tailieunhanh - báo cáo khoa học: "Subcuticular microstructure of the hornet's gaster: Its possible function in thermoregulation"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Subcuticular microstructure of the hornet's gaster: Its possible function in thermoregulation | Journal of Nanobiotechnology BioMed Central Research Open Access Subcuticular microstructure of the hornet s gaster Its possible function in thermoregulation Jacob S Ishay 1 Vitaly Pertsis1 Arnon Neufeld2 and David J Bergman3 Address department of Physiology and Pharmacology Sackler Faculty of Medicine Tel Aviv University Tel Aviv 69978 Israel 2School of Chemistry Raymond and Beverly Sackler Faculty of Exact Sciences Tel Aviv University Tel Aviv 69978 Israel and 3School of Physics and Astronomy Raymond and Beverly Sackler Faculty of Exact Sciences Tel Aviv University Tel Aviv 69978 Israel Email Jacob S Ishay - physio7@ Vitaly Pertsis - physio7@ Arnon Neufeld - arnonn@ David J Bergman - bergman@ Corresponding author Received 31 October 2003 Accepted 1 1 January 2004 Published 11 January 2004 Journal of Nanobiotechnology 2004 2 1 This article is available from http content 2 1 1 2004 Ishay et al licensee BioMed Central Ltd. This is an Open Access article verbatim copying and redistribution of this article are permitted in all media for any purpose provided this notice is preserved along with the article s original URL. Abstract The present study set out to elucidate the structure and function of the large subcuticular air sacs encountered in the gaster of the Oriental hornet Vespa orientalis Hymenoptera Vespinae . Gastral segments I II III together with the anterior portion of segment IV comprise the greater volume of the gaster and inside them beneath the cuticle are contained not only structures that extend throughout their entire length like the alimentary canal and the nerve cord with its paired abdominal ganglia situated near the cuticle in the ventral side but also the heart which is actually a muscular and dorsally located blood vessel that pumps blood anteriorly toward the head of the hornet. The mentioned structures take up only a small volume of the gaster while the rest is .