Spider mite webbing—III. Solubilization and amino acid composition of the silk protein

Hazan, Adina; Gertler, Arieh; Tahori, A. S.; Gerson, U.

doi:10.1016/0305-0491(75)90038-3

Cited by 27 publications

(23 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, it may also entail costs, such as increased intraspecific competition. In addition, because web is composed mainly of proteins (Hazan et al 1975), it is expected that spider mites allocate considerable resources to producing web.…”

Section: Introductionmentioning

confidence: 99%

The presence of webbing affects the oviposition rate of two-spotted spider mites, Tetranychus urticae (Acari: Tetranychidae)

2009

View full text Add to dashboard Cite

Several species of tetranychid mites including Tetranychus urticae Koch (Acari: Tetranychidae) construct complicated three-dimensional webs on plant leaves. These webs provide protection against biotic and abiotic stress. As producing web is likely to entail a cost, mites that arrive on a leaf with web are expected to refrain from producing it, because they will gain the benefit of protection from the existing web. Mites that produce less web may then allocate resources that are not spent on web construction to other fitness-enhancing activities, such as laying eggs. To test this, the oviposition rate of T. urticae adult females was examined on leaves with web. As a control, we used leaves where the web had been removed, hence both types of leaves had been exposed to conspecifics previously and were thus damaged. On leaves with web, the oviposition rate of T. urticae females was higher than on leaves where the web had been removed. Therefore, the presence of web constructed by conspecifics enhanced the oviposition rate of T. urticae females. This provides indirect evidence that mites use the web constructed by conspecifics and thereby save resources that can be allocated to other traits that enhance reproductive success.

show abstract

Section: Introductionmentioning

confidence: 99%

The presence of webbing affects the oviposition rate of two-spotted spider mites, Tetranychus urticae (Acari: Tetranychidae)

2009

View full text Add to dashboard Cite

show abstract

“…Eggs of nearby weavers are invariably covered by webbing (Saito, 1983). One of the functions of webs would be the regulation of humidity in the immediate vicinity of eggs (Hazan et al, 1975). In contrast, we found that the spinning phenomenon was slower on the freshly laid eggs and increased with the maturity of eggs.…”

Section: Discussionmentioning

confidence: 55%

“…Tetranychus cinnabarinus (Boisduval) revealed a very close correlation between estimated amounts of webbing and numbers of eggs deposited (Hazan et al, 1974). By comparing hatching percentages between eggs left in the webbing and eggs removed a slight but significant decline was found in the latter at low and high relative humidifies (Hazan et al, 1975). Gerson and Aronowitz (1981) and Penman and Chapman (1983) observed pesticide-induced spin down of T. cinnabarinus and T. urticae, respectively.…”

Section: Introductionmentioning

confidence: 96%

See 1 more Smart Citation

The Weaving Pattern and Structure of the Guy Ropes in Citrus Red Mite, Panonychus citri (McGregor) (Acari: Tetranychidea)

Razaq¹,

Mohammad²,

Shiraishi³

et al. 2000

Pakistan J. of Biological Sciences

View full text Add to dashboard Cite

Abstract:The pattern of weaving by guy ropes in association with egg stalk was observed under scanning electron microscope in Panonychus citri (McGregor). The egg stalk was vertical having a base of 15.5 µm wide and its length was 146 µm. Initially few guy ropes extended from the tip of the stalk to the leaf surface of host plant. The ropes rolled up to 125 µm on the stalk tip and were stretched towards the surface. Several thin ropes combined together to form strong strand. The ropes were roughly surfaced and possessed granular materials. The development of new net was accomplished with further extension of thinner ropes, which were twisted over the thicker ones and pasted on the leaf. Mites used adhesive material for the fixation of threads on the leaf as well as for webbing. The thick guy ropes were segregated before sticking on the leaf surface. The surface of the leaf was covered with adhesive, which was invisible. Several ropes overlaps the hatching egg vertically and horizontally.

show abstract

“…Furthermore, T. urticae can cover apparently any surface with their silk due to its proteinaceous, wetting, surfactant-like nature (Figs. 2 A, 3B, E, 5B; Hazan et al, 1975). Thus, 90-nm wide (single) to 10-µm wide (bundled) silk threads adhere also to wax crystals, knobby trichomes, and surface irregularities.…”

mentioning

confidence: 99%

In situ visualization of spider mite-plant interfaces

Voigt

2016

J. Acarol. Soc. Jpn.

View full text Add to dashboard Cite

The cosmopolitan and polyphagous two-spotted spider mite Tetranychus urticae (Acari, Tetranychidae) exhibits a remarkable host plant range. A cryo-scanning electron microscopic study of T. urticae in contact with selected hosts was conducted, demonstrating the universal attachment of pretarsi to a variety of plant surface types, including crystalline waxy, glandular, and non-glandular hairy, as well as non-wettable and wettable surfaces. Similar to spiders and geckos, T. urticae bears a dry hairy attachment system. Beside the six empodial hairs (setae), each leg is equipped with four tenent (adhesive) setae with multi-part spatulate terminals (subunits), independent of the developmental stage. The cryo-scanning electron micrographs clearly demonstrate the formation of intimate contact between spatulate tips and substrates. Results are discussed in the context of arthropod attachment and arthropod-plant interactions.

show abstract

Spider mite webbing—III. Solubilization and amino acid composition of the silk protein

Cited by 27 publications

References 10 publications

The presence of webbing affects the oviposition rate of two-spotted spider mites, Tetranychus urticae (Acari: Tetranychidae)

The presence of webbing affects the oviposition rate of two-spotted spider mites, Tetranychus urticae (Acari: Tetranychidae)

The Weaving Pattern and Structure of the Guy Ropes in Citrus Red Mite, Panonychus citri (McGregor) (Acari: Tetranychidea)

In situ visualization of spider mite-plant interfaces

Contact Info

Product

Resources

About