Seedcorn Maggot (Diptera: Anthomyiidae) Reproductive Biology and Techniques for Examining Ovarian Dynamics

Higley, Leon G.; Pedigo, Larry P.

doi:10.1093/jee/77.5.1149

Cited by 4 publications

(3 citation statements)

References 11 publications

(16 reference statements)

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“…there is little empirical evidence from field or laboratory investigations to support the hypothesis that mature oocytes are accurate indicators of having reached the physiological stage required for sexual receptivity. Higley & Pedigo (1984) and Martinson t7/ ( I / . ( 1989) examined ovarian development in the seedcorn fly.…”

Section: Introductionmentioning

confidence: 99%

The relationship of age and ovarian development to mating of Delia antiqua (Diptera: Anthomyiidae)

McDonald

Borden

1995

Physiological Entomology

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Abstract. The relationship between age and sexual receptivity for male and female onion flies, Delia antiqua (Meigen) (Diptera: Anthomyiidae), and factors affecting ovarian development were examined under various conditions. Confinement in small arenas had a significant negative effect on the rate of oogenesis over the first 10 days of adult life and, in some cases, on the percentage of females inseminated. The rate of oogenesis was not affected by male population density, but high density of females in large arenas appeared to have a priming effect. Few males in single‐pair mating bioassays conducted over 24 h were sexually mature at 3–4 days post‐eclosion, but > 50% mated when aged 6–7 days. Although females first mated at 3–4 days post‐eclosion when confined for 24 h with sexually mature males, most females mated at 6–7 days of age when oocytes in the terminal ovariole position comprised 50% of total egg volume (stage 7 or greater on a 10‐stage scale). No females aged 3 days were mated in no‐choice and two‐choice bioassays with sexually mature males over 24 h. Previtellogenic females (stage 3) were not inseminated, and ovarian development was only correlated weakly (r= 0.48) with mating. Frequency of mating in mixed‐sex groups of twenty flies was comparable with that in single pairs. However, more females were inseminated at 3–4 days, probably as a result of multiple matings by a few precocious males. These results do not support the hypothesis that females mate only when ovarioles are mature.

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Section: Introductionmentioning

confidence: 99%

The relationship of age and ovarian development to mating of Delia antiqua (Diptera: Anthomyiidae)

McDonald

Borden

1995

Physiological Entomology

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“…At emergence, W. fumiferanae is similar to other cyclorraphous Diptera, the undeveloped ovaries and abdominal cavity being filled with fat droplets, indicating the nulliparous state (Anderson 1964;Higley and Pedigo 1984). However, it is not possible to distinguish discrete parous states to monitor egg deposition in W. fumiferanae.…”

Section: Discussionmentioning

confidence: 99%

Seasonal biology of Winthemia fumiferanae Toth. (Diptera: Tachinidae), a larval–pupal parasitoid of the spruce budworm (Lepidoptera: Tortricidae)

Hébert¹,

Cloutier²,

Régnière³

et al. 1989

Can. J. Zool.

