Linked Life Data

20086127

Source:http://linkedlifedata.com/resource/pubmed/id/20086127

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2010-1-20
pubmed:abstractText
Maximum vertical forces produced by flying animals can be difficult to identify unequivocally, but potentially indicate general limits to aerodynamic force and muscle power output. We used two methods (i.e. incremental addition of supplemental mass and asymptotic load lifting) to determine both the intraspecific allometry of and methodological differences in estimates of maximum flight performance for the bumblebee Bombus impatiens. We found that incremental mass addition underestimated maximum lifting capacity by approximately 18% relative to values obtained by asymptotically increasing the applied load during a lifting bout. In asymptotic loading, bumblebees lifted on average 53% of their body weight, and demonstrated a significantly negative allometry of maximum aerodynamic force production relative to thoracic muscle mass. Estimates of maximum body mass-specific mechanical power output increased intraspecifically with body mass to the 0.38-0.50 power, depending on values assumed for the profile drag coefficient. We also found a significant reduction in vertical force production when both hindwings were removed. Limits to load-lifting capacity ultimately co-occur with an upper bound on stroke amplitude (approximately 145 deg.). Although thoracic muscle mass showed positive allometry, overall load-lifting performance exhibited significant size-dependent degradation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
1477-9145
pubmed:author
pubmed:issnType
Electronic
pubmed:day
1
pubmed:volume
213
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
426-32
pubmed:dateRevised
2010-5-19
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Limits to vertical force and power production in bumblebees (Hymenoptera: Bombus impatiens).
pubmed:affiliation
Department of Integrative Biology, University of California, Berkeley, Berkeley, CA 94720, USA. rbuchwald@gmail.com
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.