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Julien Saada Olivier Parant Sylvie Kessler Jacqueline Aziza Marie France Sarramon 《黑龙江环境通报》2006,26(1):9-10
Congenital splenic cyst (CSC) is a rare condition, and only a few cases with prenatal diagnosis and no associated malformation have been reported. Spontaneous regression is possible in case of mild CSC (under 40 mm), but enlargement or secondary complications may lead to surgical treatment. We report, herein, two cases of isolated mild CSC with complete spontaneous postnatal regression. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
123.
Marguerite Hureaux Sarah Guterman Bérénice Hervé Marianne Till Sylvie Jaillard Sylvie Redon Myléne Valduga Charles Coutton Chantal Missirian Fabienne Prieur Brigitte Simon-Bouy Claire Beneteau Paul Kuentz Caroline Rooryck Nicolas Gruchy Nathalie Marle Morgane Plutino Lucie Tosca Celine Dupont Jacques Puechberty Caroline Schluth-Bolard Laurent Salomon Damien Sanlaville Valérie Malan François Vialard 《黑龙江环境通报》2019,39(6):464-470
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Summary. Most dung beetles colonize the faeces of several vertebrate species without much discrimination, and are thus often considered
as polyphagous. Recent studies have provided evidence for clear feeding preferences in scarab beetles colonizing dung of herbivore
species, but little is known about these insects’ abilities to discriminate among odours from faeces of various herbivores.
In this study, trophic preferences were examined using blocks of pitfall traps baited with dung from four different herbivore
species, i.e., sheep, cattle, horse, and red deer, in a mountainous area of south-central France. 4941 coprophagous scarabs,
belonging to 27 species, were captured. Beetles were more attracted to dung of sheep (2257 individuals) than that of cattle
(1294 individuals), followed by deer dung (768 individuals) and horse dung (622 individuals). Eleven of the 27 beetle species
collected had significant feeding preferences for one of the four dung types. For each insect species, trophic habits did
not vary between the two different sites of trapping, an open pasture and a wooded habitat. In laboratory olfactometer bioassays,
scarab beetles orientated preferentially towards the dung volatiles from the dung type they preferred in the field. Trypocopris pyrenaeus, Anoplotrupes stercorosus, and Aphodius rufipes were more attracted to volatile compounds from sheep dung, Onthophagus fracticornis significantly preferred horse dung volatiles, and Aphodius haemorrhoidalis responded positively to deer dung odours. The role of dung olfactory cues in the process of resource selection by dung beetles
is discussed. 相似文献
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Jelena Cvejic Sylvie Tambutte Severine Lotto Momir Mikov Ivan Slacanin Denis Allemand 《Marine Biology》2008,154(5):931-932
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Metallothioneins (MTs), are low molecular weight proteins, mainly implicated in metal ion detoxification. Increase in MT contents is considered as a specific biomarker of metal exposure. Recently it has been demonstrated that MTs participate in several cellular functions such as regulation of growth, and antioxidative defences. Tubifex tubifex were exposed to different copper concentrations (50, 100, and 200 microgl(-1)) for 7 and 15 days. MT levels in exposed worms increased significantly (p<0.05) after 7 and 15 days of exposure to different concentrations of copper (maximum +208% for 100 microgl(-1) after 7 days of exposure). Also important perturbation in metal-metallothionein content occurred, along with an increase in total soluble protein content in all treated worms after 7 and 15 days (max. +88.49%). Catalase activities (CAT) in Cu treated-worms were significantly increased, and demonstrated a development of antioxidative defenses. Additionally a reduction of gulathione-S-transferase (GST) was observed in all treated worms after 7 days of exposure to Cu (max. -44.42%). The high induction of MTs observed during T. tubifex exposure to Cu make them potentially useful biomarkers to monitor metal pollution. 相似文献
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Naturally occurring kind of weathered and oxidised young brown coal called oxihumolite was used for an adsorptive removal of basic (Methylene Blue, Malachite Green) as well as acid (Egacid Orange, Midlon Black) dyes from waters. It was shown that both kinds of dyes can be sorbed onto oxihumolite. The maximum sorption capacities determined from the parameters of Langmuir isotherms ranged from 0.070 mmol g-1 (for Midlon Black) to 0.278 mmol g-1 (for Malachite Green) and did not differ significantly for basic and acid dyes. The dye sorption (except of Midlon Black) increased in the presence of inorganic salt. Non-ionic surfactants, and surfactants bearing the same charge as the dye exhibited only a minor effect on the dye sorption, whereas oppositely charged surfactants enhanced the dye sorption to a certain extent. The pH value of the aqueous phase exhibited rather pronounced effect on the sorption of acid dyes causing a suppression of the sorption with increasing pH. The sorption of basic dyes, on the other hand, remained almost unchanged in the examined pH range. Oxihumolite is recommended for the treatment of acid wastewaters because of its limited stability in alkaline aqueous solutions. 相似文献