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  1. Article ; Online: Warming and elevated CO

    Alzate-Marin, Ana Lilia / Rivas, Priscila Marlys Sá / Galaschi-Teixeira, Juliana S / Bonifácio-Anacleto, Fernando / Silva, Carolina Costa / Schuster, Ivan / Nazareno, Alison Gonçalves / Giuliatti, Silvana / da Rocha Filho, Léo Correia / Garófalo, Carlos A / Martinez, Carlos A

    The Science of the total environment

    2021  Volume 768, Page(s) 144899

    Abstract: Tropical plant species are vulnerable to climate change and global warming. Since flowering is a critical factor for plant reproduction and seed-set, warming and elevated atmospheric carbon dioxide concentrations ( ... ...

    Abstract Tropical plant species are vulnerable to climate change and global warming. Since flowering is a critical factor for plant reproduction and seed-set, warming and elevated atmospheric carbon dioxide concentrations (eCO
    MeSH term(s) Animals ; Bees ; Carbon Dioxide ; Climate Change ; Flowers ; Insecta ; Pollination ; Reproduction
    Chemical Substances Carbon Dioxide (142M471B3J)
    Language English
    Publishing date 2021-01-29
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2020.144899
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 949: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  2. Article: Morphological, chemical, and molecular analyses differentiate populations of the subterranean nesting stingless bee Mourella caerulea (Apidae: Meliponini)

    Galaschi-Teixeira, Juliana S / Maria Juliana Ferreira-Caliman / Sidia Witter / Tiago Falcon / Tiago Maurício Francoy

    Apidologie. 2018 June, v. 49, no. 3

    2018  

    Abstract: To characterize the populational diversity of Mourella caerulea, an endemic stingless bee from the Pampa biome, we collected workers of the stingless bee Mourella caerulea from 24 colonies of five localities in Southern Brazil and analyzed it using ... ...

    Abstract To characterize the populational diversity of Mourella caerulea, an endemic stingless bee from the Pampa biome, we collected workers of the stingless bee Mourella caerulea from 24 colonies of five localities in Southern Brazil and analyzed it using geometric morphometrics of forewings, mtDNA cytochrome oxidase I variability, and cuticular hydrocarbon (CHC) chemical analysis. The morphometric analysis discriminated the populations of M. caerulea from different physiographic regions. There was a positive correlation between morphometric and geographic distances. CHC profiles also differentiated the colonies from different localities. We found six particular haplotypes, nucleotide diversity (π) of 0.01631, and a haplotype diversity (Hd) of 0.74. In this sense, the comparison of the population belonging to different physiographic regions indicates that we need to give particular attention to M. caerulea at the moment of creating conservation strategies for South Brazilian Fauna, once it is the only species of this monospecific genus, and its populations are much differentiated from each other.
    Keywords Apidae ; chemical analysis ; cytochrome-c oxidase ; ecological zones ; ecosystems ; fauna ; genetic variation ; geometry ; haplotypes ; mitochondrial DNA ; morphometry ; nesting ; stingless bees ; wings ; Brazil
    Language English
    Dates of publication 2018-06
    Size p. 367-377.
    Publishing place Springer Paris
    Document type Article
    ZDB-ID 280429-3
    ISSN 1297-9678 ; 0044-8435 ; 0365-5407
    ISSN (online) 1297-9678
    ISSN 0044-8435 ; 0365-5407
    DOI 10.1007/s13592-018-0563-5
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 2244: Show issues

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  3. Article: Warming and elevated CO2 induces changes in the reproductive dynamics of a tropical plant species

    Alzate-Marin, Ana Lilia / Rivas, Priscila Marlys Sá / Galaschi-Teixeira, Juliana S / Bonifácio-Anacleto, Fernando / Silva, Carolina Costa / Schuster, Ivan / Nazareno, Alison Gonçalves / Giuliatti, Silvana / da Rocha Filho, Léo Correia / Garófalo, Carlos A / Martinez, Carlos A

    Science of the total environment. 2021 May 10, v. 768

    2021  

    Abstract: Tropical plant species are vulnerable to climate change and global warming. Since flowering is a critical factor for plant reproduction and seed-set, warming and elevated atmospheric carbon dioxide concentrations (eCO₂) are crucial climate change factors ...

