Tuesday, August 31, 2010
Image of Craspedacusta sowerbyi
CBC News - Technology & Science - Jellyfish discovered in Manitoba lake
To read a news article which discusses the fact that jellyfish have been found in
Star Lake,Manitoba please click on the link directly above this sentence. The lake is found within the boundaries of Whiteshell Provincial Park.
A video about this finding can be viewed at:
Apparently, according to an expert the species of jellyfish found in the lake has a
scientific name of Craspedacusta sowerbyi, a freshwater jellyfish from China that has been observed in many U.S. states and parts of eastern Canada, but never before in Manitoba. (source: http://www.cbc.ca/technology/story/2010/08/30/mb-jellyfish-lake-manitoba.html )
The question is how did this species of jellyfish manage to get in this lake?
Well, first of all I would like to provide you with some some characteristics of this jellyfish :
1.This species of jellyfish only lives in freshwater.
2.C. sowerbyi medusae are about 20–25 mm in diameter, somewhat flatter than a hemisphere, and very delicate, when fully grown.
3.They prefer standing water, and are not generally seen in fast flowing streams or rivers.
According to the link directly above:
"On August 21st 2010, C. sowerbyi was spotted and captured on the northwest corner of Falcon Lake in Manitoba, Canada. Scientists believe this is due to a recent heatwave in the Whiteshell Provincial Park area. It is proposed the C. sowerbyi came to Falcon Lake on waterfowl originating from Star Lake, Manitoba, Canada. Falcon Lake along with Star Lake remain the only two confirmed sightings of C. sowerbyi in Manitoba.
If waterfowl can transport jellyfish to lakes, is it only a matter of time before these
creatures occupy all of the lakes of the World? What will happen to all the life within these lakes when these jellyfish (which are not native to these lakes) try and take over the lake?
According to the website:"Hinterland:Who's who:Issues and Topics: Invasive Alien Species in Canada at http://www.hww.ca/hww2.asp?id=220
"When an alien species enters an ecosystem, it can have an impact on the species that are present, on important habitats, or even on the ecosystem itself. Concern arises when an alien species changes the system for the worse, either by reducing or eliminating populations of native species, or by otherwise changing the way the ecosystem works."
"In Canada, a comprehensive national plan to address the threat of invasive alien species, including invasive aquatic and terrestrial animal and plant species, is now being developed through the collaboration of federal, provincial, and territorial governments."
Thank goodness these levels of government in Canada have taken note of this problem and have plans in place (which you can read about at: http://www.hww.ca/hww2.asp?id=220 ) to deal with species such as these jellyfish in Star Lake, Manitoba!
Here is what these jellyfish look like as they live in an aquarium:
source of video:
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Thoughts worth thinking about
Laws alone can not secure freedom of expression; in order that every woman and man present their views without penalty, there must be spirit of tolerance in the entire population.- Albert Einstein Too often we underestimate the power of a touch, a smile, a kind word, a listening ear, an honest compliment, or the smallest act of caring, all of which have the potential to turn a life around. - Leo Buscaglia
A person's true wealth is the good he or she does in the world. - Mohammed
Our task must be to free ourselves... by widening our circle of compassion to embrace all living creatures and the whole of nature and its beauty. -Albert Einstein
The best way to find yourself, is to lose yourself in the service of others. - Ghandi
The unselfish effort to bring cheer to others will be the beginning of a happier life for ourselves. - Helen Keller
Aim for success, not perfection. Never give up your right to be wrong, because then you will lose the ability to learn new things and move forward with your life. Remember that fear always lurks behind perfectionism. Confronting your fears and allowing yourself the right to be human can, paradoxically, make yourself a happier and more productive person. - Dr. David M. Burns
Life is as dear to a mute creature as it is to man. Just as one wants happiness and fears pain, just as one wants to live and not die, so do other creatures. -His Holiness The Dalai Lama
Mankind's true moral test, its fundamental test (which lies deeply buried from view), consists of its attitude towards those who are at its mercy: animals. And in this respect mankind has suffered a fundamental debacle, a debacle so fundamental that all others stem from it. -
Milan Kundera, The Unbearable Lightness of Being
The worst sin towards our fellow creatures is not to hate them, but to be indifferent to them. That's the essence of inhumanity. -George Bernard Shaw
Ego's trick is to make us lose sight of our interdependence. That kind of ego-thought gives us a perfect justification to look out only for ourselves. But that is far from the truth. In reality we all depend on each other and we have to help each other. The husband has to help his wife, the wife has to help the husband, the mother has to help her children, and the children are supposed to help the parents too, whether they want to or not.-Gehlek Rinpoche Source: "The Best Buddhist Writing 2005 pg. 165
The hostile attitude of conquering nature ignores the basic interdependence of all things and events---that the world beyond the skin is actually an extension of our own bodies---and will end in destroying the very environment from which we emerge and upon which our whole life depends.