Clustering honey samples with unsupervised machine learning methods using FTIR data
This study utilizes Fourier transform infrared (FTIR) data from honey samples to cluster and categorize them based on their spectral characteristics. The aim is to group similar samples together, revealing patterns and aiding in classification. The process begins by determining the number of clusters using the elbow method, resulting in five distinct clusters. Principal Component Analysis (PCA) is then applied to reduce the dataset's dimensionality by capturing its significant variances. Hierarchical Cluster Analysis (HCA) further refines the sample clusters. 20% of the data, representing identified clusters, is randomly s...
Source: An Acad Bras Cienc - March 7, 2024 Category: Science Authors: Fatih Mehmet Avcu Source Type: research
Clustering honey samples with unsupervised machine learning methods using FTIR data
This study utilizes Fourier transform infrared (FTIR) data from honey samples to cluster and categorize them based on their spectral characteristics. The aim is to group similar samples together, revealing patterns and aiding in classification. The process begins by determining the number of clusters using the elbow method, resulting in five distinct clusters. Principal Component Analysis (PCA) is then applied to reduce the dataset's dimensionality by capturing its significant variances. Hierarchical Cluster Analysis (HCA) further refines the sample clusters. 20% of the data, representing identified clusters, is randomly s...
Source: An Acad Bras Cienc - March 7, 2024 Category: Science Authors: Fatih Mehmet Avcu Source Type: research
Clustering honey samples with unsupervised machine learning methods using FTIR data
This study utilizes Fourier transform infrared (FTIR) data from honey samples to cluster and categorize them based on their spectral characteristics. The aim is to group similar samples together, revealing patterns and aiding in classification. The process begins by determining the number of clusters using the elbow method, resulting in five distinct clusters. Principal Component Analysis (PCA) is then applied to reduce the dataset's dimensionality by capturing its significant variances. Hierarchical Cluster Analysis (HCA) further refines the sample clusters. 20% of the data, representing identified clusters, is randomly s...
Source: An Acad Bras Cienc - March 7, 2024 Category: Science Authors: Fatih Mehmet Avcu Source Type: research
Clustering honey samples with unsupervised machine learning methods using FTIR data
This study utilizes Fourier transform infrared (FTIR) data from honey samples to cluster and categorize them based on their spectral characteristics. The aim is to group similar samples together, revealing patterns and aiding in classification. The process begins by determining the number of clusters using the elbow method, resulting in five distinct clusters. Principal Component Analysis (PCA) is then applied to reduce the dataset's dimensionality by capturing its significant variances. Hierarchical Cluster Analysis (HCA) further refines the sample clusters. 20% of the data, representing identified clusters, is randomly s...
Source: An Acad Bras Cienc - March 7, 2024 Category: Science Authors: Fatih Mehmet Avcu Source Type: research
Varroa destructor parasitism and Deformed wing virus infection in honey bees are linked to peroxisome ‐induced pathways
This study complements previous research with different study designs and suggests the importance of the peroxisome, which plays a key role in viral infections. (Source: Proteomics)
Source: Proteomics - March 6, 2024 Category: Biochemistry Authors: Tomas Erban,
Dominika Kadleckova,
Bruno Sopko,
Karel Harant,
Pavel Talacko,
Martin Markovic,
Martina Salakova,
Klara Kadlikova,
Ruth Tachezy,
Jan Tachezy Tags: RESEARCH ARTICLE Source Type: research
Foraging Activity of Honey Bees (Apis mellifera L., 1758) and Exposure to Cadmium: a Review
Biol Trace Elem Res. 2024 Mar 5. doi: 10.1007/s12011-024-04118-3. Online ahead of print.ABSTRACTHoney bees are commonly exposed to a broad spectrum of xenobiotics, including heavy metals. Heavy metal toxicity is of concern in the context of global pollinator declines, especially since honey bees seem to be particularly susceptible to xenobiotics in general. Here we summarize current knowledge on the interplay between cadmium, one of the most toxic and mobile elements in the environment, and honey bees, the primary managed pollinator species worldwide. Overall, cadmium pollution has been shown to be ubiquitous, affecting in...
