Biochemical Differentiation of the Sibling Black Widow Spiders, Latrodectus mactans and L. variolus
نویسندگان
چکیده
منابع مشابه
The treatment of black widow spider envenomation with antivenin latrodectus mactans: a case series.
Black widow spiders (Latrodectus mactans) are found throughout the US. Though bites are relatively uncommon, they pose a significant health problem with over 2500 reported to American poison control centers annually. Black widow spider bites cause a characteristic envenomation syndrome consisting of severe pain, muscle cramping, abdominal pain, and back pain. The significant pain associated wit...
متن کاملEffect of the venom of the black widow spider, Latrodectus mactans tredecimguttatus, on evoked action potentials in the isolated nerve cord of Periplaneta americana.
INTRODUCTION NERI et al. (1965) found that Latrodectus tredecimguttatus venom at a minimal concentration of 400 hg of protein per ml upon application first enhanced and then suppressed the endogenous (spontaneous) activity recorded on one cereal nerve in the isolated nerve cord ofPeriplaneta americana. They also observed that the endogenous activity could be restored by immersing the cord in a ...
متن کاملThe prevalence of brown widow and black widow spiders (Araneae: Theridiidae) in urban southern California.
The brown widow spider, Latrodectus geometricus C. L. Koch, has become newly established in southern California during the first decade of the 21st century. Brown widows and egg sacs were collected within the urban Los Angeles Basin using timed searches. We also collected and compared the abundance and distribution of the native western black widow spider, Latrodectus hesperus Chamberlin & Ivie...
متن کاملMolecular and mechanical properties of major ampullate silk of the black widow spider, Latrodectus hesperus.
Molecular and material properties of major ampullate silk were studied for the cobweb-building black widow spider Latrodectus hesperus. Material properties were measured by stretching the silk to breaking. The strength was 1.0 +/- 0.2 GPa, and the extensibility was 34 +/- 8%. The secondary structure of the major ampullate silk protein was studied using carbon-13 NMR spectroscopy. Alanine underg...
متن کاملMaterial properties of cobweb silk from the black widow spider Latrodectus hesperus.
We present the material analysis of scaffolding silk from the cobweb of the black widow spider Latrodectus hesperus. 30 strands were tested from the webs of nine spiders. Strands were stretched at 0.211 mm/s as force and extension were recorded. Cross-sectional area was measured under 1000 x oil-immersion light microscopy. The stress strain curve shows that cobweb silk is a distinct material fr...
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ژورنال
عنوان ژورنال: Psyche: A Journal of Entomology
سال: 1967
ISSN: 0033-2615,1687-7438
DOI: 10.1155/1967/878547