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An elephant family is ruled by a matriarch,and generally consist of her female offspring and the young.

大象的家族由一头年高的母象控制,通常由她生育的母象和象组成。

The results showed that fishes of 11 orders, 18 families, and 46 species were represented in Changshu section of the Yangtze river. After the season, the total catch per unit effort increased sharply in the section; the dominant species were mainly commercial fishes such as Coilia ectenes, Mugil cephalus and Parabramis pekinensis and the annual change of dominant species was not obvious. The CPUE of Coilia ectenes had risen up and the trend of resource deterioration had been kept within limits. The caught rate of pintsized and juvenile fish rose markedly. The Margalef's index and Wilhm's index had an evident tendency of rising, while McNaughton's index and Pielou's index waved slightly.

研究结果表明:4~6月间常熟江段出现的鱼、虾、蟹类渔获物共有11目、18科、46种;春禁后,该江段总CPUE显著增加;优势种更替不明显,历年以刀鲚、鲻鱼、长春鳊等经济鱼类为主;刀鲚CPUE有所回升,资源衰退受到遏制;小型鱼类、鱼在渔获物中的比例明显上升; Margalef物种丰富度指数、Wilhm改进指数呈明显上升趋势,均匀度指数J′、优势度数Dw在窄幅范围波动。

Photo Gallery: Big Cats A mother Bengal tiger and her cub rest in the tall grass of a meadow.

意译:大猫科动物图片。一只孟加拉虎妈妈和她的兽休息在高大的草地。

According to our previous study, the secretion of endothelin-1 (ET-1) was induced after meconium aspiration in piglets.

根据我们过去之研究,猪的第一型内皮素(ET-1)之分泌可藉由胎便之吸入来诱发。

The invention discloses a method for cultivating river crab, comprising the following steps: choosing China crab as parent crab, temporary culturing female and male crab separately, then mating; culturing the crab with ovum at temperature under 5 Deg C for more than 2 months; the crab with ovum producing out ovum and the ovum growing into flea larval, megalops larva, young crab, crab strain and adult crab.

本发明是河蟹的养殖方法,包括以下步骤:选择长江系中华绒螯蟹为亲蟹,将雌雄亲蟹分开进行暂养后,进行交配;对抱卵蟹在水温5℃以下饲养2个月以上;抱卵蟹产出卵,生成蚤状体,长成大眼体;在经仔蟹,长成蟹、蟹种再到成蟹。

Among the sixteen experimental fishes, they can parasitize and metamorphose successfully on only 5~6 fish species.

实验表明:该虫对寄主鱼有一定的选择性,在所试16种鱼中,虫只能在5种鱼体上成功地寄生,并变态为蚌。

The pathologic changes of hepatopancreas, heart, spleen, gonad, metanephros, gill, muscle, intestine and vertebra, such as tissue and cell trauma, were observed.

同时维生素C缺乏也会引起建鲤肌肉、鳃、脊椎和肠道等组织发生病理变化,导致实质细胞和间质结构破坏。

Then newborn juvenile swims in the sea again, begin new metempsychosis.

接着新生的鱼再游到大海里,开始新的轮回。

It grows about 5 or 6 cm in length and it feeds on midge larvae, worms and snails.

它长度约为5或6厘米,以蚊虫,蠕虫,蜗牛为生。

Young leaves turn yellow and later virtually white, with some green colour remaining along midrib and main veins.

叶黄化,后成白色,中脉和主脉仍保持绿色。

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The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作:对伸臂位于顶部的单层框架—筒体模型进行分析,提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。

Its advantage is that it can be used in smaller units.

其优点在于可以在较小的单位中应用。