caa a22 4500 469061294 CHVBK 20180323132858.0 cr unu---uuuuu 170328e19920801xx s 000 0 eng 10.1007/BF01275523 doi (NATIONALLICENCE)springer-10.1007/BF01275523 The respiratory system of the female Varroa jacobsoni (Oudemans): its adaptations to a range of environmental conditions [Elektronische Daten] [P. Pugh, P. King, M. Fordy] The morphology of the respiratory system of the femaleVarroa jacobsoni (Oudemans, 1904) is described. The mobile, appendage-like, emergent peritreme may be ‘raised' to lie against the ventral integument or ‘lowered' between the third and fourth pair of legs. It is ‘raised' when the mite is submerged in the liquid food of the host's brood chamber, where respiration occurs via an external plastron, formed by an airfilm trapped between the rough cuticle of the ventral integument and the retracted legs. The peritreme is also raised when the mite is outside the hive in sub-saturated air, to reduce water vapour transpiration, and it is ‘lowered' in the carbon-dioxide-rich and water-saturated hive atmosphere, where it facilitates rapid removal of carbon dioxide. Thus gaseous exchange in the female mites may be adjusted by the position of the peritreme. Elsevier Science Publishers B.V, 1992 Pugh P. Terrestrial and Freshwater Life Sciences Division, British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, CB3 0ET, Cambridge, UK aut King P. School of Biological Sciences, University College of Swansea, Swansea, West Glamorgan, UK aut Fordy M. School of Biological Sciences, University College of Swansea, Swansea, West Glamorgan, UK aut Experimental & Applied Acarology Kluwer Academic Publishers 15/2(1992-08-01), 123-139 0168-8162 15:2<123 1992 15 10493 https://doi.org/10.1007/BF01275523 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01275523 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pugh P. Terrestrial and Freshwater Life Sciences Division, British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, CB3 0ET, Cambridge, UK aut NATIONALLICENCE 700 1- King P. School of Biological Sciences, University College of Swansea, Swansea, West Glamorgan, UK aut NATIONALLICENCE 700 1- Fordy M. School of Biological Sciences, University College of Swansea, Swansea, West Glamorgan, UK aut NATIONALLICENCE 773 0- Experimental & Applied Acarology Kluwer Academic Publishers 15/2(1992-08-01), 123-139 0168-8162 15:2<123 1992 15 10493 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer