[Killietalk] RE:artemia..again

["Doug Ebeling" <ebeling at charter_net>]

Unexplained and occasional failed hatches was a problem I experienced a few
years ago.  I moved my hatch bottles into another room and had forgotten
that artemia need some light to hatch properly, as previously pointed out by
Paul Jarvis.  The addition of a night light close to the hatch bottle solved
my problem.

Has something changed with your lighting conditions?

Best Regards,
Doug Ebeling
Spring, Texas
AKA
TAKO

-----Original Message-----
Date: Mon, 5 Apr 2004 16:19:01 -0400
From: "Scott Taylor" <staylor at brevardparks_com>
Subject: [Killietalk] artemia..again
To: <killietalk at aka_org>

Not that the subject (artemia) has not been beaten to death, but I am having
an unexplained problem with hatching: have been doing it for years, fairly
uneventfully, but within the last several months I frequently have batches
that fail to hatch at all.  I have changed nothing in my technique: about 20
ppt salinity (aged seawater/aged tap water), vigorous aeration.  I have
changed cyst manufacturer, to no avail: if I start two batches (usually in 2
liter inverted plastic soda bottles), one may fail and the other not.
Sometimes all fail for a couple days in a row and then they do fine.  There
is no pattern that I can detect.  I always rinse containers in hot tap water
between hatchings, sometimes have even tried mild bleach solution as a
rinse/soak.  Any suggestions welcome?
dst

D. Scott Taylor, Ph.D.
Brevard County Environmentally Endangered Lands (EEL) Program
Central Region Land Manager
5560 North US Highway 1
Melbourne, FL 32940
tel: 321.255.4466
FAX: 321.255.4499
email: staylor at brevardparks_com


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