Population Dynamics of the Alfalfa Blotch Leafminer, Agromyza frontella (Diptera: Agromyzidae), in Eastern Ontario: Impact of the Exotic Parasite Dacnusa dryas (Hymenoptera: Braconidae)

1988 ◽  
Vol 17 (2) ◽  
pp. 337-343 ◽  
Author(s):  
D. G. Harcourt ◽  
J. C. Guppy ◽  
F. Meloche
Keyword(s):  
Population Dynamics ◽  
Eastern Ontario ◽  
Alfalfa Blotch Leafminer ◽  
Agromyza Frontella

BIONOMICS OF THE ALFALFA BLOTCH LEAFMINER, AGROMYZA FRONTELLA (DIPTERA: AGROMYZIDAE), IN EASTERN ONTARIO

1981 ◽  
Vol 113 (7) ◽  
pp. 593-600 ◽  
Author(s):  
J. C. Guppy
Keyword(s):  
Lower Epidermis ◽  
Thermal Requirements ◽  
Linear Relationships ◽  
Developmental Rates ◽  
Eastern Ontario ◽  
Highly Correlated ◽  
Alfalfa Blotch Leafminer ◽  
Agromyza Frontella

AbstractThe alfalfa blotch leafminer, Agromyza frontella (Rondani), typically develops through three complete generations a year. It overwinters as a partially developed pupa that completes its development in mid-May. Three distinct adult flight periods occur: mid-May to mid-June, late June to late July, and early to late August. Eggs are deposited singly in alfalfa leaflets beneath the lower epidermis and on hatching, the larvae move toward the upper leaflet surface where they feed on the mesophyll and develop through three instars to form blotch mines, each representing about 27% of the leaflet area. The mature larvae emerge from the mines and drop to the soil to form light brown puparia, mainly in the top 2.5 cm of soil.Duration of each stage decreased with rise in temperature up to 25° but none of the stages survived 30°C. Developmental rates plotted against temperature gave highly correlated linear relationships for all stages. The theoretical threshold for the egg, larva, and pupa was 7°, 3°, and 4°C, respectively; thermal requirements for these stages were 55, 123, and 333°D, respectively.Survival of the larvae was higher in leaflets with solitary mines than in those with multiple mines; only 25% of the leaflets with two mines gave rise to two mature larvae. Three larvae seldom survived in a single leaflet.

Identification of female sex pheromone in alfalfa blotch leafminer,Agromyza frontella (Rondani)(Diptera: Agromyzidae)

1988 ◽  
Vol 14 (3) ◽  
pp. 947-956 ◽  
Author(s):  
Yves Carri�re ◽  
Jocelyn G. Millar ◽  
Jeremy N. McNeil ◽  
David Miller ◽  
E. W. Underbill
Keyword(s):  
Sex Pheromone ◽  
Female Sex Pheromone ◽  
Female Sex ◽  
Alfalfa Blotch Leafminer ◽  
Agromyza Frontella

Size influences male mating success in the alfalfa blotch leafminer (Diptera: Agromyzidae)

2001 ◽  
Vol 133 (5) ◽  
pp. 717-719 ◽  
Author(s):  
Arild Andersen ◽  
Jeremy N. McNeil
Keyword(s):  
Reproductive Success ◽  
Male Mating ◽  
Female Size ◽  
Larval Competition ◽  
Female Reproduction ◽  
Male Size ◽  
Female Life History ◽  
Males And Females ◽  
Alfalfa Blotch Leafminer ◽  
Agromyza Frontella

Male size is an important parameter in mate choice for many species and has been associated with such female life-history parameters as increased fecundity or fertility and larger progeny (Phelan and Baker 1986; Savalli and Fox 1998, 1999; Brown 1999). In the alfalfa blotch leafminer, Agromyza frontella (Rondani), intraspecific larval competition may significantly influence the size of both males and females (Quiring and McNeil 1984a). The influence of female size on female reproductive success has been studied (Quiring and McNeil 1984b, 1984c), but to date, no attention has been given to the possible effects of male size. The objectives of this study were to determine if differences in male size, the result of intraspecific larval competition, affected male longevity and reproductive success, as well as various parameters of female reproduction.

Stereoselective syntheses of isomers of 3,7-dimethylnonadecane, a sex pheromone of the alfalfa blotch leafminer (Agromyza frontella (Rondani))

1991 ◽  
Vol 69 (7) ◽  
pp. 1100-1106 ◽  
Author(s):  
David Miller ◽  
François Bilodeau ◽  
Robert H. Burnell
Keyword(s):  
Optical Properties ◽  
Sex Pheromone ◽  
Key Words ◽  
Stereoselective Synthesis ◽  
Starting Material ◽  
The Other ◽  
Stereogenic Center ◽  
Stereoselective Syntheses ◽  
Alfalfa Blotch Leafminer ◽  
Agromyza Frontella

Two related stereoselective syntheses of 3,7-dimethylnonadecane, a sex pheromone of the alfalfa leafminer, are described to show that pulegone can serve as a useful starting material for the preparation of chiral aliphatic isoprenoid compounds. The schemes are designed to place the stereogenic center of pulegone at C.3 in one synthesis and at C.7 in the other so that the optical properties of the products can be compared with one another and with the values calculated using Brewster's rules. Key words: chiral hydrocarbons, stereoselective synthesis, pheromone, Agromyza frontella.

ADULT-LARVAL INTRASPECIFIC COMPETITION IN AGROMYZA FRONTELLA (DIPTERA: AGROMYZIDAE)

1984 ◽  
Vol 116 (10) ◽  
pp. 1385-1391 ◽  
Author(s):  
Daniel T. Quiring ◽  
Jeremy N. McNeil
Keyword(s):  
Population Dynamics ◽  
Indirect Effect ◽  
Food Source ◽  
Developmental Time ◽  
Laboratory Studies ◽  
Larval Competition ◽  
Adult Females ◽  
Adult Feeding ◽  
Low Levels ◽  
Agromyza Frontella

AbstractBoth adult females and larvae of Agromyza frontella (Rondani) exploit the same food source, alfalfa leaflets. In laboratory studies, larval development in leaflets with many adult nutrition holes resulted in a higher incidence of mortality than in leaflets with low levels of adult feeding. Furthermore, in heavily attacked leaflets, survivors had a slightly longer larval developmental time and lower pupal weights. In heavily attacked alfalfa fields where adult nutrition holes are numerous, the above-mentioned adult–larval interaction could play a density-dependent role in the population dynamics of A. frontella. However, in most situations adult feeding probably has an indirect effect, accentuating intraspecific larval competition by decreasing the quantity of the available limiting resource.

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