Salient features of the orb-web of the garden spider, Argiope luzona (Walckenaer, 1841) (Araneae: Araneidae)
Abrenica-Adamat, L., Torres, M., Barrion, A., Dupo, A., Demayo, C. (2009). Salient features of the orb-web of the garden spider, Argiope luzona (Walckenaer, 1841) (Araneae: Araneidae). EKB Journal Management System, 1(1), 73-83. doi: 10.21608/eajbsz.2009.16023
Liza R. Abrenica-Adamat; Mark Anthony J. Torres; Adelina A. Barrion; Aimee Lynn B. Dupo; Cesar G. Demayo. "Salient features of the orb-web of the garden spider, Argiope luzona (Walckenaer, 1841) (Araneae: Araneidae)". EKB Journal Management System, 1, 1, 2009, 73-83. doi: 10.21608/eajbsz.2009.16023
Abrenica-Adamat, L., Torres, M., Barrion, A., Dupo, A., Demayo, C. (2009). 'Salient features of the orb-web of the garden spider, Argiope luzona (Walckenaer, 1841) (Araneae: Araneidae)', EKB Journal Management System, 1(1), pp. 73-83. doi: 10.21608/eajbsz.2009.16023
Abrenica-Adamat, L., Torres, M., Barrion, A., Dupo, A., Demayo, C. Salient features of the orb-web of the garden spider, Argiope luzona (Walckenaer, 1841) (Araneae: Araneidae). EKB Journal Management System, 2009; 1(1): 73-83. doi: 10.21608/eajbsz.2009.16023

Salient features of the orb-web of the garden spider, Argiope luzona (Walckenaer, 1841) (Araneae: Araneidae)

Egyptian Academic Journal of Biological Sciences, B. Zoology
Article 7, Volume 1, Issue 1, December 2009, Page 73-83  XML PDF (511.7 K)
Document Type: Original Article
DOI: 10.21608/eajbsz.2009.16023
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Authors
Liza R. Abrenica-Adamat1; Mark Anthony J. Torres1; Adelina A. Barrion2; Aimee Lynn B. Dupo2; Cesar G. Demayo1
1Department of Biological Sciences, College of Science and Mathematics Mindanao State University – Iligan Institute of Technology 9200 Iligan City, Philippines
2Institute of Biological Sciences, College of Arts and Sciences, U.P. Los Bańos, Laguna, Philippines
Abstract
Many orb-web building spiders such as the garden spider Argiope luzona (Walckenaer, 1841) add conspicuous, white zigzag silk decorations termed stabilimenta onto the central portion of the webs. We studied the features of the web of this species by examining the stabilimenta, variations in form and quantity, presence and absence of stabilimentum and structure to be able to understand the nature of web building especially the factors that affect the nature of the built web. Field observations reveal that the stabilimenta of A. luzona are mainly discoid or cruciate which significantly depended on body size. Smaller individuals (body size < 0.6 cm) produced mainly discoid stabilimenta and larger individuals (body size > 0.6 cm) produced strictly cruciate stabilimenta that are 1-armed, 2-armed, 3-armed, 4-armed, or 5-armed.  Results also showed that the spiders’ body size was positively correlated to the number of stabilimentum arms, length of upper arms and to the length difference between upper and lower arms. Smaller individuals (body size :< 0.8 cm) built 2-armed and 4-armed only while larger individuals (body size :> 0.8 cm) built 1-armed, 2-armed, 3-armed, 4-armed and 5-armed stabilimenta.
Keywords
stabilimentum; descriptive statistics; Argiope luzona; UTHSCSA Image Tool; arm asymmetry
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