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  1. Article: Experimental field test of the influence of generalist stingless bees (Meliponini) on the topology of a bee–flower mutualistic network in the tropics

    Gruchowski‐Woitowicz, Franciélli Cristiane / da Silva, Cláudia Inês / Ramalho, Mauro

    Ecological entomology. 2020 Aug., v. 45, no. 4

    2020  

    Abstract: 1. Generalists are assumed to play a key role in structuring and stabilising animal–plant mutualistic networks. Until now, analyses on the effects of generalists have been based on empirical field data or simulations. The present natural field experiment ...

    Abstract 1. Generalists are assumed to play a key role in structuring and stabilising animal–plant mutualistic networks. Until now, analyses on the effects of generalists have been based on empirical field data or simulations. The present natural field experiment manipulated the abundance of a generalist and abundant stingless bee [Melipona (Eomelipona) marginata] to determine the effects on the mutualistic network. 2. Networks were generated, and associated metrics were used for comparing replicate plots with and without the insertion of stingless bee nests. 3. Unweighted metrics and the basic qualitative structural pattern of networks (high nestedness, very low modularity and specialisation) was not affected by experimental variation in stingless bee abundance because they exert strong basal effects on the plant–pollinator community under natural conditions of abundance. Still, increased abundance caused significant variation in weighted nestedness and modularity and community‐level specialisation. 4. Supporting predictions of neutral models, increased abundance of the stingless bee led to an increase in most of its specific metrics, expressing the expansion of its realised trophic niche. 5. During this process, specialist and other generalist bees were affected in different ways. More plant species became even more dependent on this stingless bee (increased asymmetry). 6. Long‐term effects could not be inferred directly from instantaneous values of network metrics. Nonetheless, the increased abundance of the generalist stingless bee may both reduce the local level of ecological specialisation in the short term and affect the spatial distribution of less abundant and/or specialist bee species and plants in the long term.
    Keywords Melipona ; asymmetry ; entomology ; field experimentation ; nestedness ; stingless bees ; topology
    Language English
    Dates of publication 2020-08
    Size p. 854-866.
    Publishing place Blackwell Publishing Ltd
    Document type Article
    Note NAL-AP-2-clean ; JOURNAL ARTICLE
    ZDB-ID 196048-9
    ISSN 0307-6946
    ISSN 0307-6946
    DOI 10.1111/een.12862
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: A Revision of Conchocarpus with Pantocolporate Pollen Grains: The Almeidea Group (Galipeinae, Rutaceae)

    Bruniera, Carla Poleselli / Kallunki, Jacquelyn A. / Silva, Inês Machline / da Silva, Cláudia Inês / Groppo, Milton

    Systematic botany. 2021 Aug. 11, v. 46, no. 2

    2021  

    Abstract: Conchocarpus is the largest genus of Galipeinae (tribe Galipeeae), which is the most diverse group of Neotropical Rutaceae, with ca. 50 species. Recent phylogenetic analyses support a recircumscription of Conchocarpus to accommodate the species of ... ...

    Abstract Conchocarpus is the largest genus of Galipeinae (tribe Galipeeae), which is the most diverse group of Neotropical Rutaceae, with ca. 50 species. Recent phylogenetic analyses support a recircumscription of Conchocarpus to accommodate the species of Almeidea, a taxon from the Brazilian Atlantic Rainforest and Bolivia whose synapomorphy is the possession of pantocolporate pollen grains. Four species are recognized here: C. albiflorus, C. coeruleus, C. hendrixii, and C. ruber. A taxonomic revision of this group of four species of Conchocarpus is provided, with updates of their nomenclature, morphology, circumscription, geographic distribution, and preliminary conservation status, as well as a key to the species and illustrations. Conchocarpus limae and C. lilacinus are consigned to the synonymy of C. ruber.
    Keywords Neotropics ; Rutaceae ; conservation status ; geographical distribution ; pollen ; rain forests ; synapomorphy ; taxonomic keys ; taxonomic revisions ; Bolivia
    Language English
    Dates of publication 2021-0811
    Size p. 375-388.
    Publishing place American Society of Plant Toxonomists
    Document type Article
    ZDB-ID 2052625-8
    ISSN 1548-2324 ; 0363-6445
    ISSN (online) 1548-2324
    ISSN 0363-6445
    DOI 10.1600/036364421X16231782047361
    Database NAL-Catalogue (AGRICOLA)

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  3. Article: Nesting biology of Centris (Paracentris) xanthomelaena (Hymenoptera:Apidae: Centridini)

