: there's in the of . The story in the and lakes of the , where North are a sight. Turn over a rock and you may well one. But in and lochs, these are . may be the catch.
别去想什么尼斯湖水怪了，苏格兰的水域中潜伏着另一种有害生物。它们起源于美国西北部的溪流和湖泊，美国北部的人民对小龙虾已经见怪不怪了。翻开一块石头就能发现一只。然而在苏格兰，这种生物却是入侵者，美国小龙虾可能会毁掉苏格兰的生态。
Allen Pleus, with the of Fish and in State, says that the is an in his . It's the only , and the are just part of the . "They play well with ," he says. "They've to be good with the other ." But those same wreak havoc in .
华盛顿鱼类和野生动物的艾伦·普鲁伊斯说小龙虾在本地是很重要的物种。这是唯一的本地小龙虾种，而淡水甲壳动物是生态系统的另一部分。“它们彼此相处得很好，和其他本地物种也相处融洽。”但是同种的小龙虾却在苏格兰肆虐。
Matt has been his line into these for about 40 years. "This area is , if not the best, one of the best trout in the world," he says. One day got a call from an . The 's life. "I could not the of that were in this part of the river. You could walk the river on !"
麦特·米歇尔在这片水域作业有40年了。“我们这有世界上数一数二的鳟鱼，”他说。然而有一天他接到了来自钓友的电话，而这个通话改变了他的一切。“我简直无法相信这里有多少小龙虾。你甚至都能踩着它们过河！
The North , which had been to ago and north, were over. "They were big . I mean, some of these were about 10, 12 long." At that size, they don't even look like ; they look like . that big, says, are more than a old; he they've been in the river for 12 years.
北美标志性的小龙虾是在数十年前被引入英国境内，并且向北蔓延最后占据了水域。“它们实在是很大，有一些都能长到10、12英寸。”有着这样的尺寸，它们甚至看起来不像小龙虾更像大龙虾。米歇尔说，这么大的动物起码有十岁以上，他认为这些至少是十二年的小龙虾。
The isn't just the size or of the ; it's that the eat the same and as the prize- trout that are to these .'s Ian is the man who first that phone call from the Clyde Burn all those years ago. With the of the , says, " are gone — wiped off the face of the Earth." That's a , are an food for the fish. means no trout.
问题不是只在于这些入侵者的尺寸或者数量，而是这些小龙虾会吃掉同样生活在这片水域的鳟鱼赖以为生的浮游生物。米歇尔的同事伊恩·米勒是很多年前就第一个认识到这个问题的人。米勒说，小龙虾的到来使得“石蝇消失了，基本上就是灭绝了。”这是问题所在，因为石蝇是鱼类重要的食物来源。没有食物，就没有鳟鱼。
Turns out, State is with a . ", we now have our own - in this area — red swamp from the ," he says. That's right. At the same time that the North are over and in , they're being out of and in their — from .
实际上，华盛顿也面临着同样的问题。“很不幸，我们这也来了一群不速之客，大多数是来自美国南部的红沼泽螯虾。事实也如此，当苏格兰的江河溪流被美国北部的小龙虾侵略时，来自路易斯安那州的小龙虾也占领了华盛顿的地盘。
