Meeting Abstract 44.5 Saturday, Jan. 5 Survival at what cost?: Consequences of a native lizard’s adaptations to invasive fire ants THAWLEY, C.J.*; ROBBINS, T.R.; LANGKILDE, T.; Pennsylvania State University; Pennsylvania State University; Pennsylvania State University cjt171@psu.edu Anthropogenic environmental change, including introductions of non-native species, imposes novel selective pressures on native species. A population’s ability to persist under […]
year: 2013
Phenology of hibernation and reproduction in free-living arctic ground squirrels
Meeting Abstract 44.3 Saturday, Jan. 5 Phenology of hibernation and reproduction in free-living arctic ground squirrels WILLIAMS, CT*; SHERIFF, MJ; BARNES, BM; BUCK, CL; University of Alaska Anchorage; University of Alaska Fairbanks; University of Alaska Fairbanks; University of Alaska Anchorage ctwilliams07@yahoo.ca Climate warming is predicted to lengthen the growing season, particularly at high latitudes, which provides increased […]
Does corticosterone deposited in feathers in autumn predict circulating corticosterone during breeding
Meeting Abstract 44.2 Saturday, Jan. 5 Does corticosterone deposited in feathers in autumn predict circulating corticosterone during breeding? HANAUER, RE*; KETTERSON, ED; Indiana University; Indiana University rhanauer@indiana.edu The adrenal steroid hormone corticosterone (CORT) is involved in the regulation of energy balance, behavior, and stress responses. Individuals differ in the degree to which they elevate CORT in response […]
Dietary effects on enzymatic immunity of migrating Mormon crickets
Meeting Abstract 44.1 Saturday, Jan. 5 Dietary effects on enzymatic immunity of migrating Mormon crickets SRYGLEY, R.B.*; USDA-Agricultural Research Service robert.srygley@ars.usda.gov Migration is often associated with movement away from scarce nutrients or other resources, and yet migration itself is energetically demanding. Migrating Mormon crickets lack nutrients, and supplementation of deficient nutrients slows migratory movements and enhances specific […]
The timing of muscle recruitment alters series elastic function during lengthening contractions
Meeting Abstract 43.5 Saturday, Jan. 5 The timing of muscle recruitment alters series elastic function during lengthening contractions ABBOTT, EM*; AZIZI, E; Univ. of California, Irvine; Univ. of California, Irvine abbotte@uci.edu During eccentric contractions muscles are actively lengthened to dissipate energy. While eccentric contractions are physiologically common, muscle injury and soreness are often associated with actively lengthened […]
The effect of muscle fibre recruitment on force-velocity properties and the implications for Hill-type models
Meeting Abstract 43.3 Saturday, Jan. 5 The effect of muscle fibre recruitment on force-velocity properties and the implications for Hill-type models HOLT, NC*; MIARA, M; WAKELING, JM; BIEWENER, AA; Concord Field Station; Concord Field Station; Simon Fraser University; Concord Field Station natalie.c.holt@gmail.com Hill-type muscle models, which are broadly used in human applications, provide a simple way to […]
Tendon function during swimming does compliance enhance performance
Meeting Abstract 43.2 Saturday, Jan. 5 Tendon function during swimming: does compliance enhance performance? RIVERA, A.R.V.*; CHOUDHURY, U.; RICHARDS, C.T.; Rowland Institute at Harvard; Rowland Institute at Harvard; Rowland Institute at Harvard angelarivera@fas.harvard.edu Tendons can enhance performance by storing elastic energy produced by the muscle, then releasing it rapidly during recoil, assisting the muscle to accelerate the […]
Neuromuscular modulation of kinematic performance in hovering hummingbirds
Meeting Abstract 43.6 Saturday, Jan. 5 Neuromuscular modulation of kinematic performance in hovering hummingbirds MAHALINGAM, S; WELCH, KC*; University of Toronto; University of Toronto Scarborough kwelch@utsc.utoronto.ca While producing the highest power output of any vertebrate hummingbirds must also precisely modulate muscle activity to vary wingbeat kinematics and modulate lift production. However, wingbeat kinematics can vary in different […]
Anticipatory motor patterns limit muscle stretch during landing in toads
Meeting Abstract 43.1 Saturday, Jan. 5 Anticipatory motor patterns limit muscle stretch during landing in toads AZIZI, E.*; ABBOTT, E.M.; Univ. of California, Irvine; Univ. of California, Irvine eazizi@uci.edu To safely land after a jump or hop, muscles must be actively stretched to dissipate mechanical energy. Muscles that dissipate energy can be damaged if stretched to long […]
A two-element Hill-type model to predict muscle forces
Meeting Abstract 43.4 Saturday, Jan. 5 A two-element Hill-type model to predict muscle forces LEE, SSM*; BIEWENER, AA; DE BOEF MIARA, M; ARNOLD, AS; WAKELING, JM; Simon Fraser University; Harvard University; Harvard University; Harvard University; Simon Fraser University lee.sabrina.sm@gmail.com Muscle models are commonly used to quantify and interpret musculoskeletal function. However, most previous models have assumed homogenous […]
