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Photography For the hobby, the product, the profession and the obsession.

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Old 25th January 2016, 01:45 AM   #310486  /  #726
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from the wiki I linked
Quote:
Bites to humans[edit]
Venom[edit]
Funnel-web spider venom contains a compound known as atracotoxin, an ion channel inhibitor, which makes the venom highly toxic for humans and other primates. However, it does not affect the nervous system of other mammals.[6] These spiders typically deliver a full envenomation when they bite, often striking repeatedly, due to their defensiveness and large chitinous cheliceral fangs. There has been no reported case of severe envenoming by female funnel-web spiders, which is consistent with the finding that the venom of female specimens is less potent than the venom of their male counterparts.[9][10] In the case of severe envenomation, the time to onset of symptoms is less than one hour, with a study about funnel-web spider bites finding a median time of 28 minutes. This same study revealed that children are at a particular risk of severe funnel-web envenoming, with 42% of all cases of severe envenoming being children.[10] There is at least one recorded case of a small child dying within 15 minutes of a bite from a Sydney funnel-web spider, though that event occurred before the development of an antivenom.[11]

Antivenom[edit]
Main article: Antivenom
The antivenom was developed by a team headed by Struan Sutherland at the Commonwealth Serum Laboratories in Melbourne.[12] Since the antivenom became available in 1981,[13] there have been no recorded fatalities from Sydney funnel-web spider bites.[6][10] In September 2012, it was reported that stocks of antivenom were running low, and members of the public were asked to catch the spiders so that they could be milked for their venom. One dose of antivenom requires around 70 milkings from a spider.[14]

Symptoms[edit]
The bite of a Sydney funnel-web is initially very painful, with clear fang marks separated by several millimetres.[15] The size of fangs is responsible for the initial pain.[16] In some cases the spider will remain attached until dislodged by shaking or flicking it off.[17]

Treatment[edit]
A funnel-web bite is regarded as a medical emergency requiring immediate hospital treatment.[18]

Current guidelines for antivenom recommend two vials, or four vials if symptoms of envenomation are severe. Patients are assessed every fifteen minutes, with further vials recommended if symptoms do not resolve.[19]
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Old 25th January 2016, 01:51 AM   #310492  /  #727
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makes the venom highly toxic for humans and other primates. However, it does not affect the nervous system of other mammals
That's interesting.
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Old 25th January 2016, 01:53 AM   #310494  /  #728
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yes, complete case of happenstance given the spider evolved on a continent which never had primates until the arrival of humans
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Old 25th January 2016, 01:56 AM   #310495  /  #729
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Space monkeys I bet.
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Old 25th January 2016, 02:10 AM   #310503  /  #730
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That is a surprising result. Biochemistry
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Old 3rd February 2016, 09:15 AM   #311501  /  #731
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!!!!! !!!!!

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Old 3rd February 2016, 10:44 AM   #311502  /  #732
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lol such a silly bird!
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Old 10th February 2016, 10:43 PM   #312302  /  #733
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death-birds from the sky fire-bomb the Outback https://www.washingtonpost.com/news/...ut-their-prey

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Old 11th February 2016, 12:11 AM   #312320  /  #734
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If that's true then consider me very impressed.
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Old 11th February 2016, 12:16 AM   #312324  /  #735
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Quote:
A black kite flies near a wildfire in Northern Australia. Researchers think the birds are strategically moving burning brush on the savanna to lure out their dinner.
Lol as if. Everyone knows savanna is way too inhospitable for any animal to survive

Last edited by Dionysus; 11th February 2016 at 12:19 AM.
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Old 11th February 2016, 12:24 AM   #312332  /  #736
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reading the article it seems to be still hypothetical in the sense they have yet to film the falcon with the smoking gum in its claw
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Old 11th February 2016, 12:27 AM   #312335  /  #737
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Originally Posted by borealis View Post
Space monkeys I bet.
Someone call me?

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Proud propagator of the "fire for warmth" myth
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Old 11th February 2016, 01:22 AM   #312402  /  #738
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Originally Posted by MSG View Post
reading the article it seems to be still hypothetical in the sense they have yet to film the falcon with the smoking gum in its claw
if someone doesn't see what I did there I'm gonna be mightily upset
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Old 11th February 2016, 01:49 AM   #312421  /  #739
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I saw and chortled.
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Old 11th February 2016, 01:51 AM   #312424  /  #740
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I knew I could count on you
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Old 11th February 2016, 03:31 AM   #312452  /  #741
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Nerds



...not bad!
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Old 11th February 2016, 10:41 AM   #312479  /  #742
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I snickered.

I'm a little concerned about a kitecarrying burning brush too near their feathers.

What if two kites, carry it on a line between them?
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Old 11th February 2016, 10:49 AM   #312480  /  #743
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Personally, I think Brown Falcons and Black Kites are not particularly smart, and I'd be very surprised if there's anything to this story.
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Old 11th February 2016, 01:03 PM   #312493  /  #744
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Speciesist!
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Old 11th February 2016, 11:54 PM   #312559  /  #745
gib
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Originally Posted by MSG View Post
Quote:
Originally Posted by MSG View Post
reading the article it seems to be still hypothetical in the sense they have yet to film the falcon with the smoking gum in its claw
if someone doesn't see what I did there I'm gonna be mightily upset
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Old 12th February 2016, 03:50 AM   #312599  /  #746
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Originally Posted by Martin.au View Post
Personally, I think Brown Falcons and Black Kites are not particularly smart, and I'd be very surprised if there's anything to this story.
well I'm not convinced but I wouldn't dismiss anything Bob Gosford said out of hand. He's been watching birds in the Centre for a long time
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Old 12th February 2016, 04:55 AM   #312600  /  #747
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Having watched a crow repeatedly and deliberately forcing a groundhog off the road shoulder and onto the pavement in apparent hope that it would end in tasty roadkill, I wouldn't put it past a bird of prey to figure out setting fires would force out the small edibles.
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Old 13th February 2016, 02:48 AM   #312735  /  #748
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Cool intrigue! Evidence of avian intelligence or Ozzie drop bear spoof? You decide ...
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Old 16th February 2016, 08:35 AM   #313130  /  #749
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Actual Drop Bears!!!111! http://www.theguardian.com/australia...ds?CMP=soc_568

Quote:
“We assumed that they were at least partly arboreal,” Archer said. “The hind foot has an opposable first toe, the front arm is grasping and the fore limbs are extremely powerful, which is typical of animals that climb, having to pull their body weight up. And their claws are quite capable of maintaining them in trees.

“These were hunters that didn’t necessarily run down prey, but surprised and lunged at them – yes, dropped from trees.”
http://www.nature.com/articles/srep21372
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Old 16th February 2016, 09:07 PM   #313163  /  #750
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Fascinating creature and such weird flesh-eating dentition. Seems the all up package doesn't really converge particularly well with any other known carnivorous mammal but I can't find the statement in the press release

Quote:
These were hunters that didnt necessarily run down prey, but surprised and lunged at them yes, dropped from trees.
even hinted at anywhere in the Flinders Uni, School of Biological Sciences article. What they seem more inclined to suggest is that they were pack hunters but I suppose in view of their morphological oddities lying somewhere intermediate between the strategies of modern felids in terms of hunting and feeding behaviour.

Quote:
As body mass, group living and group hunting are seen as co-adaptations for procuring large prey, it is plausible that marsupial lions were pack hunters. Such a strategy would have allowed them to prey upon the largest marsupial, the rhinoceros-sized Diprotodon optatum, bones of which have been found with incidental marsupial lion tooth marks.
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