Results 11 to 20 of about 252 (123)

Invasive Spiders and Their Microbiomes: Patterns of Microbial Variation in Native and Invasive Species in Hawai'i. [PDF]

Ecol Evol
We investigated how gut microbiota and endosymbionts influence the success of native and invasive spiders in Hawaiian and mainland environments. Gut microbial composition was shaped more by local environmental conditions than invasion status, whereas invasive species generally harbored fewer endosymbionts, with abundance varying by site. These findings
Pfau MJ, Weber S, Kennedy S, Krehenwinkel H, Roderick G, Gillespie R.   +5 more
europepmc   +2 more sources

Endosymbiont diversity across native and invasive brown widow spider populations [PDF]

Scientific Reports
The invasive brown widow spider, Latrodectus geometricus (Araneae: Theridiidae), has spread in multiple locations around the world and, along with it, brought associated organisms such as endosymbionts.
Monica A. Mowery, Laura C. Rosenwald, Eric Chapman, Yael Lubin, Michal Segoli, Thembile Khoza, Robin Lyle, Jennifer A. White   +7 more
doaj   +2 more sources

First report of brown widow spider sightings in Peninsular Malaysia and notes on its global distribution [PDF]

Journal of Venomous Animals and Toxins including Tropical Diseases, 2015
Background:The brown widow spider (Latrodectus geometricus Koch, 1841) has colonised many parts of the world from its continent of origin, Africa. By at least 1841, the species had successfully established populations in South America and has more ...
Mustakiza Muslimin, John-James Wilson, Amir-Ridhwan M Ghazali, Kamil A Braima, John Jeffery, Fitri Wan-Nor, Mohamed E Alaa-Eldin, Siti-Waheeda Mohd-Zin, Wan S Wan-Yusoff, Yusoff Norma-Rashid, Yee L Lau, Mahmud Rohela, Noraishah M Abdul-Aziz   +12 more
doaj   +2 more sources

Aggregation Behavior in Spiderlings: a Strategy for Increasing Life Expectancy in Latrodectus geometricus (Araneae: Theridiidae)

Sociobiology, 2014
Studies on the biology of Latrodectus geometricus are scarce, especially on the behavior and life expectancy of the species. In this study we investigated the importance of the aggregation behavior of juveniles on life expectancy and longevity of the ...
William Fernando Antonialli-Junior, Ingrid Guimarães   +1 more
doaj   +3 more sources

Neurotoxic activity and ultrastructural changes in muscles caused by the brown widow spider Latrodectus geometricus venom Actividad neurotóxica y cambios ultraestructurales en musculos causados por el veneno de la araña viuda marrón Latrodectus geometricus

Revista do Instituto de Medicina Tropical de São 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.
Matias Reyes-Lugo, Trina Sánchez, Héctor J. Finol, Elda E. Sánchez, José A. Suárez, Belsy Guerreiro, Alexis Rodríguez-Acosta   +6 more
doaj   +2 more sources

Eggshell spheres protect brown widow spider ( Latrodectus geometricus) eggs from bacterial infection. [PDF]

J R Soc Interface, 2019
Eggs provide a rich source of nutrients for the developing embryo, making them a favoured food source for other organisms as well. Several defence mechanisms have evolved to protect the developing embryos against microbial threats.
Makover V, Ronen Z, Lubin Y, Khalaila I.
europepmc   +4 more sources

First Records of Black Widow Spider Latrodectus Walckenaer (Araneae: Theridiidae) in Oman

EntomoBrasilis, 2022
The present communication deals with a faunistic study on two species of Latrodectus Walckenaer with medically important issues from Oman. Several specimens of Latrodectus have been collected at various localities in Sultanate of Oman.
Ali Al-Jahdhami, Ali Al-Raeesi, Said Al-Rashdi   +2 more
doaj   +1 more source

Distribución y modelaje de nicho ecológico, comentarios biogeográficos y taxonómicos del género de arañas Latrodectus (Araneae: Theridiidae) de México

Revista Mexicana de Biodiversidad, 2021
El género de arañas Latrodectus está conformado actualmente por 32 especies, 3 en México: Latrodectus mactans, Latrodectus hesperus y Latrodectus geometricus (introducida).
Luis A. Cabrera-Espinosa, Alejandro Valdez-Mondragón   +1 more
doaj   +1 more source

Maternal care thwarts parasitoids in the invasive brown widow spider (<i>Latrodectus geometricus</i>). [PDF]

Proc Biol Sci
Maternal care can maximize offspring survival and may contribute to the establishment success of invasive species. The brown widow spider, Latrodectus geometricus , is a successful invader worldwide. Here, we investigated the role of maternal care in enhancing its success.
Arabesky V, Johnson AD, Rozenberg T, Lubin Y, Segoli M, Mowery MA.   +5 more
europepmc   +3 more sources

Phylogenetic analyses and description of a new species of black widow spider of the genus Latrodectus Walckenaer (Araneae, Theridiidae) from Mexico; one or more species?

European Journal of Taxonomy, 2023
A new species of the spider genus Latrodectus Walckenaer, 1805 from Mexico is described based on an integrative taxonomic approach. Latrodectus occidentalis Valdez-Mondragón sp. nov.
Alejandro Valdez-Mondragón, Luis A. Cabrera-Espinosa   +1 more
doaj   +1 more source