Chicks and ticks

wadertales

How do ticks affect Golden Plover chicks? pic chick on moveBy utilising data from an existing study, David Douglas and James Pearce-Higgins have discovered that Golden Plover chicks that carry more sheep-ticks Ixodes ricinus have a lower chance of survival. Their findings are written up as a paper in Bird Study. The work is only based on a small sample and the data don’t identify the mechanism that leads to increased mortality but, given the current interest in the biological effects of ticks, the findings are interesting.

Costs of carrying ticks

Carrying ticks has three potential effects on wader chicks

  • Ticks suck blood, which could be costly.
  • Ticks can introduce diseases, via tick-borne bacteria and viruses.
  • There may be effects on feeding efficiency, via impaired vision, hearing etc.

Sheep ticks act as vectors for a variety of pathogens, including the louping ill virus (LIV) which can affect a range of domestic and…

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