Adult male bolas spiders retain juvenile hunting tactics
@article{Yeargan1997AdultMB, title={Adult male bolas spiders retain juvenile hunting tactics}, author={Kenneth V. Yeargan and Laurence W. Quate}, journal={Oecologia}, year={1997}, volume={112}, pages={572-576} }
Abstract Bolas spiders in the genus Mastophora exhibit extreme sexual size dimorphism. In temperate regions, the diminutive males become adults about 2 months before females mature. Late-instar and adult females attract certain male moths by aggressive chemical mimicry of those moth species' sex pheromones. While hunting, these larger female spiders hang from a horizontal silken line and capture moths by swinging a “bolas” (i.e., a sticky globule suspended on a thread) at the approaching moths…
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The natural history, bolas construction, and hunting behavior of the bolas spider, Ordgarius sexspinosus (Thorell).
- Biology
- 2002
The behavior of bolas construction was very similar to that of the genus Mastophora, except that it holds the bolas thread by a second leg instead of a first leg.
Aggressive chemical mimicry of moth pheromones by a bolas spider: how does this specialist predator attract more than one species of prey?
- BiologyCHEMOECOLOGY
- 2002
The bolas spider attracted both prey species outside their normal activity windows and results support the idea that bolas spiders produce components of both species at all times rather than producing the pheromone of each prey species at different times of the night.
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- BiologyJournal of Chemical Ecology
- 2004
The results indicate that the adult female M. hutchinsoni produces an allomone blend that mimics not only the composition, but also the blend ratio, of the sex pheromone of a major prey species.
Selection for predation, not female fecundity, explains sexual size dimorphism in the orchid mantises
- BiologyScientific reports
- 2016
The hypothesised role of predatory selection acting on females to generate both extreme sexual sizeDimorphism coupled with niche dimorphism is novel among arthropods.
Mimicry complex in two central European zodariid spiders (Araneae: Zodariidae): how Zodarion deceives ants
- Biology
- 2002
Ant-eating spiders, Zodarion germanicum and Z. rubidum, were found to resemble ants structurally (size, colour, setosity) and behaviourally (ant-like movement, antennal illusion); these spiders are generalized Batesian mimics.
Adaptations to an aquatic life may be responsible for the reversed sexual size dimorphism in the water spider, Argyroneta aquatica
- Environmental Science, Biology
- 2003
The need for males to move efficiently under water and the costs to females of building a retreat and breeding shelter may be important determinants of body size and morphology.
Diet and predatory behavior of the Asian ant-eating spider, Asceua (formerly Doosia) japonica (Araneae: Zodariidae)
- Environmental Science, BiologySpringerPlus
- 2016
This study assessed the diet difference and predatory behavior of the Japanese zodariid Asceua japonica and observed the first observation of myrmecophagy of Zodariidae in East Asia.
First evidence of aggressive chemical mimicry in the Malagasy orb weaving spider Exechocentrus lancearius Simon, 1889 (Arachnida: Araneae: Araneidae) and description of a second species in the genus
- Biology
- 2012
Some observations on the natural history of Exechocentrus lancearius are reported, including photographs of its highly modified foraging web, which provide indirect evidence of aggressive chemical mimicry.
Trophic specialisation in a predatory group: the case of prey‐specialised spiders (Araneae)
- Biology, Environmental ScienceBiological reviews of the Cambridge Philosophical Society
- 2015
This work critically evaluates contemporary evolutionary hypotheses that might be used to explain the evolution of specialised foraging in predators, and proposes a unifying concept within which four types of trophic categories are defined using ecological (diet breadth) and evolutionary contexts.
No ontogenetic shift in the realised trophic niche but in Batesian mimicry in an ant-eating spider
- Environmental Science, BiologyScientific Reports
- 2020
It is concluded that Mexcala is an ant-eating specialist that reduces its prey spectrum and shifts ant models during ontogenesis, and is an inaccurate mimic of ants both in the juvenile and adult stages.
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