    Martins, Herbeson Ovidio de Jesus / de Oliveira-Rebouças, Patricia Luiza / Aguiar, Cándida Maria Lima / da Silva, Cláudia Inês / Ferreira, Vinina Silva

    Canadian journal of plant pathology

    2023  Volume 45, Issue 2, Page(s) 222

    Document type Article
    ZDB-ID 763044-X
    ISSN 0706-0661 ; 1715-2992
    Database Current Contents Nutrition, Environment, Agriculture

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  4. Article: Versatility of the trophic niche of Centris (Paracentris) burgdorfi (Apidae, Centridini)

    Sabino, William O / Alves-dos-Santos, Isabel / da Silva, Cláudia Inês

    Arthropod-plant interactions. 2019 Apr., v. 13, no. 2

    2019  

    Abstract: Centris species collect floral oil and use this resource in larval food and for waterproofing their cells. We investigated the trophic niche of three distinct populations of Centris burgdorfi, a widely distributed bee in Brazil, by using pollen collected ...

    Abstract Centris species collect floral oil and use this resource in larval food and for waterproofing their cells. We investigated the trophic niche of three distinct populations of Centris burgdorfi, a widely distributed bee in Brazil, by using pollen collected from female bees. Our goal was to determine whether there is versatility regarding sources of oil, nectar, and pollen in different regions of Brazil. By using the pollen, we also determined whether the source of oil used corresponded to the collection apparatus of the females. In total, we sampled 150 C. burgdorfi females and their associated pollen in three distinct habitat types across Brazil. We prepared pollen by acetolysis and performed quantitative analysis on 400 grains per bee. We identified 41 plant species belonging to 18 families that were used by C. burgdorfi. Although none of the plant species used by C. burgdorfi were shared among areas, the Chamaecrista genus was present in the diet at all three sites. The probable oil source came from plants of the genus Krameria, a genus with epithelial elaiophores. In regions where the Krameriaceae family was not present (e.g., southern Brazil), bees used Angelonia integerrima, a plant with trichomate elaiophores, demonstrating that C. burgdorfis exhibited versatility in its dietary breadth among the studied regions. C. burgdorfi proved to be locally specialized in oil floral source and selectivity in pollen sources, but a generalist when evaluated the wide geographic distribution.
    Keywords acetolysis ; Angelonia ; Apidae ; bees ; Centris ; Chamaecrista ; diet ; epithelium ; females ; geographical distribution ; habitats ; Krameria ; larvae ; nectar ; oils ; pollen ; quantitative analysis ; Brazil
    Language English
    Dates of publication 2019-04
    Size p. 227-237.
    Publishing place Springer Netherlands
    Document type Article
    ZDB-ID 2377469-1
    ISSN 1872-8847 ; 1872-8855
    ISSN (online) 1872-8847
    ISSN 1872-8855
    DOI 10.1007/s11829-018-9654-5
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Overlap of Ecological Niche Breadth of Euglossa cordata and Eulaema nigrita (Hymenoptera, Apidae, Euglossini) Accessed by Pollen Loads and Species Distribution Modeling.

    Miranda, Elder Assis / Lima, Irailde do Nascimento / Oi, Cíntia A / López-Uribe, Margarita M / Del Lama, Marco Antonio / Freitas, Breno Magalhães / Silva, Cláudia Inês

    Neotropical entomology

    2021  Volume 50, Issue 2, Page(s) 197–207

    Abstract: Urban areas can serve as biodiversity refuges for pollinators because of the high diversity of available floral and nesting resources. However, it remains unclear what plant species commonly used for urban landscaping provide floral resources that ... ...