Source: Biological Trace Element Research - March 5, 2024 Category: Biology Authors: Stephane Knoll Maria Grazia Cappai Source Type: research
Foraging Activity of Honey Bees (Apis mellifera L., 1758) and Exposure to Cadmium: a Review
Biol Trace Elem Res. 2024 Mar 5. doi: 10.1007/s12011-024-04118-3. Online ahead of print.ABSTRACTHoney bees are commonly exposed to a broad spectrum of xenobiotics, including heavy metals. Heavy metal toxicity is of concern in the context of global pollinator declines, especially since honey bees seem to be particularly susceptible to xenobiotics in general. Here we summarize current knowledge on the interplay between cadmium, one of the most toxic and mobile elements in the environment, and honey bees, the primary managed pollinator species worldwide. Overall, cadmium pollution has been shown to be ubiquitous, affecting in...
Source: Biological Trace Element Research - March 5, 2024 Category: Biology Authors: Stephane Knoll Maria Grazia Cappai Source Type: research
An engineered bacterial symbiont allows noninvasive biosensing of the honey bee gut environment
by Audam Chhun, Silvia Moriano-Gutierrez, Florian Zoppi, Am élie Cabirol, Philipp Engel, Yolanda Schaerli
The honey bee is a powerful model system to probe host –gut microbiota interactions, and an important pollinator species for natural ecosystems and for agriculture. While bacterial biosensors can provide critical insight into the complex interplay occurring between a host and its associated microbiota, the lack of methods to noninvasively sample the g ut content, and the limited genetic tools to engineer symbionts, have so far hindered their development in honey bees. Here, we built a versatile molecular tool kit t...
Source: PLoS Biology: Archived Table of Contents - March 5, 2024 Category: Biology Authors: Audam Chhun Source Type: research
Bumble bee microbiota shows temporal succession and increase of lactic acid bacteria when exposed to outdoor environments
ConclusionThe bumble bee microbiota showed a dynamic temporal succession with distinct compositional changes and diversification over time when placed outdoor. The exposure of bumble bees to environmental conditions, or environmental microbes, increases dissimilarity and changes the gut-community composition. This shows the importance of environmental influences on the temporal dynamic and progression of the bumble bee microbiota. (Source: Frontiers in cellular and infection microbiology)
Source: Frontiers in cellular and infection microbiology - March 4, 2024 Category: Microbiology Source Type: research
Hyoid Bone Movement During Swallowing in Female Thyroidectomy Patients: A Kinematic Ultrasound Study
AbstractThe aim of this study was to investigate the measures of displacement, time and velocity of hyoid bone movement in female thyroidectomy patients. Fifty-eight ultrasound videos of 29 women during swallowing were analyzed. The sample was divided into experimental group (EG), composed of 12 women following total or partial thyroidectomy; and control group (CG) of 17 healthy women. The kinematic measures of displacement, time and velocity of hyoid bone displacement were tracked during swallowing of 10 ml of liquid (water) and 10 ml of thickened liquid (honey) in both groups for comparisons. Additional analysis inclu...
Source: Dysphagia - March 4, 2024 Category: Speech-Language Pathology Source Type: research
Protein subcellular relocalization and function of duplicated flagellar calcium binding protein genes in honey bee trypanosomatid parasite
by Xuye Yuan, Tatsuhiko Kadowaki
The honey bee trypanosomatid parasite,Lotmaria passim, contains two genes that encode the flagellar calcium binding protein (FCaBP) through tandem duplication in its genome. FCaBPs localize in the flagellum and entire body membrane ofL.passim through specific N-terminal sorting sequences. This finding suggests that this is an example of protein subcellular relocalization resulting from gene duplication, altering the intracellular localization of FCaBP. However, this phenomenon may not have occurred inLeishmania, as one or both of the duplicated genes have become pseudogenes. Multiple copie...
