The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform
Olivier Sparagano - One of the best experts on this subject based on the ideXlab platform.
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Impeding movement of the poultry red mite, Dermanyssus gallinae
Veterinary Parasitology, 2016Co-Authors: James Pritchard, Tatiana Kuster, Olivier Sparagano, David George, Fiona M. TomleyAbstract:The poultry red mite, Dermanyssus gallinae, is an economically important hematophagous parasite of commercial egg laying hens, also affecting domesticated birds and companion animals. Conventional control of D. gallinae through acaricidal spraying is often ineffective, creating an urgent need to identify alternative management strategies for commercial and domestic infestations. Whilst integrated pest management is being considered for D. gallinae, the potential of impeding mite 'migration' routes, to either prevent initial infestation or manage established populations, has not been researched. Here we demonstrate that barriers of insecticidal glue, double sided sticky tape and thyme oil can contain D. gallinae within a specified area of a petri dish (78-88% of total mite population) and this level of containment was significantly greater than for negative controls (p values
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Associations Between the Level of Biosecurity and Occurrence of Dermanyssus gallinae and Salmonella spp. in Layer Farms.
Avian Diseases, 2016Co-Authors: Driton Sylejmani, Olivier Sparagano, Arben Musliu, Naser Ramadani, Afrim HamidiAbstract:Salmonella and the poultry red mite (Dermanyssus gallinae) remain very challenging diseases for the poultry industry worldwide because of the inefficiency of implementing and integrating eradication and control programs, which results in very high economic losses to the poultry industry. The aim of this study was to determine the association between biosecurity levels in layer farms and the occurrence of both D. gallinae and Salmonella spp., as well as the relationship between D. gallinae infestations on farms and Salmonella occurrence. For this purpose, 22 layer farms using the common battery cage housing system in different parts of Kosovo were randomly selected and analyzed for the presence of D. gallinae and Salmonella in samples, such as feces, water, feed, and dust. Two pooled samples of D. gallinae (2n = 100) were directly analyzed for the presence of Salmonella in the outer and inner parts of cuticula from D. gallinae. A chi-square test was used to determine the association between experience in poultry production, rearing, and level of different biosecurity elements in relation to the occurrence of D. gallinae and Salmonella. Dermanyssus gallinae was found on 15 farms, whereas Salmonella was found on eight of those 15 farms from different environmental samples and on one farm where D. gallinae was not found. In two pooled samples Salmonella was isolated directly from the inner part of the cuticula from D. gallinae, which represents the first direct isolation of Salmonella from D. gallinae mites. Association between the level of biosecurity and the occurrence of D. gallinae and Salmonella was strong. The study indicates that proper biosecurity measures should be in place to lower the occurrence of D. gallinae and Salmonella.
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Understanding the biology and control of the poultry red mite Dermanyssus gallinae: a review
Avian Pathology, 2015Co-Authors: James Pritchard, Tatiana Kuster, Olivier Sparagano, Fiona TomleyAbstract:© 2015 Houghton Trust Ltd. Dermanyssus gallinae, the poultry red mite (PRM), is a blood-feeding ectoparasite capable of causing pathology in birds, amongst other animals. It is an increasingly important pathogen in egg layers and is responsible for substantial economic losses to the poultry industry worldwide. Even though PRM poses a serious problem, very little is known about the basic biology of the mite. Here we review the current body of literature describing red mite biology and discuss how this has been, or could be, used to develop methods to control PRM infestations. We focus primarily on the PRM digestive system, salivary glands, nervous system and exoskeleton and also explore areas of PRM biology which have to date received little or no study but have the potential to offer new control targets.
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Parasitism in egg production systems: the role of the red mite ( Dermanyssus gallinae )
Improving the Safety and Quality of Eggs and Egg Products, 2014Co-Authors: Olivier Sparagano, Annunziata GiangasperoAbstract:Abstract: Parasites are a problem wherever poultry are raised, either in large poultry infrastructures or small backyard flocks, and are responsible for economic losses that can be significant. This chapter will discuss the most economically important parasites, all having a negative impact on egg production and egg quality. However, it will mostly focus on the red mite, Dermanyssus gallinae, because of its outstanding negative impact on animal health, welfare and production. The authors will review different aspects including biology of red mites and new insights of its control.
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Significance and Control of the Poultry Red Mite, Dermanyssus gallinae
Annual Review of Entomology, 2014Co-Authors: Olivier Sparagano, David Harrington, David George, Annunziata GiangasperoAbstract:The poultry red mite, Dermanyssus gallinae, poses a significant threat to poultry production and hen health in many parts of the world. With D. gallinae increasingly suspected of being a disease vector, and reports indicating that attacks on alternative hosts, including humans, are becoming more common, the economic importance of this pest has increased greatly. As poultry production moves away from conventional cage systems in many parts of the world, D. gallinae is likely to become more abundant and difficult to control. Control remains dominated by the use of synthetic acaricides, although resistance and treatment failure are widely reported. Alternative control measures are emerging from research devoted to D. gallinae and its management. These alternative control measures are beginning to penetrate the market, although many remain at the precommercial stage. This review compiles the expanding body of research on D. gallinae and assesses options for its current and future control. We conclude that significant advances in D. gallinae control are most likely to come through an integrated approach adopting recent research into existing and novel control strategies; this is being combined with improved monitoring and modeling to better inform treatment interventions.
