育雛期におけるウミネコ糞中コルチコステロンの変動
Contents
1. 6 p lt 0 0012. 36 49 54 2008 E H 19 1 2 Gwinner E 2003 Circannual rhythms in birds Curr Opin Neurobiol 13 770 778 1995 23 57 62 Landys MM Ramenofsky M Wingfeld JC 2006 Actions of glucocorticoids at a sea sonal baseline as compared to stres
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5. 101 8310 1 8 13 252 8510 1866 2008 9 30 1Department of Biology Nihon University School of Dentistry 2Division of Functional Morphology Dental research center Nihon University School of Dentistry 1 8 13 Kanda surugadai Chiyoda ku Tokyo 101 8310 Japan 3Department of Animal Resource Science College of Bioresource Science Nihon University 1866 Kameino Fujisawa City Kanagawa 252 8510 Japan 36 49 54 2008
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7. 85X60 mm 2 60C 48 15X150 mm 2 ml 20 4 C 3 000 rpm 20 2 ml 2 ml 4 C 3 000 rpm 20 10X70 mm 60C
8. 1ml 150 mM NaCl 10 mM pH7 5 0 5ml 3 Amersham BioScience NJ USA Rat corticosterone assay sys tem RPA548 251 2 11 2 4 1 ARC 1000 M Cayman Chemi cal MI USA Testosterone EIA Kit
9. 36 49 54 2008 3 Changes in fecal corticosterone concentrations in brooding period of the Black tailed Gulls Larus crassirostris Abstract The present research focused in the assumption that for general avian species departure from the breeding ground after breeding may inflict stresses The amount of fecal corticoster one of the Black tailed Gulls was measured starting from nesting to fledging to obtain an index to the magnitude of stresses The result revealed statistically significant peaks of corticosterone at egg laying and fledging periods The correlative analysis of the above data and the testosterone data collected as another index suggested the corticosterone regulation shifted during the period between egg laying and incubation and also between brooding and fledging This phenomenon can be interpreted as reflecting strong stresses manifesting themselves in males by territorial defense and mate guarding during the first half of the breeding period and in the latter half both males and females appeared to be under strong stresses caused by brooding No apparent hormonal changes at the time of fledging were detected in the present experiment but the possibilities for the birds stressful experience Megumi Sato Keiko Yashima Masakatsu Shio
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13. p 0 05 2 95 Smirnov Grubbs p 0 05 1 Kruskal Wallis p 0 001 4 7 2 Smirnov Grubbs 5 4 2 6 8 1 1 2 36 49 54 2008 Testosterone ng g fice Testosterone ng g fice Testosterone ng g fice 1000 00 a 100 00 Pk es gt 10 00 8 2 sd 1 00 ny a lt 0 10
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16. r P 1994 Communication in Vertebrate aggression and reproduction the role of hormone In The Physiology of Reproduction 2nd ed Konbil E Neill JD eds Raven Press New York 303 342 1997 25 57 85 2008 39 112 116 Dehnhard M Schreer A Krone O Jewgenow K Krause M Grossmann R 2003 Measure ment of plasma corticosterone and fecal glucocorticoid metabolites in the chicken Gallus domesticus the great cormorantsu Phalacrocorax carbo and the goshawk 4c cipiter gentilis Gen Comp Endorinol 131 345 352
17. s related levels in the regulation of periodic life processes Gen Comp Endocrinol 148 132 149 McEwen BS Wingfeld JC 2003 The con cept of allostasis in biology and biomedicine Horm Behay 43 2 15 Dawson A 2006 Control of molt in birds Association with prolactin and gonadal regreSsion in starlings Gen Comp Endocrinol 147 314 322 2007 35 49 56 1996 24 49 55 1984 10 11 12 13 14 15 5 INewcra for Windows 1999 http reproduction jp member newcra htm 1996 76 79 Sakai H Ishii S S 1986 Annual cycles of plasma gonadotropins and sex steroids in Japanese common pheasants Phasianus col chicus versicolor Gen Comp Endocrinol 63 275 283 Wingfield JC Whaling CS Marle
18. ya Shuichi Wakabayashi and Hidetsugu Sakai were expected Key words Black tailed Gull breeding ground corticosterone fledging stress 1 4 zo 7222s ml 2 39
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