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How can I tell if queen is fertile?


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22 replies to this topic

#1 Offline MinigunL5 - Posted June 2 2020 - 3:07 PM

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I have queens, all with eggs, and I'm not 100% sure they are mated. How can I tell if they are?


Edited by MinigunL5, June 2 2020 - 4:28 PM.


#2 Offline TheMicroPlanet - Posted June 2 2020 - 3:53 PM

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I often hear that fertile queens are more likely to have their eggs in a neat little pile, while unfertile queens will leave them lying around.


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#3 Offline MinigunL5 - Posted June 2 2020 - 3:55 PM

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I often hear that fertile queens are more likely to have their eggs in a neat little pile, while unfertile queens will leave them lying around.

What if its just one egg that is not in a pile? Also what would be a neat little pile?



#4 Offline Pumpkin_Loves_Ants - Posted June 2 2020 - 4:02 PM

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There is no 100% guaranteed way to tell if a queen has mated, but you can look for signals. Did you find them with or without wings? Queens with their wings still attached have a lower chance of having mated but it doesn't mean they aren't fertile. When were the eggs laid? You should see development into larvae around 1-2 weeks depending on the species. Fertile queens also tend to clean the tips of their gasters quite often. 

 

What if its just one egg that is not in a pile? Also what would be a neat little pile?

A neat little pile is a bit self-explanatory. It means the eggs aren't scattered individually around the queen. If just one egg isn't in the pile it most likely means the queen laid it very recently and hasn't gotten the chance to move it to the main pile.

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Lasius Neoniger (Around 23ish workers)

Tetramorium Immigran (8 Workers)

Myrmica Queen (Not 100% on species)

Formica Subsericea (No workers)


#5 Offline TheMicroPlanet - Posted June 2 2020 - 4:02 PM

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A pile would be if all the eggs were clumped closely together



#6 Offline MinigunL5 - Posted June 2 2020 - 4:05 PM

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A pile would be if all the eggs were clumped closely together

What about when the eggs hatch? Will they even hatch?



#7 Offline TheMicroPlanet - Posted June 2 2020 - 4:13 PM

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Sometimes queens lay trophic eggs, which they eat before hatching. However, if an infertile queen lives long enough, her eggs will grow into males.


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#8 Offline ANTdrew - Posted June 2 2020 - 4:18 PM

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Probably over 98% of queens are fertile unless they have some genetic deformity or something. What you should be asking is if the queens are mated.
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#9 Offline TheMicroPlanet - Posted June 2 2020 - 4:22 PM

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I think that's what they meant... I'm guilty of using them as synonyms too



#10 Offline MinigunL5 - Posted June 2 2020 - 4:28 PM

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I think that's what they meant... I'm guilty of using them as synonyms too

Oops, sorry


Probably over 98% of queens are fertile unless they have some genetic deformity or something. What you should be asking is if the queens are mated.

Ah ok, I meant mated then, not fertile



#11 Offline Thunder_Birds - Posted June 2 2020 - 6:28 PM

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I often hear that fertile queens are more likely to have their eggs in a neat little pile, while unfertile queens will leave them lying around.

Interesting....I did not know that


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#12 Offline NickAnter - Posted June 2 2020 - 6:31 PM

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I actually find one of the best indicators is caring for the eggs, constantly licking them, as many queens will lay a pile of eggs, and just ignore it. All of those seem to be unmated.


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Hi there! I went on a 6 month or so hiatus, in part due, and in part cause of the death of my colonies. 

However, I went back to the Sierras, and restarted my collection, which is now as follows:

Aphaenogaster uinta, Camponotus vicinus, Camponotus modoc, Formica cf. aserva, Formica cf. micropthalma, Formica cf. manni, Formica subpolita, Formica cf. subaenescens, Lasius americanus, Manica invidia, Pogonomyrmex salinus, Pogonomyrmex sp. 1, Solenopsis validiuscula, & Solenopsis sp. 3 (new Sierra variant). 


