Semi-quantitative analysis of morphological changes in bee tissues: A toxicological approach.


:During foraging, bees are exposed to sublethal doses of insecticides, which can cause morphological changes to various organs, such as the midgut, Malpighian tubules, and mushroon body. Thus, the purpose of this study was to establish a scoring system to evaluate these alterations based on the damage caused and its reversibility. Therefore, a grade 1 score indicates a minimal and easily reversible lesion, increased apocrine secretion, increased cell elimination into the lumen, and a larger quantity of spherocrystals; grade 2 was assigned to moderate and typically reversible injuries, such as changes in the brush border, vacuolation/loss of cytoplasmic material, presence/height of the brush border, and cell swelling; and grade 3 was assigned to serious and irreversible, loss of cell nests of regenerative cells, pyknosis, and loss of contact between Kenyon cells. In addition, frequency values were assigned since the alterations can occur at different frequencies according to the insecticide and the bees exposed; the frequency ranges from 0 to 6, with 0 representing the absence of an alteration and 6 representing a high-frequency occurrence. Based on the analyses, we conclude that each change causes morphological damage, which may or may not be irreversible and could affect the health of the colony.






Grella TC,Soares-Lima HM,Malaspina O,Cornélio Ferreira Nocelli R




Has Abstract


2019-12-01 00:00:00












  • Nano-mineralogy of suspended sediment during the beginning of coal rejects spill.

    abstract::Ultrafine and nanometric sediment inputs into river systems can be a major source of nutrients and hazardous elements and have a strong impact on water quality and ecosystem functions of rivers and lakes regions. However, little is known to date about the spatial distribution of sediment sources in most large scale ri...


    pub_type: 杂志文章


    authors: Civeira MS,Ramos CG,Oliveira ML,Kautzmann RM,Taffarel SR,Teixeira EC,Silva LF

    更新日期:2016-02-01 00:00:00

  • Changes in soil toxicity by phosphate-aided soil washing: effect of soil characteristics, chemical forms of arsenic, and cations in washing solutions.

    abstract::This study was set to investigate the changes in the toxicity of arsenic (As)-contaminated soils after washing with phosphate solutions. The soil samples collected from two locations (A: rice paddy and B: forest land) of a former smelter site were contaminated with a similar level of As. Soil washing (0.5 M phosphate ...


    pub_type: 杂志文章


    authors: Jho EH,Im J,Yang K,Kim YJ,Nam K

    更新日期:2015-01-01 00:00:00

  • Soil radioactivity levels, radiological maps and risk assessment for the state of Kuwait.

    abstract::An evaluation of the radioactivity levels associated with naturally occurring radioactive materials has been undertaken as part of a systematic study to provide a surface radiological map of the State of Kuwait. Soil samples from across Kuwait were collected, measured and analysed in the current work. These evaluation...


    pub_type: 杂志文章


    authors: Alazemi N,Bajoga AD,Bradley DA,Regan PH,Shams H

    更新日期:2016-07-01 00:00:00

  • Trace elements in major solid-pesticides used in the Gaza Strip.

    abstract::This study describes the purity of pesticides used in Gaza in terms of trace elements. A semi-quantitative EMMA-XRF technique and quantitative ICP/OES was used to determine the concentrations of Al, As, Ba, Br, Ca, Cd, Co, Cr, Cu, Fe, K, Mn, Ni, Pb, Rb, Sc, Se, Sr, Ti and Zn in 50 of the most commonly used solid pesti...


    pub_type: 杂志文章


    authors: Shomar BH

    更新日期:2006-10-01 00:00:00

  • Acetochlor mineralization and fate of its two major metabolites in two soils under laboratory conditions.

    abstract::The degradation of the herbicide acetochlor, in a neoluvisol and in a calcosol were studied as a function of depth (0-25cm and 25-50cm) and temperature (25 degrees C and 15 degrees C) under controlled laboratory conditions during 58 and 90 days, respectively. The surface and sub-surface soil samples were respectively ...


    pub_type: 杂志文章


    authors: Dictor MC,Baran N,Gautier A,Mouvet C

    更新日期:2008-03-01 00:00:00

  • Evaluation of pectin binding of heavy metal ions in aqueous solutions.

    abstract::Evaluation of adsorption performance of several industrially manufactured pectins towards some toxic heavy metals was carried out. Adsorption isotherms for divalent cations in simulant aqueous solutions were measured and corresponding distribution coefficients were calculated. The following selectivity sequences we fo...


    pub_type: 杂志文章


    authors: Kartel MT,Kupchik LA,Veisov BK

    更新日期:1999-05-01 00:00:00

  • Bioremediation of coal tar PAH in soils using biodiesel.

