Dipping for sub-aquatic beasties

Wednesday, August 8th 2018

On today's Pond Dipping - Discover the Depths! event we were running all three dipping platforms for the first time this year.

Our 22 strong group of Pond Dippers found all manner of things, including various beetle larvae, fish, midge nymphs, water boatman, dragonfly and damselfly nymphs, pond skaters, whirligig beetles and two Great Diving Beetles.  

Great Diving Beetles undergo complete metamorphosis, meaning that they have a four staged life cycle; egg, larva, pupa and adult, with some living for up to 3 years in their adult form!

If you cast your mind back to the 11th June I mentioned that the Great Diving Beetle larvae was a 'fierce predator', the same can certainly be said of the adult form, which will also hunt smaller invertebrates, tadpoles and small fish.

Aquatic beetles began colonising the land having evolved over millions of years, and as such still rely on atmospheric oxygen, returning to the surface of the pond to replenish their supply of air which they store beneath hardened fore wings (elytra) which also serve to protect their membranous hind wings. 

Despite being so heavily armoured adult Great Diving Beetles are able to fly, and will do so when colonising new ponds. They will do this when competition for food is too high, in order to search for mates, or to find more suitable habitat.

It is plausible that a few adults many have chosen the bottom pond on the Scrapes because it is deeper and so less likely to freeze all the way to the bottom in winter, allowing them to hibernate in the plant matter and detritus at the bottom.


(0) Comments:

There are no comments for this blog post yet. Why not start the discussion? - use the form below:


Leave a Comment:







Remember my personal information

Notify me of follow-up comments?

The following question is designed to make sure you are a real person and helps us cut down on spam.
Your comments will appear here once an administrator has reviewed them.

How many days are there in one year? (3 character(s) required)


Back to Top

Recent Blog Posts:

The Ever Hungry Ponies

Posted 16th October 2018

  Morning checks at Foxglove always start with a visit to see the ponies; as you may have guessed from the pictures below this visit…

Read More

Boardwalk repair or replace?

Posted 15th October 2018

  This morning we had the fun and games of an LPG tank replacement, you've got to feel for the guys over at Landmarc who…

Read More

A Glorious Day - Part Two

Posted 14th October 2018

We had moths in the morning and then in the afternoon sunshine we had butterflies. Michaelmas Daisies were planted in the back garden for such…

Read More

A Glorious Day - Part One

Posted 13th October 2018

No I am not referring to, today but Wednesday.  Being poetic, the light, driving into Foxglove was bright, hazy, shimmering, misty  and a bit strange. …

Read More
 
 
 

Sitemap | Accessibility Policy | Privacy Policy | Terms & Conditions |