RE: NANFA-- Freshwater inverts

Hoover, Jan J WES (HOOVERJ_at_wes.army.mil)
Fri, 17 Dec 1999 13:54:14 -0600

Sponge taxonomy is based on their skeltal elements: spicules. You have to
digest away the meaty part of the sponge and look at spicule size and shape.

-----Original Message-----
From: R.W.Wolff
Sent: Friday, December 17, 1999 1:51 PM
To: nanfa_at_aquaria.net
Subject: Re: NANFA-- Freshwater inverts

I'm not sure what caused this, but some sponges in my pond did the gammule
thing in early September. the only difference i noticed was shorter
daylength. It could be the species. this species if from the marshes in
my area that are soft and acidic, and considered low in nutrients. they
are almost always green from the symbiotic relationship with algae. In the
shade they are yellow. in a medium water stream ( warm water) their is a
sponge that grows "towers" kind of like those magic rocks they used to sell
to kids. these grow in the current, which seems odd, as i would assume the
current could be hard on the towers. In cold water streams I find sponges
simliar to the marsh variety, but they are more like louverd surface than
smooth. I guess these could all be the same species, just growing
differnetly in different habitats,
Ray

/---------------------------------------------------------------------------

--
/"Unless stated otherwise, comments made on this list do not necessarily
/ reflect the beliefs or goals of the North American Native Fishes
/ Association"
/ This is the discussion list of the North American Native Fishes
Association
/ nanfa_at_aquaria.net. To subscribe, unsubscribe, or get help, send the word
/ subscribe, unsubscribe, or help in the body (not subject) of an email to
/ nanfa-request_at_aquaria.net. For a digest version, send the command to
/ nanfa-digest-request_at_aquaria.net instead.
/ For more information about NANFA, visit our web page, http://www.nanfa.org


/-----------------------------------------------------------------------------
/"Unless stated otherwise, comments made on this list do not necessarily
/ reflect the beliefs or goals of the North American Native Fishes
/ Association"
/ This is the discussion list of the North American Native Fishes Association
/ nanfa_at_aquaria.net. To subscribe, unsubscribe, or get help, send the word
/ subscribe, unsubscribe, or help in the body (not subject) of an email to
/ nanfa-request_at_aquaria.net. For a digest version, send the command to
/ nanfa-digest-request_at_aquaria.net instead.
/ For more information about NANFA, visit our web page, http://www.nanfa.org