Phoretic mites on South American bumblebees (Bombus spp.) as parasite carriers: a historical input

Revainera, Pablo Damián; Quintana, Silvina; Landa, Gregorio Fernández de; Arcerito, Facundo René Meroi; Lucía, Mariano; Abrahamovich, Alberto Horacio; Plischuk, Santiago; Eguaras, Martín Javier; Maggi, Matías

doi:10.1007/s13592-020-00733-w

Cited by 11 publications

(6 citation statements)

References 57 publications

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“…Different factors are contributing to this decline, like habitat loss, climate change, urbanization, agricultural intensification, pathogens spread at global level [ 27 – 29 ], all complex variables that may act in synergy [ 30 ]. Bee pathogens show lethal and sublethal effects on bees generally reducing their lifespan [ 31 ] and among pathogens, parasites have been identified as main drivers of wild bees decline [ 32 , 33 ]. Recent works have focused on the relationship between landscape and bee pathogens, and especially vegetation cover (with different degrees of biodiversity) was reported as a determining factor in the parasites and pathogens spread and dynamics [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

The gut microbiome of solitary bees is mainly affected by pathogen assemblage and partially by land use

Landa

Alberoni

Baffoni

et al. 2023

Environmental Microbiome

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Pollinators, including solitary bees, are drastically declining worldwide. Among the factors contributing to this decline, bee pathogens and different land uses are of relevance. The link between the gut microbiome composition and host health has been recently studied for social pollinators (e.g. honeybees), whereas the information related to solitary bees is sparse. This work aimed at the characterization of the gut microbiome of the solitary bees Xylocopa augusti, Eucera fervens and Lasioglossum and attempted to correlate the gut microbial composition with the presence and load of different pathogens and land uses. Solitary bees were sampled in different sites (i.e. a farm, a natural reserve, and an urban plant nursery) showing different land uses. DNA was extracted from the gut, 16S rRNA gene amplified and sequenced. Eight pathogens, known for spillover from managed bees to wild ones, were quantified with qPCR. The results showed that the core microbiome profile of the three solitary bees significantly varied in the different species. Pseudomonas was found as the major core taxa in all solitary bees analyzed, whereas Lactobacillus, Spiroplasma and Sodalis were the second most abundant taxa in X. augusti, E. fervens and Lasioglossum, respectively. The main pathogens detected with qPCR were Nosema ceranae, Nosema bombi and Crithidia bombi, although differently abundant in the different bee species and sampling sites. Most microbial taxa did not show any correlation with the land use, apart from Snodgrassella and Nocardioides, showing higher abundances on less anthropized sites. Conversely, the pathogens species and load strongly affected the gut microbial composition, with Bifidobacterium, Apibacter, Serratia, Snodgrassella and Sodalis abundance that positively or negatively correlated with the detected pathogens load. Therefore, pathogens presence and load appear to be the main factor shaping the gut microbiome of solitary bees in Argentina.

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Section: Introductionmentioning

confidence: 99%

The gut microbiome of solitary bees is mainly affected by pathogen assemblage and partially by land use

Landa

Alberoni

Baffoni

et al. 2023

Environmental Microbiome

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“…Similarly, some developmental stages of the mite Parasitellus fucorum de Geer feed on their bumblebee host's provisions and vector bumblebee pathogens, though other stages help remove harmful arthropods from the host's nest [7,8]. Other closely allied symbionts besides parasites can be used as tools that allow the inference of information on other organisms.…”

Section: Introductionmentioning

confidence: 99%

Population Genetics of Parasites and Their Arthropod Hosts

Bezányiová

Straka

2023

Preprint

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In comparison to organisms parasitising vertebrates, parasites of arthropods are direly understudied despite their abundance, importance, and potential usefulness. Due to their close relationship and coevolution with the host, parasites can be used as tools allowing the inference of information on host life history, ecology, and past events the host species has experienced. Even though parasites comprise a diverse assemblage of taxa, it is possible to identify convergent patterns in their genetic population structure. Predictions of congruent population genetic co-structuring between hosts and parasites can be thus based on a few traits such as host specificity, life cycle complexity or parasite and/or host dispersal. The parasite may even provide better resolution of population structure than the host itself, serving as a proxy that can be used to direct conservation projects of both the host and parasite. Our review provides an overview of known cases of host-parasite population co-structuring in arthropods, identifies their common patterns, and discusses practical applications of these findings.

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“…The consequences for native pollinators, including direct competition and the spread of pathogens (Colla, Otterstatter, Gegear, & Thomson, 2006), have been in some cases devastating (e.g. the decline of Bombus dahlbomii in Chile; Morales, Arbetman, Cameron, & Aizen, 2013; but see Revainera et al., 2020), and most countries, but not all, regulate nowadays the import of exotic species (Aizen et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Morales, Arbetman, Cameron, & Aizen, 2013; but see Revainera et al, 2020), and most countries, but not all, regulate nowadays the import of exotic species (Aizen et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Safeguarding the genetic integrity of native pollinators requires stronger regulations on commercial lines

Bartomeus

Molina

Hidalgo‐Galiana

et al. 2020

Ecol Sol and Evidence

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Every year more than 1 million commercial bumblebee colonies are deployed in greenhouses worldwide for their pollination services. While commercial pollinators have been an enormous benefit for crop production, their use is emerging as an important threat. Commercial pollinators have been linked to pathogen spillover, and their introduction outside their native area has had devastating effects on native pollinators. A more pervasive but underappreciated threat is their potential impact on the genetic integrity of native pollinators. We set up a sampling and genotyping‐plus‐phenotyping protocol to evaluate the presence and extent of hybridization between commercial and native individuals of Bombus terrestris in south‐western Spain, a region experiencing a huge propagule pressure of non‐native genotypes due to the massive use of commercial colonies for crop pollination. Our genomic data show clear evidence of generalized hybridization between native and introduced commercial bumblebee lineages in southern Spain. Only 19% of analysed individuals were assigned with high confidence to the pure native genetic cluster and >45% of sampled specimens were first‐generation hybrids or backcrosses between native and commercial genotypes, indicating that genetic introgression is pervasive in southern Spain. Although the frequency of commercial genotypes sharply declined with the distance to greenhouses, non‐native alleles have introgressed into native populations inhabiting protected natural parks >60 km away from commercial bumblebee release areas. As pollination services demand will increase in the coming years, only a more restrictive regulation of commercial lines could mitigate their negative impacts on the genetic integrity of native pollinators, avoid processes of genetic homogenization, and prevent the potential disruption of local adaptations.

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Phoretic mites on South American bumblebees (Bombus spp.) as parasite carriers: a historical input

Cited by 11 publications

References 57 publications

The gut microbiome of solitary bees is mainly affected by pathogen assemblage and partially by land use

The gut microbiome of solitary bees is mainly affected by pathogen assemblage and partially by land use

Population Genetics of Parasites and Their Arthropod Hosts

Safeguarding the genetic integrity of native pollinators requires stronger regulations on commercial lines

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