scholarly journals Wolbachia pipientis associated to tephritid fruit fly pests: from basic research to applications

2018 ◽  
Author(s):  
Mariana Mateos ◽  
Humberto Martinez ◽  
Silvia B. Lanzavecchia ◽  
Claudia Conte ◽  
Karina Guillén ◽  
...  
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Population Control ◽  
Control Strategies ◽  
Basic Research ◽  
Cost Effective ◽  
Fruit Fly ◽  
Infection Prevalence ◽  
Agricultural Pests ◽  
Tephritid Species

AbstractMembers of the true fruit flies (family Tephritidae) are among the most serious agricultural pests worldwide, whose control and management demands large and costly international efforts. The need for cost-effective and environmentally-friendly integrated pest management (IPM) has led to the development and implementation of autocidal control strategies. Autocidal approaches include the widely used sterile insect technique (SIT) and the incompatible insect technique (IIT). IIT relies on maternally transmitted bacteria (namely Wolbachia), to cause a conditional sterility in crosses between released mass-reared Wolbachia-infected males and wild females, which are either uninfected or infected with a different Wolbachia strain (i.e., cytoplasmic incompatibility; CI). Herein, we review the current state of knowledge on Wolbachia-tephritid interactions including infection prevalence in wild populations, phenotypic consequences, and their impact on life history traits. Numerous pest tephritid species are reported to harbor Wolbachia infections, with a subset exhibiting high prevalence. The phenotypic effects of Wolbachia have been assessed in very few tephritid species, due in part to the difficulty of manipulating Wolbachia infection (removal or transinfection). Based on recent methodological advances (high-throughput DNA sequencing) and a breakthrough concerning the mechanistic basis of CI, we suggest research avenues that could accelerate generation of necessary knowledge for the potential use of Wolbachia-based IIT in area-wide integrated pest management (AW-IPM) strategies for the population control of tephritid pests.

scholarly journals Maleness-on-the-Y (MoY) orchestrates male sex determination in major agricultural fruit fly pests

2019 ◽  
Author(s):  
Angela Meccariello ◽  
Marco Salvemini ◽  
Pasquale Primo ◽  
Brantley Hall ◽  
Panagiota Koskinioti ◽  
...  
Keyword(s):  
Sex Determination ◽  
Control Strategies ◽  
Fruit Fly ◽  
Bactrocera Dorsalis ◽  
Agricultural Pests ◽  
Tephritid Species ◽  
Regulatory Module ◽  
Specific Proteins ◽  
Male Sex ◽  
Necessary And Sufficient

AbstractIn insects, rapidly evolving primary sex-determining signals are transduced by a conserved regulatory module producing sex-specific proteins that direct sex determination and sexual differentiation1-4. In the agricultural pest Ceratitis capitata (medfly), a Y-linked maleness factor (M) is thought to repress the autoregulatory splicing of transformer (Cctra), which is required in XX individuals to establish and maintain female sex determination5,6. Despite previous attempts of isolating Y-linked genes using the medfly whole genome, the M factor has remained elusive7. Here, we report the identification of a Y-linked gene, Maleness-on the-Y (MoY), and show that it encodes a small novel protein which is both necessary and sufficient for medfly male sex determination. Transient silencing of MoY in XY individuals leads to the development of fertile females while transient expression of MoY in XX individuals results in fertile males. Notably, a cross between these sex reverted individuals gives rise to both fertile males and females indicating that a functional MoY can be maternally transmitted. In contrast to the diversity of M factors found in dipteran species8-11, we discovered MoY orthologues in seven other Tephritid species spanning ∼111 millions of years of evolution (Mya). We confirmed their male determining function in the olive fly (Bactrocera oleae) and the oriental fruit fly (Bactrocera dorsalis). This unexpected conservation of the primary MoY signal in a large number of important agricultural pests12 will facilitate the development of transferable genetic control strategies in these species, for example sterile male releases or sex-ratio-distorting gene drives.

