(1):143-143
Anadromous migration of postlarva and juvenile prawn is one of its chief schooling characteristics in its life cycle. In order to look into the growth and feeding habits in relation with environmental factors, two experiments have been done. One is an investigation on the number of anadromous juvenile prawn. The other is on culturing juvenile prawns on salt pans. The results of these two experiments are summarized as follows: 相似文献
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武文魁 《海洋学报(英文版)》1984,3(4):600-601
In summer Palaemon carinicauda larvae are hatched in salt-fresh water. The prelarval development may be divided into six stages. In the larval development of the Palaemon carinicauda has close relationship with Macrobrachium carcinus (P. C. Choudbury, 1971). They differ from larval of Macrobrachium carcinus in that the buds of the first, second, fifth pereiopod occur on first stage and the buds of the third, fourth pereiopod occur on fourth stage and the fifth pereiopod become biromous types on fifth stage. The terminal segment between spine bering spinules posterior on telson. 相似文献
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“溯河”是幼对虾生活周期中一个重要特性.为了探索溯河幼对虾(Penaeus orientalis)发育生长与饵料生物和其他环境条件因素的关系,做了两项试验工作.在渤海湾大口河用跨网试验幼对虾的进河数量和在盐用田喂养幼对虾. 相似文献
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蓝点马鲛的口器构造和摄食习性 总被引：2，自引：0，他引：2
青岛近海马鲛Scomberomorus niphonius4月底—5月初,在环境条件、水温、气象、饵料等的影响下,开始北上产卵洄游,其中饵料条件是影响产卵洄游的重要因素之一,洄游过程中,青岛近海的马鲛有两部分,一部分是游向黄海北部进入渤海产卵的过路群,另一部分是游向近岸产卵的部分群体. 相似文献
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