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1989. Seasonal biology of Winthemia fumiferanae Toth. (Diptera: Tachinidae), a larval-pupal parasitoid of the spruce budwom (Lepidoptera: Tortricidae). Can. J. Zool. 67: 2384-2391. The phenology of Winthemia fumiferanue Toth. (Diptera: Tachinidae), a larval -pupal parasitoid of the spruce budwom, was studied in Quebec to evaluate its synchrony with the host. Adult emergence showed protandry and occurred when budworm larvae were in the second to the fifth instar. In Malaise trap catches, males were dominant during the emergence period but as this ended, females became dominant and remained so for the rest of the season. Females emerged with undeveloped ovaries and abundant fat reserves. The maturation of eggs was completed within 2 weeks after emergence and coincided with the appearance of sixth-instar budwom larvae. Potential fecundity was correlated with female body size. Females deposited, on average, 32% of potential eggs, many oocytes remaining undeveloped in the ovarioles. Oviposition on spruce budwom larvae was synchronized with peak abundance of the sixth instar. Winthemia fumiferanae prepupae, among other dipteran parasitoids of the spruce budwom, were the last to drop to the ground. There was evidence of a partial second generation but its incidence was below 1 % under field conditions. More than 95 % of the W. fumiferanae puparia were found between 0 and 40 mm below the soil surface. The importance of W. fumiferanae in spruce budwom outbreaks and factors that may reduce its efficacy as a mortality agent are discussed.HBBERT, C., CLOUTIER, C., RBGNIBRE, J., et PERRY, D. F. 1989. Seasonal biology of Winthemia fumiferanue Toth.(Diptera: Tachinidae) , a larval -pupal parasitoid of the spruce budwom (Lepidoptera: Tortricidae) . Can. J . Zool. 67 : 2384-2391. La phknologie de Winthemia fumiferanae Toth. (Diptera: Tachinidae), un parasitoide des larves et des chrysalides de la tordeuse des bourgeons de l'kpinette, a kt6 CtudiCe au QuCbec dans le but d'Cvaluer son degd de synchronisme avec l'h6te. L'Cmergence des adultes Ctait caractCrisCe par la protandrie et a debut6 durant le deuxikme stade larvaire de la tordeuse pour se teminer au dCbut du cinquikme. Dans des captures effectuCes h l'aide de pikges Malaise, les miles Ctaient dominants pendant la pCriode d'imergence des adultes, puis les femelles ont dominC pour le reste de la saison. Lorsqu'elles Cmergent, les femelles ont les ovaires peu dCveloppCs et d'abondantes rkserves de graisse. La maturation des oeufs a Ct C complCtCe en 2 semaines et a coYncidC avec l'apparition des larves de sixikme stade. La fCconditC potentielle Ctait relike h la taille des femelles. En moyenne, les femelles ont pondu 32% de leurs oeufs potentiels; beaucoup d'oocytes sont restCs immatures dans les ovarioles. La ponte sur les larves de la tordeuse etait synchroniske avec l'abondance maximale des larves de sixikme stade. Parrni les autres diptkres parasitoides de la tordeuse, les pr6-pupes de W. fumiferanae ont Ct C les dernikres h tomber au sol. Nous avons observC une deuxikme gC...

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“…The individual rates for these reactions depend on three criteria: availability of substrates, availability of enzymes, and temperature. Development is retarded when substrates-water, nutrients, and photosynthates for plants, water and food for animals-are not readily available (Lees 1955, Higley & Pedigo 1984b. Therefore, all required substrates (i.e., nutrients) must be present in adequate quantities for optimal growth.…”

Section: Assumptions In Degree-day Modelingmentioning

confidence: 99%

Degday: A Program for Calculating Degree-days, and Assumptions Behind the Degree-day Approach

Higley

Pedigo

Ostlie

1986

Environmental Entomology

263

192

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A BASIC computer program (DEGDAY) for calculating degree-days on microcomputers is presented. The program calculates heating degree-days with the rectangle, triangle, and sine wave methods and calculates cooling degree days with the sine wave method. Assumptionsand approximations associated with degree-day calculations are noted. In particular, eight factors affecting degree-days are discussed: 1) substrate availability, 2) enzyme availability, 3) approximations in laboratory estimates of development, 4) approximations in calculating the developmental minimum, 5) approximations in calculating a developmental maximum, 6) approximations in using single values for thresholds, 7) thermoregulation, and 8) limitations of temperature data. The various errors arising from these factors are discussed in relationship to error attributable to differences between actual and estimated degree-days.

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Seedcorn Maggot (Diptera: Anthomyiidae) Reproductive Biology and Techniques for Examining Ovarian Dynamics

Cited by 4 publications

References 11 publications

The relationship of age and ovarian development to mating of Delia antiqua (Diptera: Anthomyiidae)

The relationship of age and ovarian development to mating of Delia antiqua (Diptera: Anthomyiidae)

Seasonal biology of Winthemia fumiferanae Toth. (Diptera: Tachinidae), a larval–pupal parasitoid of the spruce budworm (Lepidoptera: Tortricidae)

Degday: A Program for Calculating Degree-days, and Assumptions Behind the Degree-day Approach

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