ArticleThe Journal of experimental biology2015
Effect of temperature on leg kinematics in sprinting tarantulas (Aphonopelma hentzi): high speed may limit hydraulic joint actuation.
Article in The Journal of experimental biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
8 citing papers in PubMed.
- Big Spider, Big Genome: Chromosome-Level Genome of a North American Tarantula (Aphonopelma marxi) and Comparative Genomics Across 300 Million Years of Spider Evolution.Genome biology and evolution · 2026Article
- Universal Features in Panarthropod Inter-Limb Coordination during Forward Walking.Integrative and comparative biology · 2021Review
- Giant steps: adhesion and locomotion in theraphosid tarantulas.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2021Review
- Understanding the limits to the hydraulic leg mechanism: the effects of speed and size on limb kinematics in vagrant arachnids.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2021Article
- Jump takeoff in a small jumping spider.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2021Article
- Locomotor mechanism ofBiology open · 2020Article
- Analysis of Spiders' Joint Kinematics and Driving Modes under Different Ground Conditions.Applied bionics and biomechanics · 2019Article
- Kinematics of malePeerJ · 2019Article
Corrections and comments
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Authors and funding
4 authors.
Funding
Abstract
Tarantulas extend the femur-patella (proximal) and tibia-metatarsal (distal) joints of their legs hydraulically. Because these two hydraulically actuated joints are positioned in series, hemolymph flow within each leg is expected to mechanically couple the movement of the joints. In the current study, we tested two hypotheses: (1) at lower temperatures, movement of the two in-series hydraulic joints within a leg will be less coupled because of increased hemolymph viscosity slowing hemolymph flow; and (2) at higher temperatures, movement of the two in-series hydraulic joints will be less coupled because the higher stride frequencies limit the time available for hemolymph flow. We elicited maximal running speeds at four ecologically relevant temperatures (15, 24, 31 and 40°C) in Texas Brown tarantulas (Aphonopelma hentzi). The spiders increased sprint speed 2.5-fold over the temperature range by changing their stride frequency but not stride length. The coefficient of determination for linear regression (R(2)) of the proximal and distal joint angles was used as the measure of the degree of coupling between the two joints. This coupling coefficient between the proximal and distal joint angles, for both forelegs and hind-legs, was significantly lowest at the highest temperature at which the animals ran the fastest with the highest stride frequencies. The coordination of multiple, in-series hydraulically actuated joints may be limited by operating speed.
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