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Thread: Utricularia, section Orchidioides - info sharing & discussion

  1. #161
    Aristoloingulamata Dexenthes's Avatar
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    That is very interesting...

    Sort of unrelated, but I am also curious about feeding of Utricularia and how that affects them? These larger epiphytic/bromeliad species have such large traps it would be no surprise that catching prey is a major component of their success. Anyone ever feed their terrestrial/epiphytic Utricularia? I can't imagine with what, but obviously they catch things in the wild.
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  2. #162
    kulamauiman's Avatar
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    Quote Originally Posted by Dexenthes View Post
    That is very interesting...

    Sort of unrelated, but I am also curious about feeding of Utricularia and how that affects them? These larger epiphytic/bromeliad species have such large traps it would be no surprise that catching prey is a major component of their success. Anyone ever feed their terrestrial/epiphytic Utricularia? I can't imagine with what, but obviously they catch things in the wild.
    usually is you look at the "terrestrial" species you find with of course a few exceptions relatively small traps and if you look at aquatic species you generally find larger traps. The terrestrial species seem to be adapted to use a very thin film of water (also I suspect that is why the terrestrial species tend to have hairy looking traps) and are adapted to catching small prey items like protists and protozoans, rotifers, and the like. It sort of gets odd with the two species that make really huge traps, humboldtii and the other one from Australia that I forget the name of now, bu the latter makes large traps only when submerged....

  3. #163
    Aristoloingulamata Dexenthes's Avatar
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    Just doing some more speculating here. . .

    So the well established roots/tubers/traps in a four inch pot send up leaves that are smallish. When a stolon reaches the ground it sends up larger leaves, perhaps the function of this could be that the original portion of subterranean growth has enough energy both invested in growing more traps/tubers, and also it receives enough energy from its pre-existing leaves. The new portion has less energy being spent on creating new under-ground growth and has more energy being pumped into creating larger foliage that can obtain energy to promote the growth of the newly developing root/trap system.

    I dont know...

    ---------- Post added at 09:18 PM ---------- Previous post was at 09:16 PM ----------

    Quote Originally Posted by kulamauiman View Post
    usually is you look at the "terrestrial" species you find with of course a few exceptions relatively small traps and if you look at aquatic species you generally find larger traps. The terrestrial species seem to be adapted to use a very thin film of water (also I suspect that is why the terrestrial species tend to have hairy looking traps) and are adapted to catching small prey items like protists and protozoans, rotifers, and the like. It sort of gets odd with the two species that make really huge traps, humboldtii and the other one from Australia that I forget the name of now, bu the latter makes large traps only when submerged....
    Well whatever it is that I'm growing, U. reniformis, apparently has pretty large traps, not huge, but definitely capable of catching something...

    Are you thinking of U. volubilis?
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  4. #164
    RL7836's Avatar
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    Quote Originally Posted by kulamauiman View Post
    Can you get some TDS readings of the liquid/water in the bottom of the tank. Maybe build up of nutrients there that is not available to the ones in the net pot?
    I can check, that may at least be a contributing factor...
    Quote Originally Posted by Dexenthes View Post
    Anyone ever feed their terrestrial/epiphytic Utricularia?
    Yup but as with most feeding, you've got to weigh the positive vs negative. The add'l moss growth w/ the large epiphytes isn't too bad - especially since the leaves have long petioles anyway. With the little weedy utrics, it's horrible - I never use ferts with them. I really want to grow humbo w/ dangling traps in water & feed them mosquito larvae & daphnia. I have some of the mini-tanks built but just haven't started them yet ...
    Quote Originally Posted by kulamauiman View Post
    It sort of gets odd with the two species that make really huge traps, humboldtii and the other one from Australia that I forget the name of now...
    I suspect that you're thinking of U. arnhemica - too bad it's an annual (see Bob's photofinder for more cool pics)
    Quote Originally Posted by Dexenthes View Post
    Well whatever it is that I'm growing, U. reniformis, apparently has pretty large traps, not huge, but definitely capable of catching something...
    Supposedly humbo gets traps around 1/4" or so...
    All the best,
    Ron
    You must do the thing you think you cannot do. --- Eleanor Roosevelt

