Baby Rhinos!

cacoseraph

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[NOTE this is long. i don't think it is too ranty, per se... just kinda my take on like population statistics and their *potential* impact on the hobby =P
oh, and caveat emptor i spent the last 36.. no 38 hours trying to get a hang of programming 3D environments (and *ahem* testing some of the existing products in a possibly game-like setting) so i am a bit tired punch drunk (oh, and possibly slightly really drunk at this point hehehe) /NOTE]



well, it's not that i think any particular situation is going to turn out a specific way. that is far far beyond my abilities and i hope i am not representing myself as such. i think i do a pretty good job of disclaimering my stuff... though, if you skip too many of my "maybe" and "what about" clauses it could sound fairly like, predictive. i like to think that i am more *descriptive* of possible situations that maybe very well be low likelihood 3+ sigma (3 standard deviations is what... 67is...97.. 99.7 or 99.9 percent UNlikely...) but in sample size of thousands or millions still a concern that is not unreasonable to at least consider

see, the way i figure it is that in our hobby we have what i think of as 4, 5, and probably 6 and maaaybe 7 sigma events happening because of how many of us and our bugs there are

consider an event that is 1:10,000 likelihood of happening... that's pretty unlikely. something like that is probably on the order of winning ~$40,000-$200,000US2009 in a state lottery. that is not something i expect to happen to me or ANYBODY that i know personally ever in my lifetime. but... there are people on this board who have produced 10,000 babies of various things in a year! i probably wasn't far my peak year between all my individual and colony bugs. so that means, in a sense, one of the bugs i produced "won the lottery". now what if we are talking about some crazy bug occurance... a conjoined twin, say (a two tailed scorp or a two assed spider.... i figure those are around 4-5 sigma events, a ~1:10,000 chance)... if it is something benign like two-tails then it is just a neat statistical abstraction made concrete. if it is the likelihood of something horrendous (that also still is a concrete abstraction =P ) then i think it should make all of us at least pause and consider that it is likely that we do have 1:10,000 events sometimes cuz we have 10,000 bugs in a given timeframe.

and when you consider the whole hobby.. there are MILLIONS of births a year! in a certain sense, that allows for 6 or even 7 sigma events. those are... like... events of preposterous proportion. i think something like a... oh dang... those crazy er, bilateral hermaphrodites or whatever... half girl and half boy, like that crazy hench... person on Voltron. you figure something like that is in the neighborhood of 1:100,000 to 1:1,000,000. but you know what? i know of at least two ppl in hobby who have had them... and i freaking know one person who had a more of a 1/3 female 2/3male (both pedipalps were male) tarantula in real life! (p.s. that condition in various arthropods could conceivably be as low as ~1:10,000 i guess... that's not exactly my point, only my example). something like that takes soooo many babies produced and examined to turn up a number of example that probably fits on high school shop teacher's hand =P

and the whole sigma thing doesn't just apply to births.. it applies to EVERYTHING. the whole hobby is absolutely mind boggling in it's like, individual details! so that is the VERY condensed version of why it is silly to think that i could predict what is going to happen in a particular instance with 100% accuracy. i mean, no one can. it might not even exist as a possibility depending on who is right between chemists, physicist, particle physicists, and the q-crew.

i better stop typing before i bounce off the post length limiter... again =P
 

Matt K

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...It looks like Cacoseraph has had WAY too much to drink, while watching way too much science fiction, and reading way too many hypothesese that may or may not be assumption based in between playing way too many video games. ;)

None of which have any bearing on this thread which are baby Macropanesthia rhinoceros and how important it is to 'cross bloodlines', which again in any roaches, it is not. Roaches are one of the few animals that are relatively genetically stable and often unaffected by being host to various bacteriums and virus that do have effects on other creatures / plants, papayas and otherwise.

Papayas.. .huh!
 

roberto

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Congrats on the babies! :D They are the cutest little nibblets. Look like little termites.
 

BrianWI

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Matt,

Look at the reported decline in size of G. Portentosa in colonies. One of the thoughts on that is the genetic selection toward smaller bodies but faster maturing males. One of the ways to correct that in a colony would be by introducing "new blood" of larger males and culling off the smaller. That being true, it shows that inbreeding, even in roaches, could prove to cause undesirable effects to the population. The answer is not so concrete. After all, genetic diversity is what runs every species on the entire planet and evolution as a whole!
 

OldHag

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Well, we can all rest assured that the size of my rhino's is HUGE. They are big, and shiney and fat!! So the babies will be too :D .... and their babies and their babies and their babies! Even into the "My grandpa is my brothers father" stage of inbreeding! (I would be happy just to GET to that stage)
 

Matt K

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Matt,

Look at the reported decline in size of G. Portentosa in colonies. One of the thoughts on that is the genetic selection toward smaller bodies but faster maturing males. One of the ways to correct that in a colony would be by introducing "new blood" of larger males and culling off the smaller. That being true, it shows that inbreeding, even in roaches, could prove to cause undesirable effects to the population. The answer is not so concrete. After all, genetic diversity is what runs every species on the entire planet and evolution as a whole!
That is incorrect.

Gromphadorhina sp. in the wild do not persist in dense colonies. If you take any species of roach, particularly any species that lives in loose colonies or singularly as do Gromphadornia, they will mature at smaller sizes when captively propogated. I have proven this several dozen times over. They are not reducing in size from some genetic recalculation, but rather from hormone transmission/accumulation via contact. Its the same "swarm effect" that drives locusts to plague proportions in Africa. Do I need to reiterate that whole discovery from several years ago? One of my pet peeves is when people start using thier imagination when quoting assumptions about "genetic selection".
:mad:
 

ftorres

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Hello All,
Congrats Michelle. I think your babies will not be as big as the parents are, if they were WC, if they were CB then the babies will be the same size more or less

I noticed this on mine, I have some 4-5 year old CB nymphs and are not as big as my Adult trio.

