Resistance Des Mouffettes Andines Au Venin De Serpent

Vellard, J.

doi:10.1515/mamm.1965.29.4.517

Cited by 2 publications

(3 citation statements)

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“…After several components are synthesized and the cytoplasm is enriched in products, the cell membrane ruptures and releases its contents into the venom gland. Although being a rather destructive mode of secretion, holocrine mechanisms have been reported for several spider venom systems [ 6 , 13 , 14 , 50 ]. As it is also encountered in scorpions, holocrine secretion may play a general role in arachnids [ 51 ].…”

Section: Discussionmentioning

confidence: 99%

Morphological Analysis Reveals a Compartmentalized Duct in the Venom Apparatus of the Wasp Spider (Argiope bruennichi)

Schmidtberg

Reumont

Lemke

et al. 2021

Toxins

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Spiders are one of the most successful groups of venomous animals, but surprisingly few species have been examined in sufficient detail to determine the structure of their venom systems. To learn more about the venom system of the family Araneidae (orb-weavers), we selected the wasp spider (Argiope bruennichi) and examined the general structure and morphology of the venom apparatus by light microscopy. This revealed morphological features broadly similar to those reported in the small number of other spiders subject to similar investigations. However, detailed evaluation of the venom duct revealed the presence of four structurally distinct compartments. We propose that these subunits facilitate the expression and secretion of venom components, as previously reported for similar substructures in pit vipers and cone snails.

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Section: Discussionmentioning

confidence: 99%

Morphological Analysis Reveals a Compartmentalized Duct in the Venom Apparatus of the Wasp Spider (Argiope bruennichi)

Schmidtberg

Reumont

Lemke

et al. 2021

Toxins

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“…Due to the locations and infrequency of reports, it appears brown widows are being introduced multiple times in the Paraguay.-Pickard-Cambridge (1902) mentioned examining brown widow specimens from Paraguay, but locale and collection date were not reported. Badcock (1932) reported brown widows in 1926 (see report from Brazil above) and Vellard (1936) reported them several years later, though specific locations were not reported for either record. There are four records from 2015 in the department of Central (GBIF 2022).…”

Section: Spatiotemporal Patterns Of Brown Widow Introductionsmentioning

confidence: 99%

“…In Brazil, the diet of the brown widow consisted of six arthropod orders with Coleoptera representing 48% and Diptera representing 34% of their prey (Rossi & Godoy 2005). Though not a main portion of their diet, brown widows are also regularly seen feeding upon other arachnids (Vellard 1936). In Brazil, a brown widow was observed preying upon a native black-headed snake (Tantilla melanocephala) that was more than 18 times larger than the spider (Rocha et al 2017), and in Mexico a brown widow was observed feeding on a non-native house gecko (Hemidactylus frenatus) (Luna et al 2020).…”

Section: Spatiotemporal Patterns Of Brown Widow Introductionsmentioning

confidence: 99%

Patterns of the introduction, spread, and impact of the brown widow spider, Latrodectus geometricus (Araneae: Theridiidae), in the Americas

Wahlberg,

Antoniazzi,

Schalk

2023

The Journal of Arachnology

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Introductions of non-native species to novel environments happen often, but a species must overcome multiple biotic and abiotic filters to establish and eventually spread. Focusing on patterns of introductions can provide insights as to underlying mechanisms that facilitate establishment, and in turn, their potential effects on native communities. The brown widow spider, Latrodectus geometricus C. L. Koch, 1841, is likely native to Africa, but now has a cosmopolitan distribution due to introductions via international trade. We reviewed the patterns of brown widow introductions in the Americas to determine if there are any large-scale inferences regarding their patterns, and potential impacts, of their introduction. A total of 5,004 records from 30 countries were synthesized and demonstrate their spread to higher latitudes across time with the majority of those records (n ¼ 4,923; 98%) occurring in the past two decades. Brown widows are now documented in 30 of the 35 countries in North, Central, and South America, with one-third of those introductions detected in the last 30 years. Citizen-science databases (e.g., iNaturalist) have been instrumental in documenting the expansion of the brown widow, as more than 90% of the records synthesized came from these sources. Brown widows have proven to be successful invaders worldwide, and this review synthesizes expansion reports of their invasion in the Americas in hopes of spurring additional research in locations where they have become established.

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Resistance Des Mouffettes Andines Au Venin De Serpent

Cited by 2 publications

References 0 publications

Morphological Analysis Reveals a Compartmentalized Duct in the Venom Apparatus of the Wasp Spider (Argiope bruennichi)

Morphological Analysis Reveals a Compartmentalized Duct in the Venom Apparatus of the Wasp Spider (Argiope bruennichi)

Patterns of the introduction, spread, and impact of the brown widow spider, Latrodectus geometricus (Araneae: Theridiidae), in the Americas

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