In Portland, Oregon, the city maintains some casting ponds in a park that
are about two feet deep and concrete. Geese and ducks love the ponds and
use them when toy boaters and fly fishermen are not. These ponds have the
highest concentration of daphnia I have ever seen. About Easter is when it
is time to begin collecting. The ponds have street lights all around them,
so night collecting is a breeze. Maybe you can find something similar near
you.
Norm Edelen
Portland, Oregon
________________________________
A Proud Member of
The Greater Portland Aquarium Society.
www.gpas.org
The North American Native Fishes Association
30 years of conservation efforts, public education,
and aquarium study of our native fishes.
www.nanfa.org
Lake Baikal Endemics Rock!
_________________________________
----- Original Message -----
From: "R. W. Wolff" <choupiqu_at_wctc.net>
To: <nanfa_at_aquaria.net>
Sent: Tuesday, June 24, 2003 7:18 PM
Subject: Re: NANFA-- wild daphnia - where do you find them? When do you find
them?
My secrets for finding daphnia.
In large deep lakes. Find a pier that has lights on it. Just after sun set
the daphnia seem to blanket the surface in mid to late spring, seemingly
attracted to the lights. Using a butterfly net they can be scooped up.
Better is to look in vernal pools, near swamps in wooded areas. As long as
there are not fish in them, and low numbers of predators like diving beetler
larvae. Tons of interesting life turns up in these pools, that often dry up
in summer, and freeze to the bottom in winter. Tannic water is a good
idicator that daphnia will be in good numbers. Swishing a butterfly or
aquarium net through the grass along shore, and then trying mid open water
if that doesn't prove successful should turn up some. Once you find a place
by day, go back at night and you will probably do much better. Glassworms,
blood worms, fairy shrimp, clam shrimp, and lots of other interesting
?crustaceans? that lay eggs that can dry out can be found in these areas.
Most all are good feeder items. Just watch out for dragonfly and diving
beetle larvae.
Ray
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