    Abstract Tropical plant species are vulnerable to climate change and global warming. Since flowering is a critical factor for plant reproduction and seed-set, warming and elevated atmospheric carbon dioxide concentrations (eCO₂) are crucial climate change factors that can affect plant reproductive dynamics and flowering related events in the tropics. Using a combined free-air CO₂ enrichment and a free-air temperature-controlled enhancement system, we investigate how warming (+2 °C above ambient, eT) and elevated [CO₂] (~600 ppm, eCO₂) affect the phenological pattern, plant-insect interactions, and outcrossing rates in the tropical legume forage species Stylosanthes capitata Vogel (Fabaceae). In comparison to the control, a significantly greater number of flowers (NF) per plot (+62%) were observed in eT. Furthermore, in warmed plots flowers began opening approximately 1 h earlier (~09:05), with a canopy temperature of ~23 °C, than the control (~09:59) and eCO₂ (~09:55) treatments. Flower closure occurred about 3 h later in eT (~11:57) and control (~13:13), with a canopy temperature of ~27 °C. These changes in flower phenology increased the availability of floral resources and attractiveness for pollinators such as Apis mellifera L. and visitors such as Paratrigona lineata L., with significant interactions between eT treatments and insect visitation per hour/day, especially between 09:00–10:40. In comparison to the control, the additive effects of combined eCO₂ + eT enhanced the NF by 137%, while the number of A. mellifera floral visits per plot/week increased by 83% during the period of greatest flower production. Although we found no significant effect of treatments on mating system parameters, the overall mean multilocus outcrossing rate (tm = 0.53 ± 0.03) did confirm that S. capitata has a mixed mating system. The effects of elevated [CO₂] and warming on plant-pollinator relationships observed here may have important implications for seed production of tropical forage species in future climate scenarios.
    Keywords Apis mellifera ; Stylosanthes capitata ; canopy ; carbon dioxide ; environment ; flowers ; forage ; insects ; legumes ; outcrossing ; phenology ; plant reproduction ; seed set ; temperature ; tropical plants
    Language English
    Dates of publication 2021-0510
    Publishing place Elsevier B.V.
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2020.144899
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 74/341: Show issues

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  4. Article ; Online: Exploring integument transcriptomes, cuticle ultrastructure, and cuticular hydrocarbons profiles in eusocial and solitary bee species displaying heterochronic adult cuticle maturation.

    Falcon, Tiago / Pinheiro, Daniel G / Ferreira-Caliman, Maria Juliana / Turatti, Izabel C C / Abreu, Fabiano C Pinto de / Galaschi-Teixeira, Juliana S / Martins, Juliana R / Elias-Neto, Moysés / Soares, Michelle P M / Laure, Marcela B / Figueiredo, Vera L C / Lopes, Norberto Peporine / Simões, Zilá L P / Garófalo, Carlos A / Bitondi, Márcia M G

    PloS one

    2019  Volume 14, Issue 3, Page(s) e0213796

    Abstract: Differences in the timing of exoskeleton melanization and sclerotization are evident when comparing eusocial and solitary bees. This cuticular maturation heterochrony may be associated with life style, considering that eusocial bees remain protected ... ...

    Abstract Differences in the timing of exoskeleton melanization and sclerotization are evident when comparing eusocial and solitary bees. This cuticular maturation heterochrony may be associated with life style, considering that eusocial bees remain protected inside the nest for many days after emergence, while the solitary bees immediately start outside activities. To address this issue, we characterized gene expression using large-scale RNA sequencing (RNA-seq), and quantified cuticular hydrocarbon (CHC) through gas chromatography-mass spectrometry in comparative studies of the integument (cuticle plus its underlying epidermis) of two eusocial and a solitary bee species. In addition, we used transmission electron microscopy (TEM) for studying the developing cuticle of these and other three bee species also differing in life style. We found 13,200, 55,209 and 30,161 transcript types in the integument of the eusocial Apis mellifera and Frieseomelitta varia, and the solitary Centris analis, respectively. In general, structural cuticle proteins and chitin-related genes were upregulated in pharate-adults and newly-emerged bees whereas transcripts for odorant binding proteins, cytochrome P450 and antioxidant proteins were overrepresented in foragers. Consistent with our hypothesis, a distance correlation analysis based on the differentially expressed genes suggested delayed cuticle maturation in A. mellifera in comparison to the solitary bee. However, this was not confirmed in the comparison with F. varia. The expression profiles of 27 of 119 genes displaying functional attributes related to cuticle formation/differentiation were positively correlated between A. mellifera and F. varia, and negatively or non-correlated with C. analis, suggesting roles in cuticular maturation heterochrony. However, we also found transcript profiles positively correlated between each one of the eusocial species and C. analis. Gene co-expression networks greatly differed between the bee species, but we identified common gene interactions exclusively between the eusocial species. Except for F. varia, the TEM analysis is consistent with cuticle development timing adapted to the social or solitary life style. In support to our hypothesis, the absolute quantities of n-alkanes and unsaturated CHCs were significantly higher in foragers than in the earlier developmental phases of the eusocial bees, but did not discriminate newly-emerged from foragers in C. analis. By highlighting differences in integument gene expression, cuticle ultrastructure, and CHC profiles between eusocial and solitary bees, our data provided insights into the process of heterochronic cuticle maturation associated to the way of life.
    MeSH term(s) Animals ; Bees/genetics ; Bees/growth & development ; Epidermis/metabolism ; Epidermis/ultrastructure ; Female ; Hydrocarbons/analysis ; Insect Proteins/genetics ; Integumentary System/physiology ; Metamorphosis, Biological ; Transcriptome
    Chemical Substances Hydrocarbons ; Insect Proteins
    Language English
    Publishing date 2019-03-14
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0213796
    Database MEDical Literature Analysis and Retrieval System OnLINE

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