    abstract::The addition of biodiesel together with nitrate and phosphate to soil containing coal tar, in laboratory and field experiments, resulted in degradation of coal tar polycyclic aromatic hydrocarbons (PAH) that was not apparent when the nutrients alone were added. The addition of motor diesel fuel instead of biodiesel wa...


    pub_type: 杂志文章


    authors: Taylor LT,Jones DM

    更新日期:2001-08-01 00:00:00

  • Chronic exposure to environmentally-relevant concentrations of fluoxetine (Prozac) decreases survival, increases abnormal behaviors, and delays predator escape responses in guppies.

    abstract::This study evaluates the impact of fluoxetine, an antidepressant drug and common pollutant in aquatic environments, on growth, survival, and behavior in juvenile guppies and on predator escape responses in adult guppies (Poecilia reticulata). In juveniles, the effects of acute (4d) and chronic (35d) exposure on growth...


    pub_type: 杂志文章


    authors: Pelli M,Connaughton VP

    更新日期:2015-11-01 00:00:00

  • The effect of nitrogen form on rhizosphere soil pH and zinc phytoextraction by Thlaspi caerulescens.

    abstract::The phytoextraction of Zn may be improved by applying N fertilizers to increase the biomass and Zn content of shoots. Rhizosphere-pH change from uptake of different N forms will affect Zn phyto-availability in the rhizosphere and Zn phytoextraction. This glasshouse study examined the effect of N form on Zn phytoextrac...


    pub_type: 杂志文章


    authors: Monsant AC,Tang C,Baker AJ

    更新日期:2008-10-01 00:00:00

  • Voluntary GHG reduction of industrial sectors in Taiwan.

    abstract::The present paper describes the voluntary greenhouse gas (GHG) reduction agreements of six different industrial sectors in Taiwan, as well as the fluorinated gases (F-gas) reduction agreement of the semiconductor and Liquid Crystal Display (LCD) industries. The operating mechanisms, GHG reduction methods, capital inve...


    pub_type: 杂志文章


    authors: Chen LT,Hu AH

    更新日期:2012-08-01 00:00:00

  • Bisphenol A degradation in seawater is different from that in river water.

    abstract::The purpose of this study was to identify a relationship between changes of bacterial counts and bisphenol A (BPA) degradation in seawater under aerobic or anaerobic conditions, and at temperatures of 4, 25, and 35 degrees C. Water samples (seawater and river water) spiked with 1000 ng/ml of BPA was placed for 60 d. T...


    pub_type: 杂志文章


    authors: Kang JH,Kondo F

    更新日期:2005-09-01 00:00:00

  • Bioaccumulation of mercury in the pelagic food chain of the Lake Baikal.

    abstract::Mercury (Hg) concentrations were analyzed in the livers of Baikal seals and in plankton, zoobenthos and fish which constitute food items for the seals. Concentrations of Hg in the liver of Baikal seals were up to two orders of magnitude lower than those in seals inhabiting other lakes. The low levels of Hg are due to ...


    pub_type: 杂志文章


    authors: Ciesielski T,Pastukhov MV,Szefer P,Jenssen BM

    更新日期:2010-03-01 00:00:00

  • Effect of selenium on Penaeus monodon and Perna viridis: Enzyme activities and histopathological responses.

    abstract::The study was carried out to evaluate enzyme activities and histopathological changes due to the effect of acute and chronic definitive toxicity of selenium (Se) on the post larvae (PL) of giant tiger shrimp (Penaeus monodon), and green mussel (Perna viridis). The 96-h Median Lethal concentration (LC50) for the PL of ...


    pub_type: 杂志文章


    authors: Nagarjuna A,Karthikeyan P,Mohan D,Rudragouda Marigoudar S

    更新日期:2018-05-01 00:00:00

  • PCDD/PCDF from emission sources and ambient air in northeast Spain.

    abstract::PCDD/PCDF were detected and quantified in emissions from municipal and industrial waste incinerators. Levels of PCDD/PCDF in ambient air were measured in order to evaluate the possible influence. Identification and quantification were carried out by HRGC/HRMS with isotopic dilution as a quantification method using two...


    pub_type: 杂志文章


    authors: Abad E,Caixach J,Rivera J

    更新日期:1997-08-01 00:00:00

  • The roles of Brønsted acidity in low-temperature catalytic oxidation of NO over acidic zeolites with H2O2.

    abstract::In this study, low-temperature catalytic NO oxidation with H2O2 over Na- and H-exchanged Y and ZSM-5 zeolites was investigated at 140 °C which is the average exhaust temperature of coal-fired power plant. Fast catalytic NO oxidation rates were observed over H-zeolites, and catalytic activity was proportional to the am...


