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| Registros recuperados: 121 | |
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| Maimoni-Rodella,R.C.S.; Yanagizawa,Y.A.N.P.. |
| The floral biology of three weeds, Ipomoea cairica, I. grandifolia and I. nil (Convolvulaceae), was studied in Botucatu and Jaboticabal, São Paulo, in southeastern Brazil. The three species are melittophilous, with a varied set of floral visitors, but with some overlapping. Cluster analysis using Jacquard similarity index indicated a greater similarity among different plant species in the same locality than among the populations at different places, in relation to floral visitor sets. The promiscuous and opportunistic features of the flowers were shown, with such type of adaptation to pollination being advantageous to weeds since pollinator availability is unpredictable at ruderal environments. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pollination; Bees; Morning-glory. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582007000100004 |
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| Barbola,Ivana de Freitas; Laroca,Sebastião; Almeida,Maria Christina de; Nascimento,Elynton Alves do. |
| This study describes the reproductive system of Stachytarpheta maximiliani (Verbenaceae), including its floral biology, nectar and pollen availability and insect foraging patterns, identifying whose species act as pollinators. It was carried out in a Brazilian Atlantic rain forest site. Observations on the pollination biology of the Verbenaceae S. maximiliani indicate that their flowering period extends from September through May. Anthesis occurs from 5:30 a.m. to 5:00 p.m. and nectar and pollen are available during all the anthesis. Many species of beetles, hemipterans, flies, wasps, bees and butterflies visit their flowers, but bees and butterflies are the most frequent visitors. The flowers are generally small, gathered in dense showy inflorescences. A... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apoidea; Floral ecology; Lepidoptera; Pollination. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262006000400010 |
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| Guollo, Karina; Wagner Junior, Américo; Kosera Neto, Carlos; Dallago, Adriana; Svidzinski, Rayana Stival; Radaelli, Juliana Cristina. |
| Studies related to floral biology are essential for the understanding of the ecological relations between different species, and the beginning of breeding programs. In this way, the aim of the study was to elucidate aspects of floral and reproductive biology and floral visitors of this species. Information about floral morphology and morphometry, anthesis, nectaries and pollinator attractive structures, characterization of floral visitors, receptivity of androcytic stigma and maturation, in vitro pollen storage and germination, and characterization of the reproductive system were obtained. The guabiju tree has hermaphrodite flowers, and the floral opening occurs mainly during the night, but also in the morning. Anthers are the main attractive structure to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.03.00.00-0 guabiju tree; Myrtaceae; Floral visitors; Pollination; Germination of pollen. Morfologia; Fisiologia; Botânica. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/43904 |
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| Yanagizawa,Yuriko A. N. Pinto; Maimoni-Rodella,Rita de Cassia Sindrônia. |
| In order to evaluate the pollination strategies of Bignoniaceae, the floral biology and the floral visitors in five species, three cerrado shrubs (Arrabidaea brachypoda (DC.) Bor., Jacaranda decurrens Cham., and Jacaranda oxyphylla Cham.), and two lianas from the border of a semideciduous seasonal forest (Arrabidaea samydoides (Cham.) Sandw., and Arrabidaea triplinervia H. Baill.) were studied in Botucatu, São Paulo State, Southeastern Brazil. The flowering periods were partially overlapping, especially between species in the same habitat. All the five species were functionally allogamous, melittophilous, nototribic and mainly pollinated by long tongued large bees. Some medium-sized and small pollen-foraging bees were occasional legitimate visitors,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arrabidaea; Jacaranda; Melittophilly; Pollination; Breeding system. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000700015 |
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| LANDER,TONYA A; HARRIS,STEPHEN A; BOSHIER,DAVID H. |
| This study was undertaken to discover whether patterns of flower and fruit production for Gomortega keule, an endangered Chilean tree, differ between exotic pine plantation, agricultural and native forest environments. A pilot study was also undertaken to identify the primary pollinators of G. keule. Although similar proportions of G. keule trees flowered in the agricultural and native forest áreas, more trees in the agricultural sites produced fruit compared to trees in the native forest sites. Flowering and fruiting of G. keule was extremely rare in the exotic pine plantations. Our data show that G. keule flowers are predominantly visited by syrphid flies in March-April, and that syrphids carry a greater proportion of G. keule pollen than the other... |
| Tipo: Journal article |
Palavras-chave: Chile; Gomortega; Landuse; Pollination; Syrphid. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2009000300007 |
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| Mendonça,Luciana B.; Anjos,Luiz dos. |
| We investigated flower morphology, nectar features, and hummingbird visitation to Palicourea crocea (Rubiaceae), a common ornithophilous shrub found in the riparian forest understory in the Upper Paraná River floodplain, Brazil. Flowers are distylous and the style-stamen dimorphism is accompanied by other intermorph dimorphisms in corolla length, anther length, and stigma lobe length and form. We did not observe strict reciprocity in the positioning of stigma and anthers between floral morphs. Flowering occurred during the rainy season, October to December. Nectar standing crop per flowerwas relatively constant throughout the day, which apparently resulted in hummingbirds visiting the plant throughout the day. Energetic content of the nectar in each flower... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bird-plant interactions; Heterostyly; Pollination; Brazilian Atlantic forest; Riparian vegetation; Conservation. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000100006 |
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| OLIVEIRA,Fabiana dos Santos; RIBEIRO,Monique Hellen Martins; NUNEZ,Cecilia Veronica; ALBUQUERQUE,Patricia Maia Correia de. |
