Linked Life Data

9237299

Source:http://linkedlifedata.com/resource/pubmed/id/9237299

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1997-9-3
pubmed:abstractText
A single cohort of small individuals (31 mm mean shell length, 112 mg mean dry flesh weight) of the marine bivalve mollusc Mytilus galloprovincialis Lmk. was held sequentially for 2 wk at each of four food levels equivalent to ingested rations of less than 0.1%, 2.6%, 3.1%, and 7.4% of dry body weight per day. Growth rate reached a maximum at the highest ration level and was strongly correlated, amongst individuals, with mean heterozygosity measured across nine enzyme loci. Rates of energy expenditure were analysed separately as maintenance metabolic rate and the energy costs of growth (J mg-1 dry tissue). The maintenance metabolic rate correlated with traits of protein metabolism (protein synthesis, deposition, and breakdown), and the separate energy costs of both maintenance and growth correlated with the efficiency of protein deposition (protein growth as a proportion of synthesis). The energy costs of growth also varied in negative relation to mean individual heterozygosity. In a multiple regression analysis, the energy allocation to the costs of growth, body size, mean heterozygosity, and the efficiency of protein deposition together explained 90% of the variance amongst individuals in observed rates of growth. The results support the hypothesis that individual variability in the energy costs of protein turnover and in the efficiency of protein deposition during rapid growth are significant factors providing a link between individual genotype and its phenotypic expression as growth.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0031-935X
pubmed:author
pubmed:issnType
Print
pubmed:volume
70
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
391-402
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:articleTitle
Protein metabolism, the costs of growth, and genomic heterozygosity: experiments with the mussel Mytilus galloprovincialis Lmk.
pubmed:affiliation
Plymouth Marine Laboratory, United Kingdom.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't