Fruit Fly Area-Wide Integrated Pest Management in Dragon Fruit in Binh Thuan Province, Viet Nam

2019 ◽  
pp. 343-347
Author(s):  
Nguyen T.T. Hien ◽  
Vu T.T. Trang ◽  
Vu V. Thanh ◽  
Ha K. Lien ◽  
Dang Đ. Thang ◽  
...  
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Fruit Fly ◽  
Viet Nam ◽  
Dragon Fruit

scholarly journals Effects of Different Water Regimes and Spacing on Insect Pest Infestation and Efficacy of Control Measures in Cucumber (Cucumis sativus)

2019 ◽  
pp. 1-8
Author(s):  
A. A. Oso ◽  
G. O. Awe
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Pest Control ◽  
Control Strategies ◽  
Insect Pest ◽  
Cultural Control ◽  
Irrigated Agriculture ◽  
Yield Attributes ◽  
Pest Infestation ◽  
And Control

Aim: Information on the influence of water availability during different seasons of rainfed or irrigated agriculture as it relates to insect pest population build-up in crops could assist in the development of integrated pest management. A study was therefore conducted to investigate effects of spacing, pest infestation and control on cucumber under rainfed and irrigated conditions. Place and Duration of Study: At the Teaching and Research Farm, Ekiti State University, Ado Ekiti, Nigeria during the 2016/2017 rainy and dry seasons. Methodology: The experiment was laid out using randomized complete block design (RCBD) in a split-plot arrangement in five replications, with spacing (60 x 60 cm, 60 x 90 cm and 60 x 120 cm) as the main plot treatments and the sub-plot treatments were different pest control strategies. The pest control strategies include synthetic insecticide (Lambda-cyhalothrin), botanical insecticide (Anogeissus leiocarpus) and control. Growth parameters and yield attributes were recorded. Insect pest occurrence, their build-up and percentage infestation on cucumber and the efficacy of the management strategies were monitored. Results: The results showed that yield was enhanced in irrigated system with the widest spacing of 60 x 120 cm botanical treatment interaction. Bemisia tabaci was the most prominent insect pest attacking cucumber under irrigated system. Conclusion: Other cultural control practices such as the use of trap crops with little or no financial implication should also be added to botanical pesticides as an integrated pest management tactic for effective management and control of the pest.

scholarly journals Integrated Pest Management (IPM) for Small-Scale Farms in Developed Economies: Challenges and Opportunities

Insects ◽  
2019 ◽  
Vol 10 (6) ◽  
pp. 179 ◽  
Author(s):  
Tessa R. Grasswitz
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Cost Effective ◽  
Small Scale ◽  
Scale Production ◽  
Small Farm ◽  
Farm Sector ◽  
Developed Economies ◽  
Challenges And Opportunities ◽  
The Usa

Small-scale farms are an important component of agricultural production even in developed economies, and have an acknowledged role in providing other biological and societal benefits, including the conservation of agricultural biodiversity and enhancement of local food security. Despite this, the small-farm sector is currently underserved in relation to the development and implementation of scale-appropriate Integrated Pest Management (IPM) practices that could help increase such benefits. This review details some of the characteristics of the small farm sectors in developed economies (with an emphasis on the USA and Europe), and identifies some of the characteristics of small farms and their operators that may favor the implementation of IPM. Some of the challenges and opportunities associated with increasing the uptake of IPM in the small-farm sector are discussed. For example, while some IPM tactics are equally applicable to virtually any scale of production, there are others that may be easier (or more cost-effective) to implement on a smaller scale. Conversely, there are approaches that have not been widely applied in small-scale production, but which nevertheless have potential for use in this sector. Examples of such tactics are discussed. Knowledge gaps and opportunities for increasing IPM outreach to small-scale producers are also identified.