    pub_type: 杂志文章


    authors: Cui R,Ma S,Yang B,Li S,Li J,Pei T,Wang J,Sun S,Mi C

    更新日期:2020-07-01 00:00:00

  • Developmental exposure to Pb2+ induces transgenerational changes to zebrafish brain transcriptome.

    abstract::Lead (Pb2+) is a major public health hazard for urban children, with profound and well-characterized developmental and behavioral implications across the lifespan. The ability of early Pb2+ exposure to induce epigenetic changes is well-established, suggesting that Pb2+-induced neurobehavioral deficits may be heritable...


    pub_type: 杂志文章


    authors: Meyer DN,Crofts EJ,Akemann C,Gurdziel K,Farr R,Baker BB,Weber D,Baker TR

    更新日期:2020-04-01 00:00:00

  • Polysulfide as a novel chemical agent to solidify/stabilize lead in fly ash from municipal solid waste incineration.

    abstract::Polysulfide was produced and tested for use as an inexpensive chemical agent for the solidification/stabilization of lead in fly ash, generating little hydrogen sulfide gas. According to the equations S(n)(2-)-->S+S(n-1)(2-) and S(n)(2-)+H(+)-->HS(-)+S(n-1), this agent was expected to achieve long-term stability of di...


    pub_type: 杂志文章


    authors: Sun Y,Watanabe N,Qiao W,Gao X,Wang W,Zhu T

    更新日期:2010-09-01 00:00:00

  • Efficient natural pyrrhotite activating persulfate for the degradation of O-isopropyl-N-ethyl thionocarbamate: Iron recycle mechanism and degradation pathway.

    abstract::Natural pyrrhotite (NP) shows promising future in activating persulfate (PS) due to its easy availability at a low cost and easy separation. This study discussed the degradation of O-isopropyl-N-ethyl thionocarbamate (IPETC) in NP/PS system. NP-PS system showed the best IPETC mineralization at the initial pH of 6.0 (6...


    pub_type: 杂志文章


    authors: Wu B,Gu G,Deng S,Liu D,Xiong X

    更新日期:2019-06-01 00:00:00

  • Relative sensitivity of one freshwater and two marine acute toxicity tests as determined by testing 30 offshore E & P chemicals.

    abstract::Acute toxicity of 30 offshore E & P (Exploration and Production) chemicals was measured using the three standard test organisms Daphnia magna (freshwater cladoceran), Acartia tonsa (marine copepod) and Skeletonema costatum (marine diatom alga). Test chemicals included 20 water-soluble and 10 (partially) non-soluble pr...


    pub_type: 杂志文章


    authors: Sverdrup LE,Fürst CS,Weideborg M,Vik EA,Stenersen J

    更新日期:2002-01-01 00:00:00

  • Adsorptive removal of antibiotics from aqueous solution using carbon materials.

    abstract::Antibiotics, an important type of environmental contamination, have attracted many researchers to the study of their removal from aqueous solutions. Adsorption technology is a fast, efficient, and economical physicochemical method that is extensively used in wastewater treatment. From original activated carbon and car...


    pub_type: 杂志文章,评审


    authors: Yu F,Li Y,Han S,Ma J

    更新日期:2016-06-01 00:00:00

  • Trace metals in green sea turtles (Chelonia mydas) inhabiting two southern California coastal estuaries.

    abstract::Foraging aggregations of east Pacific green sea turtles (Chelonia mydas) inhabit the Seal Beach National Wildlife Refuge (SBNWR) and San Diego Bay (SDB), two habitats in southern California, USA, located near urbanized areas. Both juvenile and adult green turtles forage in these areas and exhibit high site fidelity, w...


    pub_type: 杂志文章


    authors: Barraza AD,Komoroske LM,Allen C,Eguchi T,Gossett R,Holland E,Lawson DD,LeRoux RA,Long A,Seminoff JA,Lowe CG

    更新日期:2019-05-01 00:00:00

  • Identification of oxidative coupling products of xylenols arising from laboratory-scale phytoremediation.

    abstract::Oxidative coupling reactions take place during the passage of xylenols through a laboratory-scale helophyte-based constructed wetland system. Typical coupling product groups including tetramethyl-[1,1'-biphenyl] diols and tetramethyl diphenylether monools as stable organic intermediates could be identified by a combin...


    pub_type: 杂志文章


    authors: Poerschmann J,Schultze-Nobre L,Ebert RU,Górecki T

    更新日期:2015-01-01 00:00:00

  • Aerobic dehalogenation potentials of four bacterial species isolated from soil and sewage sludge.