Anyways, how much are you thinking about selling any of these jewels?

You can PM me or let me know here.

thanks

francisco
 
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BrianWI

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Yes, I would reference such studies. Where are they published? Likely, they are wrong as is your conclusion.


Others you respect have written about the size reduction of males in Portentosa colonies, surprised to hear you say they are wrong.

Studies of cockroaches have found significant effects of inbreeding depression. Most times it manifests itself as reduced reproduction. One reason that roach colonies do fairly well, however, is that cockroaches themselves AVOID breeding siblings, preferring instead to mate with unrelated individuals. My guess is that if such selection is occurring by the roaches themselves, it is for good reason.

I have brought in "stunted" males from large colonies. In the few generations I have, they have not reverted to larger size in less dense numbers. This does NOT support a hormonal component reducing individual size in dense colonies. However, the "mixed supplier" colonies have showed great variety in only a couple generations, including size increase (shape, color, etc. varies more, too).

Again, building ideal colonies likely supports a more diverse genepool. I'd trade rhinos nymphs among breeders over inbreeding siblings over every generation.
 
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Matt K

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So, if we disregard everything I posted, then how would you explain the colonies I have had for ten to fifteen years that are all siblings- no "new blood"- and they all produce at original size as long as I keep them thinned down, and when I let them get crowded they invariably mature much smaller in the next one or two generations? How is it that even lobster roaches, when reared in a colony of, say Diploptera punctata, grow an average of 3/16ths of an inch larger reliably than if in thier own dense colony? And if those offspring are put back in the original colony no 'larger' roaches appear?
This is also true of my G.oblongata, Aeluropoda, G.'grandidieri', and many others. I have worked with well over 100 species of roaches and thier varieties, all with similar results. What species have you tested your theories out with? And for how long?

Explain these please. I would like to know what you think you know.
 

BrianWI

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Supply the data you have collected and recorded, your published articles, I will review them.
 

Matt K

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Supply the data you have collected and recorded, your published articles, I will review them.
Nice try at dodging the questions I posted, but it is still not an answer(s)....

So what are your answers? None? I thought so. And how does your review of my info have anything to do with answering those questions anyway? Nothing? That's right.

The binders of notes and other papers are online in the same place as most of the other info you may not be able to find/ have access to.
 

OldHag

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I couldnt take it anymore and had to count the babies. There were 27 babies!! YAAY!!!! They are REALLY fat! They have been chowing down on something. They look like those honey pot ants.. or really fat termites :D
 

ROACHMAN

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rhinos

hey oldhag good for you I am Back in the world oh yea baby:clap: {D ROACHMAN
 

BrianWI

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Matt, I was simply being nice. I have read your posts on your different "species", only to see them have to be corrected by those who know better. If you have no data to support what you say, simply put, no one has any reason to believe what you say. You may keep many cockroaches, but I am sorry, you supply no valid scientific documenation to anything, just previous erroneous conclusions corrected by others. If you cannot even identify which species of roach you have, how would you supply much else? Matt, you simply keep cockroaches as pets.

One of your favorite authors posts about the reduction in size of male G. Portentosa. Ask him, he has corrected your inaccurate posts before.

Where it stands already is that I have spreadsheets full of recorded info, select colonies of controls and those upon which variation will be studied. Not simply a bucket full of bugs. Armed with an extreme amount of knowledge of genetics, the mathematics behind them and tons of previous studies I have done, I might just turn up something a bit more useful than I've seen you put out, eh?

But back to the original idea, it still would be a good idea to swap offspring among rhino breeders. However, depending on the size of the original import(s), that may not supply a huge genepool either.
 

Matt K

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BrianWI- you may talk a good game but you consistantly fail to answer any questions directed to you and your slander toward others (me in this thread) is pretty laughable. Why is it not obvious to you why authorities in the field won't even return your emails anymore?

You keep reiterating your opinion and yet have not reasoned clearly why you think you are so right about rhinos, but rather keep getting off-topic and being repetitive. I dont keep roaches in buckets or as pets, and would guess have vast records compared to whatever you just learned how to input on a spreadsheet.

Any further comments NOT related to baby rhino roaches will not get a reply from me beuond this point. Feel free to PM me out of this thread if you really want to argue about it.
 
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BrianWI

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Matt, your problem is due to lack of seeing things as they really are. Maybe you just don't have the analytical ability. The reason "you don't get it" is simply that "you don't get it". Lets assume for a bit that G. Portentosas ABSOLUTELY do get smaller in dense conditions due to influence of hormone concentration. The next question would be "do 100% of them get smaller"? If not, what happens if I breed those that don't get smaller in these conditions? Do the percentages rise in a matter consistant with the selections I make for this trait? Wow, suddenly we are back to genetics! In fact, we started with it being something "coded" into the roaches, the only question was "can we select against it"? If so, it would make sense to do so since captive breeding lends iteslf to high population densities.

I agree we should stop here as well, I am not here to school you in genetics. But do please look up "slander", eegads! At least have some clue what it means!

I am simply right about rhinos because there is no arguement FOR trying to linebreed/inbreed rhinos. It is absolutely ignorant to ever inbreed something without a specific purpose in mind or as a necessary evil (lack of diversity available, etc.).
 
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