Determinants of integrated pest management adoption for olive fruit fly (Bactrocera oleae) in Roudbar, Iran

2016 ◽  
Vol 84 ◽  
pp. 113-120 ◽  
Author(s):  
Mohammad Sadegh Allahyari ◽  
Christos A. Damalas ◽  
Mehdi Ebadattalab
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Fruit Fly ◽  
Bactrocera Oleae ◽  
Olive Fruit Fly ◽  
Olive Fruit

PEST CONTROL STRATEGIES: URBAN INTEGRATED PEST MANAGEMENT

1978 ◽  
pp. 215-234
Author(s):  
William Olkowski ◽  
Helga Olkowski ◽  
T. Drlik ◽  
N. Heidler ◽  
M. Minter ◽  
...  
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Pest Control ◽  
Control Strategies

A NEW MATHEMATICAL MODEL FOR OPTIMAL CONTROL STRATEGIES OF INTEGRATED PEST MANAGEMENT

2007 ◽  
Vol 15 (02) ◽  
pp. 219-234 ◽  
Author(s):  
XINZHU MENG ◽  
ZHITAO SONG ◽  
LANSUN CHEN
Keyword(s):  
Periodic Solution ◽  
Control Problem ◽  
Integrated Pest Management ◽  
Pest Management ◽  
Control Strategy ◽  
Impulsive Control ◽  
Control Strategies ◽  
Economic Damage ◽  
Pest Population ◽  
The Given

A state-dependent impulsive SI epidemic model for integrated pest management (IPM) is proposed and investigated. We shall examine an optimal impulsive control problem in the management of an epidemic to control a pest population. We introduce a small amount of pathogen into a pest population with the expectation that it will generate an epidemic and that it will subsequently be endemic such that the number of pests is no larger than the given economic threshold (ET), so that the pests cannot cause economic damage. This is the biological control strategy given in the present paper. The combination strategy of pulse capturing (susceptible individuals) and pulse releasing (infective individuals) is implemented in the model if the number of pests (susceptible) reaches the ET. Firstly, the impulsive control problem is to drive the pest population below a given pest level and to do so in a manner which minimizes a weighted sum of the cost of using the control. Hence, for a one time impulsive effect we obtain the optimal strategy in terms of total cost such that the number of pests is no larger than the given ET. Secondly, we show the existence of periodic solution with the number of pests no larger than ET, and by using the Analogue of the Poincaré Criterion we prove that it is asymptotically stable under a planned impulsive control strategy. Further, the period T of the periodic solution is calculated, which can be used to estimate how long the pest population will take to return back to its pre-control level. The main feature of the present paper is to apply an SI infectious disease model to IPM, and some pests control strategies are given.

scholarly journals Bridging the Information Gap with Cost-Effective Dissemination Strategies: The Case of Integrated Pest Management in Bangladesh

2013 ◽  
Vol 45 (4) ◽  
pp. 639-654 ◽  
Author(s):  
Leah M. Harris ◽  
George W. Norton ◽  
A.N.M. Rezaul Karim ◽  
Jeffrey Alwang ◽  
Daniel B. Taylor
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Interpersonal Communication ◽  
Programming Model ◽  
Cost Effective ◽  
Environmental Benefits ◽  
Agricultural Technologies ◽  
Farmer Field Schools ◽  
Transfer Programs ◽  
Effective Dissemination

Cost-effective extension strategies are needed to promote widespread adoption of agricultural technologies in developing countries. Integrated pest management (IPM) practices, for example, can offer economic, health, and environmental benefits but remain largely underused. This study evaluates the current IPM dissemination program implemented by the Bangladesh Department of Agricultural Extension and uses a linear programming model to examine alternative strategies to improve IPM adoption. Results suggest that technology transfer programs may increase their impact by reallocating funding from intensive but costly interpersonal communication methods (i.e., farmer field schools) to less intensive methods (i.e., mass media and field days) that reach broader audiences.

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