I address variability of giving-up time of a sit-and-wait forager in a stochastic environment. Behavioral variability is considered as an essential unavoidable feature of animals. In a stochastic environment, this unavoidable behavioral variability will increase. Thus, the existence of some behavior
✦ LIBER ✦
Optimizing development time in a seasonal environment: The ‘ups and downs’ of clinal variation
✍ Scribed by Derek Roff
- Publisher
- Springer-Verlag
- Year
- 1980
- Tongue
- English
- Weight
- 794 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0029-8549
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✦ Synopsis
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.
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Kinya Nishimura
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Article
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1999
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Elsevier Science
🌐
English
⚖ 144 KB