- Title
- Trophic ecology of adult male O donata. II. D ietary contributions of aquatic food sources
- Creator
- Chari, Lenin D, Moyo, Sydney, Richoux, Nicole B
- Subject
- To be catalogued
- Date
- 2018
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/456403
- Identifier
- vital:75510
- Identifier
- xlink:href="https://doi.org/10.1111/een.12459"
- Description
- 1. Insects that emerge from rivers provide nutritional subsidies to local riparian predators. Adult damselflies and dragonflies often benefit from aquatic resources, but their high mobility and evasiveness have made it difficult to monitor their diets. 2. A dual fatty acid and stable isotope analysis approach was used to investigate the links between Odonata size and behaviour with proportions of their aquatically derived nutri-tional sources. Additionally, the study investigated the variation in die-tary contributions of aquatic food sources to Odonata between two sec-tions of a river, each with different aquatic productivity rates. 3. Varia-tions in body size and foraging method of Odonata in the Kowie River (South Africa) contributed to differences in the contributions of aquatic food sources to their diets. Large Odonata that consumed prey in flight had smaller proportions of aquatic indicator fatty acids and stable iso-tope‐generated proportions of aquatic food sources than did the smaller Odonata that consumed prey from perches. 4. There was a considera-ble amount of interspecific variation in indicators of aquatic feeding, but Odonata at an upstream site had smaller proportions of aquatic indica-tors than those at a downstream site which had higher insect emer-gence rates. 5. The findings of this study contribute information on the dynamics of feeding ecology among adult Odonata, and the substantial contributions of aquatic prey (>80% of total diet in some cases) indicat-ed that cross‐boundary trophic linkages via odonates are strong in the Kowie River.
- Format
- computer, online resource, application/pdf, 1 online resource (13 pages), pdf
- Publisher
- Wiley
- Language
- English
- Relation
- Ecological Entomology, Chari, L.D., Moyo, S. and Richoux, N.B., 2018. Trophic ecology of adult male O donata. II. D ietary contributions of aquatic food sources. Ecological entomology, 43(1), pp.15-27, Ecological Entomology volume 43 number 1 p. 15 2018 1365-2311
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Wiley Library Online Terms of Use Statement (https://onlinelibrary.wiley.com/terms-and-conditions)
- Rights
- Closed Access
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Collections
Richoux, Nicole Bertine (Assoc Prof)
RU Department of Zoology and Entomology
SDG 15. Life On Land
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details | SOURCE1 | Trophic ecology of adult male Odonata II Dietary contributions of aquatic food.pdf | 653 KB | Adobe Acrobat PDF | View Details |