De Novo Transcriptome Analysis of the Venom of Latrodectus geometricus with the Discovery of an Insect-Selective Na Channel Modulator [PDF]
Molecules, 2021 The brown widow spider, Latrodectus geometricus, is a predator of a variety of agricultural insects and is also hazardous for humans. Its venom is a true pharmacopeia representing neurotoxic peptides targeting the ion channels and/or receptors of both ...
Pornsawan Khamtorn +5 more
doaj +2 more sources
Partial proteomic analysis of brown widow spider (Latrodectus geometricus) venom to determine the biological activities [PDF]
Toxicon: X, 2020 Spiders use their venom for defence and to capture prey. These venoms contain a cocktail of biologically active compounds that display several different biological activities, such as large molecules and small molecules including peptides, proteins ...
Pornsawan Khamtorn +6 more
doaj +2 more sources
Pre-copulatory choices drive post-copulatory decisions: mechanisms of female control shift across different life stages [PDF]
BMC Ecology and Evolution, 2023 Background The ‘wallflower’ hypothesis proposes females mate indiscriminately to avoid reproductive delays. Post-copulatory mechanisms may then allow ‘trading up’, favouring paternity of future mates.
Lenka Sentenská +3 more
doaj +2 more sources
Functional morphology of immature mating in a widow spider [PDF]
Frontiers in Zoology, 2021 Background Mating generally occurs after individuals reach adulthood. In many arthropods including spiders, the adult stage is marked by a final moult after which the genitalia are fully developed and functional.
Lenka Sentenská +3 more
doaj +2 more sources
Survey of Synanthropic Spiders in Ireland Reveals Expansion and Dominance of the Invasive Noble False Widow <i>Steatoda nobilis</i> in Urban Habitats (Araneae: Theridiidae). [PDF]
Ecol EvolRapid urbanisation has facilitated the establishment of large populations of the Noble false widow spider outside of its native range through the use of synanthropic microhabitats. In Ireland, we survey these favourable microhabitats for spider diversity for the first time and find that the Noble false widow now typically makes up more than 40% of the ...
Collier BL +5 more
europepmc +2 more sources
Veni, vidi, vici? Future spread and ecological impacts of a rapidly expanding invasive predator population. [PDF]
Ecol Evol, 2023 The Joro spider, Trichonephila clavata (L. Koch, 1878, Araneae: Araneidae), is a large‐bodied orb weaver native to Asia, likely introduced to northern Georgia, U.S. around 2010. We found evidence that the climate of T. clavata's native range differs significantly from its introduced range and that the most suitable locations in North America occur to ...
Nelsen DR +5 more
europepmc +2 more sources
Alternative mating tactics in brown widow spiders: mating with or without male self-sacrifice does not affect the copulatory mechanism [PDF]
Frontiers in ZoologyBackground Male self-sacrifice during mating is one of the most extreme forms of male reproductive investment. In two species of widow spiders (genus Latrodectus), males trigger sexual cannibalism by “somersaulting” into the fangs of the female after ...
Lenka Sentenská +3 more
doaj +2 more sources
Lethal effects of allyl isothiocyanate on the egg masses of flighted spongy moth complex Lymantria dispar japonica (Lepidoptera: Erebidae). [PDF]
Pest Manag SciThis study showed that AITC substance was lethal effect to Lymantria dispar japonica egg mass, and our results show a significant decline in egg hatching rate with increasing AITC concentrations. Abstract BACKGROUND The flighted spongy moth complex (FSMC) lays egg masses not only on host plants but also various artificial structures, such as, cargo ...
Murase S +4 more
europepmc +2 more sources
Envenomation caused by Latrodectus geometricus in São Paulo state, Brazil: a case report
Journal of Venomous Animals and Toxins Including Tropical Diseases, 2009 Widow spiders (Latrodectus spp.), also known as "black widows", have a worldwide distribution and can cause latrodectism. To the best of our knowledge, in Brazil, only one case of Latrodectus geometricus (Koch, 1841) envenomation in a human has been ...
Benedito Barraviera
exaly +3 more sources
Study of the Acute Toxicity of Scorpion Leiurus macroctenus Venom in Rats. [PDF]
ScientificWorldJournalBackground. The expansion of the territory of human habitation leads to inevitable interference in the natural range of distribution of one or another species of animals, some of which may be dangerous for human life. Scorpions—the Arachnida class and order Scorpiones—can be considered as such typical representatives.
Gunas V +6 more
europepmc +2 more sources