查询词典 penaeid

Loose carapace and swollen cephalothorax were likely characteristic symptoms of white spot syndrome. There was probable relation between these symptoms and the reproduction of WSSV in penaeid shrimps.

甲壳下水肿和甲壳易剥离可能是斑节对虾白斑症的特征性病症；对虾外观病症的出现可能与对虾体内病毒的增殖相关联。

Results: The infected penaeid shrimps showed a rapid reduction in food consumption, lethargy, a pink to reddish-brown coloration and a loose carapace with white spots in succession, followed by ultimate death. The characteristic features of moribund shrimps were empty stomach, a pink to reddish-brown coloration, white spots on a loose carapace and swollen cephalothorax. The relative content of WSSV DNA in blood increased rapidly after the infected shrimp showed its first symptom of detestation of food.

结果：斑节对虾感染白斑症病毒后，依次表现出厌食、不活动、体色变红、甲壳出现白斑、反应迟钝直至侧卧死亡；濒死对虾的典型症状为空胃、红体、甲壳白斑、甲壳下水肿及甲壳易剥离；感染对虾出现拒食后，其血液中白斑症病毒 DNA的相对含量急剧增加。

PCR ; Hypodermal and hematopoietic necrosis baculovirus ; Penaeid shrimp ; Explosive epidemic disease

PCR法；皮下和造血器官坏死杆状病毒；对虾；暴发性流行病

In order to control the explosive epidemic disease of Penaeid shrimp in China, the one tube multiplex polymerase chain reaction were developed for detection of hypodermal and hematopoietic necrosis baculovirus.

根据对虾皮下和造血器官坏死杆状病毒运动HHNBV－XIA靶基因序列设计了4个多重PCR法用引物（P1、P2、P3、P4）。

In order to control the explosive epidemic disease of Penaeid shrimp in China, the one tube multiplex polymerase chain reaction were developed for detection of hypodermal and hematopoietic necrosis baculovirus.

根据对虾皮下和造血器官坏死杆状病毒HHNBV－XIA靶基因序列设计了4个多重PCR法用引物（P1、P2、P3、P4）。

Chinensis and Kuruma prawn M. japonicus increased at 12 and 48 hours post-inoculum, but decreased sharply after 36 and 72 hours post-inoculum respectively. LPS inducible NOS activity also decreased significantly with the time elapsed in WSSV infected shrimps. Results of WSSV detection with the Dig-DNA Probe dot blot hybridization test showed that WSSV of the two penaeid species couldn't be detected until iNOS started decreasing.

在此基础上，我们建立了对虾血细胞中诱导型一氧化氮合成酶的鉴定方法—硝基四氮唑蓝还原法和血细胞形态法以及酶活力的测定方法—L-瓜氨酸分析法和亚硝酸盐分析法并优化了鉴定和测量条件，结果显示：对虾血细胞在4℃下与L-精氨酸和LPS孵育8h以及当L-精氨酸浓度为2.5mmol l〓LPS浓度为100μg ml〓，Ca〓浓度为2.5mmol l〓时，iNOS活力的测定结果最佳。

ABSTRACT Penaeus monodon and Litopenaeus vannamei are cultured penaeid shrimp all over the world, and they are the major cultured shrimp in China.

由白斑综合症病毒引起的白斑综合症是斑节对虾和凡纳滨对虾最主要病害之一。

A good result was provided for penaeid shrimp larvae fed with the nauplii of Xiechi strain.

其无节幼体投喂对虾幼体的饵料效果良好，存活率达60—70％。

Brooders and filial generation forepart larvaeof penaeid shrimp were detected using nested-PCR for the presence of WSSV. The results showed that 4 hi 7 genealogies showed WSSV positive at 2,2 period and theres one genealogy that brooder and larvae are all showing positive.

通过建立中国对虾家系，利用巢式PCR法跟踪检测中国对虾亲体及后代早期幼体阶段携带白斑综合症病毒(white spot syndrom virus，WSSV)状况，发现7个家系中的4个家系Z_2期即可检测阳性；其中一组亲虾、产出的卵子及各期幼体均检测阳性。

Feeding by penaeid prawns: the role of the anterior mouthparts.

国内外关于水产动物消化酶研究的概况。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