Cadmium-induced changes of gypsy moth larval mass and protease activity
2014
Autori:
Vlahović, MilenaIlijin, Larisa
Lazarević, Jelica
Mrdaković, Marija
Grčić, Anja
Matić, Dragana
Perić Mataruga, Vesna
Tip dokumenta:
Članak u časopisu (Objavljena verzija)
,
© 2013 Elsevier Inc.
Metapodaci
Prikaz svih podataka o dokumentuApstrakt:
Cadmium uptake takes place mainly through food. Lymantria dispar larvae
were exposed to dietary cadmium in concentrations of 10 and 30 μg Cd/g
dry food (NOEC, no-observed-effect and LOEC, lowest-observed-effect
concentration, respectively) for acute and chronic treatment and
recovery. We established that metal contamination decreased mass only
during the chronic treatment at 30 μg Cd/dry food with no recovery on
removal of cadmium for 3 days. Significant reduction of protease
activity was detected at LOEC after the acute and chronic treatments.
Protease showed enhanced plasticity with regard to the fitness trait
(mass) during environmental stress and the higher cadmium load, when it
changed. The statistically significant higher index of phenotypic
plasticity for protease correlated with lower variability. Protease
isoforms at the same cadmium treatments differed between genotypes,
while some protease isoforms from one egg-mass differed between cadmium
treatments. Owing to the low sensitivity and plasticity of mass change
during exposure to cadmium, as well as its small influence, we concluded
that larval mass is not a good indicator of cadmium presence in food. We
suggest that proteases, with further research, might be a suitable
indicator of dietary cadmium contamination, as well as nutriment
utilization during heavy metal stress.
Ključne reči:
Acute and chronic stress; Cadmium; Enzyme isoforms; Gypsy moth; Larval mass; ProteaseIzvor:
Comparative Biochemistry and Physiology C-Toxicology & Pharmacology, 2014, 160, 1, 9-14Finansiranje / projekti:
- Karakterizacija i primena metabolita gljiva i utvrđivanje potencijala novih biofungicida (RS-MESTD-Basic Research (BR or ON)-173032)
DOI: 10.1016/j.cbpc.2013.11.002
ISSN: 1532-0456