第 0561 号，共 1 402 张

Eastern massasauga

Sistrurus catenatus

名字的由来： "Massasauga" comes from the Ojibwe language and probably means "great river-mouth", likely describing the grasslands around river deltas.1

需要看医生很少致命，但被咬了要去看医生。

响尾蛇

咬伤吃：肉

对人的危险: 严重被咬了要去看医生。死亡非常罕见。

The eastern massasauga is a small rattlesnake that lives in eastern North America, mainly around the Great Lakes. It is the only venomous snake in Ontario, Canada. It is shy and keeps away from people, but it is a protected species because its numbers have fallen sharply.1

生活在

Southern Ontario, Canada, and eastern parts of the Midwestern United States, including the Great Lakes region1

北美洲

首页

It is most often found near wetlands such as swamps, marshes, bogs, fens, wet meadows and floodplains. It may also live in meadows, prairies and coniferous forests, and often uses crayfish burrows. In summer it may move to drier habitats.1

长度

60 cm到75 cm (2 ft到2.5 ft)1

最高速度

约 3.4 公里/小时（2.1 英里/小时）

在陆地上, 粗略估计

它吃什么？

It eats small vertebrates, mainly rodents such as voles, white-footed mice, jumping mice and shrews. Juveniles mostly eat reptiles, usually lizards in western populations and snakes in eastern ones. Frogs are also an important food in some northern and eastern populations.1

Eastern massasauga的照片 — Eastern massasauga。照片：Willem Span。 CC BY 4.0, iNaturalist.

怎样认出它

Ground colour is grey or tan.1
A row of large, rounded brown or black blotches runs down the centre of the back.1
Three smaller rows of alternating spots run down each side.1
Solid black individuals also occur.1
Like all rattlesnakes, it has heat-sensing pits on each side of its head, between the eye and the nostril.1

毒液之力

咬伤

它咬的时候，毒液通过毒牙或牙齿出来。

它的毒液会造成什么？

Its venom is cytotoxic, which means it destroys tissue. It also contains digestive enzymes that disrupt blood flow and stop blood from clotting. In its prey, these effects cause severe internal bleeding.1

它对人有多危险？

对人的危险: 严重被咬了要去看医生。死亡非常罕见。

The snake is shy and avoids humans when it can. Most bites in Ontario happened after people handled it or accidentally stepped on it. Only two deaths from its bites have been recorded in Ontario, and in both cases the victims did not receive proper treatment.1

它害怕时会做什么？

It is shy and tends to withdraw from people rather than confront them.1

如果它咬人

让人保持安静不动，被咬的肢体与心脏保持同一高度，摘下戒指和紧身物品，尽快送医院。

一定先拨打你的急救电话（112、000、911）。这里是一般急救指导，不是医疗建议。急救基础

注意安全

永远不要摸、抓或逗弄野生动物，即使是很小的，即使它看起来在睡觉或已经死了。
给它留出空间。如果遇到它，保持冷静，慢慢后退，让它走自己的路。
如果被它咬了：保持冷静，保持不动，拨打你的急救电话（112、000、911）或尽快去医院。记住它长什么样，拍张照片会有帮助。

它不是冲着你来的。它用毒液捕猎或保护自己，而且它更愿意躲起来。更多安全知识

在世界哪里？

非洲亚洲欧洲北美洲南美洲澳大利亚和大洋洲

它有多大？

它有多长？

和 4 根香蕉首尾相接一样长110 秒就能跑完 100 米（最快的人需要 9.6 秒）

Eastern massasauga和你比起来有多大？

只是在你的浏览器里算一算。什么都不会被保存或发送到任何地方。

它有多快？

一只陆龟 约 0.3 公里/小时 (0.19 mph)

Eastern massasauga 约 3.4 公里/小时 (2.1 mph)

一个在走路的人 约 5 公里/小时 (3.1 mph)

值得了解

事实

It is a pit viper, a family that includes all rattlesnakes, and it is the only venomous snake in Ontario.1

Mothers and newborns stay together for a few days, until the young shed their skin for the first time.1

Females often do not breed every year, usually having a two-year breeding cycle.1

Its populations have declined so much that it has disappeared from many of its former areas, and now survives mainly in small, isolated groups.1

给毒液专家

学名: Sistrurus catenatus
类别: 响尾蛇
家人: Viperidae2
排序: Squamata
大洲: 北美洲
宝宝: It gives birth to live young (it is ovoviviparous), usually in August or September. Litters of 5 to 14 have been reported in Illinois and 6 to 19 in Wisconsin, and the newborns are 18.8 to 24.4 cm long from snout to vent.1
它在野外过得怎么样: Threatened in Canada under federal and Ontario law; listed as endangered in several US states; IUCN Red List: least concern (2007, with a note that the assessment needs updating)1
对人的危险: 3 / 5: 严重3