Artículo
The effect of prey density on the developmental time of larvae of an aquatic beetle: Tropisternus setiger (Insecta, Coleoptera: Hydrophilidae)
Fecha de publicación:
12/2007
Editorial:
Springer
Revista:
Hydrobiologia
ISSN:
0018-8158
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Predaceous larvae of the water scavenger beetle Tropisternus setiger (Germar) are common inhabitants of variable environments in which prey availability may vary widely. We conducted laboratory experiments to assess the effect of prey density on developmental times and survivorship of the preimaginal stages of T. setiger. We also examined the effect of the number of consumed prey on the larval size of instar III. Four different prey densities (one, two, four, and eight preys a day) were tested and both developmental time and survivorship differed significantly among them. Larvae fed one or two preys daily showed a longer developmental time and a lower survivorship than larvae fed four or eight preys a day. Moreover the consumption of four preys a day increased larval developmental success, and to consume one prey a day affected survivorship through the larval period. On the other hand, prey density had no effect on the final larval size.
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Pereyra Villaurreta, Maria Daniela Renée; Archangelsky, Miguel; The effect of prey density on the developmental time of larvae of an aquatic beetle: Tropisternus setiger (Insecta, Coleoptera: Hydrophilidae); Springer; Hydrobiologia; 586; 1; 12-2007; 367-372
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