Results 91 to 100 of about 406 (125)
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Nosema bombi: A pollinator parasite with detrimental fitness effects
Journal of Invertebrate Pathology, 2007Nosema bombi is an obligate intracellular parasite that infects different bumblebee species at a substantial, though variable, rate. To date its pathology and impact on host fitness are not well understood. We performed a laboratory experiment investigating the pathology and fitness effects of this parasite on the bumblebee Bombus terrestris.
Otti O, Schmid-Hempel P
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Environmental Microbiology Reports, 2017
An initial survey in 2009 carried out at a site in northwestern Patagonia region, Argentina, revealed for the first time in South America the presence of the flagellate Crithidia bombi and the neogregarine Apicystis bombi, two pathogens associated with the Palaearctic invasive bumble bee Bombus terrestris.
Santiago Plischuk +2 more
exaly +2 more sources
An initial survey in 2009 carried out at a site in northwestern Patagonia region, Argentina, revealed for the first time in South America the presence of the flagellate Crithidia bombi and the neogregarine Apicystis bombi, two pathogens associated with the Palaearctic invasive bumble bee Bombus terrestris.
Santiago Plischuk +2 more
exaly +2 more sources
Multiple rRNA Variants in a Single Spore of the Microsporidian Nosema bombi
Journal of Eukaryotic Microbiology, 2007ABSTRACT. To understand the source of the multiple DNA sequence variants of Nosema bombi ribosomal RNA (rRNA) found in a single bumble bee host, we PCR amplified, cloned, and sequenced the partial rRNA gene from 125 clones, which were derived from four out of 46 spores individually isolated from a single host by laser microdissection.
Elaine M, O'Mahony +2 more
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A scientific note on Nosema bombi infection intensity among different castes within a Bombus auricomus nest [PDF]
Apidologie, 2016 Bumble bees (Bombus) provide vital services to agricultural and natural plant systems (Kremen et al. 2002; Fontaine et al. 2006). A survey across diverse North American Bombus species detected higher prevalence of infection by the microsporidian parasite Nosema bombi in declining relative to non-declining species, indicating a correlation between ...
Chia-Ching Chu, Sydney A Cameron
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The Absence of Nosema bombi in Bumblebees (Bombus spp.) on Farms in Michigan
American Midland Naturalist, 2019The fungal pathogen Nosema bombi impacts bumblebee fitness and is a factor in population declines throughout North America. Pesticides are also thought to contribute to declines, because they harm the innate immune system of insects, making them more susceptible to disease.
Britton Skuse +2 more
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Effects of Nosema bombi and its treatment fumagillin on bumble bee (Bombus occidentalis) colonies
Journal of Invertebrate Pathology, 2003We examined the effects of Nosema bombi (Microsporidia: Nosematidae) on colonies of bumble bees, Bombus occidentalis Greene (Hymenoptera: Apidae), used to pollinate tomatoes in commercial greenhouses. We assessed methods of detecting N. bombi and tested the effectiveness of fumagillin to control this parasite. N.
Robin, Whittington, Mark L, Winston
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Insectes Sociaux, 1999
Crithidia bombi is a prevalent endoparasite of bumblebees that is transmitted both horizontally between and vertically within colonies of its host, the bumble bee Bombus terrestris, and to the next generation. By experimentally infecting or not infecting laboratory-raised colonies with a standard inoculum before their transfer to the field, this study ...
B. Imhoof, P. Schmid-Hempel
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Crithidia bombi is a prevalent endoparasite of bumblebees that is transmitted both horizontally between and vertically within colonies of its host, the bumble bee Bombus terrestris, and to the next generation. By experimentally infecting or not infecting laboratory-raised colonies with a standard inoculum before their transfer to the field, this study ...
B. Imhoof, P. Schmid-Hempel
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Journal of Invertebrate Pathology, 2007
In three field seasons, 2003-2005, bumble bees were collected in southern Sweden and eastern Denmark in search of microsporidian parasites. Of the 16 bumble bee species studied, microsporidia were found in Bombus hortorum, Bombus hypnorum, Bombus lapidarius, Bombus lucorum, Bombus pascuorum, Bombus pratorum, Bombus ruderarius, Bombus subterraneus and ...
exaly +3 more sources
In three field seasons, 2003-2005, bumble bees were collected in southern Sweden and eastern Denmark in search of microsporidian parasites. Of the 16 bumble bee species studied, microsporidia were found in Bombus hortorum, Bombus hypnorum, Bombus lapidarius, Bombus lucorum, Bombus pascuorum, Bombus pratorum, Bombus ruderarius, Bombus subterraneus and ...
exaly +3 more sources
Journal of Invertebrate Pathology, 2012
Bumblebees are of profound ecological importance because of the pollination services they provide in natural and agricultural ecosystems. Any decline of these pollinators is therefore of great concern for ecosystem functioning. Increased parasite pressures have been discussed as a major factor for the loss of pollinators.
Anett, Huth-Schwarz +3 more
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Bumblebees are of profound ecological importance because of the pollination services they provide in natural and agricultural ecosystems. Any decline of these pollinators is therefore of great concern for ecosystem functioning. Increased parasite pressures have been discussed as a major factor for the loss of pollinators.
Anett, Huth-Schwarz +3 more
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Apidologie, 2008
Successful growth and transmission is a prerequisite for a parasite to maintain itself in its host population. Nosema bombi is a ubiquitous and damaging parasite of bumble bees, but little is known about its transmission and epidemiology within bumble bee colonies. The impact of host demography and colony life-cycle on the transmission and reproduction
Rutrecht, Samina T., Brown, Mark J F
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Successful growth and transmission is a prerequisite for a parasite to maintain itself in its host population. Nosema bombi is a ubiquitous and damaging parasite of bumble bees, but little is known about its transmission and epidemiology within bumble bee colonies. The impact of host demography and colony life-cycle on the transmission and reproduction
Rutrecht, Samina T., Brown, Mark J F
openaire +7 more sources