    Abstract Urban areas can serve as biodiversity refuges for pollinators because of the high diversity of available floral and nesting resources. However, it remains unclear what plant species commonly used for urban landscaping provide floral resources that pollinators actively use. Here, we integrate data from the pollen and species distribution models of two abundant euglossine bees-the large-bodied Eulaema nigrita (Lepeletier, 1841) and the small-bodied Euglossa cordata (Linnaeus, 1758)-in urban areas to investigate their overlap in diet breadth and distribution. We hypothesized that because bees with larger body sizes tend to have larger foraging areas, large-bodied bees would have a wider diet breath than small-bodied bees. Contrary to our hypothesis, we found that Eg. cordata has a wider diet breadth than El. nigrita with the former species showing higher diversity of pollen types collected (per pollen load and on average across pollen loads). Pollen grains from Solanum paniculatum and Tradescantia zebrina represented 63% of the diet of Eg. cordata, whereas pollen from S. paniculatum and Psidium guajava represented 87% of the diet of El. nigrita. After overlaying the distribution of both bee species and the three most important pollen resources, the distribution models revealed that these three plant species can co-occur with both euglossine bees throughout a large portion of eastern Brazil near the coast. Thus, we conclude S. paniculatum, T. zebrina, and P. guajava should be considered key plants for the maintenance of these two urban euglossine bee species. The results of this study provide important information for urban landscaping programs that aim to protect and preserve pollinators.
    MeSH term(s) Animals ; Bees ; Biodiversity ; Brazil ; Ecosystem ; Pollen
    Language English
    Publishing date 2021-03-08
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2105363-7
    ISSN 1678-8052 ; 1519-566X
    ISSN (online) 1678-8052
    ISSN 1519-566X
    DOI 10.1007/s13744-020-00847-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Overlap of Ecological Niche Breadth of Euglossa cordata and Eulaema nigrita (Hymenoptera, Apidae, Euglossini) Accessed by Pollen Loads and Species Distribution Modeling

    Miranda, Elder Assis / Lima, Irailde do Nascimento / Oi, Cíntia A / López-Uribe, Margarita M / Del Lama, Marco Antonio / Freitas, Breno Magalhães / Silva, Cláudia Inês

    Neotropical entomology. 2021 Apr., v. 50, no. 2

    2021  

    Abstract: Urban areas can serve as biodiversity refuges for pollinators because of the high diversity of available floral and nesting resources. However, it remains unclear what plant species commonly used for urban landscaping provide floral resources that ... ...

    Abstract Urban areas can serve as biodiversity refuges for pollinators because of the high diversity of available floral and nesting resources. However, it remains unclear what plant species commonly used for urban landscaping provide floral resources that pollinators actively use. Here, we integrate data from the pollen and species distribution models of two abundant euglossine bees—the large-bodied Eulaema nigrita (Lepeletier, 1841) and the small-bodied Euglossa cordata (Linnaeus, 1758)—in urban areas to investigate their overlap in diet breadth and distribution. We hypothesized that because bees with larger body sizes tend to have larger foraging areas, large-bodied bees would have a wider diet breath than small-bodied bees. Contrary to our hypothesis, we found that Eg. cordata has a wider diet breadth than El. nigrita with the former species showing higher diversity of pollen types collected (per pollen load and on average across pollen loads). Pollen grains from Solanum paniculatum and Tradescantia zebrina represented 63% of the diet of Eg. cordata, whereas pollen from S. paniculatum and Psidium guajava represented 87% of the diet of El. nigrita. After overlaying the distribution of both bee species and the three most important pollen resources, the distribution models revealed that these three plant species can co-occur with both euglossine bees throughout a large portion of eastern Brazil near the coast. Thus, we conclude S. paniculatum, T. zebrina, and P. guajava should be considered key plants for the maintenance of these two urban euglossine bee species. The results of this study provide important information for urban landscaping programs that aim to protect and preserve pollinators.
    Keywords Euglossa ; Eulaema ; Neotropics ; Psidium guajava ; Solanum paniculatum ; Tradescantia zebrina ; bees ; biodiversity ; coasts ; diet ; entomology ; foraging ; geographical distribution ; niches ; pollen ; pollen loads ; Brazil
    Language English
    Dates of publication 2021-04
    Size p. 197-207.
    Publishing place Springer US
    Document type Article
    Note NAL-light
    ZDB-ID 2105363-7
    ISSN 1678-8052 ; 1519-566X
    ISSN (online) 1678-8052
    ISSN 1519-566X
    DOI 10.1007/s13744-020-00847-x
    Database NAL-Catalogue (AGRICOLA)

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  7. Article: Seasonal and vertical distribution of floral resources and its implications for the conservation of pollinators

    Silva, Cláudia Inês da / Filho, Alípio José de Souza Pacheco / Toppa, Rogério Hartung / Arena, Mariana Victorino Nicolosi / Oliveira, Paulo Eugênio de

    Flora. 2021 May, v. 278

    2021  

    Abstract: The diversity of plant species in blooming throughout the year is a way of ensuring the presence of floral resources, as the spatiotemporal distribution of these resources assists in the movement of pollinators and guarantees local ecosystem services. ... ...

