I built a pond in my backyard. Before I even topped it off, I started finding water boatman (Corixidae) swimming in there.

Note that the nearest body of water from my home is 30 miles away, and its about 1/2 acre in size. There are dry river beds, dry canals, and even a dry lake nearby, but I've never seen water there in 5 years being here.

So how is it that water boatman can show up so suddenly in my pond?


1 Answer 1

  • In animals some species migrate, some hibernate and some aestivate to overcome the unfavorable conditions such as desiccation.
  • Some aquatic organisms enters into diapause during unfavorable conditions.

Source: toppr, also see Gemmule (in sponges)


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