Jeehwan Yi - One of the best experts on this subject based on the ideXlab platform.
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acaricidal activity of plant essential oils against Dermanyssus gallinae acari dermanyssidae
Veterinary Parasitology, 2004Co-Authors: Jeehwan YiAbstract:Abstract The acaricial activity of 56 plant essential oils against poultry house-collected adult Dermanyssus gallinae De Geer was examined using direct contact and fumigation methods. In a filter paper contact bioassay, 100% mortality at 0.07 mg cm−2 was observed in bay, cade, cinnamon, clove bud, coriander, horseradish, lime dis 5F, mustard, pennyroyal, pimento berry, spearmint, thyme red and thyme white oils, whereas the mortality of these oils was significantly decreased at 0.02 mg cm−2. In fumigation tests with adult D. gallinae at 0.28 mg cm−2, cade, clove bud, coriander, horseradish and mustard oils were more effective in closed containers than in open ones, indicating that the effect of these essential oils was largely due to action in the vapour phase. Plant essential oils described herein merit further study as potential D. gallinae control agents.
David George - One of the best experts on this subject based on the ideXlab platform.
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Impeding movement of the poultry red mite, Dermanyssus gallinae
Veterinary Parasitology, 2016Co-Authors: James Pritchard, Tatiana Kuster, Olivier Sparagano, David George, Fiona M. TomleyAbstract:The poultry red mite, Dermanyssus gallinae, is an economically important hematophagous parasite of commercial egg laying hens, also affecting domesticated birds and companion animals. Conventional control of D. gallinae through acaricidal spraying is often ineffective, creating an urgent need to identify alternative management strategies for commercial and domestic infestations. Whilst integrated pest management is being considered for D. gallinae, the potential of impeding mite 'migration' routes, to either prevent initial infestation or manage established populations, has not been researched. Here we demonstrate that barriers of insecticidal glue, double sided sticky tape and thyme oil can contain D. gallinae within a specified area of a petri dish (78-88% of total mite population) and this level of containment was significantly greater than for negative controls (p values
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Significance and Control of the Poultry Red Mite, Dermanyssus gallinae
Annual Review of Entomology, 2014Co-Authors: Olivier Sparagano, David Harrington, David George, Annunziata GiangasperoAbstract:The poultry red mite, Dermanyssus gallinae, poses a significant threat to poultry production and hen health in many parts of the world. With D. gallinae increasingly suspected of being a disease vector, and reports indicating that attacks on alternative hosts, including humans, are becoming more common, the economic importance of this pest has increased greatly. As poultry production moves away from conventional cage systems in many parts of the world, D. gallinae is likely to become more abundant and difficult to control. Control remains dominated by the use of synthetic acaricides, although resistance and treatment failure are widely reported. Alternative control measures are emerging from research devoted to D. gallinae and its management. These alternative control measures are beginning to penetrate the market, although many remain at the precommercial stage. This review compiles the expanding body of research on D. gallinae and assesses options for its current and future control. We conclude that significant advances in D. gallinae control are most likely to come through an integrated approach adopting recent research into existing and novel control strategies; this is being combined with improved monitoring and modeling to better inform treatment interventions.
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Opportunities for integrated pest management to control the Poultry Red Mite, Dermanyssus gallinae
Worlds Poultry Science Journal, 2011Co-Authors: David Harrington, David George, Jonathan Guy, Olivier SparaganoAbstract:Dermanyssus gallinae is the most economically important ectoparasite of laying hens in Europe. Control of D. gallinae is already hampered by issues of pesticide resistance and product withdrawal. W...
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Environmental interactions with the toxicity of plant essential oils to the poultry red mite Dermanyssus gallinae.
Medical and Veterinary Entomology, 2010Co-Authors: David George, Olivier Sparagano, Gordon Port, Edward J. Okello, Robert Shiel, Jonathan GuyAbstract:The toxicity of a range of plant essential oils to the poultry red mite, Dermanyssus gallinae (De Geer) (Acari: Dermanyssidae), a serious ectoparasitic pest of laying hens throughout Europe and elsewhere, was assessed in the laboratory. Dermanyssus gallinae may cause losses in egg production, anaemia and, in extreme cases, death of hens. With changes in legislation and consumer demand, alternatives to synthetic acaricides are needed to manage this pest. Fifty plant essential oils were selected for their toxicity to arthropods reported in the literature. Twenty-four of these essential oils were found to kill > 75% of adult D. gallinae in contact toxicity tests over a 24-h period at a rate of 0.21 mg/cm2. Subsequent testing at lower rates showed that the essential oils of cade, manuka and thyme were especially toxic to adult D. gallinae. The toxicity of the seven most acaricidal essential oils was found to be stable at different temperatures likely to be encountered in commercial poultry housing (15°C, 22°C and 29°C), although results suggest that humidity and dust might influence the toxicity of some of the oils tested. The toxicity of clove bud essential oil to D. gallinae, for example, was increased at high humidity and dust levels compared with ambient levels. The results suggest that certain essential oils may make effective botanical pesticides for use against D. gallinae, although it is likely that issues relating to the consistency of the toxic effect of some oils will determine which oils will be most effective in practice.
