STUDIES ON THE LARVAE AND JUVENILES OF FISHES ACCOMPANYING FLOATING ALGAE-II
STUDIES ON THE LARVAE AND JUVENILES OF FISHES ACCOMPANYING FLOATING ALGAE-II
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浮藻类鱼类幼鱼和幼鱼的研究-II
DOI：
10.2331/suisan.24.411
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发表时间：
1958
影响因子：
0.4
通讯作者：
Yoichi Shojima
中科院分区：
文献类型：
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作者：
K. Uchida;Yoichi Shojima
虽然人们对白天与浮藻伴生的鱼类已经有了很大的关注，但到目前为止，还没有关于夜间鱼类的研究。本文研究了鱼类的生命与浮游藻类昼夜活动的关系。作者获得了幼虫。和鱼苗在夜间和白天都伴随着漂浮的藻类。他们还在夜间的1千瓦灯下收集鱼类，不受藻类的影响。收集于1958年4月至1959年3月，在福冈县筑崎附近，用矩形勺网和垂网进行。结果如表1所示。在白天采集的情况下，如图1所示，漂浮在矩形路线附近的浮游藻类被捞起。在夜间采集的情况下，作者在正式日落前30分钟离开港口，并在LAMP的帮助下缓慢进行搜索漂浮的藻类。灯被举在船头，照亮了大约30米以内的水面。在某些地方，船停了下来，灯挂在船的一侧，收集了大约一个小时。夜间浮游藻类获得的鱼类种类和大小范围与白天相似。从夜间采集到的草鱼和金鱼没有显露出其身体特有的黄色，白色底色上的黑色花纹清晰可见。甲鱼没有表现出任何明显的颜色变化。仅在灯光下采集的大多数物种与伴随漂浮藻类的物种不同。在仅在灯下和藻类下捕获的少数物种中，观察到大小和颜色模式的差异。出现在灯光下的幼鱼大多是生活在水面附近的幼鱼，其中也有一些物种是通过浮游藻类获得的。这一事实可以理解，这些成长的幼鱼只是暂时使用漂浮的藻类作为它们的栖息地，而不是它们在生活史上改变栖息地后生活的浅水藻类带。采集的个体数量和物种数量因季节而异。春季至初秋鱼类丰富，冬季鱼类稀少。8月上旬种类最多，为17种，10月和2月初最少，为3种。塞巴斯蒂斯(Sebases Spp)从4月中旬到5月中旬，发现了大量的。5月下旬的产量很大，主要是因为收集物中有大量的西洋参和斑点罗非鱼。在7月至12月期间，人们在阿布舞中捕获了达松鱼和甲鱼。9月上旬采集的个体数量最多，仅有6种。2~3月上旬，斑潜蝇和黑斑潜蝇为优势种，但总个体数较少。
Although much attention has been paid to the fishes accompanying floating algae in the daytime, so far as is known, no study has been made of those at night. This paper is concerned with the relation between the life of fishes and the floating algae during night as well as day. The authors obtained larvae. and juveniles of fishes accompanying the floating algae at night as well as in the daytime. They also collected fishes under a 1-kilowatt lamp at night, independent of algae. Collections were made during April, 1958 to March, 1959, in the vicinity of Tsuyazaki, Fukuoka Prefecture, by mean of a rectangular scoop net and dip nets. The results are given in Table 1. In the case of day collections, the floating algae drifting near the rectangular route as shown in Fig. 1 were scooped up. In the case of night collections, the authors left port thirty minutes before official sunset, and slowly proceeding searched for the floating algae with the help of lamp. The lamp was held at the bow, light-ing the water surface within about thirty meters. At certain locations the boat stopped with the lamp hung on the side of the boat for collecting about an hour. Species and size ranges of fishes obtained from the floating algae at night were similar to those obtained in the daytime. In Oplegnathus fasciatus and Dasson trossulus from the night collecting the characteristic yellow coloration of their bodies was not revealed, and the blackish patterns on whitish ground color were clearly seen. Aluterid fishes did not show any noticeable color change. Most of the species collected under the mere lamp light were different from those accompanying the floating algae. In the few species caught both under the mere lamp and under the algae, differences in size and color patterns were observed. The majority of the juveniles appeared under the lamp light were those living near the surface, and some species among them were also obtained with the floating algae. This fact can be understood that those grown juveniles only temporarily used floating algae as their habitat in place of the algal zone in shallow waters where they were to live after the change of habitat in their life history. Number of individuals as well as of species in the collections varied in seasons. Fish were abundant during spring to early autumn and scarce in winter. The largest number of species, 17, was obtained in early August, and the least number of species, 3, in October and in early February. Sebastes spp. were found in abundance from mid-April to mid-May. Late May yielded large catch according primarily to the abundance of Seriola quinqueradiata and Girella punctata in the collection. Dasson trossulus and aluterid fishes were taken in abun-dance during July to December. The largest number of individuals was collected in early September, represented by but 6 species. Girella punctata and Agrammus agrammus dominated from February to early March, but total number of individuals was rather few.