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Search took 0.17 seconds. Search: Posts Made By: Gonodactylus
Forum: Mantis Shrimp 01/11/2008, 05:11 PM
Replies: 5
Views: 5,384
Posted By Gonodactylus
Whenever I go into the field, I always take a...

Whenever I go into the field, I always take a dive light and net. Each night, particularly a few days after the full moon until the new moon, I try to spend an hour or so standing in the water with...
Forum: Mantis Shrimp 01/11/2008, 02:35 PM
Replies: 5
Views: 5,384
Posted By Gonodactylus
Juvenile Lysiosquillina reared in captivity

A couple of years ago I captured several larval Lysiosquillina in the water column. They were about 2.5 cm at the time and quickly molted to postlarvae. They were allowed to burrow in sand and have...
Forum: Mantis Shrimp 01/10/2008, 04:12 PM
Replies: 6
Views: 3,355
Posted By Gonodactylus
Work on the biomechanics of their strike. I...

Work on the biomechanics of their strike.

I go to Australia and catch my own.

Roy
Forum: Mantis Shrimp 01/10/2008, 04:03 PM
Replies: 6
Views: 3,355
Posted By Gonodactylus
I currently have about 20 2-3'' G. smithii being...

I currently have about 20 2-3'' G. smithii being used in some research. Each is housed in a half gallon plastic tub with a 4 inch piece of pvc for a container and the water is about 4 inches deep. ...
Forum: Mantis Shrimp 01/09/2008, 01:12 PM
Replies: 5
Views: 3,495
Posted By Gonodactylus
I never tried to treat it, but the animals that I...

I never tried to treat it, but the animals that I have seen with visible signs of infection never successfully molted.

Roy
Forum: Mantis Shrimp 01/09/2008, 10:45 AM
Replies: 5
Views: 3,495
Posted By Gonodactylus
I sometimes see nematode infections. You can...

I sometimes see nematode infections. You can actually see them wiggling under the cuticle. It looks like the beginning of a bad SciFi movie.

Roy
Forum: Mantis Shrimp 01/07/2008, 06:00 PM
Replies: 13
Views: 3,718
Posted By Gonodactylus
It will not have to regrow the entire raptorial...

It will not have to regrow the entire raptorial appendage, so a couple of molts should do it.

Roy
Forum: Mantis Shrimp 01/07/2008, 04:39 PM
Replies: 13
Views: 3,718
Posted By Gonodactylus
Well, nature has its revenge. The Lysiosquillina...

Well, nature has its revenge. The Lysiosquillina maculata that struck me last week tried it again, but this time hit the top edge of the container and broke its dactyl. There is a lesson to be...
Forum: Mantis Shrimp 01/06/2008, 06:38 PM
Replies: 4
Views: 3,279
Posted By Gonodactylus
This illustrates very well the typical burrowing...

This illustrates very well the typical burrowing behavior of Lysiosquillids - first a trench followed by somersaults to to scoop up mud at the bottom of the burrow and depositing as back fill. In...
Forum: Mantis Shrimp 01/06/2008, 06:30 PM
Replies: 6
Views: 3,683
Posted By Gonodactylus
The first is probably Gonodactylaceus glabrous,...

The first is probably Gonodactylaceus glabrous, the second is definitely a female Gonodactylus chiragra.

Roy
Forum: Mantis Shrimp 01/04/2008, 05:26 PM
Replies: 10
Views: 1,047
Posted By Gonodactylus
The male O. scyllarus molted this morning as...

The male O. scyllarus molted this morning as predicted. Clearly the lighter patch on the back is part of the process. Thanks for pointing this out to me. It will prove useful in predicting molts. ...
Forum: Mantis Shrimp 01/04/2008, 04:41 PM
Replies: 2
Views: 781
Posted By Gonodactylus
For an animal this size, it can take weeks for it...

For an animal this size, it can take weeks for it to regain full power. The striking surface has to be re-calcified and the various muscle attachments and springs must regain their resiliency. ...
Forum: Mantis Shrimp 01/04/2008, 10:55 AM
Replies: 8
Views: 1,013
Posted By Gonodactylus
I don't know of any evidence that O. scyllarus...

