uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Predator-induced spine length and exocuticle thickness in Leucorrhinia dubia (Insecta: Odonata): a simple physiological trade-off?
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Animal Ecology.
2009 (English)In: Ecological Entomology, ISSN 0307-6946, E-ISSN 1365-2311, Vol. 34, no 6, 735-740 p.Article in journal (Refereed) Published
Abstract [en]

1. Morphological defence structures evolve against predators but are costly to the individual, and are induced only when required. A well-studied example is the development of longer abdominal spines in dragonfly larvae in the presence of fish. Numerous attempts to discover trade-offs between spine size and behaviour, development time or body size have, however, produced little evidence. 2. We considered a physiological trade-off. Spines consist of cuticle and using material to build longer structures may result in less material remaining elsewhere. We therefore measured exocuticle thickness at nine locations on Leucorrhinia dubia larvae from habitats with and without fish. 3. Our results show a significant effect of the interaction between fish presence and spine length on head and fore leg exocuticle thickness. Relative thickness increased with relative length of lateral spine 9 in the absence of fish, whereas no such relationship existed with fish. Hence, synthesis and secretion of cuticle material occur as a trade-off when larvae react to fish presence. 4. We assume the mechanism to be a selective synthesis of material with different responses in different parts of the larval body. These findings offer a new angle to the fish/spine trade off debate.

Place, publisher, year, edition, pages
2009. Vol. 34, no 6, 735-740 p.
Keyword [en]
Adaptive phenotypic plasticity, cuticle formation, dragonfly, fish presence, induced defence, morphology
National Category
Biological Sciences
URN: urn:nbn:se:uu:diva-127436DOI: 10.1111/j.1365-2311.2009.01129.xISI: 000271495700009OAI: oai:DiVA.org:uu-127436DiVA: diva2:330046
Available from: 2010-07-14 Created: 2010-07-13 Last updated: 2010-07-14Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
Animal Ecology
In the same journal
Ecological Entomology
Biological Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 177 hits
ReferencesLink to record
Permanent link

Direct link