English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The objective of this study was to establish the major features of respiratory gas exchange in unfed adults of the ticks Amblyomma hebraeum and A. marmoreum, both vectors of heartwater in Southern Africa. Carbon dioxide emission of ticks was measured at 25 degrees C using flow-through respirometry in order to determine standard metabolic rate (SMR) and the temporal pattern of gaseous emission. For both species, SMR was extremely low and approximately 100 fold less than that predicted for an insect of equivalent body mass. Ventilation in inactive ticks was discontinuous and characterized by periodic bursts of CO2 emissions during spiracular opening. The main selective advantage of this type of ventilation is believed to lie in a reduction of respiratory water loss. The periodicity of CO2 bursts was less frequent in A. marmoreum (every 2.5 h) compared to A. hebraeum (every 1.5 h) suggesting that A. marmoreum is more efficient at conserving respiratory water loss. It is suggested that future research into water balance physiology of ticks should address the role of ventilatory patterns in determining off-host survival and habitat associations.

revue d'élevage et de médecine vétérinaire des pays tropicaux/revue d'élevage et de médecine vétérinaire des pays tropicaux

Ventilation chez les adultes d’&lt;em&gt;Amblyomma hebraeum&lt;/em&gt; et &lt;em&gt;A. marmoreum&lt;/em&gt; (Acarina, Ixodidae), vecteurs de la cowdriose en Afrique australe