Olive Fruit Fly (Diptera: Tephritidae) Populations in Relation to Region, Trap Type, Season, and Availability of Fruit

Yokoyama, Victoria Y.; Miller, Gina T.; Stewart-Leslie, Judy; Rice, R. E.; Phillips, Phil A.

doi:10.1603/0022-0493-99.6.2072

Cited by 22 publications

(4 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This contrasts with the results of Papadopoulos & Katsoyannos (2003) and the recent findings of Ali et al (2016), which reported high levels of natural parasitism under Mediterranean climate conditions, but it concurs with their observation that natural populations are only present in the field during the summer, indicating only one generation per year, under the most favourable conditions. Similar results have been reported from other parasitoids of fruit flies, such as the braconid Psyttalia concolor (Sz epligeti), which displays higher parasitism rates on Bactrocera oleae (Rossi) under warm and wet conditions that support growth and development of both parasitoids and hosts (Yokoyama et al, 2006(Yokoyama et al, , 2008Yokoyama & Miller, 2007). Based on previous experiments on the optimal development of this parasitoid, such as suitable host fruits or parasitoid/host ratios (Andleeb et al, 2010;Hosni et al, 2011;de Pedro et al, 2013ade Pedro et al, ,b, 2016de Pedro et al, , 2017, an experiment was designed to investigate the variation in parasitic activity of A. daci over time.…”

Section: Discussionsupporting

confidence: 83%

Parasitism of Aganaspis daci against Ceratitis capitata under Mediterranean climate conditions

Pedro

Beitia

Sabater-Muñoz

et al. 2017

Entomologia Exp Applicata

View full text Add to dashboard Cite

The effect of environmental factors is essential to the success of parasitoids as biological control agents, as it determines their foraging activity, development, and survival. The larval-pupal parasitoid wasp Aganaspis daci (Weld) (Hymenoptera: Figitidae) is known to have a very low fertility (i.e., offspring production) in the field in certain Mediterranean areas, probably due to its inability to efficiently oviposit under such climatic conditions. In this study, the percentage of parasitism and induced mortality (mortality of host pupae attributed to parasitoids, from which adults do not emerge) caused by this wasp to the Mediterranean fruit fly (medfly), Ceratitis capitata (Wiedemann) (Diptera: Tephritidae), was assessed under field conditions across 1 year, using medfly-infested apples and parasitoid-confined release in a lemon orchard of southeastern Spain. As A. daci is known to have very few emergences in the field, fertility was assessed in the laboratory from parasitized pupae recovered from the field. We found average parasitism rates of 27% and high induced mortality rates of 66% under field conditions. Consequently, medfly population reduction (total mortality of C. capitata caused by A. daci, i.e., induced mortality + % parasitism) was, on average, 87%. Parasitism and induced mortality varied throughout the year, depending on the average temperature and relative humidity. The interaction of these factors resulted in the highest parasitism rates at low mean temperature and humidity values; likewise, the highest percentages of induced mortality were obtained with a combination of high mean temperature and low mean humidity values. In conclusion, A. daci may exert a strong impact on medfly populations, being a good candidate for inundative field releases for the management of C. capitata in the Mediterranean Basin.

show abstract

Section: Discussionsupporting

confidence: 83%

Parasitism of Aganaspis daci against Ceratitis capitata under Mediterranean climate conditions

Pedro

Beitia

Sabater-Muñoz

et al. 2017

Entomologia Exp Applicata

View full text Add to dashboard Cite

show abstract

“…The olive fruit fly is a cosmopolitan olive pest (Tzanakakis, 2006), also occurring in California (Nardi et al, 2005;Yokoyama et al, 2006) where current management strategies rely on frequent applications of GF-120 . Olive was used as the tested agroecosystem, with the olive fruit fly, Bactrocera oleae (Rossi) (Diptera: Tephritidae), as the pest targeted by GF-120 applications.…”

Section: Introductionmentioning

confidence: 99%

Honeydew and insecticide bait as competing food resources for a fruit fly and common natural enemies in the olive agroecosystem

