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Relevant bibliographies by topics / Heather beetles

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Academic literature on the topic 'Heather beetles'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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Journal articles on the topic "Heather beetles"

1

Peterson, P. G., S. V. Fowler, and P. Barrett. "Is the poor establishment and performance of heather beetle in Tongariro National Park due to the impact of parasitoids predators or disease." New Zealand Plant Protection 57 (August 1, 2004): 89–93. http://dx.doi.org/10.30843/nzpp.2004.57.6977.

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Heather beetle (Lochmaea suturalis) introduced in 1996 into Tongariro National Park New Zealand to control heather (Calluna vulgaris) has established poorly and only damaged heather at one site This work investigated whether natural enemies could be reducing heather beetle establishment and impact No egg larval or adult parasitism was found Possible egg predation by a carabid beetle larvae and occasional attacks on larvae by the native pentatomid (Cermatulus nasalis) were observed in the field Neither the microsporidian pathogen discovered in some beetles imported from the United Kingdom nor any other pathogenic diseases were detected in fieldcollected beetles in New Zealand It is suggested that adverse weather was responsible for a collapse in heather beetle numbers at Te Piripiri during 2002 Further efforts to redistribute heather beetle and continued monitoring of beetle numbers impact natural enemies and climate at release sites are recommended

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Syrett, P., L. A. Smith, T. C. Bourner, S. V. Fowler, and A. Wilcox. "A European pest to control a New Zealand weed: investigating the safety of heather beetle, Lochmaea suturalis (Coleoptera: Chrysomelidae) for biological control of heather, Calluna vulgaris." Bulletin of Entomological Research 90, no. 2 (2000): 169–78. http://dx.doi.org/10.1017/s0007485300000286.

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Heather, Calluna vulgaris (L.) Hull, is a serious invasive weed in the central North Island of New Zealand, especially in Tongariro National Park, a World Heritage Area. Heather beetle, Lochmaea suturalis (Thomson), is a foliage-feeding pest of Calluna in Europe, that was selected as the most promising biological control agent for introduction into New Zealand, because it causes high levels of damage to Calluna in Europe. Host-range tests indicated that L. suturalisposes a negligible threat to native New Zealand plants. Cultivars of Callunagrown as ornamentals are suitable food plants, but are unlikely to be severely affected because L. suturalis requires a damp understorey of moss or litter for successful oviposition and pupation, which is rarely present in gardens. However, mosses and litter occurring under Calluna stands in Tongariro National Park are suitable substrates for eggs and pupae. Lochmaea suturalis released in New Zealand has been freed of parasitoids and a microsporidian disease that attack the beetles in Europe.

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PORT, C. M., and C. T. GUILE. "Outbreaks of flea beetles, Altica spp., on heather and other flowering plants." Plant Pathology 35, no. 4 (1986): 575–77. http://dx.doi.org/10.1111/j.1365-3059.1986.tb02056.x.

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4

Effah, Evans, D. Paul Barrett, Paul G. Peterson, et al. "Herbivory and Attenuated UV Radiation Affect Volatile Emissions of the Invasive Weed Calluna vulgaris." Molecules 25, no. 14 (2020): 3200. http://dx.doi.org/10.3390/molecules25143200.

