Effect of cold storage of adult<i>Trichogramma brassicae, T. cacoeciae</i>and<i>T. evanescens</i>(Hym.: Trichogrammatidae)

Özder, Nihal

doi:10.1080/03235400600759347

Cited by 17 publications

(8 citation statements)

References 5 publications

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“…A reduction in the emergence rate due to the cold storage was also found with T. nerudai (Tezze and Botto, 2004) and T. cordubensis (Ventura Garcia et al, 2002). Similarly, a significant decline in parasitoid emergence rate was also reported by Ozder and Saglam (2004) for T. brassicae and T. evanescens after storage at 4°C for 3 weeks. The emergence rate of the Tunisian strain of T. bourarachae stored for 60 days at 4°C without prestorage treatment (78.3%) was higher than that reported for T. nerudai and T. cordubensis when they stored at 3-4°C for 50 and 60 days, respectively (Ventura Garcia et al, 2002;and Tezze and Botto, 2004).…”

Section: Resultssupporting

confidence: 72%

“…Therefore, the development of adapted techniques of production, release, and storage is crucial to guarantee the flexibility, the profitability, and the efficiency of their mass rearing and to ensure their availability in sufficient numbers at the time of their release in the field (Leopold, 1998;Tezze and Botto, 2004;Ayvaz et al, 2008;and Lü et al, 2019). In particular, the cold storage technique which, in most cases, allows to delay wasps' eclosion without compromising their performance was studied for several Trichogramma species (Bradley et al, 2004;Ozder and Saglam, 2004;and Kumar et al, 2005) as it is important to investigate its effects on their biological performances and their propensity to cold storage (Tezze and Botto, 2004). Two main cold storage techniques have been used in mass rearing of Trichogramma spp., with and without diapause induction depending on the desired storage period and their sensitivity to diapause induction (Greenberg et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

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Effect of cold storage on the performance of Trichogramma bourarachae (Pintureau and Babault) (Hymenoptera: Trichogrammatidae)

Abbes

Zouba²,

Harbi

et al. 2020

Egypt J Biol Pest Control

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In Tunisia, the use of the egg parasitoid trichogrammatid wasps to cope with several economic pests is gaining increasing attention. Trichogramma bourarachae (Pintureau & Babault) is among the Trichogramma wasps naturally present in Tunisia and regarded as a potential natural enemy to be used in biological control programs of many lepidopteran pests that cause economic losses. The propensity of T. bourarachae to cold storage with and without diapause induction was studied. The effect of this technique on its emergence rate and parasitic activity was investigated. The study showed that wasps of T. bourarachae treated at the induction temperature of 15°C for 5 days can be stored at 4 ± 1°C for more than 30 days without significant loss of their performances. By using this prestorage temperature, T. bourarachae could keep its emergence capacity (77.5%) up to 60 days of cold storage at 4 ± 1°C. However, its parasitic activity decreased significantly (37.16%) after 45 days of cold storage. These results are promising for its mass production, transport, and release in the framework of national campaigns to control several agricultural pests of economic importance.

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Section: Resultssupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

Effect of cold storage on the performance of Trichogramma bourarachae (Pintureau and Babault) (Hymenoptera: Trichogrammatidae)

Abbes

Zouba²,

Harbi

et al. 2020

Egypt J Biol Pest Control

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“…Our findings agreed with Bradley et al (2004) , the emergence rate of T. carverae was negatively affected by lower temperatures (10 °C) especially after 3 weeks of storage. Ozder and Saglam (2004) have noted a reduction in the emergence rate for T. brassicae and T. evanescens after 3 weeks of storage at 4 °C. A decrease in the emergence percentage due to the cold storage periods was also reportedly with T. nerudai ( Tezze and Botto, 2004 ), and T. cordubensis ( Ventura Garcia et al, 2002 ).…”

Section: Resultsmentioning

confidence: 92%

“…Abd El-Gawad et al (2010) indicated that the emergence percentage was higher at 4 °C than at 10 °C. Furthermore, the decline in the emergence percentage becomes significant after 21 days of cold storage at 4 °C for T. brassicae and T. evanescens ( Ozder and Saglam, 2004 ). The emergence rate of T. carverae decreased significantly after 3 weeks of cold storage (10 °C) ( Bradley et al, 2004 ).…”

Section: Introductionmentioning

confidence: 99%

The impact of cold storage durations on Trichogramma evanescens (Westwood) (Hymenoptera: Trichogrammatidae) during their pupal stage

