Abstract：
:Chironomid mouthpart deformities and aberrations of their polytenic chromosomes are sublethal responses to toxic stress. These endpoints have been used in several cases as bioindications for sediment pollution. In the present study we aimed to establish whether there was an association between mouthpart deformities and nucleolus activity in the polytenic chromosomes. Such information could be useful to gain insight into the mechanisms involved in the occurrence of mouthpart deformities and their consequences on the larvae. Third-instar larvae of Chironomus riparius were collected at a site downstream of a sewage treatment plant mostly contaminated by pesticides. Larvae were then raised in the laboratory in aquaria containing sediment and water from the study location. During a 16-day period, larvae ready to molt to the fourth instar were reared individually. Within a few hours of their molt, the larvae were preserved. The presence of mouthpart deformities (mentum, mandibles, and pecten epipharyngis) and the percentage of active nucleoli were assessed. Those larvae presenting mentum deformities had a significantly higher incidence of active nucleoli in their polytenic chromosomes than nondeformed larvae. Because a high number of active nucleoli generally indicates increased rRNA synthesis, deformed larvae seemed to exhibit a higher protein synthesis than normal individuals. The synthesis of additional proteins may increase deformed larva tolerance to toxicants.
journal_name
Arch Environ Contam Toxicoljournal_title
Archives of environmental contamination and toxicologyauthors
Meregalli G,Bettinetti R,Pluymers L,Vermeulen AC,Rossaro B,Ollevier Fdoi
10.1007/s00244-001-0040-3subject
Has Abstractpub_date
2002-05-01 00:00:00pages
405-9issue
4eissn
0090-4341issn
1432-0703journal_volume
42pub_type
杂志文章abstract：:Human natural killer (NK) cells are lymphocytes that destroy tumor and virally infected cells. Previous studies have shown that exposure of NK cells to tributyltin (TBT) greatly diminishes their ability to destroy tumor cells (lytic function) while activating mitogen-activated protein kinases (MAPK) (p44/42, p38, and ...
journal_title：Archives of environmental contamination and toxicology
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doi：10.1007/s00244-010-9520-7
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abstract：:Aquatic insects are an important component of the food web in salt marshes, therefore it is necessary to test whether pesticides used to control mosquitoes in salt marshes are safe for nontarget insects. We tested the nontarget effects of a combined formulation (duplex) of Bacillus thuringiensis israelensis (B.t.i.) a...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/s002440010094
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abstract：:Parasitoids are key species involved in the regulation of natural populations. Host parasitization is realized via some important steps in which kairomone perception is essential. Due to the wide use of insecticides and their contribution to environmental pollution, the determination of their sublethal effects on beha...
journal_title：Archives of environmental contamination and toxicology
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doi：10.1007/s002440010269
更新日期：2001-11-01 00:00:00
abstract：:During the last decades, the Berre lagoon, located in southeastern France, has been deeply affected by strong contaminant inputs. Surveys of surface sediment contamination have been sparsely performed since 1964 with data often disconnected with regard to time and space. To contribute to filling this gap, this study e...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/s00244-013-9915-3
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abstract：:The activity of the enzyme delta-aminolevulinic acid dehydratase (ALA-D) was strongly depressed in erythrocytes, spleen and renal tissue of rainbow trouts (Salmo gairdnerii) exposed to sublethal levels of inorganic lead (10, 75 and 300 microgram Pb2+/L) for 30 days. The fish exposed to the highest lead concentration a...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/BF01056348
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abstract：:To identify the best material (soil or dust) to be selected for health-risk assessment studies, road dust and urban soil from three cities with different population densities were collected, and size fractions were analysed for metal content (Pb, Zn, Cu, Cd, Cr, Co, and Ni). Results showed similar distribution of the ...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/s00244-017-0413-x
更新日期：2017-10-01 00:00:00
abstract：:Channel catfish (Ictalarus punctatus) were exposed to 0, 10, 20, and 40% bleached kraft pulp and paper mill effluent (BKME) for up to two weeks. Fish were sacrificed on days 1, 3, 7, and 14 of exposure. Blood, liver, and gill tissues were assayed for biochemical responses associated with oxidative stress (superoxide d...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/BF01064409
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journal_title：Archives of environmental contamination and toxicology
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doi：10.1007/BF01055189
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journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/s00244-014-0053-3
更新日期：2014-11-01 00:00:00
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journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/s002449900506
更新日期：1999-08-01 00:00:00
abstract：:The effect of pyrene on the regulation of the gene expression of cytochrome P4501A ( CYP1A) was studied in tilapia (Oreochromis niloticus), a tropical fish of great ecological and economical importance. To evaluate CYP1A mRNA, tilapia CYP1A cDNA was cloned, sequenced, and compared with those CYP1A reported sequences i...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/s00244-001-0018-1
更新日期：2002-05-01 00:00:00
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journal_title：Archives of environmental contamination and toxicology
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更新日期：2019-02-01 00:00:00
