Abstract:
:Progesterone, estrone, estradiol-17 beta and corticosterone were quantified simultaneously for the first time in female American kestrel (Falco sparverius) plasma. A mean level for each hormone was determined for the laying and non-laying periods of the summer (April-September), and for February. Means were comparable to those of other wild avian species and were significantly higher for the laying period than for the other 2 periods. The mean corticosterone level for February was higher than that for the non-laying summer period. Plasma from laying kestrels, unlike that from other avian species, required lipid removal before column chromatography. Of 2 lipid removal techniques compared, i.e. the cold methanol and hexane:methanol techniques, the latter proved superior.
journal_name
Steroidsjournal_title
Steroidsauthors
Rehder NB,Lague PC,Bird DMdoi
10.1016/0039-128x(84)90012-6subject
Has Abstractpub_date
1984-04-01 00:00:00pages
371-83issue
4eissn
0039-128Xissn
1878-5867pii
0039-128X(84)90012-6journal_volume
43pub_type
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