Helicoverpa armigera Hübner (Lepidoptera: Noctuidae), the cotton bollworm were collected during Aug , in Paraná State (Londrina, Embrapa. Soybean. In March , the Old World bollworm, Helicoverpa armigera (Hübner), was reported in Brazil (Embrapa, ). On that occasion, specimens were collected in. Helicoverpa armigera has recently invaded South and Central America, da espécie Helicoverpa armigera no Brasil Planaltina: EMBRAPA.
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Long-range movements as an adaptive strategy in the genus Heliothis Lepidoptera: Implication for pest management. The total value of production potentially exposed to the pest was then derived by summing values for those cells that are climatically suitable to the pest i.
Helicoverpa armigera: current status and future perspectives in Brazil. – Portal Embrapa
National Center for Biotechnology InformationU. Wu K, Guo Y. In the Old World, the species has been a major pest of agriculture, helixoverpa and floriculture throughout its range Fig.
To characterise the threat posed by H. The importance of other transient migratory pests helicoverrpa this region, such as Diamondback moth Plutella xylostella [ 79 ] serves to underscore the potential pest impacts of transient pests originating in the southern United States and Mexico into these valuable high-latitude cropping regions.
Helicoverpa armigera: current status and future perspectives in Brazil.
Further spread westward and northwards through Peru, Ecuador, and Columbia, and northwards through Venezuela seems almost inevitable.
For ground nesting animals that are able to regulate their temperature environment somewhat, daily average temperatures can limit the ability of a population to persist [ 62 ]. Estimating these potential losses would be complicated by the presence of a number of pests in the USA that share a similar niche, including the closely related species H.
Agriculture, Ecosystems and Environment. The authors have declared that no competing interests exist. Whilst this may also be true of H. Data Availability All relevant data are within the paper and its Supporting Information files.
Reduced populations of H. Methods in Ecology and Evolution. Realised fecundity is a function of adult longevity generally 7—20 days in the laboratory e.
Although larvae can feed and survive on leaves of many hosts [ 15 ], they move to [ 282930 ], prefer to feed on [ 31 embrwpa, and do better in terms of survival, subsequent fecundity and other fitness parameters when feeding on flowers and fruit e. This lack of consistency precluded any meaningful integrated analysis. North American Plant Protection Organization. Asian Embeapa of Agricultural Sciences.
Department of Agriculture; Australian Journal of Entomology. Results Potential distribution The potential distribution, ignoring the distribution of specific crop hosts, based on EI suitable for persistent populations and GI A temporary seasonal range expansion agrees well with the known distribution of this species Fig.
If an incursion happened as a result of an isolated, low frequency human-mediated dispersal event, then an eradication could feasibly be contemplated. Given the known migratory ability of H. Whereas the original modelling attempted to indicate both persistent and ephemeral habitat through a positive EI value, in the present model we define these two types of habitat explicitly using a combination of EI and GI A values.
It is a chance to fully implement IPM in Brazil as it has never been done or seen before in the history of tropical agriculture. It may even be in the interests of the North Armigeta countries to co-invest in biological control and spread monitoring programmes in Central America and the Caribbean.
Accessed Apr Economic importance of Heliothis spp. The results of this process for each of the irrigation scenarios were combined, drawing on the results for the irrigated scenario where the GMIA5 dataset indicated that irrigation was practiced, and the natural rainfall scenarios elsewhere.
Model parameters were adapted from Zalucki and Furlong [ 12 ]. Should it spread further into these areas it is likely that H. The CLIMEX model has not been calibrated for insect abundance or crop losses as a function of climate suitability as was done for Thaumetopoea pityocampa [ 70 ].
Noctuidae using demographic parameters and nutritional indices. Our objective is to detail areas at risk in North and South America at a fine spatial scale, discuss the risk of spread and impacts, and suggest interim mitigation armiegra to delay the apparently inevitable invasion of North America. Erjun Ling, Academic Editor.
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Larval sampling and host plant relationships during winter and spring. During the preparation of this paper, the distribution maps for H. Linking climate suitability, spread rates and host-impact when estimating the potential costs of invasive pests.
Cold hardiness of Helicoverpa zea Lepidoptera: Pest risk assessment of insects in sea cargo containers. Helicoevrpa is unclear if H. Australian Journal of Agricultural Research. Nonetheless, the modelled potential distribution Fig. Potential global distribution of Helicoverpa armigeramodelled using CLIMEX, taking into account climate suitability, irrigation patterns, and the existence of suitable crop hosts. Abundance of overwintering pupae and the spring generation of Helicoverpa spp.
Empirical analysis of pest data routinely collected from agricultural crops.