欧洲绿色蟹特征,饮食,繁殖

欧洲绿色螃蟹是一个普通的沿海螃蟹。它也被世界各地的许多不同名称所知。

它的常见名称包括Shore crab, Green Shore crab, Green crab, European Shore crabetc. It is actually a widespread invasive species, and listed among the 100 ‘world’s worst alien invasive species’.

The European Green crab is actually native to the north-east Atlantic Ocean and Baltic Sea.

但它具有殖民化类似的栖息地Australia、南非、南美和大西洋一个d Pacific coasts of North America. Read some more information about this crab species below.

European Green Crab Characteristics

欧洲绿色蟹的甲壳沿着每只眼睛后面的轮辋有五个短牙,眼睛之间的三个起伏。

The undulations, which protrude beyond the eyes, are the simplest means of distinguishing C. maenas from the closely related C. aestuarii, which can also be an invasive species.

欧洲绿蟹的颜色从绿色到棕色,灰色或红色变化很大。这种颜色变化具有遗传组分,但主要是由于当地的环境因素。

平均而言,少年螃蟹显示比成人更大的图案。一般来说,延迟蜕皮的螃蟹变得红色而不是绿色。

The red crabs are stronger and more aggressive, but are less tolerant of environmental stresses (such as low salinity or hypoxia).

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平均而言,欧洲绿色螃蟹的甲壳长达60毫米,宽度为90毫米。但一些螃蟹可以在不列颠哥伦比亚省的本土范围内达到约10.1厘米宽。照片和信息Wikipedia

饮食

欧洲绿色螃蟹主要是在各种软体动物,蠕虫和小型甲壳类动物上饲养。

Breeding

The European Green crabs generally mate between spring and fall, though timing varies.

Generally a male crab mate with a smaller female by holding her underneath him and carrying her around until she molts. And after the molting the female crab turns over and they mate.

The female crab extrudes the eggs in a mass that she carries under her abdomen. On an average under favorable conditions, a large female crab can spawn up to 0.2 million eggs at a time.

Uses

欧洲的绿蟹用于食物。它也是商业收获并用于欧洲的诱饵,有时在美国东部。

特别说明

The European Green crab is fished on small scale in the north-east Atlantic Ocean, with approximately 1200 tonnes being caught annually. Countries with largest catches are France and the United Kingdom.

欧洲绿色螃蟹可以生活在各种类型的保护和半保护的海洋和河口栖息地(包括泥质,沙子或岩石基板,新鲜沼泽和淹没水生植被。他们喜欢柔软的底部。

European Green crab are used for food and popular in some countries. But it is potentially impacting a number of fisheries.

通过各种机制发生了其成功的分散,例如船舶的船体,海上平面,包装材料和散水处的惯例。金博宝188官网注册但是,审查欧洲绿色的全品种概况在下表中。

Name European Green Crab
Kingdom 亲爱的
Arthropoda
Class 软甲纲
Order Decapoda
家庭 Portunidae.
Genus 凯中
Species C. Maenas.
二重称名称 Carcinus maenas.
Other Names 又称岸蟹,绿岸蟹,GREN蟹,欧洲岸蟹等。
品种目的 食物
特别说明 鱼ed in small scale in the northeast Atlantic Ocean, can live in all types of protected and semi-protected marine and estuarine habitats, prefer soft bottoms for living, used for food
Breeding Method 自然
气候耐受性 Native climate
Body Color Varies greatly from green to brown, grey or red
Rarity Common
Availability Europe

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