The influence of climate on the establishment and success of the biocontrol agent Gratiana spadicea, released on Solanum sisymbriifolium in South Africa

Byrne, Marcus J.; Currin, Sean; Hill, Martin

doi:10.1016/s1049-9644(02)00021-x

Cited by 56 publications

(46 citation statements)

References 17 publications

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“…High levels of relative humidity have been shown for other insects to positively affect the hatching of eggs and the survival of adults and immature life stages (Byrne et al 2002;Duyck et al 2006;Moriyama and Numata 2006;Simmons et al 2008). However, high humidity at the Zululand, Tzaneen and Sabie monitoring sites were associated with a decrease in T. peregrinus population size.…”

Section: Monitoring Trialmentioning

confidence: 99%

Population dynamics of Thaumastocoris peregrinus in Eucalyptus plantations of South Africa

et al. 2014

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Thaumastocoris peregrinus is a sap sucking insect that infests non-native Eucalyptus plantations in Africa, New Zealand, South America and parts of Southern Europe, in addition to street trees in parts of its native range of Australia. In South Africa, pronounced fluctuations in the population densities have been observed. To characterise spatiotemporal variability in T. peregrinus abundance and the factors that might influence it, we monitored adult population densities at six sites in the main eucalypt growing regions of South Africa.At each site twenty yellow sticky traps were monitored weekly for 30 months, together with climatic data. We also characterised the influence of temperature on growth and survival experimentally, and used this to model how temperature may influence population dynamics.T. peregrinus was present throughout the year at all sites, with annual site specific peaks in abundance. Peaks occurred during Autumn (February -April) for the Pretoria site, Summer (November -January) for the Zululand site and Spring (August -October) for the Tzaneen, Sabie and Piet Retief monitoring sites. Temperature (both experimental and field collected), humidity and rainfall were mostly weakly, or not at all, associated with population fluctuations. It is clear that a complex interaction of these and other factors (e.g. host quality) influence population fluctuations in an annual, site specific cycle. The results obtained not only provide insights into the biology of T. peregrinus, but will also be important for future planning of monitoring and control programs using semiochemicals, chemical insecticides or biological control agents.

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Section: Monitoring Trialmentioning

confidence: 99%

Population dynamics of Thaumastocoris peregrinus in Eucalyptus plantations of South Africa

et al. 2014

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“…Several factors determine the successful establishment and population growth of biological control agents following initial release into new areas (Sutherst 2000; Byrne et al 2002). For example, adaptations to temperature and response to photoperiod may be critical to establishment and subsequent performance of natural enemies, but these are not often studied before an agent is released (McClay and Balciunas 2005; Muller-Scharer and Schaffner 2008).…”

Section: Discussionmentioning

confidence: 99%

“…Knowledge of the temperature requirements of potential biological control agents, in particular cold tolerance data, may help to predict establishment and potential distribution following the releases into new areas (Byrne et al 2002;Diaz et al 2008;Manrique et al 2008). Based on this study, G. graminea may establish in Florida, Texas, Georgia and Alabama, where S. viarum is also present.…”

Section: Discussionmentioning

confidence: 99%

Temperature-dependent development, diapause and cold tolerance of Gratiana graminea, a potential biological control agent of Solanum viarum in Florida, USA

2012

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The objectives of this study were to examine temperature-dependent development, diapause and cold tolerance of Gratiana graminea Klug (Chrysomelidae), a candidate biological control agent of tropical soda apple, Solanum viarum Dunal (Solanaceae). Immature development was examined at six constant temperatures ranging from 15°C to 30°C. Diapause induction was determined by exposing adults to either long or short photoperiods at 20°C and cold tolerance was assessed by exposing adults to 0°C. G. graminea completed development at temperatures ranging from 20°C to 30°C. Linear regression estimated a lower temperature threshold of 11.7°C and 312 degree-days were required to complete development. Diapause was induced when adults were exposed to short photoperiods (10:14 L:D h) at 20°C. The lethal times for diapausing adults of G. graminea at 0°C (LT 50 = 19 days, LT 90 = 41 days) were two times higher compared to Gratiana boliviana Spaeth, a biological control agent already established in south and central Florida, USA. The presence of diapause and the greater cold tolerance suggest that G. graminea may establish and perform better than G. boliviana in northern Florida.

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“…Temperature is one of the critical factors that affect insect development and survival, and more importantly, the ability of a species to establish in new areas (Crawley 1987;Sutherst 2000;Byrne, Currin, and Hill 2002). Thus, studies on temperature requirements of potential biological control agents are critical for determining suitable areas for establishment in the introduced range (McFadyen 1991; Stiling and Cornelissen 2005;Pilkington and Hoddle 2006;Zhou et al 2010).…”

Section: Discussionmentioning

confidence: 99%

Description and biology ofPaectes longiformis(Lepidoptera: Euteliidae), a new species from Brazil and potential biological control agent of Brazilian peppertree in Florida

Manrique

Díaz

Pogue

et al. 2012

Biocontrol Science and Technology

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Brazilian peppertree, Schinus terebinthifolius Raddi (Anacardiaceae), native to South America, has invaded different habitats throughout south and central Florida. In recent surveys of natural enemies conducted in Salvador, Brazil (native range), a new species in the genus Paectes (Lepidoptera: Euteliidae) was found feeding on foliage of Brazilian peppertree. The objectives of this study were to describe the adult, larva and pupa and to examine the life history parameters of the new species, Paectes longiformis Pogue, a potential biocontrol agent of Brazilian peppertree. Survival and development of immature stages were examined at six constant temperatures (ranging from 16 to 348C). All stages of P. longiformis were exposed to 08C for 0.5, 1, 2, 4 and 8 d, and lethal times were calculated (Ltime 50 , Ltime 90 ). Paectes longiformis laid eggs singly on the plant foliage and completed five instars including a non-feeding pre-pupal stage that moved to the soil where it spun a cocoon. Complete development occurred at temperatures from 19 to 318C, the lower developmental threshold was estimated to be 11.58C and 454 degree-days were required to complete development from egg to adult. The lethal times at 08C (Ltime 50 01 d, Ltime 90 05 d) were used to construct isothermal lines to predict areas of establishment in the continental US. The predicted distribution includes the southeastern states including Florida, in addition to southern Texas and Arizona, and California. Overall, this study provides a species description, along with baseline information about the biology and temperature requirements of P. longiformis, a potential biological control agent of Brazilian peppertree.

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The influence of climate on the establishment and success of the biocontrol agent Gratiana spadicea, released on Solanum sisymbriifolium in South Africa

Cited by 56 publications

References 17 publications

Population dynamics of Thaumastocoris peregrinus in Eucalyptus plantations of South Africa

Population dynamics of Thaumastocoris peregrinus in Eucalyptus plantations of South Africa

Temperature-dependent development, diapause and cold tolerance of Gratiana graminea, a potential biological control agent of Solanum viarum in Florida, USA

Description and biology ofPaectes longiformis(Lepidoptera: Euteliidae), a new species from Brazil and potential biological control agent of Brazilian peppertree in Florida

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