How big are trapdoor snails when they're "born?


Mmathis

TurtleMommy
Joined
Apr 28, 2011
Messages
9,806
Reaction score
5,628
Location
NW Louisiana -- zone 8b
Hardiness Zone
8b
Country
United States
Has anyone seen any brand new baby trapdoor snails? I added a bunch of TD's to the pond last summer, and I know they've had babies 'cause I'll occasionally find one that is smaller than the ones I put in. The smallest one I've found was about the size of the end of my pinkie finger.

But just wondering how big [or maybe I should say, how small?] they are when they start their lives....
 
Ad

Advertisements

addy1

water gardener / gold fish and shubunkins
Moderator
Joined
Jun 23, 2010
Messages
35,824
Reaction score
20,488
Location
Frederick, Maryland
Hardiness Zone
6b
Country
United States
the smallest I have seen is around a grain of sand, tiny
 

sissy

sissy
Joined
Jan 17, 2011
Messages
31,804
Reaction score
14,748
Location
Axton virginia
Hardiness Zone
7A
Country
United States
The little ones were white little tiny BB looking things when the momma gives birth
 

sissy

sissy
Joined
Jan 17, 2011
Messages
31,804
Reaction score
14,748
Location
Axton virginia
Hardiness Zone
7A
Country
United States
They say they can be but are OK cleaners of the pond .They give birth to live babies but fund even small goldfish like them also ,the small new snails are the ones the goldies liked
 

addy1

water gardener / gold fish and shubunkins
Moderator
Joined
Jun 23, 2010
Messages
35,824
Reaction score
20,488
Location
Frederick, Maryland
Hardiness Zone
6b
Country
United States
I put in a 100 of them in the big pond, the only place I see lots is in the fishless ponds. There they makes lots of kids. The big pond has them in, quite a few but not at invasive levels. Some are quite large 3 inches or so, I am very careful if I do scoop out muck to make sure they are not tossed away.
 
Joined
Jan 8, 2014
Messages
212
Reaction score
76
Location
Houston, TX
this might be a silly question, but do the fish eat the babies whole? or do you find the shells afterwards?
 

addy1

water gardener / gold fish and shubunkins
Moderator
Joined
Jun 23, 2010
Messages
35,824
Reaction score
20,488
Location
Frederick, Maryland
Hardiness Zone
6b
Country
United States
They are so tiny off and on I find a small empty shell, not very often.
 

sissy

sissy
Joined
Jan 17, 2011
Messages
31,804
Reaction score
14,748
Location
Axton virginia
Hardiness Zone
7A
Country
United States
Thing is if you net the bottom of your pond to get poo and stuff out you have to look for snails in it
 

Mmathis

TurtleMommy
Joined
Apr 28, 2011
Messages
9,806
Reaction score
5,628
Location
NW Louisiana -- zone 8b
Hardiness Zone
8b
Country
United States
I did a web search about this, but didn't find much scientific info -- mostly just forum posts, that kinda stuff. Some people said they actually witnessed the births of babies. One person said the "mom" TD snail used her antennae to pull the birth membranes off the babies. Not gonna dispute that, but.....

Also read some on how you can tell the males & females apart -- has to do with the size & shape of the antennae, apparently. All the bigger ones in my tank look about the same -- one curled antennae, which is supposed to indicate it's a boy.

So now when I toss muck, gonna have to look more closely for baby, TEENY baby, snails! :)
 

sissy

sissy
Joined
Jan 17, 2011
Messages
31,804
Reaction score
14,748
Location
Axton virginia
Hardiness Zone
7A
Country
United States
I watched mine give birth .I put the snails in a fish tank and saw the babies fall down the glass .By the next morning I saw 22 babies born and missed some .It was interesting to watch could not get good pics since the babies were so smal The mommas would climb the glass
 

sissy

sissy
Joined
Jan 17, 2011
Messages
31,804
Reaction score
14,748
Location
Axton virginia
Hardiness Zone
7A
Country
United States
I put them in a tank at first and could not take my eyes off all the babies being born
 

Mmathis

TurtleMommy
Joined
Apr 28, 2011
Messages
9,806
Reaction score
5,628
Location
NW Louisiana -- zone 8b
Hardiness Zone
8b
Country
United States
How do you know if your TD snail is "expecting?" Well, there is an answer for that -- who knew!

How to Tell if a Livebearing Snail Is Pregnant
If you have a livebearing snail like a Japanese trapdoor snail (Viviparus malleatus), the eggs will be visible in the mother snail's shell. The eggs will hatch in her shell, and the babies will remain there for the first stage of their lives. Many species of Viviparus will bury themselves in the substrate until their babies are ready to emerge from the mother's shell. If your snail has buried herself in the gravel, she's likely to be pregnant. Livebearers often reproduce only twice a year and produce small broods compared with those of egg-layers.

And here's a link that talks about some in-general information about them.
http://www.aquariacentral.com/forums/showthread.php?158651-Sexing-Japanese-Trapdoors-(Viviparus-malleatus)
 

addy1

water gardener / gold fish and shubunkins
Moderator
Joined
Jun 23, 2010
Messages
35,824
Reaction score
20,488
Location
Frederick, Maryland
Hardiness Zone
6b
Country
United States
Neat info, I never did look them up to see how they did it.
 

Mmathis

TurtleMommy
Joined
Apr 28, 2011
Messages
9,806
Reaction score
5,628
Location
NW Louisiana -- zone 8b
Hardiness Zone
8b
Country
United States
Guessing these guys are guys....?

image.jpg
image.jpg
image.jpg


Now, when I look at one of them, all I see are the antennae, LOL!
 
Ad

Advertisements

Joined
Jan 8, 2014
Messages
212
Reaction score
76
Location
Houston, TX
you guys have me thinking i need THESE also! :) (along with oyster shells and clams)
so - the question about these would be - do they die off in winter? I am in Houston - zone 9
 

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Top