Hoplocampa testudinea (Klug), European apple sawfly (Hymenoptera: Tenthredinidae).

2013 ◽  
pp. 198-202
Author(s):  
C. Vincent ◽  
D. Babendreier ◽  
U. Kuhlmann ◽  
J. Lasnier
Keyword(s):  
Hoplocampa Testudinea

scholarly journals A New Look at Cultivar Preference in Hoplocampa testudinea (Hymenoptera: Tenthredinidae) on Apple in the Annapolis Valley of Nova Scotia, Canada

Insects ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 769
Author(s):  
Suzanne Blatt ◽  
Kim Hiltz
Keyword(s):  
Nova Scotia ◽  
Physicochemical Properties ◽  
Larval Survival ◽  
Larval Performance ◽  
Differential Survival ◽  
Eastern Canada ◽  
Weak Evidence ◽  
Important Pest ◽  
Annapolis Valley ◽  
Hoplocampa Testudinea

(1) Background: The European apple sawfly, Hoplocampa testudinea Klug (Hymenoptera: Tenthredinidae), can be an economically important pest in eastern Canada and shows preference for apple cultivars in Nova Scotia, Canada. We hypothesized that this preference could be due to oviposition by female H. testudinea (preference-performance hypothesis) during the bloom period or differential larval survival during development due to fruitlet physicochemical properties. (2) Methods: Fifteen commercial and experimental apple (Malusdomestica Borkh.; Rosaceae) cultivars located at the Kentville Research and Development Centre (Kentville, Nova Scotia) were chosen and examined for H. testudinea oviposition, larval performance during fruitlet development, fruitlet physicochemical properties and damage assessment at harvest from 2016–2019, inclusive. (3) Results: H. testudinea showed significant cultivar preference during oviposition, during development and at harvest, but the ranking of these cultivars was not the same throughout the season. Total impact by H. testudinea was consistent for most cultivars over multiple years of the study. (4) Conclusion: Correlation of oviposition with damage provided weak evidence for the preference-performance hypothesis. We propose that this relationship is weak due to differential survival of larvae during development.

scholarly journals Control of Hoplocampa testudinea using the extract from Quassia amara in organic apple growing

2010 ◽  
Vol 37 (No. 4) ◽  
pp. 139-144 ◽  
Author(s):  
V. Psota ◽  
J. Ouředníčková ◽  
V. Falta
Keyword(s):  
Czech Republic ◽  
Laboratory Experiment ◽  
Wood Chips ◽  
The Czech Republic ◽  
Small Plot ◽  
Quassia Amara ◽  
Hoplocampa Testudinea ◽  
Spray Treatment

In 2008 and 2009 the effects of quassin and neoquassin (oxygenated triterpenes) on apple sawfly (Hoplocampa testudinea Klug, 1814) were studied. In the Czech Republic, monitoring was carried out in small-plot trials and in one laboratory experiment. The extract containing quassin and neoquassin was made by boiling wood chips of a tropical shrub Quassia amara L. (Sapindales: Simaroubaceae). The experimental dosages were 3, 4.5, 6, and 9.25 kg of wood chips/ha. Spray treatment with the quassia extract was carried out just before most larvae hatched out. It was statistically proven that the extract from the wood of Q. amara reduced the apple sawfly infestation of fruitlets. Extract in the dosage corresponding to 3–4.5 kg of quassia wood chips for 1/ha appeared as optimal. The efficacy of these dosages was approximately 40–50%, and the efficacy above 80% was record.

scholarly journals Monitoring of Sawfly Populations (Hymenoptera, Symphyta: Hoplocampa Spp.) In Plum And Apple Orchards Using Visual Traps

2013 ◽  
Vol 67 (2) ◽  
pp. 130-135 ◽  
Author(s):  
Rimantas Tamosiunas ◽  
Laisvune Duchovskiene ◽  
Alma Valiuskaite
Keyword(s):  
Population Density ◽  
Research Centre ◽  
Flight Period ◽  
Economic Threshold ◽  
Degree Days ◽  
Apple Cultivars ◽  
Trap Catches ◽  
Organically Managed ◽  
Spring Emergence ◽  
Hoplocampa Testudinea

