, Volume 45, Issue 2, pp 202–208 | Cite as

Optimizing development time in a seasonal environment: The ‘ups and downs’ of clinal variation

  • Derek Roff


This paper explores the problem of adapting development time to changes in the length of time conditions are favourable for growth and reproduction (‘season length’). It is shown that systematic changes in season length along some gradient such as latitude can generate either simple clines in development time or ‘saw-tooth’ clines. The relationship between development time and body size gives rise to a corresponding variation in body size. The generation of a ‘saw-tooth’ cline does not require sharp environmental changes. Both types of clinal variation are observed in insects.


Body Size Development Time Environmental Change Clinal Variation Systematic Change 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag 1980

Authors and Affiliations

  • Derek Roff
    • 1
  1. 1.Research and Resource ServicesDepartment of Fisheries and OceansSt. John's

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