Season, Hour of Release and Holding Time as Determinants of Persistence of Mass Reared, Sterilized Mexican Fruit Flies (Diptera: Tephritidae) at a Release Site

2002 ◽  
Vol 37 (1) ◽  
pp. 41-47
Author(s):  
Donald B. Thomas
Keyword(s):  
Release Site ◽  
Fruit Flies ◽  
Target Site ◽  
Holding Time ◽  
Anastrepha Ludens ◽  
Temperature Extremes

Persistence of mass-reared, radiosterilized Mexican fruit flies, Anastrepha ludens (Loew), released at a target site was measured by trap-back. Released flies persisted in greater numbers during the winter months, with lowest numbers recovered in the summertime. Nocturnal releases were equally effective as morning releases in terms of persistence. Afternoon releases yielded better results in the winter but should be avoided in summer. Lowest persistence occurred in months with temperature extremes.

Bait Stations for Control of Mexican Fruit Flies (Anastrepha ludens), First Year

2019 ◽  
pp. 129-140
Author(s):  
Hugh Conway ◽  
Guadalupe Gracia ◽  
Pedro Rendón ◽  
Christopher Vitek
Keyword(s):  
Fruit Flies ◽  
Anastrepha Ludens ◽  
First Year ◽  
Bait Stations

scholarly journals Biological attributes of diapausing and non-diapausing Doryctobracon areolatus (Hymenoptera, Braconidae), a parasitoid of Anastrepha spp. (Diptera, Tephritidae) fruit flies

2020 ◽  
Vol 78 ◽  
pp. 41-56
Author(s):  
Jassmin Cruz-Bustos ◽  
Pablo Montoya ◽  
Gabriela Pérez-Lachaud ◽  
Javier Valle-Mora ◽  
Pablo Liedo
Keyword(s):  
Female Offspring ◽  
Developmental Time ◽  
Fruit Flies ◽  
Pupal Weight ◽  
Adult Longevity ◽  
Anastrepha Ludens ◽  
Starvation Resistance ◽  
Flight Ability ◽  
Laboratory Colony ◽  
Biological Attributes

Doryctobracon areolatus (Szépligeti), a solitary endoparasitoid native to the Neotropics, attacks eggs and early instar larvae of Anastrepha fruit flies, and can enter diapause under tropical and subtropical conditions. We aimed to test if biological attributes, such as size, flight ability, starvation resistance, longevity and fecundity of diapausing individuals differ from those of non-diapausing ones. Parasitoids were obtained from a laboratory colony reared on Anastrepha ludens (Loew) larvae. Parasitized host puparia were sorted in two cohorts according to their diapause condition. Developmental time from egg to adult ranged from 18 to 31 days in non-diapausing parasitoids, and 70 to 278 days for diapausing individuals. Pupal weight and adult measurements were higher in non-diapausing than in diapausing parasitoids. There were no differences in adult longevity, starvation resistance, and emergence between diapausing and non-diapausing wasps. Flight ability and fecundity rates were greater in the non-diapausing than in the diapause cohort. The proportion of female offspring was greater in the non-diapausing cohort (42.5%), whereas in the diapausing cohort the male offspring proportion was greater (62.4%). Both cohorts produced diapause offspring, but the non-diapausing cohort produced more (26.6%) than the diapausing one (9.1%). Maternal age had a significant effect on the proportion of diapause offspring: in 26 to 34 days old non-diapausing females, 78.9% of their offspring entered into diapause. These results confirmed that diapause affects the biological attributes of D. areolatus. The observed differences contribute to better understand the diapause influence on the colonization and rearing process of this species and its use as biocontrol agent.

Release of sterile Queensland fruit fly, Bactrocera tryoni (Froggatt) (Diptera: Tephritidae), at Sydney, Australia

2003 ◽  
Vol 43 (5) ◽  
pp. 519 ◽  
Author(s):  
B. C. Dominiak ◽  
A. E. Westcott ◽  
I. M. Barchia
Keyword(s):  
Release Site ◽  
Fruit Fly ◽  
Fruit Flies ◽  
Strong Wind ◽  
Distribution Characteristics ◽  
Bactrocera Tryoni ◽  
North East ◽  
The North ◽  
Adverse Weather ◽  
Sydney Australia

Four releases of sterile Queensland fruit flies were used in Sydney to assess their flight and distribution characteristics. Flies were detected within 400 m of the release site but did not reach the 5 km trapping array. The distribution was more pronounced towards the north-east and it may have been linked with strong wind prevailing in that direction. CLIMEX was used to indicate that the distribution was not limited by adverse weather. The distribution tended to agree with the formula predicted by Meats (1998). Flies marked with orange dye resulted in the highest recapture rate compared with pink, green and blue dyes. The possible reduction in quarantine radius, following a declared outbreak, is discussed.

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