scholarly journals Patógenos florestais quarentenários para o Brasil

FLORESTA ◽  
2000 ◽  
Vol 30 (12) ◽  
Author(s):  
CELSO GARCIA AUER ◽  
ALVARO FIGUEIREDO DOS SANTOS ◽  
ALBINO GRIGOLETTI JUNIOR
Keyword(s):  
Control Measure ◽  
Bursaphelenchus Xylophilus ◽  
Economic Importance ◽  
Health Conditions ◽  
Acacia Mearnsii ◽  
Endocronartium Harknessii ◽  
Quarantine Pathogen ◽  
Black Wattle ◽  
And Control ◽  
Infected Material

Este trabalho resume as informações sobre os patógenos florestais registrados na lista A1, de pragas quarentenárias para a região do Comitê de Sanidade Vegetal do ConeSul (COSAVE). São apresentados aspectos como hospedeiros, sintomatologia, importância econômica e potencial de introdução e controle dos patógenos Bursaphelenchus xylophilus, Cronartium spp., Drepanopeziza populorum, Endocronartium harknessii, Erwinia salicis, Gimnosporangium spp., Mycosphaerella dearnessii, M. gibsonii e Xanthomonas populi. As principais vias de introdução destes patógenos seria na forma de sementes contaminadas ou em material para propagação vegetativa que esteja infectado. A melhor medida de controle seria o tratamento de qualquer material vegetal importado, com os produtos recomendados para o patógeno quarentenário, o plantio e quarentena pós-ingresso em estufas sob inspeção contínua, até se garantir a sanidade das mudas, antes da liberação. Os plantios comerciais brasileiros de Pinus e Populus estão aparentemente resguardados, porém não foram listados patógenos quarentenários para o gênero Eucalyptus e para a acácia-negra. Um aspecto a ser ressaltado é a necessidade de um serviço de prospecção e vigilância para a detecção precoce destes patógenos, a fim de que sejam tomadas medidas para erradicação e controle. Abstract This article summarizes data about quarantine pathogens from A1 list, from quarantine pests for COSAVE region. Aspects as hosts, symptoms, economic importance, risks of introduction and control of Bursaphelenchus xylophilus, Cronartium spp., Drepanopeziza populorum, Endocronartium harknessii, Erwinia salicis, Gimnosporangium spp., Mycosphaerella dearnessii, M. gibsonii e Xanthomonas populi are presented. The ways of pathogen introductions are by contaminated seeds and infected material for vegetative propagation. The best control measure would be treating any imported vegetal material, with recommended products for quarantine pathogen before planting, further maintaining them in greenhouses with continuous inspection, in order to guarantee health conditions for seedlings before release. Brazilian commercial plantations of Pinus and Populus are covered, but quarantine pathogens for Eucalyptus and black wattle (Acacia mearnsii) were not listed. Aspects related to vigilance should be reinforced in order to prevent the entrance of these pathogens and establish adequate measures of control.

scholarly journals Mating Disruption of Pseudococcus calceolariae (Maskell) (Hemiptera, Pseudococcidae) in Fruit Crops

Insects ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 343
Author(s):  
Carolina Ballesteros ◽  
Alda Romero ◽  
María Colomba Castro ◽  
Sofía Miranda ◽  
Jan Bergmann ◽  
...  
Keyword(s):  
Visual Inspection ◽  
Mating Disruption ◽  
Economic Importance ◽  
Fruit Crops ◽  
Potential Control ◽  
The Third ◽  
Pseudococcus Calceolariae ◽  
And Control ◽  
Potential Use ◽  
Control Tool

Pseudococcus calceolariae, the citrophilous mealybug, is a species of economic importance. Mating disruption (MD) is a potential control tool. During 2017–2020, trials were conducted to evaluate the potential of P. calceolariae MD in an apple and a tangerine orchard. Two pheromone doses, 6.32 g/ha (2017–2018) and 9.45 g/ha (2019–2020), were tested. The intermediate season (2018–2019) was evaluated without pheromone renewal to study the persistence of the pheromone effect. Male captures in pheromone traps, mealybug population/plant, percentage of infested fruit at harvest and mating disruption index (MDI) were recorded regularly. In both orchards, in the first season, male captures were significantly lower in MD plots compared to control plots, with an MDI > 94% in the first month after pheromone deployment. During the second season, significantly lower male captures in MD plots were still observed, with an average MDI of 80%. At the third season, male captures were again significant lower in MD than control plots shortly after pheromone applications. In both orchards, population by visual inspection and infested fruits were very low, without differences between MD and control plots. These results show the potential use of mating disruption for the control of P. calceolariae.

