期刊
BIOLOGY OPEN
卷 4, 期 12, 页码 1643-1648出版社
COMPANY BIOLOGISTS LTD
DOI: 10.1242/bio.013144
关键词
New World tarantula; Tarantula climbing; Claw-tufts; Tarsal scopula
类别
资金
- Comision Sectorial de Investigacion Cientifica de la Universidad de la Republica, Uruguay [C-609-348]
Tarantulas are large spiders with adhesive setae on their legs, which enable them to climb on smooth vertical surfaces. The mechanism proposed to explain adhesion in tarantulas is anisotropic friction, where friction is higher when the leg pushes than when it pulls. However, previous studies and measurements of adhesion in theraphosids were performed using dead specimens. To test their ability to climb, we studied static friction of live theraphosid spiders on different surfaces and at different inclines. We compared burrower with arboreal species to test the hypothesis of higher friction in arboreal tarantulas. We found a complementary participation of claw tufts and scopula of anterior and posterior legs when the tarantula climbs. The mechanics of climbing in association with the biological characteristics of the species are discussed.
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