abstract：:Substances derived from anthropogenic activities induce changes in the physical and chemical characteristics of the aquatic environment. Physicochemical and biological studies are necessary to understand how changes in landscape affect the health of the aquatic environment. The main goal of this study was to evaluate ...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/s00244-018-00593-7
更新日期：2019-04-01 00:00:00
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journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/s00244-004-0208-8
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journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/s00244-010-9492-7
更新日期：2010-10-01 00:00:00
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journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/s002449900244
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abstract：:Freshwater macroinvertebrate communities were established within 12 artificial streams or "toroidal" mesocosms and exposed to three replicated concentrations of ammonia for 29 days at constant temperature (16 degrees C) and pH (median 8.4). The criterion units (CU = measured [ammonia]/US EPA 1985 chronic criterion val...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/s002449900523
更新日期：1999-10-01 00:00:00
abstract：:Mercury (Hg) used in gold amalgamation is a major source of contamination in developing countries. Water, sediments, plankton, fish, and human samples from Grande Marsh, a Hg-polluted marsh located in the south of Bolívar, municipality of Montecristo, Colombia, were collected during both the rainy and the dry seasons ...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/s00244-007-9129-7
更新日期：2008-08-01 00:00:00
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journal_title：Archives of environmental contamination and toxicology
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doi：10.1007/s002449900249
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journal_title：Archives of environmental contamination and toxicology
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doi：10.1007/s002449900467
更新日期：1999-04-01 00:00:00
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journal_title：Archives of environmental contamination and toxicology
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doi：10.1007/BF00212372
更新日期：1996-08-01 00:00:00
abstract：:A life table response experiment (LTRE) was used to quantify the population-level effects of continuous, multigeneration cadmium exposure on two strains of the freshwater gastropod, Biomphalaria glabrata: the parasite-resistant BS90 and parasite-susceptible NMRI strains. Snails were exposed to waterborne cadmium for t...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/s00244-008-9203-9
更新日期：2009-05-01 00:00:00
abstract：:Three different diets amended with lead (Pb) nitrate Pb(NO3)2 (7, 77, and 520 microg Pb/g dry weight) and a Pb-free control diet (0.06 microg Pb/g dry weight) were fed to juvenile freshwater rainbow trout for 21 days. Accounting for measured food consumption, the calculated doses per fish were 0.02, 3.7, 39.6, and 221...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/s00244-005-0212-7
更新日期：2006-11-01 00:00:00
abstract：:This study established the influence of dietary neomycin sulphate on the rate of hydrolysis of ochratoxin A (OA) by digesta from the intestine, and its effect on the excretion of OA and its hydrolyzed metabolite, alpha ochratoxin (O alpha), in the urine and feces of the rat. The first in vitro study demonstrated that ...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/BF00203811
更新日期：1992-11-01 00:00:00
abstract：:Pilot whales strand periodically along the U.S. coast, and these strandings offer an opportunity for the collection of tissues for biomonitoring of contaminant exposure in cetaceans, as well as for specimen archiving. Concentrations of organochlorine (OC) contaminants (e.g., PCB congeners, pesticides, DDTs) were measu...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/s002449900497
更新日期：1999-07-01 00:00:00
abstract：:A test battery, composed of a range of biological assays, was applied to evaluate the ecological health of soil aged for 69 days and spiked with a range of pyrene levels (1.04, 8.99, 41.5, 72.6, 136, and 399 μg g(-1) dry soil; Soxhlet-extracted concentrations after 69 days of aging). Chinese cabbage (Brassica rapa), e...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/s00244-012-9793-0
更新日期：2012-11-01 00:00:00
abstract：:Contaminants entering aquatic systems from agricultural, industrial, and municipal activities are generally sequestered in bottom sediments. The environmental significance of contaminants associated with sediments dredged from Savannah Harbor, Georgia, USA, are unknown. To evaluate potential effects of contaminants in...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/s002449910016
更新日期：2000-01-01 00:00:00
abstract：:Among the painters handling polyurethane varnish in two furniture manufacturing factories with high toluene diisocyanate (TDI) exposure (0.79 mg/m3 and 0.31 mg/m3), 26.3% and 15% subjects, respectively displayed asthmatic symptoms, lung function loss, and an increment in mast cell degranulation percentage specific to ...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/BF01183884
更新日期：1991-11-01 00:00:00
abstract：:The fate of TCDD (2,3,7,8-tetrachlorodibenzo-p-dioxin) was studied by using aquatic sediment and lake water under laboratory conditions. Most of the TCDD was found in the sediment from which it slowly disappeared. Evaporation may be a major mode of disappearance of TCDD in samples incubated 39 days or more, with metab...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/BF02332062
更新日期：1978-01-01 00:00:00
abstract：:Surface residue disappearance rates of dioxathion, malathion, oxydemetonmethyl, and dialifor were the same for fruit and leaves, and they increase with temperature. Disappearance rates were in the order of malathion greater than or equal to oxydemetonmethyl greater than dialifor greater than or equal to dioxathion. Ma...
journal_title：Archives of environmental contamination and toxicology
pub_type： 杂志文章
doi：10.1007/BF01055445
更新日期：1981-07-01 00:00:00
