Linked Life Data

17515412

Source:http://linkedlifedata.com/resource/pubmed/id/17515412

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
Pt 11
pubmed:dateCreated
2007-5-22
pubmed:abstractText
Obtaining population-level life history data such as egg and clutch size in reptiles has most often required that individuals be sacrificed. This prevents a reexamination of individuals over intra-annual and inter-annual time scales, limiting insight into the effects of varying environmental conditions on reproductive output. Here, we test the use of a laptop-sized portable ultrasound imaging system as a nondestructive means for quantifying reproductive investment in five species of lizards with a range of body sizes, forms and life histories. Ultrasound scans produced egg counts that were accurate for clutch sizes of two to seven eggs, and provided good estimates (within 5.5+/-1.69 eggs, mean +/- s.e.m., relative error 21%) for clutch sizes of between 18 and 41 eggs. Egg measurements using virtual calipers produced average egg volumes that deviated from actual volumes by 0.09+/-0.01 cm(3) (relative error 25.9%), and estimated clutch volumes that differed from actual volumes by 1.03+/-0.26 cm(3) (relative error 29.5%). We also monitored development in five lizard species and found that changes in follicle and egg size and degree of embryonic development can be measured over periods of just a few days.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0022-0949
pubmed:author
pubmed:issnType
Print
pubmed:volume
210
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1859-67
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Use of portable ultrasonography as a nondestructive method for estimating reproductive effort in lizards.
pubmed:affiliation
University of New Mexico, Department of Biology, MSC03-2020, 1 University of New Mexico, Albuquerque, NM 87131-0001, USA. cgilman@unm.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.