Background: The reported massive decline of arthropods and particularly of pollinators such as wild bees, in terms of abundance and richness, is a threat for crop production and wild plant biodiversity conservation. This decline is mainly explained by a combination of drivers at local- and landscape-scale related to intensive farming practices. Assessing the evolution of wild bee communities in agricultural ecosystems and their response to such practices is needed to address conservation purposes.
New Information: We provide here data for the 24,329 wild bee specimens held in the collection of DYNAFOR Lab (UMR 1201 INRAE, INP-ENSAT, EI PURPAN), located at INP-ENSAT (Toulouse, France). All bee specimens were collected from the long term socio-ecological research site, ZA-PYGAR, located in south-west France, for more than 10 years (2010 to 2022) within the framework of different research programmes conducted by the DYNAFOR Lab. At least 270 species, representative of the six wild bee families, were identified from this area. The identified specimens are considered reliable as identifications were performed or have been verified by community-recognised experts. In addition, ongoing DNA barcoding performed on certain specimens helped clarify questionable morphological characters and provided cross-validation of species identification.
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http://dx.doi.org/10.3897/BDJ.12.e135157 | DOI Listing |
Sci Total Environ
December 2024
Department of Ecology, Evolution, and Organismal Biology, Iowa State University, Ames, IA, USA; Department of Plant Pathology, Entomology and Microbiology, Iowa State University, Ames, IA, USA. Electronic address:
Health and population status of bees is negatively affected by anthropogenic stressors, many of which co-occur in agricultural settings. While pollinator habitat (often involving plantings of native forbs) holds promise to benefit both managed and wild bees, important issues remain unresolved. These include whether conventional, broad-spectrum insecticide use negates these benefits and how non-native, managed honey bees affect wild bees in these areas.
View Article and Find Full Text PDFEcol Evol
December 2024
Univ Lille, CNRS, UMR 8198-Evo-Eco-Paleo Lille France.
The growing urbanization process is accompanied by the emergence of new habitats for wildlife, and cities are sometimes seen as refuges for pollinators such as wild bees compared to intensively cultivated rural habitats. However, the contrasting living conditions that combine high fragmentation, exposure to pollutants, and heat island effects, with low pesticide use and potentially high availability of resources, make it difficult to predict the overall effect of urban living on the health of wild bees. Moreover, if the responses of wild bee populations in terms of species richness and diversity have been the focus of many recent studies, individual responses to urbanization have been more rarely investigated.
View Article and Find Full Text PDFEnviron Toxicol Pharmacol
December 2024
Dipartimento di Agricoltura, Alimentazione e Ambiente, sez. Entomologia applicata. Università degli Studi di Catania, Via S. Sofia 100, Catania 95123, Italy.
Ground-nesting solitary bees are the most abundant bee species in the xeric areas of the world, but the effects of agrochemicals on them have been little studied. Herein, we evaluated the topical toxicity of an insecticide, a herbicide, and an essential oil on Mediterranean ground-nesting bees (Andrena impunctata, A. nigroolivacea, A.
View Article and Find Full Text PDFJ Exp Biol
December 2024
Department of Biology, University of Central Oklahoma, Edmond, OK 73034, USA.
Organisms may simultaneously face thermal, desiccation and nutritional stress under climate change. Understanding the effects arising from the interactions among these stressors is relevant for predicting organisms' responses to climate change and for developing effective conservation strategies. Using both dynamic and static protocols, we assessed for the first time how sublethal desiccation exposure (at 16.
View Article and Find Full Text PDFPLoS One
December 2024
Department of Animal Science, Universidad Nacional de Colombia, Sede Palmira, Valle del Cauca, Colombia.
This study examined the ectoparasites in free-living wild bee colonies in Totoró, Cauca Department, and Valle del Cauca, Colombia. Researchers collected 2116 bee specimens: 620 from Cauca (200 Apis mellifera, 320 Partamona peckolti, and 100 Paratrigona eutaeniata) and 1496 from Valle del Cauca (Dagua, Tocota, Buga, Cali, Pradera), including 1498 A. mellifera and 48 Tetragonisca angustula.
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