Which species has the shortest gestation period...

[TomM]

2 quick questions about breeding:

1) Which type of tarantula(s) has the shortest gestation period, from the mating to the sac?

2) Which tarantulas, with short gestation periods, would be the least difficult to create the proper conditions needed for breeding?

 

[TomM]

thanks in advance

 

[Philth]

Holothele incei and Cyriocosmus elegans both come to mind.

Later, Tom

 

[xhexdx]

Holothele incei and Cyriocosmus elgans both come to mind.

Later, Tom

The Cyriocosmus genus in general, imo.

Also, it depends on whether the spider is carrying eggs before being paired up. If she is, her 'gestation' could be greatly decreased.

 

[TomM]

Great to hear! I've made a few threads asking about C. elegans and other dwarfs because my next T will be one. I always thought C. elegans looked really cool, bothriechis83 is actually holding on to one for me right now. It's destiny...hahaha

 

[GoTerps]

Hey Joe,

Also, it depends on whether the spider is carrying eggs before being paired up. If she is, her 'gestation' could be greatly decreased.

Yes, this is something to keep in mind. I'm aware of a Psalmopoeus laying a fertile eggsac only 2 days after her one and only mating... obviously already full of eggs. Since the OP specifically asked about the period "from mating to the sac", this must be considered.

Eric

 

[metallica]

Yes, my male Psalmopoeus irminia with Chris Sainsbuy's female. I bought the male on sunday, Chris mated the spiders on Monday and Wednesday we had a sac.

i also had a P. rufilata drop a sac after 1 week. the male was still in the tank with her.

Eddy

 

[TomM]

that's incredible! I knew that depending on the species and conditions that there would be some short gestation times but 2 days?! How did the sac come out?

 

[Exo]

Yes, this is something to keep in mind. I'm aware of a Psalmopoeus laying a fertile eggsac only 2 days after her one and only mating... obviously already full of eggs. Since the OP specifically asked about the period "from mating to the sac", this must be considered.

How do you get a female to fill with eggs ahead of time? :?

 

[xhexdx]

You ask them nicely.

I see Eric is viewing this thread, so I'll wait for his response.

 

[Noexcuse4you]

I'd have to agree with any of the Psalmopeous. Those things seem to have eggs just sitting in them waiting to be fertilized.

 

[GoTerps]

Howdy,

How do you get a female to fill with eggs ahead of time? :?

You ask them nicely.

I see Eric is viewing this thread, so I'll wait for his response.

Well, I'd suggest that the answer to that question may vary depending on the species. Some species may simply never display this behavior (producing eggs prior to being mating) at all. Others may be induced by entirely different triggers. So, it's a quite complicated thing to answer. I have noticed that arboreals seem to drop a lot more "phantom" sacs... but that may be due to the fact that I keep almost all arboreals

Here's some quick ramblings of thought Intentionally "dumbed" down :

Lets say Species X typically lays eggsacs during the months of February, March, and April. Lets go ahead and assume that, over time, various factors have resulted in spiderlings born during this time having a greater chance of survival.
Now, lets assume a nice female of Species X has been fortunate one spring. She's gotten to consume many scrumptious lizards and bugs, but it's getting late in the mating season and no bachelor has found her lair!!
A certain amount of time is going to be needed to generate a full clutch of eggs in her big ole rump.
Lets assume that eggsacs laid after the last week of April start to have considerably worse survival ratios.
If a lucky male is finally able to find our female near the end of the April, it would be of great benefit if our female had already taken care of the time needed to generate the eggs... and is therefore able to lay the eggsac during that "sweet spot" of time.

Just some thoughts.

Eric

 

[Exo]

So seasonal triggers might do it?

 

[GoTerps]

So seasonal triggers might do it?

Certainly possible.

Eric

 

[Exo]

Certainly possible.

Eric

Looks like before I decide to breed my A.genic I may want to study Brazil's seasonal climate changes.

 

[gunslinger]

Very interesting thread. I never thought of the female "holding eggs" in advance. I was just considering this topic because I have a pair of H. gigas that have been cohabitating for 14 days now. When I got home tonight it appeared as if the female was starting to construct an eggsac in her burrow.

I was quite pleased at first, but then I considered that they, at most, mated 14 days ago, and perhaps even much more recently, and I began to wonder if she really could be dropping a sac that quickly. I thought perhaps not......until I came across this thread. We shall see. :3: