stanislas

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About stanislas

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    http://www.applesnail.net

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  • Gender
    Male
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    Belgium (Europe)
  • Interests
    Observing living creatures, artificial intelligence and neural networks, electronics, reading, working in my garden, photography.

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  1. You do not happen to live near a nuclear facility? In any case, this one looks indeed weird. Do you have many of these kind of patterns in your population?
  2. At least my Schizopilia fissicollis roaches do react when I shine a red light on them. If the light is static, they don't seem to mind. I have most of my roaches under red light at night (so I can watch them). Perhaps roaches to see red light dimly, and if it moves, they react to it.
  3. Lovely! Thanks for sharing these photographs! What temperature do you keep them? And how to you heat the enclosure? Any idea how long gestation time took? I'm hoping to see this happen here this year with my Schizopilia roaches
  4. Same adult roach with cross polarization filters (removes all reflection):
  5. I provided heating with a heating mat at the back of the glass enclosure. So at least for there was gradient. They didn't show a preference. However the whole substrate was quite moist. They did however reside mainly on the drier pieces of bark. The latter did me thinking of excess moisture. That combined with little ventilation allowed fungus growth. So I guess that did them in Well, it's not that they walk around restlessly. Rather nibbling on pieces of bark and fruit and after that getting back to their hiding places. They also do not climb the glass. They seem quite relaxed, but moving around slowly. I make time-lapses with 1 minute intervals, so that makes them look fast. In reality it would be very boring... And the one getting on a leave was the one dying. In fact now they have better ventilation, they are more active. I have the impression that they were rather inactive due to bad circumstances and staying on the dryer parts of the enclosure. Nicolas has a similar experience. He also had some dying and considers it also due to keeping them too moist. They fare better for him with less humidity, at least that's what I understood. Perhaps there is a difference in habitat niche between Lanxoblatta and Schizopilia? Also interesting that the Lanxoblatta prefer vertical surfaces, something the Schizopilia definately do not.
  6. They have all kinds of bark. Plenty of it is rather smooth. They don't seem to be very picky when it comes to the bark types. They also walk around on the bottom. And they haven't shown any preference for vertical positions. In fact they mostly reside under bark laying on the substrate or on top of another bark piece. At night they become quite active and walk over the bottom as well as over the bark pieces. But not in a stressed way, although the adults seem to have active interactions. Probably the males clashing or courting the females? @Hisserdude: How humid do you keep your roaches? In particular the bark roaches?
  7. A few days ago two of my Schizopilia fissicollis nymphes died unexpectantly. One just sat on top of a leave, the other on top of a piece of wood. Not moving.... Which made me suspicious. I have their death on camera (time-lapse). They have been moving around in the hours prior to they demise. Eating, walking, and then slowed down, stopped walking and after a few hours stopped moving altogether. So that made me consider that the condition in their enclosure wasn't, lets say 'optimal' I assumed they preferred a hot, humid environment with a lot of bark, and a substrate with dried leaves. When I took out all roaches and did a thorough overhaul of the terrarium, there was a lot of fungi in the substrate and the wood tended to rot at the fringes... no good. The new setup consists of slightly moist coco peat and a lot of bark pieces on top. I provided better ventilation as well to reduce air stagnation. Basically I will try the classic 'moist corner' setup. Water is provided through fruit and agar blocks. In any case, the roaches are now much more active at night and walk over the whole area. They eat well (fruit and a leaves/grasshoppers/fish food paste smeared on bark). Keeping my fingers crossed! Do other people have similar experiences with keeping their roaches too humid and/or with too little ventilation? In particular with rainforest species? How did you solve it? Is moisture a real problem for roaches?
  8. For some background regarding the expedition these roaches came from: http://www.lemonde.fr/grands-formats/visuel/2015/02/27/objectif-mitaraka-destination-terra-incognita_4582595_4497053.html http://www.lemonde.fr/grands-formats/visuel/2015/02/27/objectif-mitaraka-en-pleine-jungle-la-science-fait-son-nid_4584526_4497053.html http://www.lemonde.fr/planete/visuel/2015/03/06/objectif-mitaraka-episode-3-l-arsenal-entomologique_4588663_3244.html http://www.lemonde.fr/planete/visuel/2015/03/13/objectif-mitaraka-episode-4-chasseurs-d-arbres_4593274_3244.html http://www.lemonde.fr/planete/visuel/2015/03/17/objectif-mitaraka-episode-5-le-maitre-de-la-brousse-capture_4594611_3244.html http://www.lemonde.fr/planete/visuel/2015/03/23/objectif-mitaraka-episode-6-les-tumuc-humac-les-montagnes-imaginaires_4595008_3244.html http://www.lemonde.fr/planete/visuel/2015/03/26/objectif-mitaraka-episode-7-des-ichtyologues-dans-la-jungle_4600654_3244.html http://www.lemonde.fr/planete/visuel/2015/03/28/objectif-mitaraka-episode-8-la-foret-revisitee_4602143_3244.html http://www.lemonde.fr/planete/visuel/2015/04/01/objectif-mitaraka-episode-9-la-fin-d-une-expedition_4606916_3244.html I think I would know where to start if one took me on such expedition.... Roach overload!
  9. They were collected in Mitaraka, French Guiana and send to Muséum national d'Histoire naturelle in Paris. Nicolas Rousseaux (active here on the forum as well) obtained them from them in an agreement to return the adult specimen for the museum collection. http://www.laplaneterevisitee.org/en/219/home http://www.mnhn.fr/en/research-expertise/scientific-expeditions/our-planet-reviewed/guiana-2014-2015 Map, with Mitaraka at the bottom:
  10. A time lapse movies of their nightly activity. If you look careful, you can see one roach molting into adulthood and one nymph getting into the next instar.
  11. And a little bit later:
  12. Third roach molted into adulthood! Seems like it's going fast here. I'm curious how long it will take to get babies...
  13. I came up with a new food idea: Grinded, dried partially decomposed oak leaves mixed with pulverized dried grasshoppers. Made a paste of that and put that on one of the bark pieces. At least some of the Schizopilia roaches seem to eat from it... I'll keep an eye on it to see how much they eat it. My Archimandrita tesselata roaches devoured at once when I presented it to them