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doi:10.1242/jeb.213744 RESEARCH ARTICLE Thermal stress causes DNA damage and mortality in a tropical insect ABSTRACT Cold tolerance is considered an important factor determining the geographic distribution of insects.
• Other articles in this volume • Top cited articles • Top downloaded articles • Our comprehensive search Insects in Fluctuating Thermal Environments Herv´e Colinet,1,∗ Brent J.
a response by which tolerance to one stress can enhance tolerance to another stress, may contribute to the invasive success of some alien insects.
Frequent exposure of terrestrial insects to temperature variation has thus led to the evolution of protective biochemical and physiological mechanisms.
doi:10.1242/jeb.164806 COMMENTARY Mechanisms underpinning the beneficial effects of fluctuating thermal regimes in insect cold tolerance ABSTRACT Insects exposed to low temperature often have high mortality or exhibit sublethal effects.
Perturbations in central metabolism appear to be a common physiological response in insects exposed to low temperatures.
Received 27 May 2011 Accepted 15 July 2011 Available online 22 July 2011 Exposing insects to a ﬂuctuating thermal regime (FTR) compared with constant low temperature (CLT) signiﬁcantly reduces cold-induced mortality.
Introduction Mass production of beneﬁcial insects has long been considered necessary for biological control programs, especially those based on augmentative releases (van Lenteren and Tommasini, 2002).
Insects from both temperatures were also exposed to constant or ﬂuctuating cold-exposure.
Parasitoid species are insects attacking other arthropods in the egg, larval or pupal developmental stages.
The mechanisms underlying chilling injuries and the subsequent recovery phase are only beginning to be understood in insects.
These insects are most valuable for their ability to pollinate, which gives the us variations in plant life.
Insect coaches claim that their activity provides a free pastime while drawing attention upon insects that would otherwise have been ignored or just killed as pests.
In insects, this process has been widely examined for heat stress, but the response to cold stress has been far less studied.
October 18, 2016 Abstract Temperature directly affects survival, development and reproduction in insects and thereby it is a key environmental driver for geographic distribution and population dynamics.
The molecular mechanisms that govern extreme dehydration tolerance in insects remain largely undeﬁned.
However, previous studies conducted on insects exposed to nonfreezing low temperatures presented conﬂicting results.
KEY WORDS low temperature, cold hardiness, survival, water relations, fat reserves OUR UNDERSTANDING OF THE responses of insects to low temperatures has progressed substantially (Ramløv 2000, Sinclair et al.
Introduction Many ectotherms including insects have to cope with cold periods during their lifetime, and this may have strong consequences on their ﬁtness, which in turn can contribute to determine their geographical distribution (Bale, 2002;