Latitudinal variation in photoperiodic response of the three-spined stickleback Gasterosteus aculeatus in western North America

Reproductive maturation in both male and female three‐spined stickleback Gasterosteus aculeatus was strongly photoperiodic in a northern population (Alaska, 61° N) but not in a southern population (Oregon, 43° N) from western North America. Increasing reliance on photoperiod with increasing latitude...

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Bibliographic Details
Published in:	Journal of fish biology Vol. 75; no. 8; pp. 2075 - 2081
Main Authors:	Yeates-Burghart, Q. S., O'Brien, C., Cresko, W. A., Holzapfel, C.M., Bradshaw, W. E.
Format:	Journal Article
Language:	English
Published:	Oxford, UK Blackwell Publishing Ltd 01-11-2009
Subjects:	Alaska Animals biogeography Brackish evolution Female Freshwater Gasterosteus aculeatus Geography kidney Male Marine Oregon Photoperiod seasonal development sexual dimorphism Sexual Maturation - physiology Smegmamorpha - growth & development Smegmamorpha - physiology Oregon Alaska USA, Alaska
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Summary:	Reproductive maturation in both male and female three‐spined stickleback Gasterosteus aculeatus was strongly photoperiodic in a northern population (Alaska, 61° N) but not in a southern population (Oregon, 43° N) from western North America. Increasing reliance on photoperiod with increasing latitude is a general phenomenon among vertebrates, and is probably due to the anticipation of a narrower window of opportunity for reproduction and development at higher latitudes.
Bibliography:	ArticleID:JFB2418 ark:/67375/WNG-VHJFMMS5-5 istex:BEB54AD0DA88A0B20F6C7CC13D285EC749FF09A2 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0022-1112 1095-8649
DOI:	10.1111/j.1095-8649.2009.02418.x