    abstract::Four bacterial species each were isolated from soil and a sewage oxidation pond using enrichment culture technique, and the bacterial isolates were identified to belong to the two genera Bacillus and Corynebacterium. The axenic cultures of the isolates utilized monochloroacetic acid (MCA), trichloroacetic acid (TCA), ...


    pub_type: 杂志文章


    authors: Olaniran AO,Babalola GO,Okoh AI

    更新日期:2001-10-01 00:00:00

  • Organochlorine pesticide accumulation in fish and catchment sediments of Lake St Lucia: Risks for Africa's largest estuary.

    abstract::Although use of organochlorine pesticides (OCPs) has been banned or severely limited on a global basis, concerning concentrations continue to be reported in many tropical and subtropical regions of the world. These habitats often support high levels of unique biodiversity and vulnerable communities that depend on the ...


    pub_type: 杂志文章


    authors: Buah-Kwofie A,Humphries MS

    更新日期:2021-01-25 00:00:00

  • Direct effects of heavy metal pollution on the immune function of a geometrid moth, Epirrita autumnata.

    abstract::Previously, we found that Epirrita autumnata larvae, which were fed with leaves that came from a metal polluted area, had an enhanced immune function. To investigate further the cause of the enhanced immunity we examined experimentally the direct influence of the heavy metals, copper and nickel, on the immune function...


    pub_type: 杂志文章


    authors: van Ooik T,Pausio S,Rantala MJ

    更新日期:2008-05-01 00:00:00

  • Denitrification of groundwater using PHBV blends in packed bed reactors and the microbial diversity.

    abstract::In the present study, three kinds of biopolymers, PHBV, PHBV/starch and PHBV/bamboo powder (BP) blends were used as carbon source and biofilm carriers for denitrification in packed bed reactors to remove nitrate from groundwater. Results showed that a fast start-up was obtained in bioreactors filled with both PHBV/Sta...


    pub_type: 杂志文章


    authors: Chu L,Wang J

    更新日期:2016-07-01 00:00:00

  • Organophosphate esters in total suspended particulates of an urban city in East China.

    abstract::Organophosphate esters (OPEs) are ubiquitous contaminants in the environment, but little is known on the occurrence and distribution of OPEs in the background atmosphere of urban environments. In this study, air samples were collected from two sites in the city of Shanghai, a typical fast developing metropolitan of Ea...


    pub_type: 杂志文章


    authors: Ren G,Chen Z,Feng J,Ji W,Zhang J,Zheng K,Yu Z,Zeng X

    更新日期:2016-12-01 00:00:00

  • Treatment of chlorinated solvents by TiO2 photocatalysis and photo-Fenton: influence of operating conditions in a solar pilot plant.

    abstract::Titanium dioxide photocatalysis (using 20 0mg l(-1) of TiO2), under aerobic and anaerobic conditions, and photo-Fenton (2 and 56 mg l(-1) iron) were applied to the treatment of different NBCS (non-biodegradable chlorinated solvents), such as dichloroethane, dichloromethane and trichloromethane dissolved in water at 50...


    pub_type: 杂志文章


    authors: Rodríguez SM,Gálvez JB,Rubio MI,Ibáñez PF,Gernjak W,Alberola IO

    更新日期:2005-01-01 00:00:00

  • Organochlorinated pesticides in sediments from the Lake Albufera of Valencia (Spain).

    abstract::Bottom sediment samples from 121 sites of the Lake Albufera of Valencia were analyzed. Dieldrin, endrin, heptachlor and op'-DDT were not detected (<0.01 ng g(-1)) in 88-93% of the sites. Aldrin and HCB concentration ranges were between <0.01 and 0.1 ng g(-1) in 86% and 94% of the sites, respectively. Heptachlor-epoxid...


    pub_type: 杂志文章


    authors: Peris E,Requena S,de la Guardia M,Pastor A,Carrasco JM

    更新日期:2005-09-01 00:00:00

  • Bioaccumulation and morphological traits in a multi-generation test with two Daphnia species exposed to lead.

    abstract::Anthropic pressure negatively affects natural environments. Lead (Pb) is a non-essential highly toxic metal that is present in aquatic ecosystems. Two daphnid species from two different latitudes, the temperate Daphnia magna and the tropical Daphnia similis were used as test-organisms to evaluate a long-term Pb exposu...


    pub_type: 杂志文章


    authors: Araujo GS,Pavlaki MD,Soares AMVM,Abessa DMS,Loureiro S

    更新日期:2019-03-01 00:00:00