    Abstract The diversity of plant species in blooming throughout the year is a way of ensuring the presence of floral resources, as the spatiotemporal distribution of these resources assists in the movement of pollinators and guarantees local ecosystem services. The aim of this study was to describe the seasonal variations in the vertical distribution of the floral resources that keep the pollinators in Cerrado areas, the savanna region in Central Brazil, a biodiversity hotspot that depends more than 80% on bees for pollination. We studied four cerrado stricto sensu areas and evaluated monthly the flowering phenology, taking into account the number of individuals for each plant species blooming in all vertical strata (arboreal, shrubby, herbaceous, and lianas) and main floral resources (nectar, pollen, and floral oil). We evaluated the annual distribution of flowering plant species and individuals, and the availability of floral resources. We found a seasonal flowering pattern for the whole cerrado stricto sensu, with differences between areas, strata and floral resources types. The floral resources varied idiosyncratically among the strata over time, suggesting complementary blooming patterns throughout the year. The shrubby, herbaceous and liana species were key determinants in the availability of floral resources through the seasons. Our results reinforce the importance of including all the strata in plant surveys, as well as highlight the importance of the vertical stratification in the Cerrado plant formations as a source of floral resources during the time in which there are fewer resources available for pollinators in surrounding forest areas.
    Keywords biodiversity ; cerrado ; ecosystems ; flora ; forests ; nectar ; oils ; phenology ; pollen ; pollination ; savannas ; spatial distribution ; Brazil
    Language English
    Dates of publication 2021-05
    Publishing place Elsevier GmbH
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 5580-3
    ISSN 0367-2530 ; 0373-6490
    ISSN 0367-2530 ; 0373-6490
    DOI 10.1016/j.flora.2021.151787
    Database NAL-Catalogue (AGRICOLA)

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  8. Article ; Online: Nocturnal floral scent profiles of Myrtaceae fruit crops.

    Cordeiro, Guaraci Duran / Fernandes Dos Santos, Isabelle Guimarães / Silva, Claudia Inês da / Schlindwein, Clemens / Alves-Dos-Santos, Isabel / Dötterl, Stefan

    Phytochemistry

    2019  Volume 162, Page(s) 193–198

    Abstract: Communication between plants and nocturnal pollinators in low light conditions is mainly guided by floral scents, which is well documented for plants pollinated by bats, moths, and beetles. Just recently, nocturnal bees have been added to the list of ... ...

    Abstract Communication between plants and nocturnal pollinators in low light conditions is mainly guided by floral scents, which is well documented for plants pollinated by bats, moths, and beetles. Just recently, nocturnal bees have been added to the list of pollinators known to respond to floral scents of their host plants. Little is known about the floral scent chemistry of plants visited and pollinated by nocturnal bees. Among these plants are economically important fruit crops of the family Myrtaceae. We aimed to analyze the nocturnal floral scent profiles of 10 species of Myrtaceae (only diurnal P. cattleianum was sampled after sunrise) and address the following questions: i) What are the main floral scent compounds emitted by the species? ii) Are the floral scent profiles similar to those described for other species pollinated by nocturnal bees? Floral scents were collected by dynamic headspace and analyzed by GC-MS (gas chromatography - mass spectrometry). The total amount of scent trapped ranged from 74 ng/flower/hour for Syzygium malaccense to 7556 ng/flower/hour for Eugenia dysenterica. A total of 46 floral scent compounds were detected in the samples with the most abundant compounds being the aromatics benzaldehyde, benzyl alcohol, 2-phenylethanol, methyl salicylate, 2-phenylethyl acetate, and benzyl acetate; the aliphatic compound 1-octanol; and the monoterpene linalool. The different species exhibited different relative scent patterns. Overall, the nocturnal scents of the studied species of Myrtaceae are dominated by aromatic compounds, which is in contrast to the scent profiles described for other plants pollinated by nocturnal bees.
    MeSH term(s) Flowers/chemistry ; Fruit/growth & development ; Myrtaceae/chemistry ; Myrtaceae/growth & development ; Odorants/analysis ; Time Factors
    Language English
    Publishing date 2019-03-30
    Publishing country England
    Document type Journal Article
    ZDB-ID 208884-8
    ISSN 1873-3700 ; 0031-9422
    ISSN (online) 1873-3700
    ISSN 0031-9422
    DOI 10.1016/j.phytochem.2019.03.011
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: High prevalence of Miconia chamissois (Melastomataceae) pollen in brood cell provisions of the orchid bee Euglossa townsendi in São Paulo State, Brazil

    da Silva, CláudiaInês / Maurício Meirelles do Nascimento Castro / Isabel Alves dos Santos / Carlos Alberto Garófalo

    Apidologie. 2016 Nov., v. 47, no. 6

    2016  

    Abstract: Females of bee species can present a temporal specialized behavior in the food collection for their offspring. We studied the food of Euglossa townsendi immatures from nests established in trap-nests disposed in a hygrophilous forest in Brazil, between ... ...

