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Multitrophic relationships, conditional mutualisms, and the study of interaction biodiversity in tropical savannas Neotropical Entomology
Del-Claro,Kleber.
Biodiversity as a focus for conservation efforts has received increased attention since the second half of the last century. Until recently a more landscape-level view of biodiversity has prevailed. This essay proposes to discuss natural diversity in ways that embrace the extreme richness inherent in plant animal interactions, including not only trophic relationships, but also aspects of life history, biology, and behavior of related species. The ant-plant-herbivore systems in Cerrado vegetation are pointed out as good model for gaining a better understanding of "interaction biodiversity".
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ant; Cerrado; Extrafloral nectary; Herbivory; Plant.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000600002
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Host-parasite interactions between the piranha Pygocentrus nattereri (Characiformes: Characidae) and isopods and branchiurans (Crustacea) in the rio Araguaia basin, Brazil Neotropical Ichthyology
Carvalho,Lucélia Nobre; Arruda,Rafael; Del-Claro,Kleber.
In the tropics, studies on the ecology of host-parasite interactions are incipient and generally related to taxonomic aspects. The main objective of the present work was to analyze ecological aspects and identify the metazoan fauna of ectoparasites that infest the piranha, Pygocentrus nattereri. In May 2002, field samples were collected in the rio Araguaia basin, State of Goiás (Brazil). A total of 252 individuals of P. nattereri were caught with fishhooks and 32.14% were infested with ectoparasite crustaceans. The recorded ectoparasites were branchiurans, Argulus sp. and Dolops carvalhoi and the isopods Braga patagonica, Anphira branchialis and Asotana sp. The prevalence and mean intensity of branchiurans (16.6% and 1.5, respectively) and isopods (15.5%...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Serrasalminae; Cymothoidae; Argulidae; Ectoparasitism; Amazon basin.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000200006
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Natural history and biology of Chlamisus minax Lacordaire (Chrysomelidae: Chlamisinae) Neotropical Entomology
Reu Jr.,Wilson F.; Del-Claro,Kleber.
Although very abundant in the Neotropics, there is little information about the biology, ecology and natural history of Brazilian Chlamisinae beetles. In the present study we investigated directly in the Cerrado vegetation the aspects of natural history and biology of Chlamisus minax Lacordaire. The results showed that the species has annual cycle and the adults are present in the field during the spring and summer when the reproduction occurs. The females cover their eggs with a mantle, and later on the rests of the egg and faeces are added by the larva to the mantle to produce a protective case. The six larval morpho-stages are herbivorous and feed on floral buds of Heteropterys pteropetala A. Juss. (Malpighiaceae). The larvae pupate in the host plants...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Beetle; Behavior; Cerrado; Herbivory.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000300001
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The outcomes of an ant-treehopper association on Solanum lycocarpum St. Hill: increased membracid fecundity and reduced damage by chewing herbivores Neotropical Entomology
Moreira,Vanessa S.S.; Del-Claro,Kleber.
Interactions between ants and hemipterans (Auchenorryncha e Sternorryncha) are important to understand the impact of multitrophic relationships on arthropod diversity on vegetation. The present field study experimentally investigates the outcomes of a multispecies interaction involving four components: ants, hemipteran trophobionts (Enchenopa brasiliensis Strümpel, chewing herbivores, and host plant (Solanum lycocarpum St. Hill). The occurrence of temporal variation in the outcomes of the relationships was also investigated. Results showed that ants were benefited by a rich food source predictable in time and space, while membracids survived better under ant attendance. Ant tending also had a positive impact on treehopper fecundity. Presence of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mutualism; Multitrophic interaction; Ant-Hemiptera association; Solanaceae; Membracidae.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000600002
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Floral visitors of Chamaecrista debilis (Vogel) Irwin & Barneby (Fabaceae - Caesalpinioideae) at cerrado of Estação Ecológica de Jataí, São Paulo State, Brazil Neotropical Entomology
Nascimento,Elynton A. do; Del-Claro,Kleber.
