title: Diurnal variations in circulating estradiol, testosterone, melatonin and harderian gland porphyrin concentration in Indian palm squirrel, Funambulus pennanti.
abstract: A two-peak cyclicity in the plasma level of melatonin, estradiol/testosterone and Harderian porphyrin was noted in F. pennanti. An inverse relationship of Harderian porphyrin with plasma melatonin and a direct relation of it with plasma estradiol/testoserone level were also observed, suggesting that the variation of Harderian, porphyrin concentration may be under the control of both, circulating melatonin and gonadal steroids.
authors.affiliation: Centre of Advanced Study in Zoology, Banaras Hindu University, India.
authors.forename: C
authors.initials: C
authors.lastname: Haldar
authors.forename: S
authors.initials: S
authors.lastname: Dubey
mesh_terms: D000818:Animals; D002940:Circadian Rhythm / Q000502:physiology*; D004958:Estradiol / Q000097:blood*; D005260:Female; D006243:Harderian Gland / Q000378:metabolism; D008297:Male; D008550:Melatonin / Q000097:blood*; D011166:Porphyrins / Q000378:metabolism*; D012589:Sciuridae / Q000097:blood*; D013739:Testosterone / Q000097:blood*
chemical_list: D011166:Porphyrins; D013739:Testosterone; D004958:Estradiol; D008550:Melatonin