Six freshwater microturbellarian species (Platyhelminthes) in permanent wetlands of the Coastal plain of southern Brazil: new records, abundance, and distribution

Microturbellarians occur in a wide range of ecosystems, but their diversity and distribution are largely unknown. In this work, we report on the morphology, abundance, and distribution of 6 species of microturbellarians, namely Baicalellia evelinae, Catenula evelinae, C. leuca, C. turgida, Gieysztoria chiqchi, and Stenostomum hemisphericum. We provide photographs and schematic drawings of the specimens in vivo. Three of them were known only for their type localities. Most species showed low to moderate abundance and were found in a single wetland in this study. Gieysztoria chiqchi is reported from Brazil for the first time. All records extend the ranges of the species at least 800 km to the southeast.Facultad de Ciencias Naturales y Muse

Six freshwater microturbellarian species (Platyhelminthes) in permanent wetlands of the Coastal plain of southern Brazil: new records, abundance, and distribution

Microturbellarians occur in a wide range of ecosystems, but their diversity and distribution are largely unknown. In this work, we report on the morphology, abundance, and distribution of 6 species of microturbellarians, namely Baicalellia evelinae, Catenula evelinae, C. leuca, C. turgida, Gieysztoria chiqchi, and Stenostomum hemisphericum. We provide photographs and schematic drawings of the specimens in vivo. Three of them were known only for their type localities. Most species showed low to moderate abundance and were found in a single wetland in this study. Gieysztoria chiqchi is reported from Brazil for the first time. All records extend the ranges of the species at least 800 km to the southeast.Facultad de Ciencias Naturales y Muse

Six freshwater microturbellarian species (Platyhelminthes) in permanent wetlands of the Coastal plain of southern Brazil: New records, abundance, and distribution

Microturbellarians occur in a wide range of ecosystems, but their diversity and distribution are largely unknown. In this work, we report on the morphology, abundance, and distribution of 6 species of microturbellarians, namely Baicalellia evelinae, Catenula evelinae, C. leuca, C. turgida, Gieysztoria chiqchi, and Stenostomum hemisphericum. We provide photographs and schematic drawings of the specimens in vivo. Three of them were known only for their type localities. Most species showed low to moderate abundance and were found in a single wetland in this study. Gieysztoria chiqchi is reported from Brazil for the first time. All records extend the ranges of the species at least 800 km to the southeast.Fil: Braccini, João A. L.. Universidade do Vale do Rio dos Sinos; BrasilFil: Brusa, Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División de Zoología Invertebrados; ArgentinaFil: Leal Zanchet, Ana M.. Universidade do Vale do Rio dos Sinos; Brasi

Figures 2–7 in Six freshwater microturbellarian species (Platyhelminthes) in permanent wetlands of the Coastal Plain of southern Brazil: new records, abundance, and distribution

Figures 2–7. Photographs of specimens in vivo after squeeze preparation (2, 4, 6) and diagrammatic reconstructions in dorsal view(3,5,7)of speciesofCatenula recordedinthe CoastalPlainof southernBrazil.2,3.Catenulaevelinae.4,5.C.leuca.6,7.C.turgida. Scalebars=100µm

Efeito do condicionamento osmótico em sementes de Brachiaria brizantha cv. Marandu Effect of osmoconditioning in seeds of Brachiaria brizantha cv. Marandu

A implantação rápida e segura de pastagens por meio de sementes de boa qualidade é condição básica para o sucesso de sua exploração. Com objetivo de contribuir para solução de problemas inerentes às sementes de Brachiaria brizantha, como baixo vigor e desuniformidade de germinação, foi conduzido um experimento, no qual se procurou avaliar o efeito do condicionamento fisiológico nestas sementes. O ensaio, realizado no Laboratório de Análise de Sementes do Departamento de Agricultura da Universidade Federal de Lavras, foi conduzido com diferentes solutos (PEG 6000, KNO3 e PEG 6000 + KNO3), potenciais hídricos (-0,9; -1,1 e 1,4MPa), períodos de condicionamento (12, 24, 48 e 72 horas) e duas testemunhas (presença e ausência de escarificação), sem condicionamento osmótico. Os efeitos dos tratamentos foram avaliados pelos testes de germinação, índice de velocidade de protrusão radicular e tempo para ocorrência de 50% de germinação. Foi possível concluir que o condicionamento fisiológico promove maior vigor quando as sementes são imersas em solução por um período de 12 horas a potenciais hídricos mais negativos.<br>The fast and safe establishment of pastures by means of high quality seeds is a basic condition to the success of its production. With the purpose of contributing towards the solution of problems inherent to the seeds of Brachiaria brizantha, such as poor vigor and non-uniformity of germination, an experiment was conducted to evaluate the effect of the physiological conditioning on the quality of these seeds. The trial, accomplished in the Seed Analysis Laboratory of the Department of Agriculture of the Federal University of Lavras, was conducted with different solutes (PEG 6000, KNO3 and PEG 6000 + KNO3), water potentials (-0.9; -1.1 and 1.4 MPa), conditioning periods (12, 24, 48 and 72 hours) and two checks (with and without scarification, with no osmoconditioning). The effects of the treatments were evaluated by germination tests, root protrusion velocity index and time to occurrence of 50% of germination. It was possible to conclude that the physiological conditioning promotes greater vigor when the seeds are immersed in solution for a 12 hour period, at more negative water potentials

FCC Physics Opportunities: Future Circular Collider Conceptual Design Report Volume 1

We review the physics opportunities of the Future Circular Collider, covering its e+e-, pp, ep and heavy ion programmes. We describe the measurement capabilities of each FCC component, addressing the study of electroweak, Higgs and strong interactions, the top quark and flavour, as well as phenomena beyond the Standard Model. We highlight the synergy and complementarity of the different colliders, which will contribute to a uniquely coherent and ambitious research programme, providing an unmatchable combination of precision and sensitivity to new physics

FCC Physics Opportunities: Future Circular Collider Conceptual Design Report Volume 1

We review the physics opportunities of the Future Circular Collider, covering its e+e-, pp, ep and heavy ion programmes. We describe the measurement capabilities of each FCC component, addressing the study of electroweak, Higgs and strong interactions, the top quark and flavour, as well as phenomena beyond the Standard Model. We highlight the synergy and complementarity of the different colliders, which will contribute to a uniquely coherent and ambitious research programme, providing an unmatchable combination of precision and sensitivity to new physics