Web decoration of Micrathena sexpinosa (Araneae: Araneidae): a frame-web-choice experiment with stingless bees

Détails

ID Serval
serval:BIB_C0BD1599E5BB
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Web decoration of Micrathena sexpinosa (Araneae: Araneidae): a frame-web-choice experiment with stingless bees
Périodique
Journal of Arachnology
Auteur(s)
Gálvez D.
ISSN
0161-8202
Statut éditorial
Publié
Date de publication
2011
Peer-reviewed
Oui
Volume
39
Numéro
1
Pages
128-132
Langue
anglais
Résumé
The function of silk web decorations in orb weaving spiders has been debated for decades. The most accepted hypothesized functions are that web decorations I) provide camouflage against predators, 2) are an advertisement for vertebrates to avoid web damage, or 3) increase the attraction of prey to the web. Most studies have focused on only a few genera, Argiope being the most common. In this study, I evaluated the prey attraction hypothesis of silk decorations for a species of a poorly studied genus in this topic, Micrathena sexpinosa Hahn 1822. I used a web-choice experiment in which I presented empty or web-bearing frames at the end of a tunnel to stingless bees (Tetragonisca angustula). This frame-choice experiment consisted of the following comparisons: decorated web vs. empty frame, decorated web vs. undecorated web, and undecorated web vs. empty frame. Webs with decoration intercepted significantly more bees than empty frames and undecorated webs. Therefore, the decorations of Micrathena sexpinosa might play a role in increasing foraging success.
Mots-clé
Decorated, foraging, stabilimenta, undecorated
Web of science
Création de la notice
29/06/2011 15:31
Dernière modification de la notice
20/08/2019 15:35
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