| ABSTRACT Mouriri guianensis is a Brazilian endemic plant species distributed throughout the Amazon forest, Caatinga, Mata Atlântica and Cerrado domains, extending northward into Venezuela. The aim of this study was to describe the flowering phenology, floral biology and visitors associated with M. guianensis, highlighting the crepuscular bee species Megalopta amoena. Mouriri guianensis flowers from September to March. The flowering, the details of floral biology and the activities of floral visitors were observed for ten individual plants in December 2013, January-March 2014, September-December 2014 and January-March 2015. The flowering peaks occurred in December 2013 and in November-December 2014. Bees were collected in January and February 2015. A total... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pollination; Insect-plant interaction; Floral oil; Crepuscular foraging. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000300281 |
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| Romero,Gustavo Q; Vasconcelos Neto,João. |
| and glades. This species blooms throughout the year, attracting arthropods of various guilds, including herbivores, pollinators and predators. In this study, done over a two year period, we described the phenology of T. adenantha and assessed the seasonal variation in arthropod numbers of different guilds. We also determined the periods of lowest and highest seed set. T. adenantha population showed a peak in flowering in March-April (rainy season) with greater production of achenes in December-April. April and October had respectively highest and lowest number of fertilized, undamaged ovules, and this pattern is possibly related with population dynamics of pollinators and herbivores. In August, which was the period of greatest damage to the stigma (by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal-plant interactions; Floral herbivory; Pollination; Population dynamics; Pre-dispersal seed predation. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042005000100014 |
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| Barbosa-Filho,Waldemar Guimarães; Araujo,Andréa Cardoso de. |
| Hummingbirds are the main vertebrate pollinators in the Neotropics, but little is known about the interactions between hummingbirds and flowers in areas of Cerrado. This paper aims to describe the interactions between flowering plants (ornithophilous and non-ornithophilous species) and hummingbirds in an urban Cerrado remnant. For this purpose, we investigated which plant species are visited by hummingbirds, which hummingbird species occur in the area, their visiting frequency and behavior, their role as legitimate or illegitimate visitors, as well as the number of agonistic interactions among these visitors. Sampling was conducted throughout 18 months along a track located in an urban fragment of Cerrado vegetation in Campo Grande, Mato Grosso do Sul,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agonistic behavior; Fragmentation; Ornithophily; Pollination. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400021 |
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| Bizotto,Lucas de Almeida; Santos,Regis Sivori Silva dos; Boff,Mari Ines Carissimi. |
| Abstract: The objective of this work was to evaluate the variations in the stored food resources and in the number of immature bees in Apis mellifera hives used for apple (Malus domestica) pollination. The study was conducted in the municipality of Vacaria, in the state of Rio Grande do Sul, Brazil, with 40 hives, over two consecutive harvests. The evaluations were done in the hive brood frames before, during, and 45 days after a pollination period, by interpreting photographic field records. Before being transported to the orchards, the bees foraged primarily in areas with native forest or canola (Brassica napus) crop, in 2014/2015, and with native forest or eucalyptus (Eucalyptus sp.) reforestation, in 2015/2016. In both harvests, the percentage of food... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica napus; Eucalyptus; Malus domestica; Floral resource; Pollination. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000400399 |
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| COLLEVATTI,R. G.; SCHOEREDER,J. H.; CAMPOS,L. A. O.. |
| We studied flight distance and directionality of bee pollinators on the tropical shrub weed Triumfetta semitriloba Jacq. (Tiliaceae), addressing (1) within- and between-plant movement pattern; (2) distances flown between plants; (3) flight directionality. Flowering plants were distributed in well-delimited clumps, in each of two pasture areas (A1 and A2) and one area of forest gap (A3), in Viçosa, southeastern Brazil. Five solitary bee species, Augochlorella michaelis, Augochloropsis cupreola, Pseudocentron paulistana, Ceratinula sp., Melissodes sexcincta, and two social bee, Plebeia droryana, P. cf. nigriceps were observed. All species moved mainly to the nearest flower on the same individual plant and, in between-plant movements, to the first or second... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Foraging behaviour; Directionality; Pollination; Flight distance; Solitary bees. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000100005 |
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| Cane, James H; USDA-ARS; jcane@biology.usu.edu. |
| Few studies directly address the consequences of habitat fragmentation for communities of pollinating insects, particularly for the key pollinator group, bees (Hymenoptera: Apiformes). Bees typically live in habitats where nesting substrates and bloom are patchily distributed and spatially dissociated. Bee studies have all defined habitat fragments as remnant patches of floral hosts or forests, overlooking the nesting needs of bees. Several authors conclude that habitat fragmentation is broadly deleterious, but their own data show that some native species proliferate in sampled fragments. Other studies report greater densities and comparable diversities of native bees at flowers in some fragment size classes relative to undisrupted habitats, but find... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Apoidea; Bees; Conservation; Diversity; Habitat fragmentation; Land-use change; Pollination; Pollinator; Statistics; Taxonomy. |
| Ano: 2001 |
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| Nicodemo,Daniel; Couto,Regina Helena Nogueira; Malheiros,Euclides Braga; De Jong,David. |
| The production of fruits and seeds of many crops is increased when bees visit their flowers pollinating them. The aim of this research was to study the pollination of pumpkins (Cucurbita maxima Duch. var. Exposição), to determine the diversity of insects visiting its flowers, the time and type of provision obtained and the effect of the visits on fruit set, fruit size and weight, and number of seeds. Apis mellifera L. accounted for 73.4% of the visits made by bees, collecting pollen during 34.5 s per flower and nectar in 43.9 s and 29.3 s from female and male flowers, respectively. Trigona spinipes (Fabr.) collected only nectar, during a mean time of 60.5 s per flower, and represented 26.6% of the visits by bees. Diabrotica speciosa (Germ.) only fed on the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cucurbita maxima; Pollination; Honey bee. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000400007 |
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| Registros recuperados: 121 | |
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