Although Chamaecrista Moench genus is a very important source of pollen to bees in the Cerrado, this relationship is almost unknown. Within flower visitors of Ch. debilis, we found hymenopterans (Apidae) as the most abundants, but Coleoptera (Buprestidae) and Lepidoptera (Noctuidae) were also collected. Bees of great size are pointed out as effective pollinators of Cassiinae. Only five out of seventeen species of floral visitors of Ch. debilis sampled in cerrado, are indicated as possible pollinators, from which four species were not previously indicated in other papers.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pollination; Bee; Cassiinae; Apidae.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000400024
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Diversity of social wasps (Hymenoptera: Vespidae) in Cerrado fragments of Uberlândia, Minas Gerais State, Brazil Neotropical Entomology
Elpino-Campos,Ábner; Del-Claro,Kleber; Prezoto,Fábio.
Sudies of species survey are important to know the available natural resources and to get useful information about the ecological characteristics of a specific area. There are not studies, on this issue, related to social wasps, in the Triângulo Mineiro region. The present study describes the diversity of species found in fragments of the cerrado region in Uberlândia, MG, and their temporal distribution. The field study was conducted from October 2003 to September 2004, and 43 samplings were carried out using active searching (24) and point sampling (19) methodologies. Twenty-nine species were found in 10 genera, Polybia and Polistes corresponding to 51.5% of the total listing. Mischocyttarus cerberus styx Richards represented 26.5% of the total...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Swarm founding wasp; Sampling method; Inventory.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000500008
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Insect-plant interactions: new pathways to a better comprehension of ecological communities in Neotropical savannas Neotropical Entomology
Del-Claro,Kleber; Torezan-Silingardi,Helena M.
The causal mechanisms shaping and structuring ecological communities are among the most important themes in ecology. The study of insect-plant interactions in trophic nets is pointed out as basic to improve our knowledge on this issue. The cerrado tropical savanna, although extremely diverse, distributed in more than 20% of the Brazilian territory and filled up with rich examples of multitrophic interactions, is underexplored in terms of biodiversity interaction. Here, this ecosystem is suggested as valuable to the study of insect-plant interactions whose understanding can throw a new light at the ecological communities' theory. Three distinct systems: extrafloral nectary plants or trophobiont herbivores and the associated ant fauna; floral...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; Community; Ecological interaction; Herbivory.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2009000200001
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Color changing and behavioral context in the Amazonian Dwarf Cichlid Apistogramma hippolytae (Perciformes) Neotropical Ichthyology
Rodrigues,Raoni Rosa; Carvalho,Lucélia Nobre; Zuanon,Jansen; Del-Claro,Kleber.
Animal coloration has many functions, and fishes are noted among vertebrates for presenting a wide variety of color patterns. Although in marine fishes the relationship between body coloration and behavioral context is well documented, there's not much information about freshwater fishes. Here we describe color patterns displayed by the dwarf cichlid Apistogramma hippolytae and suggest that these patterns are dependent on different social and behavioral settings. Field observations were conducted underwater in a pond in Central Amazonia, Brazil. We recorded six body coloration patterns related to seven different kinds of behavioral activities: foraging, resting, reproductive and agonistic displays, aggression (attacking and fleeing) and parental care....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Intraspecific communication; Interspecific communication; Color changes; Parental care; Cichlidae.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000400013
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Seasonal variation of ground spiders in a Brazilian Savanna Rev. Bras. Zool.
Mineo,Marina Farcic; Del-Claro,Kleber; Brescovit,Antonio Domingos.
The Brazilian Savanna Ecoregion (Cerrado) is one of the richest biomes in the world, with a characteristic highly seasonal climate a dry season between May and September and a rainy season from October through April. Ground-dwelling spiders from three Cerrado phytophysiognomies, "campo cerrado", "cerrado" and "cerradão", were sampled using pitfall traps during two years, totaling 111 species and 3,529 individuals. The abundance of individuals and species richness was higher during the wet season. Fifty-eight species were captured exclusively during that period, whereas only nineteen were restricted to the dry season. Only two species were found in all samples. The number of juveniles was higher than the number of adults in all phytophysiognomies and in all...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Araneae; Brazil; Community ecology; Seasonality.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000300006
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Oviposition and post-embryonic development of Aglaoctenus lagotis (Araneae: Lycosidae) Rev. Bras. Zool.