#13 Offline MinigunL5 - Posted June 3 2020 - 3:32 PM

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I actually find one of the best indicators is caring for the eggs, constantly licking them, as many queens will lay a pile of eggs, and just ignore it. All of those seem to be unmated.

https://imgur.com/a/KsJsEbW

that's an older picture, but do you think it's mated?



#14 Offline MinigunL5 - Posted June 3 2020 - 3:36 PM

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Probably over 98% of queens are fertile unless they have some genetic deformity or something. What you should be asking is if the queens are mated.

Wouldn't gravid be a better term?



#15 Offline NickAnter - Posted June 3 2020 - 4:00 PM

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Gravid means with eggs. Unmated queens can still lay eggs. I can't guess whether that queen you have there is mated, I would have to observe for a few days.


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Hi there! I went on a 6 month or so hiatus, in part due, and in part cause of the death of my colonies. 

However, I went back to the Sierras, and restarted my collection, which is now as follows:

Aphaenogaster uinta, Camponotus vicinus, Camponotus modoc, Formica cf. aserva, Formica cf. micropthalma, Formica cf. manni, Formica subpolita, Formica cf. subaenescens, Lasius americanus, Manica invidia, Pogonomyrmex salinus, Pogonomyrmex sp. 1, Solenopsis validiuscula, & Solenopsis sp. 3 (new Sierra variant). 


#16 Offline MinigunL5 - Posted June 3 2020 - 4:02 PM

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Gravid means with eggs. Unmated queens can still lay eggs. I can't guess whether that queen you have there is mated, I would have to observe for a few days.

Ok  :)  (y)  

 

Edit: look at this https://www.research...pregnant_insect


Edited by MinigunL5, June 3 2020 - 4:09 PM.


#17 Offline MinigunL5 - Posted June 3 2020 - 4:05 PM

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Gravid means with eggs. Unmated queens can still lay eggs. I can't guess whether that queen you have there is mated, I would have to observe for a few days.

This is a weird word, but would impregnated be a good term instead of mated? XD



#18 Offline Temperateants - Posted June 3 2020 - 4:23 PM

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Well, everyone else here brought up good points. Basically some signs:

  • Wingless: not always a reliable sign, I've had plenty of queens I found with wings found colonies.
  • Licking the tip of their gaster: They curl up, as if to lay an egg. I like to think of this as practice.
  • Settling down: A lot of mated queens will settle down quicker, but this isn't actually a very reliable sign, as most Camponotus queens are very active in the first few days, and eventually unmated queens will also settle down.
  • Egg piles: In the rare occurance unmated queens lay, they will usually eat the piles (some sensitive queens do this though) or lay eggs but not organize them. I have dealt with these queens before

Sometiimes, you can encourage laying by providing better conditions, such as using a heating cable if your queen doesn't get enough heat and providing adequate humidity and giving your queens a lot of space.


Edited by Temperateants, June 3 2020 - 4:23 PM.

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#19 Offline MinigunL5 - Posted June 3 2020 - 4:29 PM

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Well, everyone else here brought up good points. Basically some signs:

  • Wingless: not always a reliable sign, I've had plenty of queens I found with wings found colonies.
  • Licking the tip of their gaster: They curl up, as if to lay an egg. I like to think of this as practice.
  • Settling down: A lot of mated queens will settle down quicker, but this isn't actually a very reliable sign, as most Camponotus queens are very active in the first few days, and eventually unmated queens will also settle down.
  • Egg piles: In the rare occurance unmated queens lay, they will usually eat the piles (some sensitive queens do this though) or lay eggs but not organize them. I have dealt with these queens before

Sometiimes, you can encourage laying by providing better conditions, such as using a heating cable if your queen doesn't get enough heat and providing adequate humidity and giving your queens a lot of space.

Thx for the help! Thankfully, all my queens so far have laid eggs. :D

I will look out for them licking the tip of their gastor.  (y)



#20 Offline AntsDakota - Posted June 3 2020 - 4:38 PM

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Gravid means with eggs. Unmated queens can still lay eggs. I can't guess whether that queen you have there is mated, I would have to observe for a few days.

This is a weird word, but would impregnated be a good term instead of mated? XD
Or perhaps inseminated? I always feel like ‘unmated’ is such a casual and non scientific term.

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