不知道这个算原创不!?嘻嘻,来看看吧!
今天早上上班,车上听早间节目CBC radio one.... Mark Connolly, Edmonton AM 6park.com讲道一个啥 后院奇怪的生物。。。哈哈,就一直仔细听得,觉得很好玩,晚上找到连接,给它笔记下来了: 6park.com总的来说,就是一种小虾,淡水里的,因为鸭子嘴里太多,或由于寄生虫,粘在羽毛上, 飞的时候掉到了这个女人家的后院。。。 6park.com连接:https://www.cbc.ca/listen/live-radio/1-17-edmonton-am/clip/15838499-how-shrimp-creatures-end-edmonton-backyards 6park.com我就玩儿一次。。。嘿嘿! 6park.comMark: Last week, Tess Peters found an unusual creature in the back yard of her summerside home. Here is how she described: 6park.comTess: Yeah, I went outside to sit on the deck and there were three little.... I thought they were slugs, I guess they were bugs, and I went to check them out. They looked like they have a lot of lets, so I poked on with paint brush. And it started to going crazy and roaming, moving all over the place. So I paniced and ran away. HAHAHA And then I came back and took a video and then swept it under the deck, so I didn't have to look at them anymore.... 好胆小的妹子。。。。 6park.comMark: That was Tess Peters talking about the odd creatures she found on her deck. Many social media sleuth cited it was a yard shrimp. It turns out it was commonly known as a SCUD 哈哈 飞毛腿导弹么?? 6park.com不是吧!!回头要去找找飞毛腿名字的渊源了。。。 6park.comThe species commonly found in fresh water. For more of this mystery creature, we join by Heather Proctor, she is a bug expert in University of Alberta. 哈哈,虫子教授。。。一看就挺像。。。
Mark: Hi Heather: Hi Mark: So what is the scud? I've never heard of it. Heather: Uh.. yeah, even though, you've never heard of it, you've probably been near tens of thousands of them. Uh..as you roamed of Alberta. They are fresh water Amphipods. Amphipod is a kind of crustation and they are superabundant in any standing water body. One of my PhD student Joan Song (笔版,I m looking at you. 哈哈)found them in density of more than 2000 per square meter in water body of Edmonton. 这个在国外学过生物的同学可能知道这个词,我查的。。。哈哈,听不懂。。。 6park.comMark: Wow, so how big are they? Heather: They ... (没听懂,同学帮帮忙吧!)if you scratch them out, they can be 1 cm . They do have a lot of legs, 2 anteni and they are just related to ISOPOD, which are the woodlise(好像是西瓜虫? 嘿嘿) that you might find under the rocks which are also crustation.
But in Alberta all of our Amphipods are fresh water, in certain places of the world, often in tropics, you do have true "yard shrimp", where the amphipods are living in damp leaf litter. I remember seeing them in Australia. And going, what the heck are these amphipods doing on land? But they turns out, in some nice warm palces in the world they do live on land. But not in Alberta. They are fresh water. 6park.comMark: Well, Tess gave us a great description of what she found and what she felt about them on her deck! but how coud this creature could come from a pond to a back yard like that? 6park.comHeather: Yeah, that's sort the more aspect of the mystery. So undoubltedly fell from the sky, where was been carried . They, I guess there were 3 of them been carried by a brid, probably a duck! (嘿嘿,对4月鸭子都飞回来了!) 6park.comAnd then the next was why would a duck be carring them? It is possible that a bird, was had mouth full of them, just happen to drop them. But what's also likely is that the scuds themselves were holding on to the feather of the bird, and just like dropped off , as the brid was flying. I gathered the woman who found the amphipods lives near a lake? Is that correct? 6park.comMark: I think so, fairly close. 6park.comHeather: Yeah, so what happens with the a lot of these amphipods is that they get parasitized by a thorny headed worm, Acanthocephala. (哈哈,这里就有点恶心了。。。)
6park.comAnd these acanthocephala are also superabundant in water bodies around Alberta. And they used the amphipods as their 1st host. So get in the amphipod and they grow a little bit. But what they really want to do is to get into duck or sometimes a muskrat. 6park.comBecause that where they can grow up, mature sexually and reproduce sexually inside the body of a warm blooded vertebrate. And the best way to get into them is to get a intermediate host eaten by a vertebrate (寄生虫都这么聪明么??达尔文!)So the acanthocephala, they actually take over the amphipod to some extend - take over their brains. and change their behavior. Usually a scud would swim away from light and disturbance. And like a duck swimming ahead, uninfected amphipods would swim away, but if they housed a acanthocephala, their brain gets turned around, and they get attracted to light and they get attracted to moving object. So they grab moving object, so ducks can be just totally covered with parasitized amphipods that grabing on to their feathers. 6park.comMark: WOW ( 哈哈,当时听到这里,我也wow了一声) 6park.comHeather: And while they grom themselves, the duck would ingest the amphipods, likewise a muskrat would also eat the amphipods. 6park.com And then the acanthocephala will emerge inside the body of these other host. And they are take up residence. Sometimes for yeats, they can live for a long time in their final host. 6park.comMark: Wow, that's fasinating chain of events. 6park.comHeather: It is all here in AB, sounds like tropical things to go on, but no, we have some complex host symboisis relationship in our own back yard as our own decks, I guess sometimes. 6park.comMark: And how dangerous is the parasites to the bird? 6park.comHeather: Actually it is really not very dangerous at all. They are very long live parasites. and they want their host live as long as possible. so they can live as long as possible. (听到这里,我想起 Tealc 和他肚子里的 Goa'uld...哈哈!) 6park.comso they are pretty benign parasites for the birds. That doesn't mean all parasites are nice and gentle. Just happen to be in this case that they aren't too bad. 6park.comMark: So then if we find a scud in our yard or anywhere else on our property, shoudl we do anything about it? Does it have any effect on us? 6park.comHeather: No, I wouldn't EAT it...HAHAHA... (说道这里我一下子就想到:这他么不是在隐射中国人吧??哈哈哈哈!!乳化!!) 6park.com寒暄,打趣之后。 6park.com完 6park.com今天就是觉得这个小采访挺好玩,觉得没有几分钟的对话,她么,我又搞了一晚上,不过,这次刚刚12点!!哈哈! 6park.com 评分完成:已经给 flinstone 加上 200 银元!
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