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  5. #165
    Aristoloingulamata Dexenthes's Avatar
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    Quote Originally Posted by RL7836 View Post
    I can check, that may at least be a contributing factor...
    Yup but as with most feeding, you've got to weigh the positive vs negative. The add'l moss growth w/ the large epiphytes isn't too bad - especially since the leaves have long petioles anyway. With the little weedy utrics, it's horrible - I never use ferts with them. I really want to grow humbo w/ dangling traps in water & feed them mosquito larvae & daphnia. I have some of .
    Yeah by feeding I didn't mean fertilizing, I definitely meant like introducing micro-invertebrates into the substrate. (I have no idea how the logistics of this would work...)
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  6. #166
    does this rag smell like chloroform to you? boxofrain's Avatar
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    Quote Originally Posted by Dexenthes View Post
    Yeah by feeding I didn't mean fertilizing, I definitely meant like introducing micro-invertebrates into the substrate. (I have no idea how the logistics of this would work...)
    I tried foliar feeding with Maxsea....bad move, had to flush well after a bad burn on many.
    I just suck some detritus from the bottom of my pond, along with ample water, allow it to settle a little bit and then pour over the Utrics as a "flush feeding".
    I am however, thinking of raising some larger rotifers like volvox for the larger trapped plants such as U. Reniformis.
    "the memories of a man in his old age, are the deeds of a man in his prime"

  7. #167
    RL7836's Avatar
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    Quote Originally Posted by boxofrain View Post
    I am however, thinking of raising some larger rotifers like volvox for the larger trapped plants such as U. Reniformis.
    Someone on CPUK has used Paramecium as a utric food... (IIRC)
    All the best,
    Ron
    You must do the thing you think you cannot do. --- Eleanor Roosevelt

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  8. #168
    RL7836's Avatar
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    U. jamesoniana has developed a flower stalk (with a bud of interesting color) - so I figured it was time for an update. On 010911, I mounted U. jamesoniana on a treefern slab with a clump of soggy, mostly-dead LFS.

    The plant grew and went through several growth/rest cycles (to which I was mostly oblivious until they ended). After waking up from it's most recent one, a flower stalk emerged, along with a bunch of new growth. While most of the growth is obvious, I had no idea of the extent that roots/rolons had invaded the inner reaches of the treefern until roots popped out in two places on the top of the slab. Here's the whole treefern plaque (w/ penny on upper left for perspective):


    Closeup of flowerstalk & bud in upper right area


    The growth has been mostly separated into two areas - upper right & lower left. The upper area stays significantly more dry since the water drains from it quicker. The lower left area has recently exploded with growth

    The arrow is pointing to a 2nd flower stalk which I didn't know existed until I took the treefern plaque out for photos.

    .... and even closer pic showing the tubers


    ... and finally, a pic with the plaque back in it's 'home' in my 75 gal basement tank.


    I'll attempt to follow up with flower pics in a few weeks (hopefully).
    All the best,
    Ron
    You must do the thing you think you cannot do. --- Eleanor Roosevelt

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  9. #169
    just your friendly neighborhood INTJ... amphirion's Avatar
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    very nice ron...i need to up my game....my small sized slabs dont look like they're gonna cut it....that and getting a bigger tank too. T.T
    " You keep using that word. I do not think it means what you think it means." -Inigo Montoya
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  10. #170
    Cthulhu138's Avatar
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    Items I'm selling
    Very nice Ron. I'm just getting into the orchioides Utrics and have recently started establishing a few different kinds of live mosses on cork and tree fern plaques to mount some on. I've had longifolia for quite a while and have quelchii, nelumbifolia and a few more species on the way. I recently got U.reniformis 'Enfant Terrible' (a miniature cultivar) in a trade with another member and it's spreading surprisingly quickly. I see it having the same "weedy" potential as U.longifolia.

    Utricularia reniformis 'Enfant Terrible'
    Utricularia reniformis 'Enfant Terrible'

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