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Calluna vulgaris (heather) is an aggressive invasive weed on the Central Plateau, North Is., New Zealand (NZ), where it encounters different environmental factors compared to its native range in Europe, such as high ultraviolet radiation (UV) and a lack of specialist herbivores. The specialist herbivore Lochmaea suturalis (heather beetle) was introduced from the United Kingdom (UK) in 1996 as a biocontrol agent to manage this invasive weed. Like other plant invaders, a novel environment may be challenging for heather as it adjusts to its new conditions. This process of “adjustment” involves morphological and physiological changes often linked to phenotypic plasticity. The biochemical responses of exotic plants to environmental variables in their invaded range is poorly understood. The production and release of volatile organic compounds (VOCs) is essential to plant communication and highly susceptible to environmental change. This study therefore aimed to explore the VOC emissions of heather in response to different levels of UV exposure, and to feeding damage by L. suturalis. Using tunnel houses clad with UV-selective filters, we measured VOCs produced by heather under NZ ambient, 20% attenuated, and 95% attenuated solar UV treatments. We also compared VOC emissions in the field at adjacent sites where L. suturalis was present or absent. Volatiles produced by the same target heather plants were measured at four different times in the spring and summer of 2018–2019, reflecting variations in beetle’s abundance, feeding stage and plant phenology. Heather plants under 95% attenuated UV produced significantly higher amounts of (E)-β-farnesene, decanal, benzaldehyde, and benzeneacetaldehyde compared to 25% attenuated and ambient UV radiation. We also found significant differences in volatiles produced by heather plants in beetle-present versus beetle-absent sites on most sampling occasions. We also recorded a lower number of generalist herbivores on heather at sites where L. suturalis was present. Interactions between invasive plants, a novel environment, and the native communities they invade, are discussed.

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Amore, Valentina, Malva I. M. Hernández, Luis M. Carrascal, and Jorge M. Lobo. "Exoskeleton may influence the internal body temperatures of Neotropical dung beetles (Col. Scarabaeinae)." PeerJ 5 (May 18, 2017): e3349. http://dx.doi.org/10.7717/peerj.3349.

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The insect exoskeleton is a multifunctional coat with a continuum of mechanical and structural properties constituting the barrier between electromagnetic waves and the internal body parts. This paper examines the ability of beetle exoskeleton to regulate internal body temperature considering its thermal permeability or isolation to simulated solar irradiance and infrared radiation. Seven Neotropical species of dung beetles (Coleoptera, Scarabaeinae) differing in colour, surface sculptures, size, sexual dimorphism, period of activity, guild category and altitudinal distribution were studied. Specimens were repeatedly subjected to heating trials under simulated solar irradiance and infrared radiation using a halogen neodymium bulb light with a balanced daylight spectrum and a ceramic infrared heat emitter. The volume of exoskeleton and its weight per volume unit were significantly more important for the heating rate at the beginning of the heating process than for the asymptotic maximum temperature reached at the end of the trials: larger beetles with relatively thicker exoskeletons heated more slowly. The source of radiation greatly influences the asymptotic temperature reached, but has a negligible effect in determining the rate of heat gain by beetles: they reached higher temperatures under artificial sunlight than under infrared radiation. Interspecific differences were negligible in the heating rate but had a large magnitude effect on the asymptotic temperature, only detectable under simulated sun irradiance. The fact that sun irradiance is differentially absorbed dorsally and transformed into heat among species opens the possibility that differences in dorsal exoskeleton would facilitate the heat gain under restrictive environmental temperatures below the preferred ones. The findings provided by this study support the important role played by the exoskeleton in the heating process of beetles, a cuticle able to act passively in the thermal control of body temperature without implying energetic costs and metabolic changes.

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Scandrett, Eurig, and C. H. Gimingham. "The effect of heather beetle Lochmaea suturalis on vegetation in a wet heath in NE Scotland." Ecography 14, no. 1 (1991): 24–30. http://dx.doi.org/10.1111/j.1600-0587.1991.tb00629.x.

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SADEGHI, REZA, ESMAEEL SEYEDABADI, and RAHIL MIRABI MOGHADDAM. "Microwave Application for Controlling Oryzaephilus surinamensis Insects Infesting Dried Figs and Evaluation of Product Color Changes Using an Image Processing Technique." Journal of Food Protection 82, no. 2 (2019): 184–88. http://dx.doi.org/10.4315/0362-028x.jfp-18-193.

