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feeding habits of fishes
相关语句
  鱼类食性
     Review of the study on feeding habits of fishes and food webs
     鱼类食性和食物网研究评述
短句来源
     The study on the feeding habits of fishes and food webs is fundamental to understand the structure and function of fish communities.
     鱼类食性和食物网的研究对于了解鱼类群落的结构与功能具有重要意义。
短句来源
  相似匹配句对
     Feeding Habits of Orthoptera
     直翅目昆虫的食性分析
短句来源
     FEEDING HABITS OF SNAKES FROM CHEKIANG
     浙江蛇类的食性分析
短句来源
     FEEDING HABITS OF HAINAN THAMIN DEER
     海南坡鹿食性的研究
短句来源
     FEEDING HABITS OF RANA CHENSINENSIS TADPOLE
     中国林蛙蝌蚪的食性
短句来源
     Its feeding habits and injury and control methods are introduced.
     本文介绍了其幼虫的取食危害特点及防治方法.
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  feeding habits of fishes
To clarify the feeding habits of fishes in surf zones, the gut contents of 19 fish species collected in the surf zone of a sandy beach at Sanrimatsubara, western Japan, were examined.
      
To clarify the feeding habits of fishes in tropical seagrass beds on coral reefs, the gut contents of 53 fish species, collected in an Enhauls acoroides-dominated bed at Iriomote Island, southern Japan, were examined.
      


The present paper deals with the differentiations of Cyprinus in Qilu Lake, Yunnan Province, where four species distribute. The technique of scanning electron microscopy is used and the morphology of gill rakers is observed and described (table 1, plate Ⅰ). By observing Cyprinus in Qilu Lake, the differentiations of gill rakers are shown on three levels, i.e. firstly, numbers and length of gill rakers; secondly, morphology and developed extent of the secondary rakers; thirdly, types of microvilli in the same...

The present paper deals with the differentiations of Cyprinus in Qilu Lake, Yunnan Province, where four species distribute. The technique of scanning electron microscopy is used and the morphology of gill rakers is observed and described (table 1, plate Ⅰ). By observing Cyprinus in Qilu Lake, the differentiations of gill rakers are shown on three levels, i.e. firstly, numbers and length of gill rakers; secondly, morphology and developed extent of the secondary rakers; thirdly, types of microvilli in the same taste bud of a species. It is complicated and variabie in morphological forms of gill rater existing in Cyprinus. As a principle, the differentiations of gill rakers follow that the levels can be evolved separately in each species, or can be acrossed among species. Various morphologies of gill raker are connected with feeding habits of fishes. Taste buds on the gill rakers well identify food and the likes when they are filtered by fish's gill rakers. Authors incline that this may be the main reason of resulting in that microvilli develop and differentiate into two types in the same taste bud. According to the morphology of gill rakers, it can be inferred that the gill raker of C, pellegrini is the most adaptive for filtering among four species and that of C. chilia is more adaptive for filtering than those of C. yunnanensis and C. ilishaestomus. The inference is.identical with their recipes analysed by other authors before and also can be proved by the structures of their cranium. Finally, authors point out that the differentiations of Cyfrinus in Qilu Lake expresses on the ultrastructures of gill raker may be a pattern of sympatric differentiation. This pattern may have some referential use for studying other groups.

本工作以杞麓湖的鲤属鱼类为研究对象,应用扫描电镜技术研究各物种鳃耙形态结构的分化,探讨同域型物种分化在鳃耙超微结构上的表达形式。鳃耙的形态分化是多层次的,且不同物种鳃耙的分化可在各层次独立进行,也可在层次之间出现交叉,从而使分化形式丰富多彩。杞麓湖鲤属鱼类鳃耙分化模式对研究云南高原湖泊其它类群的物种分化具有一定参考意义。

The study is based on the survey of fisheries ecosystem in the Yellow Sea from March 1985 to October 1986 and May 1988. By analysis of food composition, type of food habit, trophic level, food web and food competition of fishes belonging to 40 families, 69 genus, 80 species, we conclude;1. Feeding habit of fishes in the Yellow Sea may be separated into 4 types: 1) Plankto-phagic fishes represented by Stromateoides argenteus and Sardinops melanostictus, 2) Benthopha-gic fishes...

The study is based on the survey of fisheries ecosystem in the Yellow Sea from March 1985 to October 1986 and May 1988. By analysis of food composition, type of food habit, trophic level, food web and food competition of fishes belonging to 40 families, 69 genus, 80 species, we conclude;1. Feeding habit of fishes in the Yellow Sea may be separated into 4 types: 1) Plankto-phagic fishes represented by Stromateoides argenteus and Sardinops melanostictus, 2) Benthopha-gic fishes represented by Pleuronichthys cornutus and Enchelyopus elongatus, 3) Ichthyopha-gic fishes represented by Scomberomorus niphonius and Trichiurus haumela, 4) Omnivorous fishes represented by Pneumatophorus japonicus and Pseudosciaena polyactis.2. Fishes in the Yellow Sea have an obvious seasonal variation in feeding intensity. The highest feeding intensity of the majority fishes appears in Autumn, which is related to their breeding haibits of the dominatively warmtemperate species.3. Fishes in the Yellow Sea basically belong to the second to the fourth trophic level. The low carnivorous fishes (36 species, 2.0-2.8 class) feed mainly on plankton, larva of shrimp and crab. The middle carnivorous fishes (28 species, 2.9-3.4 class) feed mainly on benthos, fish and shrimp, amount to 28 species. The high carnivorous fishes (only 16 species, 3.5-4.0 class) feed mainly on fish, shrimp and other necton.4. In the Yellow Sea, organisms such as Engraulis japonica, Crangon affinis, Ammodytes personatus, Euphausia pacifica, etc. are almost exploited by all the carnivorous fishes. They are the key link for the middle and high carnivorous fishes with plankton playing a very important role in food web of fishes in the Yellow Sea.5. The food competition in the Yellow Sea is basically harmonious inspite of a certain food competition among a few fishes. It is impossible that the food condition will be deteriorated by food competition in the near future.

于1985年3月—1986年10月和1988年5月间,对黄海海域40科69属80种鱼的食性及其相互关系进行了较系统地调查、分析。结果表明:1.黄海鱼类饵料分为4个生态类型;2.黄海鱼类摄食有明显的季节变化;3.黄海鱼类基本属于第二—第四营养级;4.日本鳀、脊尾褐虾、太平洋磷虾等优势饵料生物在黄海鱼类食物网中起着举足轻重的作用;5.黄海多数鱼类间的食物竞争关系基本是协调的。

According to the investigations in 1991 and June to July of 1992, we described the distribution of phytoplankton, zooplankton, fish, crustacean and mollusc, and the feeding habit of fish and juvenile shrimp in the coastal waters of northern Yellow Sea in this paper. The food competition relationships of various organisms were analyzed, and the carrying capacity for 3cm shrimp was estimated to be 1470 million tails.

根据1991年和1992年6月~7月的调查,描述了黄海北部近岸的浮游植物、浮游动物、鱼类、甲壳动物和软体动物等的分布,鱼类和幼对虾的食性,分析了各种生物的竞食关系。估算了体长3cm幼对虾的生态容量为14.7亿尾。

 
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