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- Title
Differential Growth in Body and Chela Size Following Molts to Form I and Form II in the Crayfish, Orconectes Rusticus (Decapoda, Cambaridae).
- Authors
Tierney, Ann Jane
- Abstract
The presence of two male morphs in crayfishes of the family Cambaridae is well established, but the selective value of this trait is unknown. Measurements of growth following molts to Form I and Form II were used to examine the hypothesis that alternating between the two molts may serve as an adaptation allowing animals to efficiently increase overall body size. The results revealed that the change in carapace length was significantly greater in animals molting to Form II, whereas changes in chela length and width were significantly greater in animals molting to Form I. These differences allow animals to maximally increase body length when molting to Form II and maximally increase chela size when molting to Form I.
- Subjects
CRAYFISH; ORCONECTES; ASTACIDAE; ECDYSIS; MOLTING; BEHAVIOR
- Publication
Crustaceana, 2009, Vol 82, Issue 12, p1527
- ISSN
0011-216X
- Publication type
Article
- DOI
10.1163/001121609X12475745628504