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COI Metabarcoding as a Novel Approach for Assessing the Honey Bee Source of Eur...

Honrado, Mónica; Quaresma, Andreia; Henriques, Dora; Pinto, Maria Alice; Amaral, Joana S.

Honey is a widely consumed food product frequently subjected to adulteration, with the mislabeling of its botanical or geographical origin being one of the most common practices. Determining the entomological origin of honey is particularly challenging but of high relevance for ensuring its authenticity, especially for products with protected designation of origin (PDO) labels. This study presents a novel DNA m...

Date: 2025   |   Origin: Biblioteca Digital do IPB

Bioinformatics pipeline to evaluate patterns of diversity in detoxification gen...

Barbosa, Daniela; Li, Fernanda; Bashir, Sana; Lopes, Ana; Yadró García, Carlos A.; Quaresma, Andreia; Rufino, José; Rosa-Fontana, Annelise

The Western honey bee, Apis mellifera, displays significant genetic diversity in detoxification genes, which is pivotal for environmental adaptation and resilience. Herein, we developed a bioinformatics pipeline to investigate patterns of diversity in these genes, focusing on single nucleotide polymorphisms (SNPs) across A. mellifera populations, with variant annotation performed using both snpEff and the Varia...

Date: 2025   |   Origin: Biblioteca Digital do IPB

Large Scale Mitochondrial Evidence of C-lineage Dominance in European Honey Bees

Li, Fernanda; Lopes, Ana; Costa, Maíra; Henriques, Dora; Quaresma, Andreia; Yadró García, Carlos A.; Albo, Alexandre; Čereškienė, Laima Blažytė

In Europe, distribution of the several endemic honey bee (Apis mellifera) subspecies has suffered a considerable shift in the last century. In particular, beekeepers tend to favour subspecies of Eastern European ancestry (C-lineage), such as the Italian honey bee (A. m. ligustica), due to their perceived docility and high honey production. As a result, large scale migratory beekeeping and trade of C-lineage que...

Date: 2025   |   Origin: Biblioteca Digital do IPB

Maternal ancestry of honey bees on São Miguel-Azores (Portugal)

Costa, Maíra; Lopes, Ana; Doblas-Bajo, Mónica; Quaresma, Andreia; Barreira, Diogo; Henriques, Dora; Pinto, M. Alice

The Apis mellifera iberiensis was introduced to the Azores in the 16th century by Portuguese settlers likely from the northern part of mainland Portugal. Many years later, in the 1980s, occurred a new introduction using honey bee subspecies from C-lineage maternal ancestry. This left a C-lineage signature in the Azores, with some islands, such as Pico or Graciosa, showing high frequency of C-lineage maternal an...

Date: 2024   |   Origin: Biblioteca Digital do IPB

Maternal origin of honeybee (Apis mellifera) colonies from across Europe

Lopes, Ana; Costa, Maíra; Tounakti, Sahar; Henriques, Dora; Quaresma, Andreia; Yadró Garcia, Carlos A.; Albo, Alexandre; Blažytė-Čereškienė, Laima

Worldwide commercial beekeeping poses a threat to the native origin of the honeybee (Apis mellifera), with beekeepers favouring subspecies of Eastern European C-lineage ancestry, due to their docile behaviour and high honey production traits. In many parts of western and northern Europe, queens of Western European M-lineage ancestry have been massively replaced by queens of C-lineage ancestry, and this has led ...

Date: 2024   |   Origin: Biblioteca Digital do IPB

Semi-automated sequence curation for reliable reference datasets in ITS2 vascul...

Quaresma, Andreia; Ankenbrand, Markus J.; Garcia, Carlos Ariel Yadró; Rufino, José; Honrado, Mónica; Amaral, Joana S.; Brodschneider, Robert

One of the most critical steps for accurate taxonomic identification in DNA (meta)-barcoding is to have an accurate DNA reference sequence dataset for the marker of choice. Therefore, developing such a dataset has been a long-term ambition, especially in the Viridiplantae kingdom. Typically, reference datasets are constructed with sequences downloaded from general public databases, which can carry taxonomic and...

Date: 2024   |   Origin: Biblioteca Digital do IPB

Distribution of Alleles Linked to Pyrethroid and Amitraz Resistance in Varroa d...

Costa, Maíra; Yadró Garcia, Carlos A.; Lopes, Ana; Quaresma, Andreia; Rodrigues, Claúdia; Pinto, M. Alice; Henriques, Dora

Varroa destructor, an ectoparasitic mite of honey bees (Apis mellifera), is a significant threat to apiculture by causing varroosis and transmitting dangerous viruses such as the deformed wings virus. This mite can be controlled by the use of synthetic or organic acaricides. Currently, in Portugal, two classes of synthetic compounds are used: pyrethroids (fluvalinate and flumethrin), and formamidines (amitraz)....

Date: 2024   |   Origin: Biblioteca Digital do IPB

An unprecedented large-scale survey of honey bee mitochondrial diversity in Eur...

Li, Fernanda; Costa, Maíra; Lopes, Ana Rita; Gonçalves, Telma; Henriques, Dora; Quaresma, Andreia; Yadró Garcia, Carlos A.; Albo, Alexandre

Europe is home to ten Apis mellifera subspecies, which belong to three mitochondrial lineages: the Western European (M), Eastern European (C), and African (A). However, the long-standing human-mediated movement of queens, primarily of C-lineage ancestry, has threatened the genetic integrity of many of these native subspecies through introgression and replacement. This has led to the establishment of conservatio...

Date: 2024   |   Origin: Biblioteca Digital do IPB

Vespa velutina: using microsatellites to compare the genetic diversity of found...

Costa, Maíra; Quaresma, Andreia; Doblas-Bajo, Mónica; Henriques, Dora; Pinto, M. Alice

The invasive yellow-legged hornet (Vespa velutina nigrithorax) is a voracious predator of honeybees and other pollinators, its diffusion generates relevant environmental and socio-economic impacts. Native from China, it rapidly started spreading throughout Europe, after its first sight in France in 2004. V. v. nigrithorax was first reported in Portugal, in the region of Viana do Castelo, in 2011 and since then ...

Date: 2023   |   Origin: Biblioteca Digital do IPB

Vespa velutina nigrithorax intracolonial microsatellite diversity: comparison b...

Costa, Maíra; Quaresma, Andreia; Doblas-Bajo, Mónica; Maamri, Sarra; Henriques, Dora; Pinto, M. Alice

The invasive yellow-legged hornet, Vespa velutina nigrithorax, is a voracious predator of honeybees which has been causing important economic losses to apiculture across Europe. It was first seen in 2004 in France, and it rapidly spread throughout the European countries. In 2011, V. v. nigrithorax was first reported in Portugal, in the region of Viana do Castelo, and since then it has been spreading throughout ...

Date: 2023   |   Origin: Biblioteca Digital do IPB

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