Disease relevance of Isopoda

• Novel bioassay based on acetylcholinesterase and lactate dehydrogenase activities to evaluate the toxicity of chemicals to soil isopods [1].

High impact information on Isopoda

• Here, we demonstrate that deep-sea isopods, gastropods, and bivalves in the North Atlantic do exhibit poleward decreases in species richness, just as those found in other environments [2].
• Since insects are the only arthropods with a derived trunk tagmosis tested to date, we examined the expression patterns of the Hox genes Antp, Ubx and abd-A in the malacostracan crustacean Porcellio scaber (Oniscidae, Isopoda) [3].
• Before the molt terrestrial isopods resorb calcium from the posterior cuticle and store it in large deposits within the first four anterior sternites [4].
• Comparative anatomy of serotonin-like immunoreactive neurons in isopods: putative homologues in several species [5].
• GATA repeats in the genome of Asellus aquaticus (Crustacea, Isopoda) [6].

Chemical compound and disease context of Isopoda

• This paper describes the toxicity of organophosphorus pesticide diazinon in juvenile and adult terrestrial isopods Porcellio scaber (Isopoda, Crustacea) [7].

Biological context of Isopoda

• Our findings indicate that terrestrial isopods have a high, noninducible capacity for biotransformation of PAHs and that the sulfate conjugation pathway is as important as the carbohydrate conjugation pathway [8].
• Divergent kinetics of hsp70 induction in Oniscus asellus (Isopoda) in response to four environmentally relevant organic chemicals (B[a]P, PCB52, gamma-HCH, PCP): suitability and limits of a biomarker [9].
• It appears from grafting experiments that the androgenic hormone (AH) of terrestrial isopods has a narrow species-specificity [J. Crust. Biol. 19 (1999) 684], even if AH of different species shared common epitopes [Gen. Comp. Endocrinol. 125 (2002) 218] [10].
• The impact of lead on food consumption, energy metabolism and the stress protein (hsp 70) level was investigated in the woodlouse Porcellio scaber (Isopoda), a common representative of the saprophagous soil macrofauna [11].

Anatomical context of Isopoda

• To do this, we have examined the distribution of serotonin (5-hydroxytryptamine)-like immunoreactive neurons in the central nervous system (CNS) of four common British isopods [5].
• As an application, conjugated pyrene metabolites in hepatopancreas samples from the terrestrial isopods Oniscus asellus and Porcellio scaber were separated and detected [12].
• The FIB/SEM system was satisfactorily used for scanning ion (SIM) and scanning electron microscopy (SEM) of gland epithelial cells of a terrestrial isopod Porcellio scaber (Isopoda, Crustacea) [13].

Associations of Isopoda with chemical compounds

• Correlation of lead or cadmium between isopods and soil irrespective of location gave significant and linear relations for both elements [14].
• The aim of this study is to link biomarkers of different levels of biological organization in isopods exposed to increasing doses of dimethoate in semifield conditions [15].
• A rapid and sublethal avoidance behaviour test was used as a screening tool with the earthworm Eisenia andrei and the isopod Porcellionides pruinosus, where organisms were exposed during 48 h to several chemicals (lindane, dimethoate and copper sulphate, for isopods and carbendazim, benomyl, dimethoate and copper sulphate for earthworms) [16].
• Isopods were exposed to a wide range of concentrations of parathion or endosulfan (0.1, 1, 10, 25, 50, 100, 250, and 500 microg/g of food) for 21 days [17].
• In some of the experiments, higher Zn, Cd and Pb, and lower Cu-contents were observed in isopods and carabids trapped with formalin-pitfalls compared to manually collected specimens (which were allowed to defecate) [18].

Gene context of Isopoda

• Time-dependent investigation of the body level of the 70 kD stress protein group (hsp70) in the isopods revealed a significant but transient induction of the hsp70 response after about 24 h of exposure to PCB52 or B[a]P [9].
• The metal was fed to the isopods on leaves of field maple (Acer campestre) contaminated with concentrations ranging between 1000 and 10,000 micrograms Zn g-1 leaf dry wt [19].
• Firstly, concentrations of total mercury and MeHg in isopods P. scaber and their environment from a Hg-unpolluted area were measured by the use of validated methods (CV AAS, CV AFS) [20].
• However, it had indicative value when related to the hsp70 response in the isopods and could be a suitable biomarker for less heavily contaminated soils [21].
• We investigated the hsp70 response in resident and transplanted isopods of the species Oniscus asellus and Porcellio scaber and the hsp60 response in transplanted nematodes of the species Plectus acuminatus in six field sites along the metal gradient [21].

References