A practical rearing method for leafrollers (Lepidoptera: Tortricidae)

Clare, Graeme K.; Ochieng‘-Odero, J. P. R.; Dalzell, Shelley J.; Singh, Pritam

doi:10.1080/03014223.1987.10423033

Cited by 34 publications

(14 citation statements)

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“…These had originally been collected from Canterbury, New Zealand and reared in a laboratory since 1982 (Clare et al 1987). They were reared to pupation on General Purpose Diet (Singh 1983), as described by Morris (1990a).…”

Section: Methodsmentioning

confidence: 99%

Effects of photoperiod and temperature on head-capsule size inPlanotortrix octo(Lepidoptera: Tortricidae)

Morris

1991

New Zealand Journal of Zoology

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The head-capsule widths of Planotortrix octo were measured atphotophases of 0, 2, 6,12,14, 16, 18, and 24 h under a LD 24 h cycle. The headcapsule widths of the 2nd, 4th, and 5th instar showed a photoperiodic response, being smaller under photophru;es of 12-16 h.The critical 5th instar head-capsule size above which pupation occurred, appeared smaller at these photophases. However, the critical size could not be determined accurately-or this difference verified statistically-as there wru; some overlap in capsule size between 5 and 6 instar groups.

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Section: Methodsmentioning

confidence: 99%

Effects of photoperiod and temperature on head-capsule size inPlanotortrix octo(Lepidoptera: Tortricidae)

Morris

1991

New Zealand Journal of Zoology

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“…These results contrast with those of Leonard (1970) who showed in P. dispar, that low temperatures during the first instar period induced an extra instar. In rearing systems where eggs are stored at low temperatures, as described by Clare & Singh (1987), it is important to be aware that such eggs could produce a greater number of 6 instar insects. This could be an advantage, as adults reared from these eggs would have a greater fertility, as noted above.…”

Section: Resultsmentioning

confidence: 99%

“…Life cycle,laboratory rearing procedures, and colony maintenance have been described by Clare et al (1987), Clare & Singh (1988), and Clare & Singh (unpubl. data).…”

Section: Methodsmentioning

confidence: 99%

Variation in the number of larval instars of the brownheaded leafroller,Ctenopseustis obliquana(Lepidoptera: Tortricidae) at constant laboratory temperatures

Clare¹,

Singh²

1990

New Zealand Journal of Zoology

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Larvae of a laboratory population of the brownheaded leaf roller (BHLR), CteMpseustis obliquana (Walker) (Lepidoptera: Tortricidae) developed through 5 or6larval instars for both sexes when reared on an artificial diet at 20°C, 50-60% RH, and 18 h photoperiod. Comparison of the life cycle of the two developmental groups showed that the 6 instar group had a greater head-capsule width in the fmal instar, a longer larval developmental period, heavier pupae and female adults, and a higher egg fertility. The lower the total number of instars, the greater the increase in the head capsule widths between instars. Proportions of larvae in the two instar groups were influenced by the rearing and storage temperatures in the egg and first instar stages. Compared to the incidence of 6 instars in larvae reared at 20°C, eggs developed at lOoC produced 19% more 6 instars, and first instar larvae held at 25°C produced 32% more 6 instars.

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“…Larvae of all three species were mass-reared in boxes containing artificial diet (Clare et al 1987). A preliminary trial highlighted the need for larvae, particularly 1 st and 3rd instars, to burrow into the kiwifruit in order to feed and survive.…”

Section: Insects and Fruitmentioning

confidence: 99%

Mortality responses of three leafroller (Lepidoptera: Tortricidae) species on kiwifruit to a high‐temperature controlled atmosphere treatment

Hoy

Whiting

1998

New Zealand Journal of Crop and Horticultural Science

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Mortality responses of 3-day-old eggs and 1st, 3rd, and 5th instars of three leafroller (Lepidoptera: Tortricidae) pests, infesting kiwifruit (Actinidia deliciosa), after exposure to a hightemperature controlled atmosphere (2% O 2 with 5% CO 2 at 40°C) were determined. All four life stages of Cnephasia jactatana (Walker) had similar mortality responses to controlled atmosphere (CA) treatment at the 99% mortality level. Fifth instars of Ctenopseustis obliquana (Walker) were more tolerant than the other three life stages tested. Epiphyas postvittana (Walker) showed a trend of increasing exposure time to achieve 99% mortality as development progressed. E. postvittana was more tolerant of CA treatment than C. obliquana and C. jactatana. An exposure time of 6 h resulted in control (> 99% mortality) of C. jactatana and C. obliquana however, did not control all life stages of E. postvittana. There is potential to combine a short high-temperature CA treatment with a longer period of low-temperature CA storage to control all three species.

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A practical rearing method for leafrollers (Lepidoptera: Tortricidae)

Cited by 34 publications

References 1 publication

Effects of photoperiod and temperature on head-capsule size inPlanotortrix octo(Lepidoptera: Tortricidae)

Effects of photoperiod and temperature on head-capsule size inPlanotortrix octo(Lepidoptera: Tortricidae)

Variation in the number of larval instars of the brownheaded leafroller,Ctenopseustis obliquana(Lepidoptera: Tortricidae) at constant laboratory temperatures

Mortality responses of three leafroller (Lepidoptera: Tortricidae) species on kiwifruit to a high‐temperature controlled atmosphere treatment

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