Shawer

Sharshir

Taha

et al. 2021

Saudi Journal of Biological Sciences

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This experimental study was done at the Biological Control Laboratory, Sakha Agricultural Research Station, Sakha, Kafrelsheikh, Egypt. We aimed to estimate the impact of different cold (10 °C) storage durations [0 (non-cold-stored parasitized eggs), 3, 6, 9, 12, 15, 18, 21, 24, 27, and 30 days], on Trichogramma evanescens (Westwood) (Hymenoptera: Trichogrammatidae) during the pupal stage using the eggs of Sitotroga cerealella after exposing to T. evanescens . The emergence percentage of non-cold-stored eggs of S. cerealella was higher than all cold-stored durations. Also, the female’s percentages of T. evanescens in the cold storage durations were lower than the non-cold storage one, and they were influenced by extended cold storage durations. There were non-significant differences in the female’s longevity of T. evanescens obtained from 0, 3, and 6 days cold-stored parasitized eggs of S. cerealella at 10 °C, but it began to decrease from those produced after 9 days of cold-stored eggs. In addition, the emergence percentage in F1 progeny of T. evanescens was greater than 50% until 21 days of cold storage. It could be concluded that cold storage reduced the % emergence, % females, female’s longevity, and emergence percentage in F1 progeny of T. evanescens . For a successful biological control program, the decrease of T. evanescens performance after cold storage durations should be considered in mass production, and the release percentage should be increased by the equivalent of a lack of % emergence. Also, the economic importance of using cold storage periods in commercial mass rearing should be assessed in the biological control program.

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“…sp. ), T. cacoeciae and T. evanescens (Hymenoptera: Trichogrammatidae) (ÖZDER, 2008). However, the effects of storage at low temperatures on predators are not well known, especially in the tropics, and studies to determine the optimal temperature and storage period are required.…”

Section: Introductionmentioning

confidence: 99%

EGG STORAGE OF Podisus nigrispinus (HEMIPTERA: PENTATOMIDAE) PREDATORS AT LOW TEMPERATURES

et al. 2016

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-Podisus nigrispinus are bedbug predators that are used as biological control agents of defoliating larvae in eucalypt plantations. The mass rearing of natural enemies produces large numbers of insects, but the number of predators produced may not coincide with the timing of the outbreaks of pest populations in the field. The aim of this study was to evaluate the effects of different storage periods on the eggs of P. nigrispinus at low temperatures of 5, 13 and 15°C. The treatments consisted of periods of 5, 10, 15 and 20 days of storage of predator eggs at each temperature indicated. After the different periods of storage, the eggs were removed, and the egg viability, the survival and duration of nymphal instars and the sex ratio of emerged adults were evaluated. Egg storage at 5°C reduced the percentage of hatched eggs, while viability values close to 50% were observed for storage periods of up to 10 days at 13°C and up to 15 days at 15°C. For these treatments, the survival rates of nymphs were similar to those of the control. The different storage periods had no effect on the duration of the nymphal stage or the sex ratio of P. nigrispinus at any of the temperatures. Therefore, the storage temperature of 5°C caused the death of the majority of the embryos, while it is possible to store P. nigrispinus eggs up to 10 and 15 days at 13 and 15°C, respectively. Keywords: Biological control; Mass rearing; Cold storage. ARMAZENAMENTO DE OVOS DO PREDADOR Podisus nigrispinus (HEMIPTERA: PENTATOMIDAE) EM BAIXAS TEMPERATURASRESUMO -Podisus nigrispinus (Dallas) (Hemiptera: Pentatomidae) são percevejos predadores utilizados como agentes de controle biológico de lagartas desfolhadoras em florestas de eucalipto. Criações massais de inimigos naturais produzem grande número de insetos, mas o número de predadores produzidos pode não coincidir com a época de surtos populacionais de pragas no campo. O objetivo deste trabalho foi avaliar o efeito de diferentes períodos de armazenamento em ovos de P. nigrispinus em baixas temperaturas (5 °C, 13 °C e 15°C ). Os tratamentos consistiram dos períodos de armazenamento (cinco, 10, 15 e 20 dias) dos ovos do predador nas temperaturas indicadas. Após os períodos de armazenagem, os ovos foram retirados e avaliados os parâmetros: viabilidade dos ovos, sobrevivência e duração do estádio ninfal e razão sexual dos adultos emergidos. Os períodos de armazenamento de ovos a 5°C reduziram a porcentagem de ninfas eclodidas inviabilizando a maioria dos ovos. Enquanto valores de viabilidade próximos a 50% foram observados para os períodos de armazenamento de até 10 dias para 13 °C e 15 dias armazenados a 15 °C, com taxas de sobrevivência de ninfas, similares às do controle. Não houve efeito na duração do estágio ninfal e na razão sexual de P. nigrispinus nos tratamentos 878

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Effect of cold storage of adultTrichogramma brassicae, T. cacoeciaeandT. evanescens(Hym.: Trichogrammatidae)

Cited by 17 publications

References 5 publications

Effect of cold storage on the performance of Trichogramma bourarachae (Pintureau and Babault) (Hymenoptera: Trichogrammatidae)

Effect of cold storage on the performance of Trichogramma bourarachae (Pintureau and Babault) (Hymenoptera: Trichogrammatidae)

The impact of cold storage durations on Trichogramma evanescens (Westwood) (Hymenoptera: Trichogrammatidae) during their pupal stage

EGG STORAGE OF Podisus nigrispinus (HEMIPTERA: PENTATOMIDAE) PREDATORS AT LOW TEMPERATURES

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