Tolerance induction and life cycle changes in cadmium-exposed Chironomus riparius (Diptera) during consecutive generations

Ecotoxicology and Environmental Safety
J F Postma, C Davids

Abstract

Cultures of Chironomus riparius were exposed to cadmium during nine consecutive generations to determine whether cadmium tolerance could be induced. Selection for cadmium tolerance was assumed to influence the population dynamics of this species. Therefore, the responses and interactions of different population parameters (such as mortality, growth, and reproduction) were studied during the selection process. Exposure to cadmium during consecutive generations caused increasing effects on some life cycle parameters compared to a one-generation experiment. Tolerance to cadmium increased during exposure to 54.2 nM Cd and the tolerant population seemed to be stimulated by low cadmium concentrations (based on an acute growth experiment). Despite this tolerance development, mortality among cadmium-exposed tolerant chironomids remained high. These experiments illustrated that changes of the life cycle and tolerance can be expected as soon as single-generation NOEC values are exceeded, and in addition that "safe concentrations" based on a one-generation toxicity experiment could well underestimate the potential effects of a toxicant on midge populations.

Citations

Aug 21, 2008·Archives of Environmental Contamination and Toxicology·Christopher J SaliceG Roesijadi
May 31, 2017·Environmental Toxicology and Chemistry·Sandrine JoachimLaury Gauthier
Dec 16, 2006·The Science of the Total Environment·R PlanellóG Morcillo
Oct 10, 2013·Toxicology and Industrial Health·Amir Hossein HamidianSohrab Ashrafi
Dec 7, 2007·Bulletin of Environmental Contamination and Toxicology·V J Vedamanikam, N A M Shazilli
May 9, 2014·Substance Use & Misuse·Lyndsay Ammon AvalosDe-Kun Li
Mar 29, 2012·Journal of Environmental Monitoring : JEM·Alessandra Di VeroliEnzo Goretti
Aug 17, 2019·Evolutionary Applications·Alessandra LoriaAndrew Gonzalez
Jun 29, 2016·Environmental Toxicology and Chemistry·Ana Rita R SilvaSusana Loureiro
Aug 10, 2020·Chemosphere·Halina Binde Doria, Markus Pfenninger
Oct 12, 2012·Environmental Science & Technology·Marino MarinkovićWim Admiraal
Jun 12, 2019·Environmental Science & Technology·Christopher J Kotalik, William H Clements

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.