INVESTIGADORES
OVRUSKI ALDERETE Sergio Marcelo
artículos
Título:
Relative abundance of Ceratitis capitata and Anastrepha fraterculus (Diptera: Tephritidae) in diverse host species and localities of Argentina
Autor/es:
F SEGURA, DIEGO; VERA, T.; CAGNOTTI, C. L.; VACCARO, N.; OLGA DECOLL,; SERGIO OVRUSKI,; L CLADERA, JORGE
Revista:
ANNALS OF THE ENTOMOLOGYCAL SOCIETY OF AMERICA
Editorial:
Allen Press, Inc.
Referencias:
Lugar: KS, USA; Año: 2006 vol. 99 p. 70 - 83
ISSN:
0013-8746
Resumen:
Two fruit ßy species (Diptera: Tephritidae) of economic importance occur in Argentina,
the Mediterranean fruit ßy, Ceratitis capitata (Wiedemann), and Anastrepha fraterculus (Wiedemann).
Here, we compared the relative abundance of these fruit pests in 26 fruit species sampled from
62 localities of Argentina in regions where C. capitata and A. fraterculus coexist. In general, C. capitata
was predominant over A. fraterculus (97.46% of the emerged adults were C. capitata), but not always.
Using the number of emerged adults of each species, we calculated a relative abundance index (RAI)
for each host in each locality. RAI is the abundance of C. capitata relative to the combined abundance
ofA. fraterculus andC. capitata. Some families of fruit species were more prone to show high (Rutaceae
and Rosaceae) or low (Myrtaceae) RAI values, and also native plants showed lower RAI values than
introduced plants. RAI showed high variation among host species in different localities, suggesting a
differential use of these hosts by the two ßies. There were localities where A. fraterculus was not found
in spite of suitable temperature and the presence of hosts. Most host species showed little variation
in RAI among localities, usually favoring C. capitata, but peach, grapefruit, and guava showed high
variation. This suggests that these fruit species are suitable for both fruit ßies but more favorable to
one or the other, depending on local environmental conditions (e.g., relative humidity and degree of
disturbance) of each locality.