Linked Life Data

21385058

Source:http://linkedlifedata.com/resource/pubmed/id/21385058

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2011-3-9
pubmed:abstractText
The profiles of sex steroids (estradiol-17?, testosterone and 11-ketotestosterone) and the mRNA levels of gonadotropins (luteinizing hormone and follicle-stimulating hormone) were investigated before and after downstream migration in females of the Japanese eel species Anguilla japonica, which were collected in the brackish Hamana Lake and its inlet freshwater rivers. Eels were separated into three groups using otolith microchemistry: 'migrants' that grew in the inlet rivers and then made a downstream migration to Hamana Lake mainly in October and November; 'non-migrant' yellow eels caught in rivers during the same season; and 'residents,' which were yellow eels caught in rivers in August. Sex steroid levels, especially those of testosterone and 11-ketotestosterone, were higher in migrants than in non-migrants and residents. Real-time quantitative PCR analysis indicated that mRNA levels of luteinizing hormone (LH) ?-subunits were significantly higher in migrants than in other groups, whereas those of follicle-stimulating hormone ?-subunits did not show significant changes during downstream migration. The high levels of these hormones during downstream migration raise the question about if they also play a role in motivating the migratory behavior of eels.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0289-0003
pubmed:author
pubmed:issnType
Print
pubmed:volume
28
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
180-8
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Dynamics of reproductive hormones during downstream migration in females of the Japanese eel, Anguilla japonica.
pubmed:affiliation
Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwanoha, Kashiwa, Chiba 277-8564, Japan. rs55@aori.u-tokyo.ac.jp
pubmed:publicationType
Journal Article