Linked Life Data

3181647

Source:http://linkedlifedata.com/resource/pubmed/id/3181647

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1988-12-22
pubmed:abstractText
As in many other turtles, the sexual differentiation of gonads in embryos of Emys orbicularis is temperature-sensitive, 100% phenotypic males being obtained below 27.5 degrees C and 100% phenotypic females above 29.5 degrees C. The expression of the serologically defined H-Y (SD-H-Y) antigen at both low and high temperatures has been shown to be different in gonads and in blood : in gonads, it is closely associated with ovarian structure, whereas in blood it is independent of sexual phenotype and appears to indicate sexual genotype. Both sexes differentiate at 28.5 degrees C, suggesting that at this intermediate (threshold) temperature, sexual differentiation of gonads conforms with sexual genotype. To test this hypothesis, the expression of SD-H-Y antigen has been carried out in blood cells of Emys individuals raised from eggs incubated at the threshold temperature (28.5 degrees C). All phenotypic males typed SD-H-Y negative, whereas most phenotypic females typed SD-H-Y positive. From this concordance between sexual phenotype of gonads and SD-H-Y phenotype of blood, we postulate that a ZZ male/ZW female mechanism of genotypic sex determination is revealed at the threshold temperature for gonad differentiation in Emys.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0301-4681
pubmed:author
pubmed:issnType
Print
pubmed:volume
38
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
17-20
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
Temperature-dependent gonadal differentiation in the turtle Emys orbicularis: concordance between sexual phenotype and serological H-Y antigen expression at threshold temperature.
pubmed:affiliation
Centre de Biologie Cellulaire, C.N.R.S., Ivry-sur-Seine, France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't