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ABSTRACT In this study, microwave heating was employed for controlling Oryzaephilus surinamensis adult beetles infesting stored Iranian dried figs. The dried fig samples were artificially infested with O. surinamensis and then heated in a microwave oven (2,450 MHz) at power outputs of 450, 720, and 900 W for 20, 30, 40, and 50 s. Changes in the color of the samples after these microwave applications were evaluated for lightness (ΔL*), redness (Δa*), and yellowness (Δb*) using an image processing technique. Both parameters of microwave power and exposure time had significant effects on beetle mortality (P &lt; 0.01). A direct positive relationship was found between the mortality rate and microwave power. Complete mortality was achieved at 900 W and for 50 s. The color parameters of the dried fig samples did not change significantly. These results indicate that microwave irradiation can be introduced as an appropriate alternative to chemical fumigants without affecting product quality.

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Kristensen, H. L., and G. W. McCarty. "Mineralization and immobilization of nitrogen in heath soil under intact Calluna, after heather beetle infestation and nitrogen fertilization." Applied Soil Ecology 13, no. 3 (1999): 187–98. http://dx.doi.org/10.1016/s0929-1393(99)00036-0.

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Berdowski, J. J. M., and R. Zeilinga. "Transition from Heathland to Grassland: Damaging Effects of the Heather Beetle." Journal of Ecology 75, no. 1 (1987): 159. http://dx.doi.org/10.2307/2260542.

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Taboada, Angela, Elena Marcos, and Leonor Calvo. "Disruption of trophic interactions involving the heather beetle by atmospheric nitrogen deposition." Environmental Pollution 218 (November 2016): 436–45. http://dx.doi.org/10.1016/j.envpol.2016.07.023.

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Dissertations / Theses on the topic "Heather beetles"

1

Uren, Sally Clare. "The effects of wet and dry deposited ammonia on Calluna vulgaris." Thesis, Imperial College London, 1992. http://hdl.handle.net/10044/1/8895.

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Staley, Jeremy Ross. "Aspects of the population dynamics of Lochmaea suturalis Thompson (Coleoptera: Chrysomelidae; sub-family: Galerucinae), the heather beetle : a combined laboratory and modelling approach." Thesis, University of Newcastle Upon Tyne, 2000. http://hdl.handle.net/10443/956.

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This thesis describes a series of laboratory and field experiments that quantify the population dynamics of the heather beetle (Lochmaea suturalis Thomson), in relation to temperature and its host plant heather (Calluna vulgaris (L. ) Hull). The sex ratio, fecundity, egg laying threshold temperature, emergence threshold temperature, life stage development periods, and life stage mortalities were investigated. It was shown that the life stages were significantly dependent on temperature, whilst it was shown that there was no significant relationship between larval growth and Calluna vulgaris plants sourced from the study sites. The results of the population dynamics experiments were incorporated into a temperature driven, cohort based, and daily looped, stochastic population dynamics computer model. The temperature component of the model was derived from temperature data collected from nine moorland sites, at different altitudes, where there was shown to be a significant relationship between temperature and altitude. The population dynamics model was run for a fifty year period with a population of I million beetles at seven temperature regimes and five different altitudes. The model predicted that as daily mean temperatures rose, so there was a greater chance of increasing populations and that as altitude increases, so the chance of increasing populations decreases. At a predicted daily mean temperature rise of 2-3'C there was evidence of considerable population increases at lower altitudes, and with a daily mean temperature rise of 4-6'C the beetle population exhibited persistent, large, fluctuating populations in the region of three to sixty fold increases at all modelled altitudes over a number of years. An uncertainty and sensitivity analysis of the model was undertaken utilising a Latin Hypercube Swnpling regime, where it was shown that fecundity, egg mortality and pupal mortality were the most important life history variables in i contributing to the model output imprecision. The thesis discussesth eser esults in the light of predicted climate change and their use as an aid to moorland and heathland managers.

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Book chapters on the topic "Heather beetles"

1

Vermeulen, R. "The effects of different vegetation structures on the dispersal of carabid beetles from poor sandy heaths and grasslands." In Carabid Beetles: Ecology and Evolution. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-017-0968-2_59.

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