ITS2 rDNA VARIATION OF TWO BLACK WIDOW SPECIES, LATRODECTUS MACTANS AND LATRODECTUS HESPERUS (ARANEAE, THERIDIIDAE)
نویسندگان
چکیده
منابع مشابه
The black widow spider genus Latrodectus (Araneae: Theridiidae): phylogeny, biogeography, and invasion history.
The spider genus Latrodectus includes the widely known black widows, notorious because of the extreme potency of their neurotoxic venom. The genus has a worldwide distribution and comprises 30 currently recognized species, the phylogenetic relationships of which were previously unknown. Several members of the genus are synanthropic, and are increasingly being detected in new localities, an occu...
متن کاملUltralow oxygen treatment for control of Latrodectus hesperus (Araneae: Theridiidae) on harvested table grapes.
The spider Latrodectus hesperus Chamberlin & Ivie (Araneae: Theridiidae) was subjected to low and ultralow oxygen (ULO) treatments at different temperatures. Complete control of the spiders was achieved in 24-h ULO treatments with 0.5% O2 or lower at 1 degrees C and in a 24-h low oxygen (2%) treatment at 15 degrees C. Oxygen level and temperature greatly affected spider mortality. At 1 degrees ...
متن کاملThe 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 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: Journal of Arachnology
سال: 2004
ISSN: 0161-8202,1937-2396
DOI: 10.1636/h02-51