scholarly journals Uma breve revisão sobre a utilização de abelhas como bioindicadores de contaminação ambiental: Ênfase na Apis mellifera L.

2021 ◽  
Vol 9 (3) ◽  
pp. 204-210
Author(s):  
Irineu Ferreira da Silva Neto ◽  
Maria Beatriz Silva Duarte ◽  
Maria Aparecida Dias Fernandes Canuto ◽  
Annalu Moreira Aguiar

A antropização generalizada e várias atividades humanas estão degradando o meio ambiente com intensidade crescente. Dessa forma, diferentes espécies de animais foram recentemente consideradas como bioindicadores de contaminação ambiental, em função da sua capacidade indicativa. Assim, o estudo desenvolvido possui como principal objetivo a verificação da capacidade e do grau de utilização de abelhas (Apis mellifera L.) como bioindicadores de contaminação ambiental, através de uma revisão de literatura, nas seguintes bases de dados: SciELO, PubMed e Google Scholar, utilizando os Descritores em Ciências da Saúde (DeCS): Apis mellifera, Biomarcadores ambientais “Environmental Biomarkers”, Toxicologia “Toxicology”, e Poluentes ambientais “Environmental Pollutants”, combinados pelo operador booleano “AND”. O período de publicações delimitado pelo estudo compreende desde o ano de 2015 até setembro de 2020, utilizando dados encontrados no idioma português ou inglês. Foram incluídos estudos disponíveis na íntegra, obtidos através da opinião de especialistas, os quais foram publicados em periódicos renomados. De acordo com a avaliação dos estudos coletados, pode-se verificar a existência de um cenário favorável para a aplicação de abelhas enquanto bioindicadores ambientais, sendo um dos fatores essenciais a diversidade do material amostrado por este tipo de animal, uma vez que, o processo de amostragem realizado acaba sendo bastante significativo e representativo, porém, em contrapartida, ainda se faz bastante perceptível às fragilidades que este tipo de amostragem pode vir a apresentar. É válido salientar que o estudo prévio da espécie que será utilizada, assim como da região a qual se pretende analisar, é indispensável para que se tenha uma coleta de dados mais apurada.

2021 ◽  
Vol 42 ◽  
pp. e49
Author(s):  
Franciéli Possa Da Rosa ◽  
Ledieli Belmonte Soares ◽  
Cássio Marques Resmim ◽  
Maíne Gavioli Boff ◽  
Luana Passamani De Moraes ◽  
...  

Beehive products, including honey, are valuable environmental indicators, as bees transport compounds in the environment by transferring them to the hive. Environmental pollutants can reduce the quality of honey and represent a risk for consumers. In this work, we characterised honey samples of Apis mellifera from different cities of the Rio Grande do Sul state (southern Brazil), sold without any inspection. A total of 23 honey samples were collected from 11 cities of Rio Grande do Sul. We carried out Lugol’s and Lund’s tests, analysed the electrical conductivity (EC), pH, and acidity of the honey samples, and determined their moisture, ash, reducing sugar, apparent sucrose, hydroxymethylfurfural (HMF), and diastase contents. Energy-dispersive X-ray fluorescence analysis was performed to determinate the mineral profile of the samples. Principal component analysis (PCA) was applied to the physicochemical data in order to differentiate the honey samples based on their origin. The analysis of the physicochemical parameters indicated that seven samples (30.4%) showed deviations from the reference values. PCA accounted for 90.03% of the variance with the first four principal component variables. Most samples were separated by the city of origin, supporting the possibility of using honey as an environmental marker.


