Development and predatory capacity of Chrysoperla externa (Neuroptera: Chrysopidae) larvae at different temperatures. Desarrollo y capacidad depredadora. This work aimed to elucidate the distribution of Chrysoperla externa haplotypes and investigate whether it exhibits structure based on genetic. Abstract. The dynamics of predation by the green lacewing Chrysoperla externa Hagen (Neuroptera: Chrysopidae) on Enneothrips flavens Moulton.
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Development and reproduction of Chrysoperla externa Neuroptera: Chrysopidae fed with Neotoxoptera formosana Hemiptera: Chrysopidae sobre Neotoxoptera formosana Hemiptera: We evaluated biological and reproductive aspects of Chrysoperla externa fed with the aphid Neotoxoptera formosana reared on Welsh onion Allium fistulosum. We observed duration of Regarding the adults, males and females showed an average survival probability of It is concluded that N.
Se concluye que N. The Welsh onion Allium fistulosum L. The aphid Neotoxoptera formosana Takahashi, Hemiptera: Aphididae is a cosmopolitan species found in several countries Blackman and Eastop It is one of the few species of aphids that can infest plants of the genus Allium Hori Its occurrence in Brazil was first reported by Souza-Silva and Ilharco Among the biological control agents of aphids that infest many species of cultivated plants, it is worthwhile highlight the insects of the family Chrysopidae Neuroptera.
Although there are no studies on all species of green lacewings, we can say they are predators whose larvae are generalist, passing through three instars feeding on a wide range of prey, being excellent predators of several species of aphids Principi and Canard ; Freitas and Fernandes ; Freitas ; Carvalho and Souza The species Chrysoperla externa Hagen Neuroptera: Chrysopidae is the most studied neuropteran predator in Brazil, occurring in diverse crops, with high predatory capacity.
Allied to these factors, this species is distinguished by its ease of laboratory rearing, high reproductive potential and no need of preys in adulthood Freitas ; Figueira et al.
Thus, this research aimed to evaluate the development of C. We used larvae of C. Aphids were collected in home garden plants and multiplied on Welch onion A. The plants were kept into a greenhouse and were renewed weekly or as needed in order to maintain a sufficient population density to perform the experiment. Evaluations on the immature stages of C.
Eggs with until 24 hours of age were individualized in cylindrical flat-bottomed tubes 2. The newly hatched larvae of C.
This quantity was determined in preliminary tests. Only nymphs of chrysoerla nd and 3 rd instar were provided to the larvae. All observations were made daily until adult emergence. The parameters evaluated in immature stage were: We used 40 repetitions of one individual for this experiment. Evaluations on the adult stage of C. For the study of adulthood, nine couples were formed from the emerged insects, which were individually caged in PVC cylinders 10cm in diameter and 10cm high, lined with white filter paper, which served as substrate for oviposition.
Water was supplied through a 10mL vial containing a cotton ball on the top. We calculated the mean and standard error for the duration and survival in each instar and for the pre-pupa and pupa, as well as for pre-oviposition periods, duration of the embryonic period and hatchability.
For the longevity of males and females and the average daily production of eggs, we calculated, respectively, the curves of survival chrysoperls and the curve of average oviposition according to the age of the females, using the free software R R Development Core Team The larval instars of C. The pre-pupa lasted 3. The observed sex ratio was approximately 0.
The non-accumulated survivals for the pre-pupa and pupa were The pre-oviposition period lasted 7. The average duration of oviposition per female was The curve with the daily average of eggs produced in relation to the age of C.
The average production of eggs was It was observed that the average production of eggs increased until the twentieth day, when it reached its peak, and thereafter steadily declined, equaling to the average initial production on the thirty-third chrysoperka of oviposition.
At the fortieth day, about half the number of females was ovipositing a small amount of eggs. The average hatchability was With respect to longevity, females of C.
Regarding the duration of larval instars, it was found to be higher in the present study than in previous chryysoperla in which authors fed C. Larval survival varies widely in literature; however, the survival observed here can be classified as very satisfactory. Aphididae raised in different cotton cultivars and acquired different results depending on the food substrate, with durations ranging between These results demonstrate that in addition to the species of aphid, host plant influences positively or negatively the performance of its predator.
Aphididae raised in corn plants, observed durations of 3.
Aphididae maintained on sorghum plants, found The above results show a faster development of C. Aphididaeas recorded by Bonani et al. For the pre-pupa and pupa stages, the results were similar to those found by Pessoa et al. These results show that, depending on the food provided to the larvae, the duration of the pre-pupa and pupa of C. This high survival is also found when other aphids are used as prey Fonseca et al. The total larva-adult survival was higher than The pre-oviposition period observed here was longer than the observed for adults obtained from larvae fed with other preys.
Aleyrodidae biotype B, and Bezerra et al. For oviposition period and egg laying, Santos et al.
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Nevertheless, the incubation period and hatchability showed values lower than those observed by Auad et al. Adult longevity was also close to the found in previous chrysooerla, tending to be lower. In both studies cited, there were also found differences in longevity between males and females.
However, the dhrysoperla refer to the average longevity and not the probability of survival as presented in this study, so these data should be compared with caution. It is concluded that the aphid N.
Acta Scientiarum Agronomy 27 2: Chrysopidae oriunda de larvas alimentadas com Planococcus citri Risso, Hemiptera: Chrysopidae alimentada com Planococcus citri Risso, Hemiptera: Pseudococcidae e Toxoptera citricida Kirkaldy, Hemiptera: Chrysopidae em diferentes presas. Development and consumption capacity of Chrysoperla externa Hagen Neuroptera, Chrysopidae fed with Cinara spp.
Hemiptera, Aphididae under three temperatures. Revista Brasileira de Zoologia 20 4: Chrysopidae alimentado com Schizaphis graminum Hemiptera: Neotropical Entomology 31 1: Novo manual de olericultura: Chrysopidae alimentada com Schizaphis graminum Rondani, Hemiptera: Aphididae em diferentes temperaturas. Seletividade de seis inseticidas utilizados em citros a pupas e adultos de Exetrna externa Hagen Neuroptera: Neotropical Entomology 33 3: Onion aphid Neotoxoptera formosana attractants, in the headspace of Allium fistulosum and A.
Journal of Applied Entomology 1: Chrysopidae alimentada com Rhopalosiphum maidis Fitch, Hemiptera: Chrysopidae alimentada com Aphis gossypii Glover, Hemiptera: Aphididae criado em quatro cultivares de algodoeiro.
Recent evolutionary history of Chrysoperla externa (Hagen ) (Neuroptera: Chrysopidae) in Brazil
Junk Publishers, The Hague. R Development Core Team A language and environment for statistical computing.
Transmission and translocation of Garlic Latent Virus in rakkyo Allium chinense. Proceedings chrysoeprla the Kansai Plant Protection Society 32 1: Services on Demand Article. English pdf Chrysopegla in xml format Article references How to cite this article Automatic translation Send this article by e-mail. Introduction The Welsh onion Allium fistulosum L. Materials and Methods Obtaining C. Results The larval instars of C. Discussion Regarding the duration of larval instars, it was found to be higher in the present study than in previous papers in which authors fed C.
Conclusions It is concluded that the aphid N.