Parámetros biológicos y demograficos de áfidos (Hemiptera: aphididae) en variedades de colza canola (Brassica napus L.)
Myzus persicae (Sulz.), Brevicoryne brassicae L. and Lipaphis erysimi (Kalt.) are pests of oilseed rape-canola crops, Brassica napus L., as well as other cultivated crucifers. The aim of this study was to estimate the biological attributes and population parameters of aphids on the varieties I...
Guardado en:
| Publicado en: | Revista de la Facultad de Ciencias Agrarias |
|---|---|
| Autores principales: | , , , , , , , |
| Materias: | |
| Acceso en línea: | https://bdigital.uncu.edu.ar/fichas.php?idobjeto=4314 |
| Sumario: | Myzus persicae (Sulz.), Brevicoryne
brassicae L. and Lipaphis erysimi (Kalt.) are
pests of oilseed rape-canola crops, Brassica
napus L., as well as other cultivated crucifers.
The aim of this study was to estimate the
biological attributes and population parameters
of aphids on the varieties Impact and Teddy
under laboratory conditions. Aphids were
collected on a canola crop and were multiplied
in an insectary. For the study were reared
2 cohorts of 20 neonate females, for each aphid
species and canola cultivar, at 20 ± 1°C, 60-70%
relative humidity and 14:10 hs light dark cycle.
The main differences among aphids species
were observed in the extent of reproductive
and post-reproductive periods, longevity and
fecundity. M. persicae had the greatest longevity
and fertility, was the most long life and fecund
in Impact, while in Teddy the highest fecundity
was to L. erysimi and the highest longevity
to M. persicae. With regard to population
parameters, the highest net reproductive rate
(R0) was 58.43 (♀/♀/generation) for M. persicae
on Impact. Instead in Teddy R0 (63.17) was
bigger for L. erysimi. At Impact the greater
intrinsic rate of increase (rm) was for M. persicae
(0.24) and for L. erysimi in Teddy (0.29 ♀/♀/day).
These studies would indicate that, according to
the cultivated employed rapeseed cultivar, taking
into account the population growth rate of different
aphid species, it could infer the dominant aphid
species and the potential damage they would
cause to the rapeseed canola crop.
|
|---|