Moreira,Vanessa Stefani Sul; Del-Claro,Kleber.
The present study describes the life history of Aglaoctenus lagotis Holmberg, 1876 from oviposition to adulthood, analyzing the number of eggs in each egg sac, birth rate, number of instars, sex ratio, cephalothorax size of all instars, and developmental time in laboratory. The results indicate that the studied species can produce two egg sacs during the reproductive period, and that the post-embryonic phase includes 12 nymphal instars. A higher mortality rate was observed during the first three instars, featuring a Type III survival curve. The sex ratio was geared towards the female in the adults and no significant difference was observed in the length of the cephalothorax between male and female. This species can therefore be considered monomorphic....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Birth rate; Number of instars; Sexual dimorphism.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000500003
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Ecology of neotropical mistletoes: an important canopy-dwelling component of Brazilian ecosystems Acta Botanica
Arruda,Rafael; Fadini,Rodrigo Ferreira; Carvalho,Lucélia Nobre; Del-Claro,Kleber; Mourão,Fabiana Alves; Jacobi,Claudia Maria; Teodoro,Grazielle Sales; Berg,Eduardo van den; Caires,Claudenir Simões; Dettke,Greta Aline.
Mistletoes have been studied in temperate countries regularly because they can be pests of cultivated plants and forest plantations. In comparison with temperate habitats, little is known about the ecology of mistletoes in the Neotropics. More emphasis should be given to neotropical mistletoes because they could be important elements of plant communities, acting as key resources for pollinators, seed dispersers and herbivores. Using a combination of findings from early mistletoe studies and empirical evidence from several recent case studies, we report emerging patterns of mistletoe interactions with associated organisms and propose aims for further studies. There has been increasing interest in working with mistletoes in Brazil. Although there are some...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hemiparasites; Biological conservation; Host specificity; Host compatibility.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062012000200003
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Predatory behavior of Pseudodorus clavatus (Diptera, Syrphidae) on aphids tended by ants Rev. Bras. entomol.
Bächtold,Alexandra; Del-Claro,Kleber.
Predatory behavior of Pseudodorus clavatus (Diptera, Syrphidae) on aphids tended by ants. In this study, we examined the interactions between myrmecophilous aphids, their ant-guards and a predatory syrphid species, Pseudodorus clavatus (F.). Larvae of this predator were found in the colonies of three aphid species: Aphis gossypii, A. spiraecola and Toxoptera sp., which were tended by eight ant species, especially Camponotus. Hoverfly larvae managed to infiltrate the aphid colonies and consume nymphs. Predator larvae exhibited inconspicuous movements and were not detected by ants which were commonly observed touching and antennating the larvae they come into contact. These results suggest that behavioral and chemical cues are involved in the infiltration...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; Myrmecophilous aphids; Predation; Syrphid.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262013000400017
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Patterns of growth, development and herbivory of Palicourea rigida are affected more by sun/shade conditions than by Cerrado phytophysiognomy Acta Botanica
Moura,Renan Fernandes; Alves-Silva,Estevão; Del-Claro,Kleber.
ABSTRACT Plant development is influenced by several abiotic factors, which in turn influence morphological traits and life history. We investigated whether leaf area, herbivory, toughness, fluctuating asymmetry, structural complexity and the number of inflorescences of Palicourea rigida are influenced by sun/shade conditions or by Cerrado phytophysiognomy (typical cerrado or rupestrian field). We expected to find greater structural complexity, leaf toughness and more inflorescences in sun plants; shaded plants were expected to exhibit a greater degree of fluctuating asymmetry (an index of plant stress), reduced leaf toughness and greater herbivory. As for phytophysiognomies, we expected to find higher levels of leaf toughness and reduced structural...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian savanna; Environmental stress; Fluctuating asymmetry; Leaf area loss; Rubiaceae; Rupestrian grassland.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200286
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