April 25, 2015

Willow–carrot aphid at Wellesbourne

The suction trap at Wellesbourne caught the first winged willow-carrot aphid of 2015 (see below) - somewhat earlier than the average date and also earlier than expected from the day-degree forecast. Further investigation revealed that our overwintered carrots (retained to maintain the carrot fly population) are heavily infested with aphids which must have overwintered on the crop rather than as eggs on willow. This infestation may have been the source of the early winged aphid! The image shows lots of cast aphid 'skins' - which are more visible than the aphids.

img_0145.jpg

The presence of the aphids has also 'attracted' quite a large number of hungry ladybirds.

Ladybirds


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  • Update – Wellesbourne, 09–15/10/2017, Suction, 12 caught, 0% carrying TuYV Kirton, 09–15/10/2017, Su… by Angela Hambidge on this entry
  • Update Spalding 28/9 02/10/2017 YWT 12 caught, 25% carrying TuYV. by Angela Hambidge on this entry
  • Update – Wellesbourne 02 – 08/10/2017 Suction, 11 caught, 14% carrying TuYV 09 – 12/10/2017 YWT, 1 c… by Angela Hambidge on this entry
  • Update – Wellesbourne 11/9 – 17/9/2017 Suction trap 1 aphid 0% carrying TuYV Wellesbourne 21/9 – 25/… by Angela Hambidge on this entry
  • Update – Kirton, Lincolnshire 28/8–03/09/2017 Suction trap 4 aphids 33% carrying TuYV Spalding, Linc… by Angela Hambidge on this entry

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