Deconstructing intercontinental invasion pathway hypotheses of the Mediterranean fruit fly (<i>Ceratitis capitata</i>) using a Bayesian inference approach: are port interceptions and quarantine protocols successfully preventing new invasions?

Karsten, Minette; Vuuren, Bettine Jansen van; Addison, Pia; Terblanche, John S.

doi:10.1111/ddi.12333

Cited by 42 publications

(40 citation statements)

References 65 publications

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“…Eschen et al 2015b), or indirect genetic methods (e.g. Karsten et al 2015), some studies have evaluated the efficacy of border control systems, but are still not able to directly estimate the efficacy of the system since actual propagule pressure is unknown.…”

Section: Reviewing Current Proceduresmentioning

confidence: 99%

Methods and approaches for the management of arthropod border incursions

et al. 2016

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Biological invasions are increasing and are strongly associated with negative agricultural, economic and ecological impacts. It is increasingly recognized that the primary focus in minimizing biological invasions should be to prevent initial entry of alien species. However, exclusion of terrestrial arthropods such as insects and mites is difficult, in part because of their relatively small size, cryptic habits, broad physiological tolerances and close association with various internationally traded goods. Here we discuss methods, approaches, management and intervention systems used by border biosecurity agencies to prevent entry of inadvertently transported arthropods. We examine the at-border systems that exist for the detection and identification of and response to alien arthropods, and discuss the constraints and challenges present in these systems. We critically review current border biosecurity systems and discuss their relative efficacy. We then discuss additional measures and key areas that could be addressed that may further improve these systems. These include: (1) the application of appropriate sampling strategies; (2) employment of suitable inspection methods adequate to detect small and hidden arthropods; and (3) thorough recording of methods, organisms detected and both negative and positive results of inspections. We emphasize that more pathways of introductions for invasive arthropods. Of critical importance is the compilation of complete and accurate invasive species lists and high-risk species watch-lists. The adoption of these recommendations will contribute to improved biosecurity systems for the exclusion of alien, invasive and pest arthropods.

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Section: Reviewing Current Proceduresmentioning

confidence: 99%

Methods and approaches for the management of arthropod border incursions

et al. 2016

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“…Societal concern on the impacts of anthropogenic climate change on biodiversity increases the need to understand how organisms respond to thermal variability, including their potential for geographic range expansion and invasion (Parmesan et al, 1999;Andrew, 2013;Karsten et al, 2015). Temperature is one key factor that is highly labile under changing climates (IPCC, 2014), and in all likelihood, will result in population shifts in geographic distribution and seasonal phenology of insects over time (Parmesan et al, 1999;Mwalusepo et al, 2015;Sinclair et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Comparative assessment of the thermal tolerance of spotted stemborer, Chilo partellus (Lepidoptera: Crambidae) and its larval parasitoid, Cotesia sesamiae (Hymenoptera: Braconidae)

2017

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Under stressful thermal environments, insects adjust their behavior and physiology to maintain key life-history activities and improve survival. For interacting species, mutual or antagonistic, thermal stress may affect the participants in differing ways, which may then affect the outcome of the ecological relationship. In agroecosystems, this may be the fate of relationships between insect pests and their antagonistic parasitoids under acute and chronic thermal variability. Against this background, we investigated the thermal tolerance of different developmental stages of Chilo partellus Swinhoe (Lepidoptera: Crambidae) and its larval parasitoid, Cotesia sesamiae Cameron (Hymenoptera: Braconidae) using both dynamic and static protocols. When exposed for 2 h to a static temperature, lower lethal temperatures ranged from -9 to 6 °C, -14 to -2 °C, and -1 to 4 °C while upper lethal temperatures ranged from 37 to 48 °C, 41 to 49 °C, and 36 to 39 °C for C. partellus eggs, larvae, and C. sesamiae adults, respectively. Faster heating rates improved critical thermal maxima (CT ) in C. partellus larvae and adult C. partellus and C. sesamiae. Lower cooling rates improved critical thermal minima (CT ) in C. partellus and C. sesamiae adults while compromising CT in C. partellus larvae. The mean supercooling points (SCPs) for C. partellus larvae, pupae, and adults were -11.82 ± 1.78, -10.43 ± 1.73 and -15.75 ± 2.47, respectively. Heat knock-down time (HKDT) and chill-coma recovery time (CCRT) varied significantly between C. partellus larvae and adults. Larvae had higher HKDT than adults, while the latter recovered significantly faster following chill-coma. Current results suggest developmental stage differences in C. partellus thermal tolerance (with respect to lethal temperatures and critical thermal limits) and a compromised temperature tolerance of parasitoid C. sesamiae relative to its host, suggesting potential asynchrony between host-parasitoid population phenology and consequently biocontrol efficacy under global change. These results have broad implications to biological pest management insect-natural enemy interactions under rapidly changing thermal environments.

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“…The macrogeographic population structure and invasion pathway of C. capitata was reconstructed to determine whether interception measures and quarantine protocols have been successful in South Africa/Africa, or whether these invasion pathways are perhaps changing over time (Karsten et al, 2015). Karsten et al (2015) also proposed a back introduction into South Africa at Burgers Hall from Europe. Furthermore, the most likely invasion pathway supported previous findings and historical records and showed a colonization of Europe from Africa, a secondary colonization of Australia from Europe, and an introduction from Greece to the Americas.…”

Section: Applications Of Population Genetics In Invasions and Pest Mamentioning

confidence: 99%

A synthesis for managing invasions and pest risks simultaneously for tephritid fruit flies in South Africa

Karsten

Barton

Addison

et al. 2018

Entomologia Exp Applicata

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Developing a general management framework for monitoring and reporting biological invasions in agricultural contexts is crucial to assist in the planning and execution of intervention and control strategies. Here we make use of a diverse range of data sets for economically significant South African agricultural fruit fly pests to offer several potential intervention strategies and present a general management framework that unifies different but related fields of research (invasion science and pest management). We review the status of Tephritidae (Diptera) in South Africa with a strong focus on the highly invasive Bactrocera dorsalis (Hendel) and touch on the use of population genetics in pest or invasion management. Integrated modelling of landscape friction from population genetics is undertaken to test for any intrinsic resistance to pest movement across the landscape (e.g., natural or agricultural barriers). Based on the novel analyses presented here, clearly defined landscape management units can be allocated. Across South Africa, control and intervention strategies for managing both invasions of new Tephritidae and existing pest species can be unified into a common framework. Finally, we illustrate the concepts outlined above in a conceptual management decision tree for integrating pest management and invasion management simultaneously. Promoting awareness among growers and the public about fruit fly invasions and impacts is a priority to prevent future incursions of fruit flies, whereas managing Tephritidae as distinct landscape units should facilitate prevention of movement of emerging and existing pests.

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Deconstructing intercontinental invasion pathway hypotheses of the Mediterranean fruit fly (Ceratitis capitata) using a Bayesian inference approach: are port interceptions and quarantine protocols successfully preventing new invasions?

Cited by 42 publications

References 65 publications

Methods and approaches for the management of arthropod border incursions

Methods and approaches for the management of arthropod border incursions

Comparative assessment of the thermal tolerance of spotted stemborer, Chilo partellus (Lepidoptera: Crambidae) and its larval parasitoid, Cotesia sesamiae (Hymenoptera: Braconidae)

A synthesis for managing invasions and pest risks simultaneously for tephritid fruit flies in South Africa

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