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2017 | 71 | 105-117
Article title

Affirming Length of Body or Part/s and Weight There of as a Determinant of Capture Area of Spider Web

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EN
Abstracts
EN
A spider web is a device created by a spider out of proteinaceous silk extruded from its spinnerets, primarily to trap its prey. Among spiders, members of orb weavers (Families Araneidae, Nephilidae and Tetragnathidae) are unique for their webs of geometric precision. Web size and design may vary with the prey size, food availability and body dimensions. However, not all body dimensions are equally relevant to web design. Present study was conducted in the Happy Valley Tea Estate Darjeeling, West Bengal in order to affirm the query, does length of body or part/s and weight govern the capture area of spider web. Measures of the web structure were noted using a slide calipers. Equally several individuals of the orb weaving species that were taken into consideration were brought to the laboratory not only to measure the body/leg length under microscope but also for taxonomic evaluation. Present discourse is on the data generated during May – August, 2016. Our study was limited to the webs of Neoscona rumpfi (Thorell) (Araneidae) and Leucauge decorata (Blackwall) (Tetragnathidae). A total of 19 and 21 webs of the respective species were analyzed. Capture areas were calculated following Herberstein and Tso (2000). The result suggests that body length relates positively with the capture area of both the spider webs. However leg length, 4th leg plays a significant role in determining the capture area. Thus the present study once again confirms the fact that the capture area of spiders’ web is largely dependent on the body dimensions. However it is also important to remember that capture area of a particular species depend on dimension of specific body part/parts.
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Year
Volume
71
Pages
105-117
Physical description
Contributors
  • Department of Zoology, Sree Chaitanya College, Habra, West Bengal, India
  • Department of Zoology, Darjeeling Government College, Darjeeling, West Bengal, India
  • Department of Zoology, Darjeeling Government College, Darjeeling, West Bengal, India
author
  • Department of Zoology, Barasat Government College, Barasat, Kolkata, West Bengal, India
References
  • [1] Eberhard, W.G. 1986. Effects of orb-web geometry on prey interception and retention. pp. 71-100, In Spiders: Webs, Behavior and Evolution (W.A. Shear, Ed). Stanford Univ. Press, Stanford, California.
  • [2] Eberhard, W.G. 1988. Behavioral flexibility in orb web construction: effects of supplies in different silk glands and spider size and weight. J. Arachnol 16: 295-302
  • [3] Heiling, M. A. and M. E. Herberstein. 1998. The web of Nuctenea sclopetaria (Araneae, Araneidae): Relationship between body size and web design. J. Arachnol 26: 191-96
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  • [8] Olive, C. W 1980. Foraging specializations in orbweaving spiders. Ecology, 61: 1133-1144
  • [9] Sandoval, C. P. 1994. Plasticity in web design in the spider Parawixia bistriata: a response to variable prey type. Funct. Ecol 8: 701-707
  • [10] Sen, S, Saha, S. & Raychaudhuri, D. 2010. Estimation of capture area and mesh height of the webs of two orb weaving spider species. (Arachnida: Araneae). Bionotes, 12(3): 84-85
  • [11] Tahir, H.M, Butt, A. & Alam, I. 2010: Relationship of web characteristics and body measures of Leucauge decorata (Araneae: Tetragnathidae). Pakistan J. Zool. 42(3): 261-265
  • [12] Waldorf, E. S. 1976. Spider size, microhabitat selection and use of food. American Nat 96: 77-87
  • [13] Wise, D. H., 1993. Spiders in ecological webs. Cambridge Studies in Ecology, Cambridge University Press, Cambridge, UK: 328 pp.
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article
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bwmeta1.element.psjd-89c0af9e-0a3d-44a9-a813-726a93b227f1
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