The investigation of Hoplocampa minuta (Christ, 1791) (black plum sawfly), Hoplocampa flava (Linné, 1760) (yellow plum sawfly) and Hoplocampa testudinea (Klug, 1816) (apple sawfly) populations using white sticky traps Rebell®bianco was carried out in conventionally and organically managed apple and conventionally managed plum orchards of the Institute of Horticulture of Lithuanian Research Centre for Agriculture and Forestry in 2010 and 2011. Temperature sums for predicting sawfly spring emergence were determined: 120 ± 5 degree-days for apple sawfly, 85 ± 26 degree-days for black plum sawfly and 95 ± 28 degree-days for yellow plum sawfly. However, more years of the study are needed to confirm these temperature sums. The average densities of sawflies during the flight period were: H. minuta - 14.8 ± 7.3 sawfly trap-1 in 2010 and 54.2 ± 35.9 sawfly trap-1 in 2011; H. flava - 13.3 ± 5.2 sawfly trap-1 in 2010,and 16.6 ± 6.9 sawfly trap-1 in 2011; and H. testudinea in organic orchard - 38.3 ± 26.2 sawfly trap-1 in 2010 and 5.0 ± 2.8 sawfly trap-1 in 2011, in conventional orchard - 14.8 ± 8.1 sawfly trap-1 in 2010 and 9.3 ± 4.3 sawfly trap-1 in 2011. Conditions for development of both plum sawfly species were better in 2011, when abundance nearly reached the economic threshold. Population density, cumulative trap catches during the flight period, and damage caused by apple sawfly varied significantly between the study years and apple cultivars. In 2010, apple sawfly was more abundant and caused more serious damage than in 2011. The economic threshold of 30-40 individuals per trap was reached in 2010 due to the better conditions of development. The various apple cultivars suffered different damage levels: cv. ‘Aldas’, ‘Vitos’ and ‘Rubinola’ suffered the highest damage in the organic orchard, but no significant differences were observed. In the conventional garden, cv. ‘Auksis’ had the most damaged fruits.

Biocontrol of the apple sawfly,Hoplocampa testudinea, with entomogenous nematodes

Entomophaga ◽  
1992 ◽  
Vol 37 (4) ◽  
pp. 575-582 ◽  
Author(s):  
C. Vincent ◽  
G. Bélair
Keyword(s):  
Hoplocampa Testudinea

scholarly journals Bioecology, Harm And Efficiency Of Certain Preparations Against The Apple Fruit Sawer (Hoplocampa Testudinea Klug.)

2021 ◽  
Vol 03 (05) ◽  
pp. 36-38
Author(s):  
Anarbaev A.R. ◽  
◽  
Akhmedjanova K.A. ◽  
Keyword(s):  
Sex Pheromone ◽  
Apple Fruit ◽  
Biological Efficiency ◽  
The Republic ◽  
Hoplocampa Testudinea

This article provides data on the harmfulness, distribution and lifestyle of the apple sawdust widely noted in recent years in the intensive orchards of the republic. In order to determine the effectiveness of insecticides against olm arrakashi, observations were first carried out based on the sex pheromone. On this basis, in three variants, the drugs Dalate Plus 10% ae, Entovant 15% ae, Protect 5% em.k were tested, a higher efficiency was observed in the variant where the drug Dalate Plus 10% ae was used, - 0,2 l / ha, where the biological efficiency was 86.7% in comparison with the control.

scholarly journals Life history of Aptesis nigrocincta (Hymenoptera: Ichneumonidae) a cocoon parasitoid of the apple sawfly, Hoplocampa testudinea (Hymenoptera: Tenthredinidae)

2000 ◽  
Vol 90 (4) ◽  
pp. 291-297 ◽  
Author(s):  
D. Babendreier
Keyword(s):  
Small Difference ◽  
Field Studies ◽  
Apple Orchard ◽  
Mortality Factor ◽  
Lifetime Fecundity ◽  
Parasitism Rates ◽  
History Of ◽  
Organically Managed ◽  
Hoplocampa Testudinea ◽  
Host Development

Aptesis nigrocincta Gravenhorst is a bivoltine ectoparasitoid of apple sawfly cocoons, hosts that must be found and parasitized by females at a depth of 10–25 cm in the soil. Females are significantly smaller than males and nearly wingless. After encountering a host, females needed 29.3 min at 20°C and 19.9 min at 25°C to deposit an egg on the host. Development from egg to adult took 39.6 days for females and 38.0 days for males at 20°C. This small difference was significant. At 20°C, the longevity of females that had no opportunity to oviposit was on average 72.5 days, significantly higher than male longevity (50.6 days). The longevity of females given access to hosts throughout their lifetime averaged 58.6 days. Females were able to mate immediately after emergence and copulation lasted on average 21.7 s. After a pre-oviposition period averaging 5.8 days, females laid 20.2 eggs during their lifetime, thus less than one egg per day. Neither the fecundity nor longevity of individual females was correlated with body size. If females were deprived of food, longevity as well as lifetime fecundity were drastically reduced. Field studies were carried out in one organically managed apple orchard in Switzerland. Aptesis nigrocincta showed parasitism rates ranging from 12.1 to 39.7 % within single parasitoid generations, thereby constituting the most important mortality factor of apple sawfly cocoons.

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