Distribution and density of lobsters in the Brazilian oceanic ecosystem Rocas Atoll

Crustaceana ◽  
2019 ◽  
Vol 92 (3) ◽  
pp. 335-351 ◽  
Author(s):  
Juliana Gaeta ◽  
Raúl Cruz
Keyword(s):  
Economic Importance ◽  
Panulirus Argus ◽  
Top Predator ◽  
Visual Census ◽  
Benthic Ecosystems ◽  
Oceanic Ecosystem ◽  
And Control ◽  
Trophic Webs ◽  
Future Information

Abstract Lobsters are recognizable faunal elements that play an important role as top predator in the trophic webs in benthic ecosystems and have an economic importance due to the intensive and valuable fishery. In Rocas Atoll (03°51′S 33°48′W) the presence of five species of lobsters in low tide pools was observed by visual census. These were: Enoplometopus antillensis Lütken, 1865; Palinurellus gundlachi Von Martens, 1878; Panulirus argus (Latreille, 1804); Panulirus echinatus Smith, 1869; and Parribacus antarcticus (Lund, 1793). This atoll appears to be dominated by P. echinatus followed by P. argus, P. antarcticus, P. gundlachi and E. antillensis, respectively. We also observed the presence of some potential predators that perhaps feed on lobster species and control these populations in the atoll. This work and future information could help to better understand the variability of lobster diversity and density in this unique atoll.

scholarly journals Analytical approaches for modeling tree crown volume in black wattle (Acacia mearnsii De Wild.) stands

2016 ◽  
Vol 11 (49) ◽  
pp. 4979-4989
Author(s):  
C. Cadori Guilherme ◽  
R. Sanquetta Carlos ◽  
Pellico Netto Sylvio ◽  
Behling Alexandre ◽  
Costa Junior Sergio ◽  
...  
Keyword(s):  
Tree Crown ◽  
Acacia Mearnsii ◽  
Crown Volume ◽  
Black Wattle ◽  
Analytical Approaches

scholarly journals Evaluation of Bacteriological Quality Characteristics of Drinking Waters of few Village Sources in Coastal Areas of Bhimavaram region at West Godavari District, India

2019 ◽  
Vol 8 (2) ◽  
pp. 888-892
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Water Samples ◽  
Control Measure ◽  
Human Life ◽  
Waterborne Diseases ◽  
Biological Quality ◽  
Bacteriological Quality ◽  
To Come ◽  
And Control

The essential requirement for human life to exist is water. After to the air, the other It has in various sources such as canals, ponds, rivers, lake, streams, reservoirs and etc. human settlers on the banks of major river systems at the earliest and has need water for drinking, bathing, cooking, laundering, and many more. But with the advancement of civilization the demand of water supply grately increased and now has such a stage to come that without well organized public water supply scheme, it is not possible to move the present human life and the develop the towns. Earlier has importance on quantity. And now today importance of quality comes to be recognized gradually in the later days. In this present study, numbers of water samples were collected various water supply schemes from 20 villages of bhimavaram region, West Godavari district, Andhra Pradesh. The drinking water samples are analyze its biological quality and it was found that some of the samples in the study area are exceeds or above the standard limit or permissible limit. On over all based on biological quality few drinking water sources located in and around different areas of Bhimavaram was seriously polluted by harmful bacteria and must need few treatment methods. So that need of attention not to use of supplied water and need to give suggestions and remedial measures to concerned local authorities of various disinfection treatment technologies or control measure to make supplied water free from pathogenic Bactria. Quality Assessment of drinking water from various sources (S Malhotra, S.K., Sndhu (2015), especially bacteriological quality should be periodically planned regularly to avoid and control waterborne diseases

Fasciola gigantica and Fasciola hybrids in Southeast Asia.

2021 ◽  
pp. 423-460
Author(s):  
Nichola Eliza Davies Calvani ◽  
Jan Šlapeta
Keyword(s):  
Life Cycle ◽  
Southeast Asia ◽  
Smallholder Farmers ◽  
Economic Importance ◽  
Fasciola Gigantica ◽  
Rice Fields ◽  
Control Options ◽  
And Control

Abstract This book chapter describes the life cycle of F. gigantica and its differences from F. hepatica, including its economic importance and control options available, with particular emphasis on the importance of the smallholder farmers and the role of rice fields in maintaining the life cycle in Southeast Asia.

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