蛤

STUDIES ON PHYSIOLOGICAL ECOLOGY OF SHORT- NECKED CLAM Ⅱ.

菲律宾蛤仔生理生态学研究Ⅱ。

Yantai Normal College,264025,ChinaABSTRACT Most epithelial nuclei of Nuttallia olivacea are elliptic in shape and the chromatin is filiform.Most nuclei of connective tissue are round and have Feulgen positive granules.

摘 要 紫彩血蛤的鳃上皮细胞核多为椭圆形，核内染色质呈丝状；结缔组织细胞的核多为圆形，部分核内有块状Feulgen阳性颗粒。

The manila clam Ruditapes philippinarum is one of the economically important seashells in our country, with Agamaki clam Sinonovacula constricta, oyster Ostrea and bloody clam Tegillarca granosa together being called "the four greatest farming seashells"traditionally.

中文摘要：菲律宾蛤仔Ruditapes philippinarum，作为我国主要的海产经济贝类之一，与缢蛏、牡蛎和泥蚶一起被称为我国传统的&四大养殖贝类&。

Every family was resolved monophyletic except Tellinidae and Solecurtidae. The paraphyletic Tellinidae and polyphyletic Solecurtidae mixed together, indicating the close relationship between two families.

双壳纲各科都构成了单系群，樱蛤科和截蛏科除外，前者并系发生，后者则多系发生，二者可能具有较近的亲缘关系。

The people had no agriculture but, over thousands of years, had developed techniques and equipm ent to exploit their environm ent, basing their econom y on fishing in stream s and coastal w aters that teem ed w ith salm on, halibut, and other varieties of fish; gathering abalone, m ussels, clam s, and other shellfish from the rocky coastline; hunting land and sea m am m als; and collecting w ild plant foods.

他们没有农业，但是经过几千年，已经发展了探索自身环境的技术和设备。他们是基于大量出现鲑鱼、大比目鱼和其他多种鱼类的自身流域和水岸捕鱼的经济；基于从落基山水岸聚集了鲍鱼、蚌类、蛤和其他贝壳动物的经济；基于捕猎地域和海洋哺乳动物的经济；以及基于收集野生植物的食物的经济； 10。

The results indicated that the Spisula solidissi ma could reach sexual mature in one year and spawned just one time in one bree ding season.

结果表明，大西洋浪蛤一年能达到性成熟，一个繁殖季节产卵一次，卵为球形，卵径为 50～60μ m；在23℃左右水温下，受精卵经16～20h发育成D形幼虫，幼虫浮游期为16～20d；壳长260～290μ m时为附着变态阶段。

It is, he says,"a document of the tribute system of the empire", with pieces of turquoise from mines that were over 1,000 miles apart, white teeth carved from shells found on both coasts of Mexico, and red details made out of Spondylus, a thorny oyster shell found 60 metres below the surface of the sea.

Neil MacGregor说：&这幅画表明了阿兹特克帝国的贡赋体系&，因为这幅画中，镶嵌的绿松石产自1000公里之外的地方，白牙由采自墨西哥东、西海岸的贝壳雕成，红色细部取自一种带刺的海菊蛤属牡蛎壳，而这种牡蛎生长于海面下60米深的地方。

The deceased also wore a pendant made from the shell of a Spondylus, or spiny oyster—"a highly appreciated shell among the high-class during pre-Hispanic times for its orange-purple color," Gallaga said..

死者也佩戴着有海菊蛤贝壳的垂饰，或者长满刺的牡蛎。——&从其橙紫颜色可以看出，那是前西班牙时代上层社会中享有高度赞誉的贝壳。&

Type genus of the family Tridacnidae: giant clams.

车磲科的模式属；大蛤。

Men, by contrast, need to clam up.

男人，但相比之下，要蛤了。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。