Larvae of related Diptera species from thermally contrasting habitats exhibit continuous up‐regulation of heat shock proteins and high thermotolerance

• DOI: 10.1111/j.1365-294x.2008.03947.x
• Publication Date: 2008-11-04T19:02:48Z
• Authors: DAVID G. GARBUZ; OLGA G. ZATSEPINA; ANDREY A. PRZHIBORO; IRINA YUSHENOVA; IRINA V. GUZHOVA; MICHAEL B. EVGEN’EV
• Keywords: Thermal shock; Environmental factor

Abstract A population of Stratiomys japonica , a species belonging to the family Stratiomyidae (Diptera), common name ‘soldier flies’, occurs in hot volcanic spring, which is apparently among most inhospitable environments for animals because chemical and thermal conditions. Larvae this species, naturally often experience temperatures more than 40 °C, have constitutively high concentrations normally inducible heat‐shock protein Hsp70, but very low level corresponding mRNA. three other same family, singularior Nemotelus bipunctatus Oxycera pardalina are confined different type semi‐aquatic habitats with contrasting regime. However, all them shared pattern Hsp70 expression. Interestingly, treatment S. larvae activates factor significantly induces synthesis, whereas O. from constant cold environment, produce less response heat shock. Adults four also exhibit lower, detectable levels without studied tolerance temperature stress comparison Diptera investigated, probably representing an inherent adaptive feature enabling successful colonization highly variable extreme habitats.