|
|
|
| Registros recuperados: 24 | |
|
|
| Fernandes,Nayanny de Sousa; Pinto,Gercy Soares; Zocolo,Guilherme Julião; Aragão,Fernando Antonio Souza de; Freitas,Breno Magalhães. |
| ABSTRACT We investigated the foraging pattern of A. mellifera in five commercial types of melon (Yellow, Cantaloupe, Charentais, Galia and Piel de Sapo) grown side by side. We also observed if this bee species can discriminate between flowers of the five melon types and if it shows preference for flowers of any of them. Results showed that the bees visit flowers of all types of melon throughout the day collecting pollen and nectar in similar foraging patterns. However, they visited significantly more flowers of the Cantaloupe type followed by the types Piel de Sapo and Yellow, while the melons type Galia and Charentais were the least visited by the bees. This behavior has implications for the use of A. mellifera for melon pollination, requiring that the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cantaloupe; Bee visits; Foraging behavior; Flower preference; Melon pollination. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000200409 |
| |
|
| |
|
| |
|
|
| Laufer,Gabriel; Arim,Matías; Loureiro,Marcelo; Piñeiro-Guerra,Juan Manuel; Clavijo-Baquet,Sabrina; Fagúndez,César. |
| We examined the diet of 4 annual fishes, Austrolebias viarius, Austrolebias cheradophilus, Austrolebias luteoflammulatus and Cynopoecilus melanotaenia inhabiting temporal ponds of southeastern Uruguay, by analysis of stomach contents. Fishes were captured from fifty ephemeral ponds of Castillos Lagoon basin, in the region of the Humedales del Este. We identified 13099 individual prey items extracted from 669 stomachs of the four captured species. In the studied system, annual killifishes represents the most abundant and conspicuous top predators. Killifishes are generalist key predators at the ephemeral ponds of the studied system, consuming mostly aquatic items. Zooplancton represented the bulk of the diet in the four analyzed species, followed by eggs,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Annual fishes; Foraging behavior; Predators; Food analysis. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000100010 |
| |
|
| |
|
|
| Bost, Charles-andré; Zorn, T; Le Maho, Yvon; Duhamel, Guy. |
| The diving behavior and diet composition of King penguins were examined during summer 1995 at Kerguelen Islands. This was in relation to real-time estimations of diel prey availability during 2 sampling sessions totaling 10 d at sea. During daylight hours King penguins performed medium to deep dives of 120-250 m. At night, they dived no deeper than 60 m. Daytime, dusk and night-time sampling of prey was performed in the depth ranges corresponding to the depths of the penguins' dives in this study. The diversity in mesopelagic fish was found to be highest during the night at 0-50 m (15 vs 9 species during the day), and their number was up to 20-fold higher at these depths at night than during the day at the 150-250 m depth layer. The 3 myctophid species... |
| Tipo: Text |
Palavras-chave: King penguins; Diet; Diel vertical migration; Myctophids; Foraging behavior. |
| Ano: 2002 |
URL: https://archimer.ifremer.fr/doc/00247/35842/34355.pdf |
| |
|
| |
|
| |
|
|
| Passos,Fernando de Camargo; Keuroghlian,Alexine. |
| Foraging in the Black Lion Tamarin (L. chrysopygus Mikan, 1823) was observed in the Caetetus Ecological Station, São Paulo, southeastern Brazil, during 83 days between November 1988 to October 1990. These tamarins use manipulative, specific-site foraging behavior. When searching for animal prey items, they examine a variety of microhabitats (dry palm leaves, twigs, under loose bark, in tree cavities). These microhabitats were spatially dispersed among different forest macrohabitats such as swamp forests and dry forested areas. These data indicated that the prey foraging behavior of L. chrysopygus was quite variable, and they used a wide variety of microhabitats, different of the other lion tamarin species. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Callitrichidae; Leontopithecus chrysopygus; Black lion tamarin; Animal prey; Foraging behavior; Diet; Microhabitats. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000600022 |
| |
|
|
| Barbosa,Fernando Mendes; Campos,Lúcio Antônio de Oliveira; Paixão,Joana Fidelis da; Alves,Rogério Marcos de Oliveira. |
| ABSTRACT Flight activity of bees is influenced both by environmental factors and by internal condition of the colonies. Information about external activity of bees is very important, because it provides data of the species biology, supplying subsidies for the use of these insects in the pollination of crops. The present work aim to evaluate the flight activity of Geotrigona subterranea (Friese, 1901) (Hymenoptera: Apidae) in natural environment. This study was performed on the Instituto Federal do Norte de Minas Gerais, in the municipality Januária, Minas Gerais State. Two natural nests were observed. The activities of bees of the colonies were recorded three days each month, during the period of December 2011 to November 2012, totaling 924 observations.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Foraging behavior; Meliponini; Pollen; Resin; Detritus. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492016001200151 |
| |
|
| |
|
| |
|
|
| Granzotti,Rafaela V.; Muniz,Carolina M.; Gomes,Luiz C.. |
