Results 31 to 40 of about 15,853 (242)

Effect of laboratory heat stress on mortality and web mass of the common house spider, Parasteatoda tepidariorum (Koch 1841) (Araneae: Theridiidae) [PDF]

open access: yes, 2020
We determined the effects of chronic heat stress on web construction of Parasteatoda tepidariorum (Araneae: Theridiidae) by measuring the survival and web mass of specimens after a 48-h period within a temperature chamber at 21, 30, 35, 40, or 50°C.
Brown, Aubrey J., Houghton, David
core   +2 more sources

Know your foe: synanthropic spiders are deterred by semiochemicals of European fire ants

open access: yesRoyal Society Open Science, 2021
Many ants prey on spiders, suggesting that web-building spiders may avoid micro-locations near ant colonies or frequented by foraging ants. Here we tested the hypothesis that ant-derived semiochemicals deter synanthropic spiders.
Andreas Fischer   +3 more
doaj   +1 more source

The Northern Widow Spider, Latrodectus Variolus (Araneae: Theridiiae), in Michigan [PDF]

open access: yes, 2017
Until recently the species of widow spider occurring in Michigan was considered a variant of the black widow, Latrodectus mactans (Fabricius). Levi (1959) summarized and revised the worldwide genus Latrodectus, placing the southern areas of Illinois ...
Wilson, Louis F
core   +3 more sources

Dramatic expansion of the black widow toxin arsenal uncovered by multi-tissue transcriptomics and venom proteomics. [PDF]

open access: yes, 2014
BackgroundAnimal venoms attract enormous interest given their potential for pharmacological discovery and understanding the evolution of natural chemistries.
Ayoub, Nadia A   +4 more
core   +2 more sources

A case: Acute myocardial infarction in a child due to spider bite

open access: yesJournal of Microbiology and Infectious Diseases, 2014
This report presents a case of a ten-years-old girl, who suffered myocardial ischemia following by "black widow" spider bite. A few minutes after the bite, her parents saw a small, black and shiny lesion in insect bite. The clinical signs began
Edmond Laho, Edmond Puca
doaj   +1 more source

Black widow spider bite in Johannesburg

open access: yesSouthern African Journal of Infectious Diseases, 2018
Black widow spider bites are uncommon in South Africa, but it is important for clinicians to be aware of the clinical presentation in order to initiate appropriate treatment. This case highlights the presentation and management of a middle-aged gentleman
Teressa S. Thomas   +2 more
doaj   +1 more source

Spider Web DNA: A New Spin on Noninvasive Genetics of Predator and Prey. [PDF]

open access: yesPLoS ONE, 2015
Noninvasive genetic sampling enables biomonitoring without the need to directly observe or disturb target organisms. This paper describes a novel and promising source of noninvasive spider and insect DNA from spider webs.
Charles C Y Xu   +3 more
doaj   +1 more source

Ancient properties of spider silks revealed by the complete gene sequence of the prey-wrapping silk protein (AcSp1). [PDF]

open access: yes, 2012
Spider silk fibers have impressive mechanical properties and are primarily composed of highly repetitive structural proteins (termed spidroins) encoded by a single gene family.
Ayoub, Nadia A   +3 more
core   +2 more sources

Chromosome mapping of dragline silk genes in the genomes of widow spiders (araneae, theridiidae) [PDF]

open access: yes, 2010
With its incredible strength and toughness, spider dragline silk is widely lauded for its impressive material properties. Dragline silk is composed of two structural proteins, MaSp1 and MaSp2, which are encoded by members of the spidroin gene family ...
Ayoub, NA, Hayashi, CY, Zhao, Y
core   +3 more sources

Notes on the Brown Widow Spider, Latrodectus Geometricus (Araneae: Theridiidae) in Brazil [PDF]

open access: yes, 2017
Three species of the cosmopolitan genus Latrodectus were reported by Bucherl (1964) as occurring in Brazil: L. mactans mactans (Fabricius) from Recife, Pernambuco and from P6rto Alegre, Rio Grande do Sul; L.
Anderson, Marilyn P.
core   +2 more sources

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