Results 41 to 50 of about 1,100 (149)

Males of a sexually cannibalistic spider chemically assess relative female quality

BMC Evolutionary Biology, 2020
Background Mate choice is a taxonomically wide-spread phenomenon, mostly exerted by females although male mate choice occurs as well. While costs and benefits of choosiness have been well studied, the underlying mechanisms are largely unclear.
Anna-Lena Cory, Jutta M. Schneider
doaj   +1 more source

Three Novel Spider Genomes Unveil Spidroin Diversification and Hox Cluster Architecture: Ryuthela nishihirai (Liphistiidae), Uloborus plumipes (Uloboridae) and Cheiracanthium punctorium (Cheiracanthiidae). [PDF]

Mol Ecol Resour
ABSTRACT Spiders are a hyperdiverse taxon and among the most abundant predators in nearly all terrestrial habitats. Their success is often attributed to key developments in their evolution such as silk and venom production and major apomorphies such as a whole‐genome duplication.
Schöneberg Y, Audisio TL, Ben Hamadou A, Forman M, Král J, Kořínková T, Líznarová E, Mayer C, Prokopcová L, Krehenwinkel H, Prost S, Kennedy S.   +11 more
europepmc   +2 more sources

Animal Venom Pharmacological Resources: Exploiting Bioactive Peptides to Target Multi-Drug-Resistant Bacteria. [PDF]

Biochem Res Int
Background The escalating rise of multi–drug‐resistant (MDR) bacterial strains significantly threatens global health, creating a “silent pandemic” prompted by natural selection, gene mutation, and horizontal gene transfer. This crisis is worsened by the deficit in the development of new treatments, necessitating the innovative discovery of new potent ...
Jaber R, Mattei C, Accary C, Roufayel R, Abi Khattar Z, Fajloun Z.   +5 more
europepmc   +2 more sources

Argiope bruennichi

Argiope bruennichi (Scopoli, 1772) (Fig. 2D) NEW OBSERVATIONS. — Italia. Orsiera Rocciavrè Natural Park • 1♀; Fenestrelle: Chisone Valley; 45°2’23”N, 7°3’14”E; 22.VIII.2017; A. Pane leg., photo observation, https://www.inaturalist.org/observations/7616021 Italia.
Tolve, Marco, Rizzioli, Barbara, Pane, Andrea, Isaia, Marco   +3 more
openaire   +4 more sources

Conditional monogyny: female quality predicts male faithfulness

Frontiers in Zoology, 2012
Introduction Male monogyny in the absence of paternal investment is arguably one of the most puzzling mating systems. Recent evidence suggests that males of monogynous species adjust their life-history and their mating decision to shifting spatial and ...
Welke Klaas W, Zimmer Stefanie M, Schneider Jutta M   +2 more
doaj   +1 more source

Unravelling Evolutionary Dynamics of Female Sexual Cannibalism and Male Reproductive Strategies in Spiders

Integrative Zoology, EarlyView.
Sexual cannibalism (SC), where one mating partner consumes the other in the context of mating, is especially prevalent among spiders. However, the evolution of SC in spiders is still not fully understood. We review key hypotheses for SC and explore how female‐initiated SC has driven the evolution of various male counter‐adaptations to mitigate its ...
Simona Kralj‐Fišer, Franco Cargnelutti, Daiqin Li, Matjaž Kuntner   +3 more
wiley   +1 more source

Not all crickets are equal: selective shrike predation highlights the conservation value of diverse arthropod communities to grassland birds

Ibis, EarlyView.
Understanding dietary preferences and prey selection is pivotal for interpreting the ecology and conservation needs of threatened species. We investigated the diet composition and prey selection of the Red‐backed Shrike Lanius collurio in a montane grassland of the central Italian Apennines, with special regard to sex‐related differences and the ...
Leonardo Ancillotto, Sauro Giannerini, Matteo Bianchi, Giulia Santalmasi, Marco Zaccaroni, Tommaso Lipparelli, Matteo Annessi, Jacopo Martino, Emiliano Mori   +8 more
wiley   +1 more source

Rapid range expansion is not restricted by inbreeding in a sexually cannibalistic spider.

PLoS ONE, 2014
Few studies investigated whether rapid range expansion is associated with an individual's short-term fitness costs due to an increased risk of inbred mating at the front of expansion.
Stefanie M Zimmer, Henrik Krehenwinkel, Jutta M Schneider   +2 more
doaj   +1 more source

Phenology, Mating Behaviour, and Ecology of a Wild New Zealand Nurseryweb Spider (Dolomedes minor)

New Zealand Journal of Zoology, Volume 53, Issue 3, September 2026.
Population dynamics are key to the understanding of mating systems, and in particular, sex ratios provide an insight into the evolutionary pressures governing a mating system. Variation in sex ratios can influence mate competition, parental investment strategies, and ultimately shape mating rates and the reproductive success of individuals within a ...
Simon J. Connolly, Christina J. Painting
wiley   +1 more source

An Easy Method to Sample Headspace Pheromones in the Field

Ethology, Volume 132, Issue 5, Page 365-371, May 2026.
Females of the orb‐web spider Argiope bruennichi produces a pheromone to attract males for mating. Most of our knowledge about the pheromone and its strategical use by the females is known from the laboratory. While we have confidence in the validity of these results, we wanted to make sure and measure pheromones in the field.
Zoe Dössel, Katharina Weiss, Jutta M. Schneider   +2 more
wiley   +1 more source