Population dynamics of larval stages of Tauriphila risi Martin and Erythemis attala (Selys) in Punta Lara gallery forest, Buenos Aires, Argentina (Anisoptera: Libellulidae)
Laral populations of the 2 species were studied in a lentic freshwater environment. 13 larval instars were recognized from plots of head width and length of wig-pads.Density, populations dynamics, age, structure, flying period and winter quiescence were analysed. Both uni- and semivoltine individual...
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2000
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/104377 http://hdl.handle.net/11336/33911 http://natuurtijdschriften.nl/search?identifier=592333 |
| Aporte de: |
| Sumario: | Laral populations of the 2 species were studied in a lentic freshwater environment. 13 larval instars were recognized from plots of head width and length of wig-pads.Density, populations dynamics, age, structure, flying period and winter quiescence were analysed. Both uni- and semivoltine individuals were found. Microhabitat differences were found beteen the 2 spp, T. risi preferring Pistia stratiotes and Hydrocotyle ranunculoides, whereas E. attala preferred lemnaceas. A life table was constructed for T. risi, which showed mortality rate maxima at hatching and at 10 and 23 months. |
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