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Post by Maksim khorunov on Aug 11, 2018 10:45:48 GMT
First and second.
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Post by Adam Cotton on Aug 11, 2018 12:08:52 GMT
The eggs which are turning brown in the top photo above are fertile. These must have been accumulating in the tip of the oviduct. Only eggs that have passed the opening of the spermatophore inside the female genitalia will actually be fertile, so any eggs obtained by cutting open the abdomen and removing them will be infertile, except those right at the tip of the abdomen.
The eggs in the second photo actually look infertile, unless you took the photo on the first day. The difference in appearance is due to the 'glue' secreted on the surface as the female lays the eggs. Are you sure this female has mated? If the eggs do not change colour you should hand pair her with a male. They may not want to mate naturally inside a room in a house.
Adam.
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Post by Adam Cotton on Aug 11, 2018 12:42:08 GMT
Followed the advice of Adam and the holding female in a small cage with casteneum, she continues to postpone Strange, she should lay eggs. Perhaps she hasn't mated. In any case letting the female fly naturally is always better than enclosing her in a cage. Adam.
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Post by Maksim khorunov on Aug 12, 2018 8:18:05 GMT
Adam, the eggs in the second photo were postponed from the morning of the 8th to the evening of 10 and the photo I made yesterday. The female mated on the morning of the 7th day for 1 hour and 20 minutes and the next morning began to lay eggs. Continues to postpone until now, and yesterday and today more actively. I have to keep the female in the cage because the weather is cloudy and there is no sun so the cage is under artificial lighting. Yes, it will be very sad if the eggs are not fertilized.
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Post by Maksim khorunov on Aug 12, 2018 10:17:23 GMT
Maybe for some reason the mating itself was not fertile?
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Post by Adam Cotton on Aug 12, 2018 21:01:03 GMT
Maybe you should try mating it again. If the eggs still haven't started to change colour they must be infertile. Normally the brown speckling starts to appear after about 24 hours in eggs that are fertile, and after 2 days it should be obvious under a magnifying lens. If the temperature is rather low it may be a little slower.
Adam.
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Post by jmg on Aug 13, 2018 8:14:00 GMT
These caterpillars of P. machaon were photographed at Kato Lechonia, 18 m asl, (Thessalia, Greece), on June 28, 2018. Can I be told about their stages of development? The second for the youngest and the fifth for the older? Thank you so much !
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Post by Adam Cotton on Aug 13, 2018 9:12:32 GMT
The green larva is definitely 5th instar, and the small one is either late 2nd or maybe 3rd instar. There is some small variation in appearance between populations, and also variation in 5th instar can sometimes be seen depending on foodplant.
Adam.
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Post by Maksim khorunov on Aug 21, 2018 15:39:26 GMT
Friends! Unfortunately my experience was unsuccessful. All the eggs from the two pairs were unfertilized. I wonder why the pairing was fruitless?
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Post by Adam Cotton on Aug 21, 2018 20:15:53 GMT
So none of the 5 fertile eggs in the top photo on this page actually hatched? That's a pity. The eggs in the second photo were all clearly infertile. Some machaon populations are easier to breed than others, and if they are already inbred it can be more difficult.
I hope you get a chance to try again soon.
Adam.
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