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About Zephyr

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    Roach Food
  • Birthday 08/04/1992

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  1. Looks like a good match! Information for Eublaberus is severely lacking but that's the closest match to the pattern and coloration I've seen yet, even when accounting for the species's variability.
  2. Considering the popularity that our friends the earthworms have been receiving for their effects on indigenous ecosystems, I'm surprised more work hasn't been done on isopods. http://ecosystems.se...hworm-invaders/ They are certainly terraforming (consuming leaf litter, occupying space niches under barks and inside logs, aerating the upper levels of soil, selectively grazing on plants when at high population density, etc) ecosystems but in a way that few have quantified yet. As Orin said though, it's too late to do anything now considering their sheer numbers and diversity.
  3. Once any hard wood leaves turn brown and have begun to decay, roaches will usually ingest them. They're probably after the microbial/fungal communities that have colonized the leaf more than the leaves themselves. Oak (red, bur, pin, black, white/swamp white) are my go-to for roaches. Maple (silver, sugar, black, red), beech (American, musclewood), and basswood (American) are great too but are quickly consumed and don't seem to provide the "slow release" nutrition of the oak leaves as they break down. In Michigan I find Parcoblatta virginica in leaf litter that has a mix of black maple, bla
  4. Here's where we can make some theoretical assumptions. In a system where resistance to pathogen "X" is a simple recessive characteristic, whatever individuals survive would be resistant and the entire colony from that point on would be as well. But what may be the case (making the assumption that my theorizing is what is happening) is resistance may be relayed via heterozygosity or homozygosity of the dominant gene. If this is the case, we would expect that homo. recessives may be weak to the pathogen and that either het. individuals or homo. dominant individuals convey resistance, in which
  5. This species is similar to chopardi but a little bigger and care is seemingly the same but maybe once a year or so I will have a huge die-off in the colony despite no changes in husbandry or diet. I think what may happen is that the fruits/vegetables I feed them are seasonally treated with bacteria that cause infections in insects and at those times due to the lack of genetic diversity in the colony many of the individuals from the baby boom are killed off leaving the healthiest/those with resistance and the cycle begins again. Kai Schuette of the University of Hamberg started the colony from
  6. A few years ago I purchased something called a "winter bamboo shoot" from a local Asian foods store. Upon opening the can I discovered it wasn't the grab-and-go delicacy I had expected. With a big lump of bamboo in my hands I figured it was too much food to simply throw away, so I put it in with my orangehead colony. The nibbled it away in about a week's time; I'd expect they may have been more interested in the salt/preservatives than the root itself so fresh stuff may be a different story.
  7. I wish they had a picture of the holotype to accompany it! Interesting also that the CSF doesn't list orini as confirmed: http://cockroach.spe...nNameID=1178696
  8. A beautiful Archimandrita tesselata. I'm excited to see what other species you found!
  9. I remember when she was a little speck in the back of the car with the flat tire.
  10. I have seen this "dust" on hissers that have not moved or who have not been active for many days. I think it might actually be some sort of waxy cuticular excretion that helps to keep them from drying out as it can be wiped off easily by rubbing one's finger against it, much like the powdery wax on wild black raspberry vines. It's probably harmless to all parties involved.
  11. Subadult male G. portentosa: Adult male G. portentosa: Subadult female G. portentosa: Adult female G. portentosa:
  12. If I have a roach and I'm not sure if it's an adult, the first thing I do is check the ventral abdominal structures and coloration. Immature hissers particularly do not have the adult "color scheme" on their belly, and the segmentation of an adult female has a much more complex, 3-dimensional appearance to it. I will get some comparison pictures later today.
  13. The mechanism could be as simple as a single chemical production (which is ultimately what all biological responses boil down to really). The diet for my roaches is consistent throughout the year as are the bin conditions, so I doubt that it is either of these. Another species that has proven tough is I. deropeltiformis; cultures collected from TN and even AL tend to fizzle out over time. I have gotten to F3 with those but then the deformed adults simply refused to reproduce afterwards. Considering there appears to be a spectrum for these perceived diapause requirements I would think there ma
  14. I have tried to rear multiple strains of P. virginica and P. pennsylvanica including from individuals collected in Michigan, Tennessee, Wisconsin, and Oklahoma. In these areas it's clear even in non-roach insects (with the exception of invasive species) that a diapause is needed in some form of the insect's life cycle. This is, of course, a genetically defined strategy that allows the insects to go dormant during adverse conditions, which is always at least a 4 month winter in the case of my state. This "hardwiring" is so strong that in these northern genotypes, even when reared in captivity i
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