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TOXICITY OF GERANIOL SOLUTION IN VITRO TO THE POULTRY RED MITE, Dermanyssus gallinae
Parasite, 2009Co-Authors: David George, Jean Biron, Gilbert Jolly, Gérard Duvallet, Olivier SparaganoAbstract:Geraniol is a bioactive component found in Palmarosa essential oil which has previously demonstrated good repellence to cattle ticks, mosquitoes and sand flies. The toxicity of geraniol to Dermanyssus gallinae, the most economically deleterious ectoparasite of laying hens in Europe, was studied in vitro in the laboratory, Exposure of D. gallinae to 0.5, 1 and 2% concentrations of geraniol (equaling approximately to 0.02, 0.04 and 0.07 mg/cm(2) geraniol, respectively) over a period of 24 hours resulted in 100% mortality of D. gallinae at all doses used.
Olivier A. E. Sparagano - One of the best experts on this subject based on the ideXlab platform.
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Immune responses of the domestic fowl to Dermanyssus gallinae under laboratory conditions
Parasitology Research, 2010Co-Authors: David W. J. Harrington, Karen Robinson, Olivier A. E. SparaganoAbstract:There appear to be few reports in the literature regarding the host–poultry red mite ( Dermanyssus gallinae ) immunological relationship, despite the negative impact D. gallinae can have on both bird welfare and egg production, as well as its potential to act as a reservoir of zoonotic infections. The current study investigated the effect of either continuous infestation (CI) for 22 days or repeated infestation (RI) for four 24-h periods 7 days apart with D. gallinae on humoral immunity (IgM and IgY) and Th1/Th2 cytokine mRNA expression in peripheral blood mononuclear cells (PBMC) compared to non-infested controls. Serum IgY levels and IgM concentration were significantly higher in CI than RI and control birds although Th1 and Th2 mRNA expression in PBMC did not differ significantly between groups. D. gallinae appeared to modify reproductive behaviour and progeny survival following successive feeding events. In the RI group, the proportion of eggs/mite was significantly higher ( P
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Variation in chemical composition and acaricidal activity against Dermanyssus gallinae of four eucalyptus essential oils
Experimental and Applied Acarology, 2009Co-Authors: David R. George, Dino Masic, Olivier A. E. SparaganoAbstract:The results of this study suggest that certain eucalyptus essential oils may be of use as an alternative to synthetic acaricides in the management of the poultry red mite, Dermanyssus gallinae . At a level of 0.21 mg/cm², the essential oil from Eucalyptus citriodora achieved 85% mortality in D . gallinae over a 24 h exposure period in contact toxicity tests. A further two essential oils from different eucalyptus species, namely E. globulus and E. radiata , provided significantly ( P
Jonathan Guy - One of the best experts on this subject based on the ideXlab platform.
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Opportunities for integrated pest management to control the Poultry Red Mite, Dermanyssus gallinae
Worlds Poultry Science Journal, 2011Co-Authors: David Harrington, David George, Jonathan Guy, Olivier SparaganoAbstract:Dermanyssus gallinae is the most economically important ectoparasite of laying hens in Europe. Control of D. gallinae is already hampered by issues of pesticide resistance and product withdrawal. W...
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Environmental interactions with the toxicity of plant essential oils to the poultry red mite Dermanyssus gallinae.
Medical and Veterinary Entomology, 2010Co-Authors: David George, Olivier Sparagano, Gordon Port, Edward J. Okello, Robert Shiel, Jonathan GuyAbstract:The toxicity of a range of plant essential oils to the poultry red mite, Dermanyssus gallinae (De Geer) (Acari: Dermanyssidae), a serious ectoparasitic pest of laying hens throughout Europe and elsewhere, was assessed in the laboratory. Dermanyssus gallinae may cause losses in egg production, anaemia and, in extreme cases, death of hens. With changes in legislation and consumer demand, alternatives to synthetic acaricides are needed to manage this pest. Fifty plant essential oils were selected for their toxicity to arthropods reported in the literature. Twenty-four of these essential oils were found to kill > 75% of adult D. gallinae in contact toxicity tests over a 24-h period at a rate of 0.21 mg/cm2. Subsequent testing at lower rates showed that the essential oils of cade, manuka and thyme were especially toxic to adult D. gallinae. The toxicity of the seven most acaricidal essential oils was found to be stable at different temperatures likely to be encountered in commercial poultry housing (15°C, 22°C and 29°C), although results suggest that humidity and dust might influence the toxicity of some of the oils tested. The toxicity of clove bud essential oil to D. gallinae, for example, was increased at high humidity and dust levels compared with ambient levels. The results suggest that certain essential oils may make effective botanical pesticides for use against D. gallinae, although it is likely that issues relating to the consistency of the toxic effect of some oils will determine which oils will be most effective in practice.