Wang

Johnson

Opp

et al. 2011

Entomologia Experimentalis Et Applicata

View full text Add to dashboard Cite

Honeydew from phloem-feeding insects and fruit fly insecticidal baits may serve as adult food resources for some insect species. In California (USA) olive orchards, the black scale [Saissetia oleae (Olivier) (Hemiptera: Coccidae)] is a common honeydew producer, and spinosad-based fruit fly bait (GF-120) is used to control the olive fruit fly [Bactrocera oleae (Rossi) (Diptera: Tephritidae)]. We investigated the effects of black scale honeydew and GF-120, as food resources, on adult foraging behaviour and survival of the olive fruit fly and two parasitoids in the olive agroecosystem: Scutellista caerulea (Fonscolombe) (Hymenoptera: Pteromalidae), a natural enemy of black scale, and Psyttalia humilis (Silvestri) (Hymenoptera: Braconidae), a parasitoid of the fruit fly. In food choice tests, female flies did not show a preference between GF-120 bait and honeydew, whereas male flies and the parasitoids we tested preferred honeydew. Adults of the three insect species readily fed on honeydew, but the natural enemies never (P. humilis) or rarely (S. caerulea) fed on GF-120 bait. Olfactometer tests further confirmed that the tested natural enemies were not attracted to GF-120 bait. The presence of honeydew significantly reduced fruit fly mortality when both honeydew and GF-120 were provided, compared with GF-120 given alone. A single meal of honeydew increased longevity in all insect species tested. The mean longevities of honeydew-fed insects were not significantly different from those feeding on clover honey. Our results suggest that the presence of honeydew would benefit the three insect species and may reduce the efficacy of GF-120 for fruit fly control because of preference of honeydew rather than fruit fly bait as a food resource.

show abstract

“…In most cases, the greatest damage occurs as the fruit begins to soften and turns color, from September to November. Olive fruits that are left on the tree, that are not harvested or are left to fall naturally, and then processed to oil, also affect the activity of olive fruit flies in the period from late autumn to early spring .…”

Section: Introductionmentioning

confidence: 99%

“…Numerous studies reported that the model of the early harvest reduces infection and damage of the olive fruit fly at the most possible lowest level. Optimal harvesting time is the most important factor that determines the olive oil quality and quantity .…”

Section: Introductionmentioning

confidence: 99%

Reduction of olive fruit fly damage by early harvesting and impact on oil quality parameters

Rojnić¹,

Bažok

Barčić³

2014

Euro J Lipid Sci & Tech

View full text Add to dashboard Cite

Olive fly population was monitored weekly on two olive cultivars (Buža and Istarska bjelica), from June until mid October, in Rovinj and Livade (Istria, Croatia). The number of eggs, larvae, and pupae was established and the total and active infestation was calculated. The fruit infestations for early and for late harvesting were obtained based on the calculated regression equation. For the prediction of the changes in the oil quality parameters linear regression slopes, obtained by Koprivnjak et al., were used. We established a strong positive correlation between DD accumulation and cumulative capture of flies, as well as with the total and active fruit infestations. According to obtained results it can be stated that I. bjelica is less sensitive to decrease in total phenols amount, to increase in free fatty acids mass ratio and to increase in peroxide values comparing to Buža. Moreover, the differences in investigated parameters between earlier and late harvesting dates in I. bjelica are lower due to lower infestation predicted for both harvesting dates and due to lower sensitivity to the changes in quality parameters. Therefore, early harvesting date as a model for preventing fruit damage and as a model for preventing negative change in oil quality parameters is a valid tool. However, the effectiveness of this model could also depend on the characteristics of olive cultivar. Practical applications: Understanding the factors that affect the olive fly attack is the basis of scientific and practical interest in the production of olives and olive oil. Research of monitoring methods allows reliable forecasting and determining protection measures. Knowledge about this topic could contribute to the reduction of insecticides use and to the improvement of quality and food safety concept in olive oil production. Damaged olive fruits are proved to directly affect the quantitative and qualitative properties of olive oils. The most important fruit damage is caused by the olive fly (Bactrocera oleae Gmelin).

show abstract

Olive Fruit Fly (Diptera: Tephritidae) Populations in Relation to Region, Trap Type, Season, and Availability of Fruit

Cited by 22 publications

References 7 publications

Parasitism of Aganaspis daci against Ceratitis capitata under Mediterranean climate conditions

Parasitism of Aganaspis daci against Ceratitis capitata under Mediterranean climate conditions

Honeydew and insecticide bait as competing food resources for a fruit fly and common natural enemies in the olive agroecosystem

Reduction of olive fruit fly damage by early harvesting and impact on oil quality parameters

Contact Info

Product

Resources

About