Siggi_Hartmeyer

Full Members
  • Content Count

    231
  • Joined

  • Last visited

  • Days Won

    18

Siggi_Hartmeyer last won the day on October 15

Siggi_Hartmeyer had the most liked content!

Community Reputation

47 Excellent

Contact Methods

  • Website URL
    http://www.hartmeyer.de
  • ICQ
    0

Profile Information

  • Gender
    Male
  • Location
    Weil am Rhein - Germany
  • Interests
    Our CP collection and private CP-video production

Recent Profile Visitors

4,292 profile views
  1. New in Guinness World Records 2021 The catapult flypaper trap Drosera glanduligera has now been included in the Guinness World Records 2021 as the fastest terrestrial predatory plant. It is actually faster than the VFT. Together with Dr. Simon Poppinga and the team of the Plant Biomechanics Group of the University of Freiburg, Irmgard and I are very happy about this great success of our common research work on the "Diva" (catapult-flypaper trap published 2012 in Plos One). Simon and the participating authors are additionally pleased, because based on the results of their experi
  2. Mantis vs. Sceliphron on Nepenthes bicalcarata. The digger wasp Sceliphron caementarium captures spiders for its brood, so it is quite fortified; however, the adult wasps feed on vegetarian food. These wasps are quite crazy about the nectar on our N. bicalcarata couple. A couple of spontaneously intruded praying mantises lurks from their branches below our greenhouse roof, which inevitably leads to an encounter of the predatory insects. Who is going to become the booty? Here the shreds fly: Exciting pictures from our CP-greenhouse with extra spooky soundtrack. Enjoy!
  3. Welcome to our carnivorous plant speed contest! Four carnivorous genera qualified for our speed contest and they all give their best. Is Aldrovanda able to keep up even against the water resistance? How well does the famous Venus flytrap? Does the sundew that is usually regarded quite sedate have a chance at all in this competition? And what's the story with the southern bladderwort? Examined in detail with the help of time lapse as well as slow motion shots. English subtitles provided, enjoy! Special thanks go to Dr. Simon Poppinga and his team of the Plant Biomechanics Group of the U
  4. Sarracenia leucophylla: Attention Bee Trap (English subtitles) With its shiningly white patterned leaves Sarracenia leucophylla is certainly one of the most distinctive pitcher plants. We observed the impact of this large carnivore's attractivity to insects in the surroundings quite coincidentally in summer 2019. Suddenly, a whole ant colony had vanished that we observed for weeks in the frame of experiments with Venus flytraps. Looking for the reason, we did not only find the missing ants. Thereby, we unfortunately also found many dead honey bees. We kept an eye on this during the season
  5. In literature, Byblis is usually described as a passive flypaper. But new examinations (2018/19) show that the genus possess active moving capture hairs. A highlight for CP-enthusiasts! In 2018, first videos by Dr. Gregory Allan (GB) on Facebook showed an active motion of Byblis trichomes. However, the topic literature describes the carnivorous genus as immobile. To review that behavior, we made own time lapse shots with a microscope that turned out to be surprisingly even for ourselves. They confirm clearly that the unicellular trichome stalks show an active motion down to the leaf surfa
  6. Nepenthes truncata and N. veitchii capture five house mice, but no shrew. This winter, we had a whole shrew family (Soricidae species) in our greenhouse. These predators are not interested in Nepenthes nectar; therefore, none of them became captured. If house mice come for a visit, things look very different. Here is our film on the overall five house mice (Mus musculus), meanwhile captured by Nepenthes inside our greenhouse.
  7. The catapults of the sundew Drosera glanduligera fling passing prey animals in a sensational manner onto the sticky trapping leaves. Already in 2012, we measured and published this enormous - 75 ms - speed for a capture event, in the labs of the Plant Biomechanics Group of the University Freiburg (Germany). In this film, we show again by measurements with Dr. Simon Poppinga at the labs of the bionics specialists in Freiburg, what an amazing force these catapults possess. A single catapult has an average weight of 0.15 mg. The rapidly flung fruit flies in our former experiments weigh 1.74
  8. Vegetarian Carnivores. The first video in our new series "Siggi's CP Info" Is it possible to grow your carnivorous plants with vegetarian diet? Our first film from the new “Siggi’s CP Info” series provides the answer. Carnivorous plants predominantly capture and digest arthropods like insects, spiders or little crustaceans. Some of the largest tropical pitcher plants are even known to eat real meat, mostly small vertebrates like mice or reptiles. But what happens if you feed vegetarian food to the carnivores? Even Charles Darwin pointed out that in times of high pollen abundance the
  9. Never fear! You do not need a chemistry book to understand this film. Showing a bunch of beautiful sundew species and hybrids, we explain really briefly and clear why particular chemical ingredients of the sundews are not only interesting as cough medicine for homeopathy, but also as traits for taxonomy, in a manner as comprehensible for laypersons as possible. The featured chemical analysis (TLC) is helpful for the description of novel species and gains an additional dimension by the fact that most true species produce only one naphthoquinone or none, while hybrids show the chemistr
  10. Early on Boxing Day, we experienced the 2004 Tsunami at Mount Lavinia, Sri Lanka. The day before, we had finished a very successful shooting for our film on Borneo Exotics, Robert Cantley’s famous special nursery for tropical pitcher plants. Only in the evening, we had returned from the highlands. After breakfast, it turned out to be a big stroke of luck that our hotel, recommended by Rob, was situated on a rock, several meters above sea level. Only for that reason nobody became injured there. Filmed from the balcony of our hotel room, our documentary shows with original comments how we experi
  11. Surprise: The Queensland sundews have been screened for their naphthoquinones before (Culham & Gornall 1994) but the chemical diversity within the group has prompted our (Jan Schlauer, Irmgard and me) investigation of the new hybrid ("D. x Andomeda") and, subsequently, a re-evaluation of the published data and comparison of their micro-morphology. Our study found that D. adelae and D. schizandra are both in regard of their chemistry as well as their indumentum clearly closer related than to D. prolifera, which as the only one in the group possesses still remnants of snap-tentacles. Enjoy C
  12. Dionaea Traps Selectively Allow Small Animals to Escape. Our prey capture experiments show that Venus flytraps (Dionaea muscipula) selectively allow small animals to escape by a system of interlocking features that complement each other very efficiently. We documented ants of the species Lasius neglectus (length 3.5 mm) running continuously through open traps of Dionaea, established since more than 20 years outdoors in our garden. To achieve statistical relevant results, we did not only count, identify and measure captured prey. Other than in former publications, we counted also the escaped
  13. Hello Rogier, thanks for your feedback. Yes, it was actually a lot of fun to play with the amazing tentacles during our experiments. Good luck with your plants! Best regards, Siggi.
  14. How to film sundew snap-tentacles. When filming sundew snap-tentacles, some simple measures can be helpful to prepare the recording correctly and to avoid disturbing shaking by unnecessary poking of the tentacle heads. That needs some understanding on their different response times and motion patterns. Since many years, we experimented with catapulting sundews and summarized our experiences now in this brief movie description, providing hints how to proceed with moderate and rapid catapult-flypaper traps. The idea for this film came up after some requests on Facebook how to film such tent