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Phalangium opilio. (Arachnida: Opiliones, Phalangiidae) Harvestman, Daddy longlegs, Harvest spider. Of the many species of harvestmen known, P. opilio tends to be the most common in relatively disturbed habitats such as most crops in temperate regions. Like the spiders and most adult mites, harvestmen have two major body sections and eight legs ...
- Abstract
- Materials and Methods
- Discussion
Members of the order Opiliones (Arachnida) are omnivorous, but their diet consists primarily of small, soft-bodied organisms (Sankey and Savory 1974). As predators, primarily at night, harvestmen consume other harvestmen, gastropods, small earthworms, millipedes, spiders, mites, earwigs, flies, springtails, aphids, leafhoppers, and additional types...
Laboratory colonies of both H. zea and A. glycines were maintained at the University of Kentucky for each experiment. H. zea was maintained using methods similar to those of Ignoffo (1965). A colony of A. glycineswas kept on soybean in a greenhouse at 16:8 (L:D) and 24–30°C. The amount of prey provided always exceeded the predator's daily consumpti...
Several factors affect the development and reproduction of predators, including the quality and complexity of diet. Some predators may incur low survival, long developmental periods, and lower fecundity when they feed on low-quality prey (Toft and Wise 1999). Toft (1995) found that the linyphiid spider Erigone atra (Blackwall) had increased reprodu...
- Cora M. Allard, Kenneth V. Yeargan
- 2005
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Aug 4, 2021 · (a) Phalangium opilio draft genome assembly. The draft assembly of the P. opilio genome comprises 580.4 Mbp (37.5% GC content) in 5137 scaffolds (N50: 211 089) and 8349 contigs (N50: 127 429; electronic supplementary material, figure S1 and table S5). The predicted genome repetitiveness is 54.4% and estimated heterozygosity is 1.24%.
- Guilherme Gainett, Vanessa L. González, Jesús A. Ballesteros, Emily V. W. Setton, Caitlin M. Baker, ...
- 2021
Mar 4, 2022 · A promising focal species for chelicerate evo-devo is the daddy-long-legs (harvestman) Phalangium opilio, a member of the order Opiliones. Phalangium opilio, breeds prolifically and is easily accessible in many parts of the world, as well as tractable in a laboratory setting. Resources for this species include developmental transcriptomes, a ...
- 10.1186/s12983-022-00454-z
- 2022
- Front Zool. 2022; 19: 11.
P. opilio have also been observed to take cover in low vegetation, like grass, during rain. Description. Like other harvestmen, P. opilio have long, slender legs and a short, round body. Adult P. opilio have a body length of 3.5–9 mm (1 ⁄ 8 – 3 ⁄ 8 in). Males tend to have smaller bodies than females, but have noticeably larger pedipalps ...
- P. opilio
- Phalangium
Cyphophthalmi. This suborder contains five (or six) families and about 100 species. It is sister to all remaining Opiliones (the “Phalangida”). Cyphophthalmi are eyeless, live in deep moist leaf litter or caves, and range in size from 1 to 7 mm. The animals have a hardened plate covering the entire dorsal surface, and they resemble mites.
Opiliones are one of the largest arachnid orders, with more than 6,500 species in 50 families. Many of these families have been erected or reorganized in the last few years since the publication of The Biology of Opiliones. Recent years have also seen an explosion in phylogenetic work on Opiliones, as well as in studies using Opiliones as test cases to address biogeographic and evolutionary ...