Source: PLoS Genetics - March 4, 2024 Category: Genetics & Stem Cells Authors: Xuye Yuan Source Type: research
Post-invasion selection acts on standing genetic variation despite a severe founding bottleneck
Curr Biol. 2024 Feb 21:S0960-9822(24)00152-0. doi: 10.1016/j.cub.2024.02.010. Online ahead of print.ABSTRACTInvasive populations often have lower genetic diversity relative to the native-range populations from which they derive.1,2 Despite this, many biological invaders succeed in their new environments, in part due to rapid adaptation.3,4,5,6 Therefore, the role of genetic bottlenecks in constraining the adaptation of invaders is debated.7,8,9,10 Here, we use whole-genome resequencing of samples from a 10-year time-series dataset, representing the natural invasion of the Asian honey bee (Apis cerana) in Australia, to inve...
Source: Current Biology - March 1, 2024 Category: Biology Authors: Kathleen A Dogantzis Rika Raffiudin Ramadhani Eka Putra Ismail Shaleh Ida M Conflitti Mateus Pepinelli John Roberts Michael Holmes Benjamin P Oldroyd Amro Zayed Rosalyn Gloag Source Type: research
Post-invasion selection acts on standing genetic variation despite a severe founding bottleneck
Curr Biol. 2024 Feb 21:S0960-9822(24)00152-0. doi: 10.1016/j.cub.2024.02.010. Online ahead of print.ABSTRACTInvasive populations often have lower genetic diversity relative to the native-range populations from which they derive.1,2 Despite this, many biological invaders succeed in their new environments, in part due to rapid adaptation.3,4,5,6 Therefore, the role of genetic bottlenecks in constraining the adaptation of invaders is debated.7,8,9,10 Here, we use whole-genome resequencing of samples from a 10-year time-series dataset, representing the natural invasion of the Asian honey bee (Apis cerana) in Australia, to inve...
Source: Current Biology - March 1, 2024 Category: Biology Authors: Kathleen A Dogantzis Rika Raffiudin Ramadhani Eka Putra Ismail Shaleh Ida M Conflitti Mateus Pepinelli John Roberts Michael Holmes Benjamin P Oldroyd Amro Zayed Rosalyn Gloag Source Type: research
Chemical Profile and Biological Potential of Scaptotrigona Bee Products (Hymenoptera, Apidae, Meliponini): An review
Chem Biodivers. 2024 Feb 28:e202301962. doi: 10.1002/cbdv.202301962. Online ahead of print.ABSTRACTStingless bees belong to the Meliponini tribe and are widely distributed in the tropics and subtropics, where they perform important ecological services. Among the best distributed groups of stingless bees is the genus Scaptotrigona, which includes 22 species distributed throughout the neotropical region, including the area from Mexico to Argentina. Bees of this genus are responsible for the production of products such as honey, propolis, geopropolis and fermented pollen ("saburá"). This review aimed to provide an overview o...
Source: Chemistry and Biodiversity - February 28, 2024 Category: Biochemistry Authors: Zildene de Sousa Silveira Nair Silva Mac êdo Silva Macêdo D ébora de Menezes Dantas Samuel Vieira Brito Helcio Silva Silva Dos Santos Renata Val éria Regis de Sousa Gomese Henrique Douglas Assis Melo Coutinho Francisco Assis Assis Bezerra da Cunha M Source Type: research
Genomic characterization, phylogenetic and expression analysis of foraging gene in Apis mellifera
Gene. 2024 Feb 24:148318. doi: 10.1016/j.gene.2024.148318. Online ahead of print.ABSTRACTThe genomic characterization of the foraging gene and its expression analysis are required to better understand the behavior of honey bees (Apis mellifera). The present study performed a genome-wide characterization of the foraging gene, analyzing its physicochemical properties, phylogenetic features, and expression. An in silico analysis was carried out to characterize the foraging gene and the motifs and conserved domains of the encoded protein to predict its physicochemical properties. Moreover, a phylogenetic analysis of the foragi...
Source: Gene - February 26, 2024 Category: Genetics & Stem Cells Authors: Salim Morammazi Borhan Shokrollahi Faiz-Ul Hassan Source Type: research
