Publicações - ciências biológicas
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SPERB, EDILENA REIS;
Tadra-Sfeir, M. Z.;
SPEROTTO, RAUL ANTÔNIO;
FERNANDES, GABRIELA DE CARVALHO;
Fábio de Oliveira Pedrosa;
Emanuel Maltempi de Souza;
PASSAGLIA, LUCIANE MARIA PEREIRA
Áreas do conhecimento:
Ciências Biológicas; Bioquímica dos Microorganismos; Enzimologia;
Ciências Biológicas; Bioquímica; Bioquímica dos Microorganismos
resumo ...
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BLANDÓN, LINA M.;
ISLAN, GERMAN A.;
CASTRO, GUILLERMO R.;
Miguel Noseda;
Thomaz-Soccol, Vanete;
Carlos Ricardo Soccol
Palavra-chave:
polysaccharides;
Oral delivery
Áreas do conhecimento:
Ciências Biológicas; Biotecnologia
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Bruna da Silva Soley;
Rafael Leite Marais;
PESQUERO, J;
Michael Bader;
OTUKI, M;
CABRINI, D
Palavra-chave:
kinins;
B1 and B2 receptors;
skin wound healing;
inflammation;
Skin
Áreas do conhecimento:
Ciências Biológicas; Bioquímica dos Microorganismos; Enzimologia
resumo ...
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bruna silva soley;
Rafael Leite morais;
PESQUERO, J;
Michael Bader;
OTUKI, M;
Daniela Almeida Cabrini
Palavra-chave:
kinins;
skin wound healing;
Skin;
inflammation;
B1 and B2 receptors
resumo ...
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Augusto, Danillo G.;
AMORIM, LEONARDO M.;
FARIAS, TICIANA D.J.;
Maria Luiza Petzl-Erler
Palavra-chave:
killer cell immunoglobulin-like receptors;
population genetics;
Japanese;
Genetic polymorphism;
HLA
Áreas do conhecimento:
Ciências Biológicas; Genética Humana e Médica;
Ciências Biológicas; Imunologia; Imunogenética
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Camila Fediuk de Castro-Guedes;
Almeida, LM.
Palavra-chave:
Biological Control;
Coccinellidae
Áreas do conhecimento:
Ciências Biológicas; Controle Biológico
resumo ...
Abstract. Harmonia axyridis (Pallas, 1773) is an Asian coccinellid released in several places to act as a biological control agent of aphids. Dinocampus coccine
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Andressa Pelozo;
BOEGER, M. R. T.;
Carolina Sereneski;
Patricia Soffiatti
Palavra-chave:
adaptive strategies, functional morphology
resumo ...
(en)
The initial phase of a plant life cycle is a short and critical period, when individuals are more vulnerable to environmental factors. The morphological and anatomical study of seedlings and saplings leaf type, enables the understanding of species strategies of fundamental importance in their establishment and survival. The objective of this study was to analyze the structure of seedlings and saplings leaf types of three mangrove species, Avicennia schaueriana, Laguncularia racemosa, Rhizophora mangle, to understand their early life adaptive strategies to the environment. A total of 30 fully expanded cotyledons (A. schaueriana and L. racemosa), 30 leaves of seedlings, and 30 leaves of saplings of each species were collected from a mangrove area in Guaratuba Bay, Paraná State, Brazil. Following standard methods, samples were prepared for morphological (leaf dry mass, density, thickness) and anatomical analysis (epidermis and sub-epidermal layers, stomata types, density of salt secretion glands, palisade and spongy parenchyma thickness). To compare leaf types among species one-way ANOVA and Principal Component Analysis were used, while Cluster Analysis evaluated differences between the species. We observed significant structural differences among species leaf types. A. schaueriana showed the thickest cotyledons, while L. racemosa presented a dorsiventral structure. Higher values of the specific leaf area were observed for seedlings leaves of A. schaueriana, cotyledons of L. racemosa and saplings leaves of A. schaueriana and R. mangle. Leaf density was similar to cotyledons and seedlings leaves in A. schaueriana and L. racemosa, while R. mangle had seedlings leaves denser than saplings. A. schaueriana and R. mangle showed hypostomatic leaves, while L. racemosa amphistomatic; besides, A. chaueriana showed diacytic stomata, while L. racemosa anomocytic, and R. mangle ciclocytic. Seedling leaves were thicker in R. mangle (535 µm) and L. racemosa (520 µm) than in A. schaueriana (470.3 µm); while saplings leaves were thicker