I don't know of any evidence that O. scyllarus signal aggression by striking the substrate. I have reported this in Neogonodactylus. More likely the animal is trying to enlarge and/or modify the...
Forum: Mantis Shrimp 01/03/2008, 07:52 PM
Replies: 3
Views: 958
Posted By Gonodactylus
Stomatopods and use by Humans

I was asked today by a high school student writing a report what importance stomatopods had to humans. I though some of you might be interested in my answer. I've written on this before, but for...
Forum: Mantis Shrimp 01/03/2008, 07:34 PM
Replies: 10
Views: 1,047
Posted By Gonodactylus
I wish I could give you a definitive answer. It...

I wish I could give you a definitive answer. It really seems to depend on the size and health of the animal, the quality of the water, whether you are running UV sterilization, etc., etc. From my...
Forum: Mantis Shrimp 01/03/2008, 06:37 PM
Replies: 10
Views: 1,047
Posted By Gonodactylus
Ryan, I have a large green male O.s that is...

Ryan,

I have a large green male O.s that is preparing to molt. It is probably a day away. I looked at it this afternoon and it has the same pattern on the abdominal tergites. We will see!

Roy
Forum: Mantis Shrimp 01/02/2008, 04:34 PM
Replies: 8
Views: 1,341
Posted By Gonodactylus
Color in N. wennerae is mostly determined by...

Color in N. wennerae is mostly determined by ambient lighting and background matching. The red morphs usually come from fairly deep LR. However, at the LFS it was probably held on a light...
Forum: Mantis Shrimp 01/02/2008, 02:07 PM
Replies: 5
Views: 1,714
Posted By Gonodactylus
If you copy the labeled drawing of the P. ciliata...

If you copy the labeled drawing of the P. ciliata that I have posted, only a few additions should make the drawing more useful. The cephalothorax has 8 segments. The first 5 each have a pair of...
Forum: Mantis Shrimp 01/02/2008, 02:00 PM
Replies: 8
Views: 830
Posted By Gonodactylus
The flow is not a problem. These animals can...

The flow is not a problem. These animals can easily handle a fairly strong current as long as the sand isn't blowing around. Lighting is another matter. N. c. is usually found below 5-10 m and as...
Forum: Mantis Shrimp 01/02/2008, 11:46 AM
Replies: 13
Views: 3,718
Posted By Gonodactylus
Most spearers strike defensively with a closed...

Most spearers strike defensively with a closed dactyl so there is little danger probing their burrows with a finger - usually inside a glove. However, when the animal in question is larger than...
Forum: Mantis Shrimp 01/02/2008, 11:42 AM
Replies: 10
Views: 1,047
Posted By Gonodactylus
Ryan, I'm not sure what the light stripe on...

Ryan,

I'm not sure what the light stripe on the abdominal tergites is, but I can't remember seeing something like this associated with a molt.

There are morphological changes associate with the...
Forum: Mantis Shrimp 01/02/2008, 11:24 AM
Replies: 13
Views: 3,718
Posted By Gonodactylus
Actually, the strike was defensive in nature and...

Actually, the strike was defensive in nature and was with a closed dactyl. I (and the male)were lucky that it wasn't a feeding strike. I'm sure the barbed dactyl spines would have embedded in my...
Forum: Mantis Shrimp 01/02/2008, 11:14 AM
Replies: 3
Views: 609
Posted By Gonodactylus
This is a topic that I haven't written much...

This is a topic that I haven't written much about, but as usual, the answer depends on the age and species under consideration. Obviously, there are are major differences in behavior in sexually...
Forum: Mantis Shrimp 12/31/2007, 08:52 PM
Replies: 13
Views: 3,718
Posted By Gonodactylus
Not this time. I was too busy trying to deal...

Not this time. I was too busy trying to deal with the effects. I will be typing with one hand for awhile.

Roy
Forum: Mantis Shrimp 12/31/2007, 07:19 PM
Replies: 13
Views: 3,718
Posted By Gonodactylus
Whacked by a Lysiosquillina

I was hit by a 27 cm L. maculata this afternoon. For those of you keeping large burrowing spearers, please don't become complacent. Even though these animals are fairly shy and usually retire into...
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