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Cold stenothermal cave-dwelling beetles do have an HSP70 heat shock response
Authors:P Bernabò  L LatellaO Jousson  V Lencioni
Institution:a Section of Invertebrate Zoology and Hydrobiology, Museo Tridentino di Scienze Naturali, Via Calepina 14, 38122 Trento, Italy
b Section of Zoology, Museo Civico di Storia Naturale di Verona, Via Lungadige Porta Vittoria 9, 37129 Verona, Italy
c Centre for Integrative Biology, University of Trento, Via delle Regole 101, 38123 Trento, Italy
Abstract:The response to high temperatures in adults of two cold stenothermal cave-dwelling leptodirins, Neobathyscia mancinii and Neobathyscia pasai (Coleoptera, Cholevidae) was evaluated by determinating levels of gene expression of two members of the family of heat shock proteins 70 kDa by qPCR. In both species, hsc70 mRNA level was constant with increasing temperature, whereas a significant increase in the inducible member (hsp70) mRNA was observed, higher in N. pasai. This difference could be due to their in-cave distribution: N. pasai colonizes the cave entrance where the temperature is more variable than the internal part where N. mancinii is confined. These results demonstrated for the first time the occurrence of a heat shock response in troglobite insects and suggest the correlation between the intensity of this response and the adaptation to the cave environment.
Keywords:Cold stenothermal  Heat shock proteins  Neobathyscia mancinii  Neobathyscia pasai  Thermal stress
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