in L. racemosa (568.3 µm) than in A. schaueriana seedlings (512.4 µm) and R. mangle (514.6 µm). Besides, seedlings leaves palisade parenchyma showed increasing thickness in L. racemosa (119.2 µm) < A. schaueriana (155.5 µm) < R. mangle (175.4 µm); while in saplings leaves as follows R. mangle (128.4 µm) < A. schaueriana (183.4 µm) < L. racemosa (193.9 µm). Similarly, seedlings leaves spongy parenchyma thickness values were as follows A. schaueriana (182.6 µm) = R. mangle (192.8 µm) < L. racemosa (354.4 µm); while in saplings were A. schaueriana (182.6 µm) = R. mangle (187.3 µm) < L. racemosa (331.3 µm). The analyzed traits, in different combinations, represent morphological adjustments of leaf types to reduce water loss, eliminate salt excess, increase the absorption of light, allowing a higher efficiency on the maintenance of physiological processes in this initial growth stage.
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La fase inicial del ciclo de vida de una planta es un período corto y crítico, cuando los individuos son más vulnerables a factores ambientales. El estudio morfológico y anatómico del tipo de hojas de las plántulas y árboles pequeños, permite la comprensión de las estrategias de las especies, que es de importancia fundamental para su establecimiento y supervivencia. El objetivo de este estudio fue analizar la estructura de los tipos de hojas de las plántulas y árboles pequeños de tres especies de mangle: Avicennia schaueriana, Laguncularia racemosa y Rhizophora mangle, para entender sus estrategias de vida tempranas de adaptación al ambiente. Un total de 30 cotiledones completamente abiertos (A. schaueriana y L. racemosa), 30 hojas de plántulas, y 30 hojas de árboles pequeños de cada especie se recolectaron en una área de manglar en Bahía Guaratuba, Estado de Paraná, Brasil. Siguiendo los métodos estándares, se prepararon muestras para análisis morfológicos (biomasa de hoja seca, densidad y espesor) y anatómicos (epidermis y capas sub-epidérmicas, tipos de estomas, densidad de glándulas secretoras de sal y grosor del parénquima empalizado y del esponjoso). Para comparar los tipos de hojas entre las especies se utilizaron un modelo lineal y Análisis de Componentes Principales, mientras que un análisis de conglomerados evaluó las diferencias entre las especies. Observamos diferencias estructurales significativas entre tipos de hoja en las especies. A. schaueriana mostró cotiledones más gruesos, mientras que L. racemosa presenta una estructura dorsiventral. Se observaron valores más altos del área foliar específica para las hojas de las plántulas de A. schaueriana, cotiledones de L. racemosa y hojas de árboles pequeños de A. schaueriana y R. mangle. La densidad de la hoja fue similar a la de los cotiledones y hojas de plántulas de A. schaueriana y L. racemosa, mientras que R. mangle tenía las hojas de las plántulas más gruesas que los árboles pequeños. A. schaueriana y R. mangle mostraron hojas hipostomáticas; L. racemosa anfiestomáticas; por otro lado A. chaueriana mostró estomas diacíticos, L. racemosa anomocíticos y R. mangle ciclocíticos. Las hojas de las plántulas eran más gruesas en R. mangle (535 micras) y L. racemosa (520 micras) que en A. schaueriana (470.3 m); mientras que las hojas de las plántulas eran más gruesas en L. racemosa (568.3 m) que en A. schaueriana (512.4 micras) y R. mangle (514.6 m). Además el parénquima empalizado de las plántulas mostró un aumento de espesor en L. racemosa (119.2 m) < A. schaueriana (155.5 m) <R. mangle (175.4 m); mientras que en las hojas de los árboles pequeños fue de siguiente manera: R. mangle (128.4 m) <A. schaueriana (183.4 m) <L. racemosa (193.9 m). Del mismo modo, en las hojas de las plántulas los valores del espesor del parénquima esponjoso fueron: A. schaueriana (182.6 m) = R. mangle (192.8 m) <L. racemosa (354.4 m); mientras que en los árboles pequeños: A. schaueriana (182.6 m) = R. mangle (187.3 m) <L. racemosa (331.3 m). Los rasgos analizados, en diferentes combinaciones, representan ajustes morfológicos de tipos de hojas para reducir la pérdida de agua, eliminar el exceso de sal, aumentar la absorción de la luz, lo que permite una mayor eficiencia en el mantenimiento de los procesos fisiológicos en esta etapa de crecimiento inicial.
