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The redback spider (Latrodectus hasselti), also known as the Australian black widow, [2] [3] [4] is a species of highly venomous spider believed to originate in Australia but now, Southeast Asia and New Zealand, it has also been found in packing crates in the United States with colonies elsewhere outside Australia. [5]
Latrodectus hasselti, the redback spider. The widow spiders (genus Latrodectus), such as the black widow, redback spider, and katipÅ are spiders that carry a neurotoxic venom [18] which can cause a set of symptoms known as Latrodectism. Widow spiders are large, shiny house spiders with relatively spindly legs and deep, globular abdomens.
A wasp was then observed dragging a redback spider to its nest in a garden in Beaconsfield Western Australia in 2010. [4] Researchers then found an earlier instance from 1950 from South Australia. [3] It is the first species of spider wasp to be recorded as a parasitoid of the redback spider. [3]
In 2005, Andrade was named one of the Brilliant 10 by Popular Science magazine. [11] She appeared in the second episode of Season 4 of Nova ScienceNow. [12] In 2020 Andrade was featured in and presented an episode of CBC's The Nature of Things with David Suzuki about recent discoveries at the Burgess Shale, called "First Animals", [13] and was interviewed for Quirks & Quarks on her research ...
Redback spider. Australia has a number of highly venomous spiders, including the Sydney funnel-web spider, [1] its relatives in the family Hexathelidae, and the redback spider, whose bites can be extremely painful and have historically been linked with deaths in medical records. [2]
The spider lacks the bright red markings found on other widow spiders such as the black widow, the redback spider, or L. tredecimguttatus. Other than colouration, the white widow is similar in appearance to other spiders of the genus. When it comes to mating, widow spiders are a good example of high investment of males in a single mating.
Affinity describes how well a drug can bind to a receptor. Faster or stronger binding is represented by a higher affinity, or equivalently a lower dissociation constant. The EC 50 should not be confused with the affinity constant, K d. While the former reflects the drug concentration needed for a level of tissue response, the latter reflects ...
A latrotoxin is a high-molecular mass neurotoxin found in the venom of spiders of the genus Latrodectus (widow spiders) as well as at least one species of another genus in the same family, Steatoda nobilis. [1] Latrotoxins are the main active components of the venom and are responsible for the symptoms of latrodectism.