2019 ◽  
Vol 9 (33) ◽  
pp. 21-26
Author(s):  
Nuray Bayar Muluk

Abstract OBJECTIVES. The aim of this paper is to review the united airway concept. MATERIAL AND METHODS. We searched Pubmed, Google, Google Scholar and Proquest Central database of Kırıkkale University. RESULTS. Upper and lower airways are thought as a morphological and functional unit. There is a link between rhinitis and asthma. Over 80% of asthmatics have rhinitis and 10-40% of rhinitis patients have asthma. Rhinosinusitis is related to asthma in 34-50% of the patients. The relationship between rhinosinusitis and asthma may include “nasobronchial reflex, pharyngobronchial reflex, inhalation of dry, cold air and environmental pollutants inhalation”. CONCLUSION. The united airway concept suggests that upper and lower airways are thought as a morphological and functional unit. It has been commonly accepted in recent years. Allergic rhinitis (AR) is a risk factor for asthma; and Allergic Rhinitis and Asthma (ARIA) suggest bronchial involvement in AR patients.


Author(s):  
D.N. Collins ◽  
J.N. Turner ◽  
K.O. Brosch ◽  
R.F. Seegal

Polychlorinated biphenyls (PCBs) are a ubiquitous class of environmental pollutants with toxic and hepatocellular effects, including accumulation of fat, proliferated smooth endoplasmic recticulum (SER), and concentric membrane arrays (CMAs) (1-3). The CMAs appear to be a membrane storage and degeneration organelle composed of a large number of concentric membrane layers usually surrounding one or more lipid droplets often with internalized membrane fragments (3). The present study documents liver alteration after a short term single dose exposure to PCBs with high chlorine content, and correlates them with reported animal weights and central nervous system (CNS) measures. In the brain PCB congeners were concentrated in particular regions (4) while catecholamine concentrations were decreased (4-6). Urinary levels of homovanillic acid a dopamine metabolite were evaluated (7).Wistar rats were gavaged with corn oil (6 controls), or with a 1:1 mixture of Aroclor 1254 and 1260 in corn oil at 500 or 1000 mg total PCB/kg (6 at each level).


Author(s):  
Maria Anna Pabst

In addition to the compound eyes, honeybees have three dorsal ocelli on the vertex of the head. Each ocellus has about 800 elongated photoreceptor cells. They are paired and the distal segment of each pair bears densely packed microvilli forming together a platelike fused rhabdom. Beneath a common cuticular lens a single layer of corneagenous cells is present.Ultrastructural studies were made of the retina of praepupae, different pupal stages and adult worker bees by thin sections and freeze-etch preparations. In praepupae the ocellar anlage consists of a conical group of epidermal cells that differentiate to photoreceptor cells, glial cells and corneagenous cells. Some photoreceptor cells are already paired and show disarrayed microvilli with circularly ordered filaments inside. In ocelli of 2-day-old pupae, when a retinogenous and a lentinogenous cell layer can be clearly distinguished, cell membranes of the distal part of two photoreceptor cells begin to interdigitate with each other and so start to form the definitive microvilli. At the beginning the microvilli often occupy the whole width of the developing rhabdom (Fig. 1).


1966 ◽  
Vol 05 (04) ◽  
pp. 167-171 ◽  
Author(s):  
L. E. Faer

Developments of disease hypotheses and conceptions of disease as philosophic entities have shown bursts of great advance. One just concluded includes emergence of bacteriology and virology culminating in Koch’s Postulates, which in the twentieth century were primary bases for disease study and colored all approaches to medicine.With recent extraordinary advances in technology, medicine faces great new obligations demanding fresh approaches and untrammeled thinking for solution of problems posed. It is clear that any approach to diseases and disabilities induced by exposures to environmental pollutants must take multiple etiology into account. For example, contributing to causation of lung malignancies one must list usual dusts, radioactivity, smog, auto exhausts, cigarette smoke and genetic composition. Consideration of plural factors in genesis of environmentally associated disease leads to the hypothesis of the incremental insult, a complex and difficult conception in which must be included provision for multiple causative agents, each contributing but a fraction toward total etiology^ Computers developed to their present refinement provide necessary tools for whatever complexity required to spawn and fructify hypotheses of inter-relating associations of incremental insults leading to pathology.


2016 ◽  
Vol 51 (2) ◽  
pp. 156-171
Author(s):  
А.В. СПРЫГИН ◽  
◽  
Ю.Ю. БАБИН ◽  
Е.М. ХАНБЕКОВА ◽  
Л.Е. РУБЦОВА ◽  
...  

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