Developmental morphology of a lyriform organ in the Western black widow (Latrodectus hesperus)
نویسندگان
چکیده
منابع مشابه
Molecular 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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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 کاملQuasistatic and continuous dynamic characterization of the mechanical properties of silk from the cobweb of the black widow spider Latrodectus hesperus.
Spider silks are among the strongest and toughest known materials, but investigation of these remarkable properties has been confined largely to orb-weaving spiders. We investigated the mechanical performance of silk from the cobweb-weaving spider Latrodectus hesperus. Both silk from the scaffolding region of the web and sticky gumfooted capture lines had material properties similar to the majo...
متن کاملthe effect of e-64 on the developmental competence of sheep cocs during in vitro maturation
in the present study, the effect of e-64 at different concentrations (0.5, 1, 5 and 10 µm) added to (1) the ivm medium on oocyte nuclear maturation and developmental competence of ovine oocytes, and (2) to the ivc medium on embryonic development of ovine embryos were investigated.
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ژورنال
عنوان ژورنال: Zoomorphology
سال: 2016
ISSN: 0720-213X,1432-234X
DOI: 10.1007/s00435-016-0324-9