| ABSTRACT Habitat complexity influences species diversity and regulates trophic interactions, mostly by increasing resource partitioning within habitats and providing refuge for prey. The influence of habitat complexity on more than two trophic levels is not well understood, mainly because behavioral modifications of prey and predator may influence the outcome of trophic interactions. Thus, we conducted a two-factor experiment with a three-level trophic chain: a piscivorous fish [Hoplerythrinus unitaeniatus (Spix & Agassiz 1829)], an invertivorous fish (Moenkhausia forestii Benine, Mariguela & C. de Oliveira, 2009) and an aquatic macroinvertebrate (Chironomidae larvae). We measured prey consumption in low, intermediate and high habitat complexity,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Macrophytes; Predator-prey interactions; Piscivory; Foraging behavior. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212018000100228 |
| |
|
|
| Ponsero, Alain; Sturbois, Anthony; Desroy, Nicolas; Le Mao, Patrick; Jones, Auriane; Fournier, Jerome. |
| The relationship between foraging shorebirds, macrobenthos and sedimentary parameters has been widely studied across Western Europe. Megatidal areas have large zones uncovered when the water retreats. Consequently, in such cases, the tide also influences foraging activities. This paper examines the use of an intertidal space by waders to define how macrobenthic resource concentrates foraging activity of birds in a large megatidal sandflat. This approach combines accurate spatial distribution of waders (Oystercatcher, Eurasian curlew, Bar-tailed Godwit and Redknot) according to their activity with ecological/biological parameters. A differential exploitation of the flat is clearly shown, with macrobenthic biomass appearing as one of the main explanatory... |
| Tipo: Text |
Palavras-chave: Waders; Benthos; Foraging behavior; Sandflat; Megatidal environment. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00340/45168/44563.pdf |
| |
|
|
| Passos,Fernando C.; Alho,Cleber J. R.. |
| Prey foraging behavior in the Black Lion Tamarin, Leontopithecus chrysopygus (Mikan, 1823) was observed in the Caetetus Ecological Station, southeastern Brazil, during 550 hours of direct observations between December 1993 and February 1995. The scan sampling method was used to gather data. These tamarins use manipulative, specific-site foraging behavior. When searching for animal prey items, they examine a variety of microhabitats. The most important microhabitat used for prey foraging behavior was tree cavities (41% of the foraging observations), but palm trees (22%), bamboo (12%), vines (11%), bark (5%), seed pods of the "jequitiba" tree (4%), other places (3%) and epiphytes (2%) were also observed. Animal preys were frequently captured in understory... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mammalia Leontopithecus chrysopygus; Black lion tamarin; Foraging behavior; Microhabitats; Seasonality; Primates. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000500029 |
| |
|
|
| Francini-Filho,Ronaldo B.; Moura,Rodrigo L.; Ferreira,Camilo M.; Coni,Ericka O. C.. |
| Parrotfishes (Perciformes: Scaridae) represent a critical functional group on coral reefs because their intense herbivory activity helps in avoiding coral overgrowth by algae. Although feeding preferentially on algae and detritus, some parrotfish species also consume live corals, leading to detrimental effects that may offset the benefits of removing competitive seaweeds. Parrotfish species differ markedly in terms of jaw morphology, foraging activity and extent of substratum excavation, and are typically divided into three functional groups: browsers, scrapers and excavators. The recognition of species within each functional group helps to understand their relative effects in terms of bioerosion, coral fitness and survival, habitat alteration and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Foraging behavior; Bioerosion; Grazing scars; Scarus trispinosus; Sparisoma amplum. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000200006 |
| |
|
| |
|
| |
|
|
| Sujii,Edison Ryoiti; Garcia,Maria Alice; Fontes,Eliana Maria Gouveia; O'Neil,Robert James. |
| The objective of this work was to evaluate the potential control of the ant Pachycondyla obscuricornis Emery (Hymenoptera Formicidae) on populations of nymphs of the spittlebug, Deois flavopicta Stal (Hemiptera Cercopidae). Foraging behavior and prey consumption rate of P. obscuricornis were evaluated. Field data revealed that P. obscuricornis does not show aggressive behavior against individuals of the same species, when they are not carrying a prey; they can patrol distances larger than 10 m searching for prey, and they can build their nest as close as 1 m from each other. The ant has a solitary patrolling habit, there is no recruitment behavior, and individuals dislocate fast, browsing on soil and vegetation for prey. Predation rate on spittlebug nymphs... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Biological control; Foraging behavior; Predation. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2004000600014 |
| |
|
|
| Serra,Bruna D V; Campos,Lucio A de O. |
| The objectives of this work were to determine the squash entomofauna in the region of Viçosa, Minas Gerais state, to study their behavior on flowers and their importance for pollination, verifying the role of each pollinator. The most common species were Trigona spinipes (Fabricius), Trigona hyalinata (Lepeletier), Apis mellifera (L.) and Melipona quadrifasciata (Lepeletier). The visitation behavior of A. mellifera, M. quadrifasciata, and Bombus morio (Swederus) were similar. They visited flowers for nectar collection, positioning themselves vertically between the corolla and the sexual structures of the flowers, with the back directed toward the floral axis, which permitted the removal of pollen from the anthers of flowers with stamens and its deposition... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apidae; Melittophily; Effective pollinator; Pollination efficiency; Foraging behavior. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000200002 |
| |
| Registros recuperados: 24 | |
|
|
|