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José Milton Andriguetto Filho;
DA NATIVIDADE, CLÁUDIO DYBAS;
Frederico Pereira Brandini;
TEIXEIRA, RODRIGO DE ALMEIDA
Palavra-chave:
Pesca de arrasto;
camarão;
Fatores ecológicos;
Ciclo de vida;
dinâmicas naturais;
estrutura de populações
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Recursos Pesqueiros Marinhos; Ictioparasitologia;
Ciências Exatas e da Terra; Oceanografia; Oceanografia Biológica; Interação entre os Organismos Marinhos e os Parâmetros Ambientais;
Ciências Biológicas; Ecologia; Ecologia Aplicada; Ecologia de Espécies Explotadas
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The sea-bob shrimp is a shallow-water species whose population dynamics along the southern and southeastern coasts of Brazil is influenced by the upwelling of the South Atlantic Central Water (SACW). Since the SACW does not reach our study area, we hypothesize that life cycle and distribution patterns are dominated by the local regime of estuarine plumes. Also, we would expect higher biomasses and larger individuals in autumn due to the closed fishing season. We conducted a survey for a year, consisting of 20 monthly trawling hauls. Spawning peaks occurred in spring and autumn, related to rainy periods with greater estuarine loads of particulate material and phytoplankton production. The relative abundance of larger individuals increased with depth, while juveniles concentrated at shallower sites. Size classes prior to the closed season were affected by increased fishing during summer due to tourist demand. Water transparency and bottom temperature were the main factors controlling the distribution and life cycle of sea-bob shrimp. Seasonal changes in biomass could be related to the inshore–offshore migrations of the type-3 life cycle, compounded by the impacts of fishing. Thus, fishing and local hydrography can drive life cycle and distribution patterns of the species, with important management implications.
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Ives Simões Arnoni;
Atenisi Pulchério Leite;
Fernando C. Passos;
Eleonora Trajano
Palavra-chave:
mark-recapture;
use of space;
Atlantic Forest
Áreas do conhecimento:
Ciências Biológicas; Bioquímica dos Microorganismos; Enzimologia;
Ciências Biológicas; Zoologia; Zoologia Aplicada; Conservação das Espécies Animais
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In Brazil, bat migrations have been inferred based on seasonal variations in bat abundances...
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CASTELLANO, GIOVANNA C.;
SANTOS, IVONETE APARECIDA;
Carolina Arruda de Oliveira Freire
Palavra-chave:
holothurian;
intertidal;
regulação iônica
Áreas do conhecimento:
Ciências Biológicas; Fisiologia Comparada; Fisiologia Comparativa da Osmorregulação
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Maintenance of ionic gradients and tissue hydration in the intertidal sea cucumber Holothuria grisea under hypo- and hyper-salinity challenges - Volume 98 Issue 2
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