Publicações - ciências biológicas
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Walter Antonio Boeger;
Delane C. Kritsky;
Márcio Pie;
Kerlen B Engers
Palavra-chave:
Parasitology;
Immune System;
Virulence;
Gyrodactylus
Áreas do conhecimento:
Ciências Biológicas; Bioquímica dos Microorganismos; Enzimologia;
Ciências Biológicas; Ecologia; Ecologia de Ecossistemas
resumo ...
Compared to other monogenoidean groups, viviparous gyrodactylids exhibit extraordinary species diversity and broad host range. It has been suggested that this evolutionary success is associated with a suite of morphological and life-history traits that include, in part, continuous transmission (i.e., ability to infect new hosts throughout the gyrodactylid life cycle). Experiments were conducted to explore the putative adaptive advantage of continuous transmission within viviparous gyrodactylids during colonization of new host resources. Differences in infrapopulation growth, such as abundance, prevalence, and duration of the infection, of Gyrodactylus anisopharynx on 3 species of fish—Corydoras paleatus and Corydoras ehrhardti (both natural hosts) as well as Corydoras schwartzi (a host not known to harbor G. anisopharynx)—held under isolated and grouped conditions were determined. Results showed that infrapopulations of G. anisopharynx on C. paleatus and C. schwartzi had higher growth when the parasite had the opportunity for host transfer (grouped hosts). Infrapopulations of G. anisopharynx on isolated and grouped C. ehrhardti showed an opposite trend, although differences in mean duration and maximum abundance were not statistically different. Results obtained from experiments with C. paleatus and C. schwartzi support the hypothesis that continuous transmission in viviparous gyrodactylids enhances colonization success, probably by allowing initial avoidance of Red Queen dynamics. The absence of statistical differences between infrapopulations on isolated and grouped C. ehrhardti suggests that parasite dynamics may be influenced by factors other than continuous transmission in this host.
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ALVARENGA, LARISSA;
NGUYEN, C;
AMIM, P;
NGUYEN, C;
NGUYEN, C;
DELIMA, M;
SANTOS, R;
GRANIER, C;
NGUYEN, C
Palavra-chave:
Anti-toxinas;
Anticorpos monoclonais;
Detoxificação de toxinas;
Tityus serrulatus;
Toxinas
Áreas do conhecimento:
Ciências Biológicas; Bioquímica dos Microorganismos; Enzimologia
resumo ...
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Carla Finkler;
Carolina Giacomet;
Muschner, Valèria C.;
Salzano, Francisco M.;
Freitas, Loreta B.;
Muschner, V. C.
Palavra-chave:
Passiflora;
proteínas betv-homólogas
Áreas do conhecimento:
Ciências Biológicas; Genética Vegetal
resumo ...
The major birch pollen allergen, Bet v 1, responsible for allergic reactions in many areas of the world, is homologous to a large number of pathogenesis-related proteins (PRs), identified as PR10. As part of a long-range investigation of these types of proteins and of evolution in Passiflora,DNA sequences from eight Bet v 1 homologue isoforms were obtained from five species of this genus in Brazil, and their sequences compared among themselves and with 30 others from 8 different species, classified in different taxonomic units. The objective was a first characterization of these PRs in wild passionflowers, and their use for evolutionary and applied investigations. High interspecific, but low intraspecific variability was observed, as expected from multigenic families subjected to concerted evolution. The relationships obtained both within Passiflora and between it and seven other genera probably best reflect functional similarities than evolutionary history.
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Lucimara Mach Côrtes Cordeiro;
REIS, RODRIGO ARANTES;
Leonardo Magalhães Cruz;
Elfried Stocker-Worgotter;
M. Grube;
Marcelo Iacomini
Áreas do conhecimento:
Ciências Biológicas; Bioquímica; Bioquímica
resumo ...
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Lucimara Mach Côrtes Cordeiro;
REIS, RODRIGO ARANTES;
Leonardo Magalhães Cruz;
Elfriede Stocker Wörgötter;
Martin Grube;
Marcelo Iacomini
Palavra-chave:
Lichen;
sequencing;
16S rDNA;
Phylogeny
Áreas do conhecimento:
Ciências Biológicas; Biologia Molecular; Biodiversidade
resumo ...
Abstract. A light microscopic and molecular analysis of photobionts in Ramalina and Cladonia from coastal habitats of Brazil is presented. A Bayesian phylogenet
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Lucimara Mach Côrtes Cordeiro;
REIS, RODRIGO ARANTES;
Leonardo M Cruz;
Elfried Stocker-Worgotter;
M. Grube;
Marcello Iacomini
Áreas do conhecimento:
Ciências Biológicas; Bioquímica dos Microorganismos; Enzimologia
resumo ...
Abstract. A light microscopic and molecular analysis of photobionts in Ramalina and Cladonia from coastal habitats of Brazil is presented. A Bayesian phylogenet
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Ricardo Adaime da Silva;
Almeida, LM.;
Antonio Carlos Busoli
Palavra-chave:
Coccidophilus citricola;
Predador;
Cochonilha
Áreas do conhecimento:
Ciências Biológicas; Bioquímica dos Microorganismos; Enzimologia;
Ciências Biológicas; Zoologia; Zoologia Aplicada; Conservação das Espécies Animais;
Ciências Biológicas; Zoologia; Zoologia Aplicada; Controle
resumo ...
Imaturos e adultos de Coccidophilus citricola Brèthes, 1905 são descritos e ilustrados com...
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Dalva Luiz de Queiroz Santana;
Keti Maria Rocha Zanol
Palavra-chave:
Ctenarytaina;
Hemiptera;
Psyllidae;
morfologia
Áreas do conhecimento:
Ciências Biológicas; Zoologia; Morfologia dos Grupos Recentes
resumo ...
Ctenarytaina spatulata Taylor, 1997 foi introduzida no Brasil na década de 1990 em plantios de...
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Camargo, Amabílio J. A. de;
Mirna Martins Casagrande;
Mielke, Olaf H. H.;
Furtado, Eurides
Palavra-chave:
Brasil;
morfologia;
Mariposa;
Neotropical
Áreas do conhecimento:
Ciências Biológicas; Zoologia; Taxonomia dos Grupos Recentes
resumo ...
A morfologia externa do adulto de Almeidaia aidae Mielke & Casagrande, 1981 é descrita e...
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Camargo, Amabílio J. A. de;
Mirna Martins Casagrande;
Mielke, Olaf H. H.;
Furtado, Eurides
Palavra-chave:
Brasil;
Mariposa;
Neotropical;
Cerrado
Áreas do conhecimento:
Ciências Biológicas; Zoologia; Taxonomia dos Grupos Recentes
resumo ...
A morfologia externa do tórax e apêndices de Almeidaia aidae Mielke & Casagrande, 1981 é...
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