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Abstract:

The density-dependence in parasitism by the robber fly Mallophora ruficauda (Diptera: Asilidae) on scarab beetle larvae (Coleoptera: Scarabaeidae) populations was studied in the present research. Mallophora ruficauda is a pestiferous species common in the open grasslands of the Pampas region of South America. Adults are predators of insects and larvae are solitary parasitoids of third instar larvae of several species of scarab beetle (Coleoptera: Scarabaeidae). In contrast with most studied host-parasitoid interactions, host searching by M. ruficauda is carried out by both larvae and adults. Typically, robber fly females lay eggs on tall grasses from where larvae drop to the ground, and attack hosts which are buried in the soil. We carried out our study at two spatial scales close to 14 apiaries located in the provinces of Buenos Aires and Entre Ríos (Argentina). We found that parasitism is density-independent at the larger spatial scale and inversely density-dependent at the smaller one. We also found that M. ruficauda selects Cyclocephala signaticollis among several scarab beetle species. Specificity is observed both at large and small spatial scales. We discuss the implications of both host specificity and host searching behaviour on the observed parasitism patterns. © 2010 Ecological Society of Australia.

Registro:

Documento: Artículo
Título:Spatial density-dependent parasitism and specificity in the robber fly Mallophora ruficauda (Diptera: Asilidae)
Autor:Castelo, M.K.; Corley, J.C.
Filiación:Departamento de Ecología, Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, 1428 Buenos Aires, Argentina
CONICET, Laboratorio de Ecología de Insectos, INTA EEA Bariloche, 8400 Bariloche, Río Negro, Argentina
Palabras clave:Parasitoid; Scarab beetle larvae; Scarabaeidae; Spatial scale; beetle; density dependence; fly; grassland; host specificity; host-parasitoid interaction; parasitism; spatial analysis; Argentina; Buenos Aires [Argentina]; Entre Rios; Pampas; Asilidae; Coleoptera; Cyclocephala; Diptera; Hexapoda; Mallophora ruficauda; Poaceae; Scarabaeidae
Año:2010
Volumen:35
Número:1
Página de inicio:72
Página de fin:81
DOI: http://dx.doi.org/10.1111/j.1442-9993.2009.02013.x
Título revista:Austral Ecology
Título revista abreviado:Austral Ecol.
ISSN:14429985
CODEN:AUECF
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14429985_v35_n1_p72_Castelo

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Citas:

---------- APA ----------
Castelo, M.K. & Corley, J.C. (2010) . Spatial density-dependent parasitism and specificity in the robber fly Mallophora ruficauda (Diptera: Asilidae). Austral Ecology, 35(1), 72-81.
http://dx.doi.org/10.1111/j.1442-9993.2009.02013.x
---------- CHICAGO ----------
Castelo, M.K., Corley, J.C. "Spatial density-dependent parasitism and specificity in the robber fly Mallophora ruficauda (Diptera: Asilidae)" . Austral Ecology 35, no. 1 (2010) : 72-81.
http://dx.doi.org/10.1111/j.1442-9993.2009.02013.x
---------- MLA ----------
Castelo, M.K., Corley, J.C. "Spatial density-dependent parasitism and specificity in the robber fly Mallophora ruficauda (Diptera: Asilidae)" . Austral Ecology, vol. 35, no. 1, 2010, pp. 72-81.
http://dx.doi.org/10.1111/j.1442-9993.2009.02013.x
---------- VANCOUVER ----------
Castelo, M.K., Corley, J.C. Spatial density-dependent parasitism and specificity in the robber fly Mallophora ruficauda (Diptera: Asilidae). Austral Ecol. 2010;35(1):72-81.
http://dx.doi.org/10.1111/j.1442-9993.2009.02013.x