Results 51 to 60 of about 2,242 (158)
Latrodectus hasselti Thorell, 1870 (Araneae: Theridiidae): A species new to Punjab, Pakistan [PDF]
Arthropods, 2020 This paper reports first sighting of medically important Latrodectus hasselti (Thorell, 1870) from Punjab, Pakistan. As this species has not previously reported from Punjab spider fauna of Pakistan, the brief illustration of this species is narrated ...
Naveed Akhtar +2 more
doaj
Toxins, 2020 The noble false widow spider Steatoda nobilis originates from the Macaronesian archipelago and has expanded its range globally. Outside of its natural range, it may have a negative impact on native wildlife, and in temperate regions it lives in ...
John P. Dunbar +5 more
doaj +1 more source
, 2013 Latrodectus geometricus: MEXICO, Oaxaca, Mpio. Cuicatlan, Dominguillo, 17° 38.907 N, 96° 54.703 W, 670 m, 18 July 1998, F. lvarez, J. L. Castelo & C. Duran-Barron, 2 ♀ (CNAN); Morelos, Cuernavaca, Col.
Durán-Barrón, CÉSAR G. +2 more
core +1 more source
, 2013 Latrodectus mactans: MEXICO, Morelos, [Mpio.] Palmira, 1950, 1 ♂ (CNAN); Morelos, Mpio. Tlaltizapan de Zapata, Pueblo Ticuman, 18° 45' 44'' N, 99° 07' 09'' W, 960 m, 24 October 2011, G.
Durán-Barrón, CÉSAR G. +2 more
core +1 more source
Ueber die beziehungen zwischen rhagiokrinen und lipokrinen epithelien einiger arthropoden
Memorias do Instituto Oswaldo Cruz, 1962 Es wird an Hand von Studien ueber die Speicheldruesen einiger haematophager Insekten und die Giftdruese einer Spinne, sowie die Mandibeldruese einer Hymenoptere, das Wechselspiel zwischen rhagiokrinen und lipokrinen Epithelien betrachtet.
Rudolf Barth
doaj +1 more source
Biological Reviews, Volume 101, Issue 2, Page 911-925, April 2026.ABSTRACT Three categories of explanations exist for why we age: mechanistic theories, which omit reference to evolutionary forces; weakening force of selection theories, which posit that barriers exist that prevent evolutionary forces from optimising fitness in ageing; and optimisation theories, which posit that evolutionary forces actually select for ...
Michael S. Ringel
wiley +1 more source
A Beginner's How‐To Guide to Urban Population Genetics and Genomics
Ecology and Evolution, Volume 16, Issue 4, April 2026.This guide provides practical methodologies for studying how urbanization drives evolutionary and ecological changes in species through population genetics and genomics, covering genetic markers, analytical tools, and spatial modeling approaches.
Elizabeth J. Carlen +3 more
wiley +1 more source
Molecular architecture of black widow spider neurotoxins
Nature Communications, 2021 The venom of Latrodectus spiders contains seven Latrotoxins (LaTXs), among them α-latrocrustatoxin (LCT) and δ- latroinsectotoxins δ-LIT. LaTXs bind to specific receptors on the surface of neuronal cells and target the molecular exocytosis machinery ...
Minghao Chen +5 more
doaj +1 more source
European Journal of Immunology, Volume 56, Issue 2, February 2026.Mechanism of action of the intestinal microbiota on CNS autoimmune diseases. Environmental factors shape gut microbiota composition; dysbiosis alters microbial metabolites and antigenic signals. These modulate innate and adaptive immunity, affect barrier integrity, and influence CNS‐resident cells such as microglia and astrocytes, contributing to ...
Matteo Ceccon, Francesca Ronchi
wiley +1 more source
Ontogeny repeats phylogeny in Steatoda and Latrodectus spiders [PDF]
, 2010 Web designs of young spiders are often less derived than those of older conspecific individuals. This study tested whether this ‘‘ontogeny repeats phylogeny’’ pattern occurs in two species of Latrodectus and two species of the closely related genus ...
Gilbert Barrantes +3 more
core +1 more source