    Abstract Females of bee species can present a temporal specialized behavior in the food collection for their offspring. We studied the food of Euglossa townsendi immatures from nests established in trap-nests disposed in a hygrophilous forest in Brazil, between March 2010 and February 2012. The pollinic material remaining in the brood cells were acetolysed and identified by comparison with the pollen of plants that bloomed in the area during the study period. We identified 21 plant species belonging to 14 families in the provision. However, the results indicated that immature of Eg. townsendi feed preferentially on pollen of Miconia chamissois (Melastomataceae) found in 100 % of the samples. Except for two nests, there was a similarity above 85 % in the composition of the supply plants of the brood. We also found a high similarity between the pollinic contents of the cells of each nest. Our results suggest a temporal preference on M. chamissois.
    Keywords Euglossa ; Miconia ; bees ; brood cells ; females ; forests ; immatures ; pollen ; progeny ; Brazil
    Language English
    Dates of publication 2016-11
    Size p. 855-866.
    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/s13592-016-0441-y
    Database NAL-Catalogue (AGRICOLA)

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  10. Article ; Online: Osmophores of Caryocar brasiliense (Caryocaraceae): a particular structure of the androecium that releases an unusual scent.

    Paiva, Elder Antônio Sousa / Dötterl, Stefan / De-Paula, Orlando Cavalari / Schlindwein, Clemens / Souto, Letícia Silva / Vitarelli, Narah Costa / da Silva, Claudia Inês / Mateus, Sidnei / Alves-Dos-Santos, Isabel / Oliveira, Denise Maria Trombert

    Protoplasma

    2019  Volume 256, Issue 4, Page(s) 971–981

    Abstract: Caryocar brasiliense is a flagship species of the Brazilian Cerrado. It produces flowers with a strong peculiar scent, which are pollinated by bats and occasionally moths with short mouthparts. However, the cues responsible for attracting these nocturnal ...

    Abstract Caryocar brasiliense is a flagship species of the Brazilian Cerrado. It produces flowers with a strong peculiar scent, which are pollinated by bats and occasionally moths with short mouthparts. However, the cues responsible for attracting these nocturnal pollinators remain unknown. We aimed to identify osmophores of C. brasiliense, describe the ultrastructure of the cells involved in the synthesis and release of floral odour, and identify the constituents of the floral bouquet. We performed field observations and histochemical and ultrastructural analyses of flowers focusing on the androecium. Gas chromatography-mass spectrometry was used to analyse the scents emitted. Filament epidermal cells were found to possess an unusual shape and be responsible for the main production and release of odour. These cells, called foraminous cells, are elongate and possess pores where their cell walls are abruptly thin. The cuticle is practically absent over the pores, which facilitates odour emission. The foraminous cells have conspicuous nuclei and organelle-rich cytoplasm where oil droplets can be seen prior to anthesis. The features of these cells remain similar during anthesis, but many vesicles fuse with the plasma membrane and the number of oil droplets in the cytosol decreases. Twenty-nine components were found in the scent, especially fatty acid derivatives and N- and S-bearing compounds. Our analyses revealed that the androecium of C. brasiliense has a particular structure that acts as an osmophore. The scent from the androecium resembles that of the entire flower, which is an unprecedented finding for a plant with single flowers as the pollination unit.
    MeSH term(s) Ericales/physiology ; Ericales/ultrastructure ; Flowers/chemistry ; Flowers/cytology ; Flowers/physiology ; Flowers/ultrastructure ; Gas Chromatography-Mass Spectrometry ; Humans ; Odorants/analysis ; Plant Cells/physiology ; Plant Cells/ultrastructure ; Pollination ; Volatile Organic Compounds/analysis ; Volatile Organic Compounds/chemistry
    Chemical Substances Volatile Organic Compounds
    Language English
    Publishing date 2019-02-22
    Publishing country Austria
    Document type Journal Article
    ZDB-ID 123809-7
    ISSN 1615-6102 ; 0033-183X
    ISSN (online) 1615-6102
    ISSN 0033-183X
    DOI 10.1007/s00709-019-01356-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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