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crepsis

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About crepsis

  • Rank
    Nymph
  • Birthday 11/19/1978

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  • Gender
    Male
  • Location
    Fort Collins, CO
  1. OH! Now that was the kind of explanation I was hoping for! Thanks again!
  2. Very cool stuff! Apparently, that was not in an abstract...I just assumed it was, because I had been reading so many that day, and the article was so short I guess it just all ran together in my head when I thought to post it here. It's actually an answer to a reader's question in 'India's National Newspaper' - The Hindu, by an Entomologist at AVRDC, The World Vegetable Center, Dr. R. Srinivasan, in Shanhua, Taiwan.
  3. OMG! OMG! OMG! I had no idea that my females had given birth before! They must have, because I just saw two nymphs less than 1/4 inch long! I'm so excited, and they're SOOOO cute!
  4. So it's definitely genetic. Rosenkreiger: Do you have any males that do not have that, or do they all have it? Did you happen to notice when they were nymphs if the "notch" was apparent at that time? I've just been doing some thinking about it, and if there are males that do not have that trait, it would probably be fairly easy to breed a line that do not show it in as little as 2-3 generations from several (or many!) initial pairings - with a LOT of work (fun), time, and LOTS of space/containers! But, if all males show that trait, then it's probably not possible...which it sounds like
  5. http://www.usatoday.com/tech/science/disco...ckroaches_N.htm Fascinating!
  6. Unfortunately no, I've just been doing some research on the internet and found this piece of information interesting. I thought that it would be interesting for other people as well, since I had no idea that it was even possible for different sexes of the same species to have a different number of chromosomes! I found it in the abstract of a research paper on cockroach chromosomes, and I'm too cheap to pay for the whole article to read more, at this point, when I can probably find more related information for free with a little work. But, if I do run across anything else like this, I will de
  7. Ok! I still have some questions though... So then is it a genetic trait, or is this a type of injury obtained when mating? I noticed that when mating, one of the roaches may try to run away, and ends up dragging the other around for a bit...which is why I was wondering if it could be a 'natural phenomenon' ( a result of being pulled apart after mating is finished) as opposed to a genetic trait. Are there males that do not have this trait, or is it something that 100% of males from B. craniifer, B. giganteus, B. colosseus, B. bolivianus, B. parabolicus, B. fusca, B. atropos carry? Wh
  8. Some insects such as cockroaches, grasshoppers, and crickets have only one type of sex chromosome: X. This means that male and female cockroaches have a different number of chromosomes. This is very different from most organisms, which have either X and Y sex chromosomes (most people are familiar with these) or W and Z sex chromosomes (birds and some insects use these for sex determination). Females have two of the same sex chromosomes (XX) Males have just one sex chromosome (X0) <---The 'zero' is a place marker, it means that there is no second X chromosome there.
  9. Here's a short article about cockroaches conceived in space by the russian space program! How cool is that!? http://en.rian.ru/science/20080117/97179313.html
  10. ...it's more aesthetic than anything else, they don't appear to be physically affected by this. This is my first colony, and I'm just wondering if this is something that all male captive bred B. craniifer have and if it can be bred out through selective breeding, or if maybe this is a husbandry issue, or if this is a natural phenomenon? And as far as I can tell most of the males have this, short of picking out the roaches one-by-one to verify that they all do. Again, I must reiterate, it looks almost exactly the same, in the exact same spot on the males that I have gotten a look at, I've cou
  11. I know part of this is a bit off-topic, but are there any studies that have been done on the genetics behind different roach morphs? Is it as simple as a dominant trait or a recessive trait, or is the black determined by something more complex?
  12. Well, I'm seeing a slight "notch" on the underside of the last segment of the abdomen in the *exact* same place on several (if not all) males of my adult B. craniifers. It makes the underside of the last segment appear asymmetric, and if the underside of the male roach looked like the letter U it would be on the left side of the last segment, with a single very, very small "bristle" sticking out of the notched area. The notched area also appears lighter in pigment, almost white or tan, to the rest of the segment, which is black. It almost looks like some kind of injury, but since it appears
  13. I know they loved raw broccoli...unfortunately (or fortunately depending on how you look at it!) I fed the last of my crickets to my pet toad. The experience of catching them, raising them, and then breeding them was educational, fun, and exciting at times! I almost miss them, until I think why I decided to feed the last of them off in the first place.
  14. I have successfully raised Gryllus veletus (spring field cricket) to a couple generations before I couldn't stand the smell any more (but that was my fault - keep reading). Most likely the ones that you're talking about are either those or Gryllus pennsylvanicus (fall field cricket). G pennyslvanicus supposedly need to have their eggs go through a dormancy period in cold temperatures to hatch - at least 3 months or so. G. veletus overwinter as juveniles and lay eggs in the spring that don't need to go through that period, so, in my experience, can be raised indoors. I just started out and ca
  15. Do they get their orange coloring after their exoskeleton has dried a bit?
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