Results 91 to 100 of about 252 (123)
Habitat, redescription and distribution of Latrodectus geometricus in Uruguay (Araneae: Theridiidae) [PDF]
Biota Neotropica, 2013 This study provides the first accurate records of Latrodectus geometricus C. L. Koch, 1841 for Uruguay and extends the known distribution of this species to the Southeastern region of South America. Data and figures of the genitalic morphology for the recognition of the species and natural history in this country are indicated.
MIGUEL Simo +2 more
exaly +4 more sources
Neurotoxic activity and ultrastructural changes in muscles caused by the brown widow spider Latrodectus geometricus venom [PDF]
Revista Do Instituto De Medicina Tropical De Sao Paulo, 2009 Brown widow spider (Latrodectus geometricus) venom (BrWSV) produces few local lesions and intense systemic reactions such as cramps, harsh muscle pains, nausea, vomiting and hypertension. Approximately 16 protein bands under reducing conditions and ~ 14 bands under non-reducing conditions on a 12.5% sodium dodecyl sulfate-polyacrylamide gel ...
Elda E Sanchez +2 more
exaly +5 more sources
Journal of Arachnology, 2012 Abstract The brown widow spider, Latrodectus geometricus C. L. Koch 1841, is non-native to North America and has experienced an explosive range expansion in the first decade of the 21st century. Previously restricted to peninsular Florida, it is now well established in the southeastern United States and southern California.
Richard S Vetter
exaly +3 more sources
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Southern Medical Journal, 2008
The brown widow, Latrodectus geometricus, is one of five species of Latrodectus in the United States, and is reported to be one of the least dangerous. However, we report a previously healthy patient bitten by a brown widow, resulting in a serious reaction requiring hospitalization.
Jérôme Goddard
exaly +3 more sources
The brown widow, Latrodectus geometricus, is one of five species of Latrodectus in the United States, and is reported to be one of the least dangerous. However, we report a previously healthy patient bitten by a brown widow, resulting in a serious reaction requiring hospitalization.
Jérôme Goddard
exaly +3 more sources
Biology and Environment, 2023
ABSTRACT: The widow spiders of the genus Latrodectus (Araneae: Theridiidae) have a well-documented global medical significance due to the potent venom many of them possess. This medical importance partially stems from the global range expansion the genus has undergone, facilitated in part by human trade.
B L Collier
exaly +2 more sources
ABSTRACT: The widow spiders of the genus Latrodectus (Araneae: Theridiidae) have a well-documented global medical significance due to the potent venom many of them possess. This medical importance partially stems from the global range expansion the genus has undergone, facilitated in part by human trade.
B L Collier
exaly +2 more sources
Cycle and Rhythm in the Ovulation of the Spider Latrodectus geometricus C. Koch
Nature, 1961WE define ‘cycle’ as that phenomenon represented by regular variations of internal origin. By ‘rhythm’, we understand a phenomenon represented by regular variations imposed by external conditions. ‘Regularity’ signifies a constancy of the interval separating two identical stages of the variation1.
A. BOUILLON, R. LEKIE
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Additions to the Known U.S. Distribution ofLatrodectus geometricus(Araneae: Theridiidae)
Journal of Medical Entomology, 2008The range of the brown widow spider Latrodectus geometricus C. L. Koch includes much of Africa and South and Central America. This medically important spider has been recently introduced to Japan, Indonesia, Papua New Guinea, Australia, Hawaii, and California.
K S, Brown, J S, Necaise, J, Goddard
openaire +2 more sources
Sexual Cannibalism in the Brown Widow Spider (Latrodectus geometricus)
Ethology, 2008AbstractSexual cannibalism may represent an extreme form of male monogamy. According to this view, males gain reproductive success by sacrificing themselves to females. We studied the occurrence and timing of sexual cannibalism in the brown widow spiderLatrodectus geometricusand compared male courtship and mating behavior with virgin and with ...
Michal Segoli +4 more
openaire +1 more source
Two Maryland Records for the Brown Widow Spider, Latrodectus geometricus Koch (Araneae: Theridiidae)
Proceedings of the Entomological Society of Washington, 2021Gaye L. Williams, Robert B. Trumbule
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Behavioural Processes, 2016
Studies related to communication on spiders show that, as in other invertebrates, the interactions between conspecifics are also made through chemical signals. Therefore, in order to assess whether the composition of cuticular compounds might be involved in interactions that occur during the days after the emergence of juveniles in Latrodectus ...
Ingrid de Carvalho, Guimarães +4 more
openaire +2 more sources
Studies related to communication on spiders show that, as in other invertebrates, the interactions between conspecifics are also made through chemical signals. Therefore, in order to assess whether the composition of cuticular compounds might be involved in interactions that occur during the days after the emergence of juveniles in Latrodectus ...
Ingrid de Carvalho, Guimarães +4 more
openaire +2 more sources