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Found 11 results

  1. Ecological Research. Angelina Rowell, James Cook University, Cairns. Studied the relationships between Myrmecodia beccarii and Philidris ants in North Queensland mangroves. She reported (pers. comm.) that resident ants actually castrate their home plants by cutting up its flowers and transporting resultant pieces to their nests within tubers. Angelina found more buds and flowers were produced on ant-colonised, thus well-fed plants, so more fruit should develop on them. Yet, there were more fruits on uncolonised specimens, even though their bud and flower numbers were nutritionally constrained through a lack of ant feeding. Therefore, ants must be removing flowers before pollination, resulting inevitably in lower fruit/seed numbers. Furthermore, Angelina found that ants only removed flowers from their host plant, not from nearby uncolonised plants. Angelina’s Anova statistical analysis, showed that there was no significant difference between the fruit number on colonised versus uncolonised plants (i. e. fruit production is equal). Therefore, ants are not increasing home plant reproductive output. To belabor a point, trophic benefits that the plants are getting from their ants is not transferred to greater seed production because of flower castration. There are greater numbers of leaves on colonised plants, which in theory translates to a greater growth rate in the plant tuber and bigger domatia. But this project did not have enough time allocated to measure increase in plant growth. In summary, more buds, flowers and leaves on colonised plants does not result in more fruit and seed production. Angelina also noted on another thread. "We are looking at the spined form that occurs in the Cairns area. It seems that the majority of the flowers that are left on the plants by the ants develop into fruit. Not 100% sure if it is self pollinating - yet .....The ant interactions with this species is very interesting." I have tried to find more information on line but have not been successful. Attn Dr Guillaume Chomicki. This surely is important to the field of mutualisms.? It is very probable that resident ants are deliberately improving the growth rates of home tubers. Photos Angelina Rowell.
  2. Hello. I have a specimen Myrmecodia sp. Probably Myrmecodia echinata. She's been here for two years. I had various problems with her. Once he had too little light and too much water. Then, some mites and porcellio sp. Damaged her. I healed her for some time. It has a more breathable / breathable substrate, less water and much better light for plants. She released a new impetus and beautiful new leaves. There have been no rootlets for a long time. I do not know why. Is there a chance that it will still release the roots? What could be wrong? I apologize for my bad English.
  3. Derrick

    Avonia journal

    The December 2017 issue of the prestigious German journal Avonia has an article with photos about the ant-plants of Milne Bay Province, Papua New Guinea. It is presented with what I hope is enough background information to encourage others to follow in my footsteps. The next issue will cover part two; the islands.
  4. 34 Myrmecodia tuberosa "dahlii" Kokopo, Gazelle Peninsula, East New Britain Island, PNG..JPG]
  5. From the album: Myrmecodia

    Around 500 meters altitude. Along roadside, disturbed area.

    © Andreas Wistuba

  6. From the album: Myrmecodia

    Around 500 meters altitude.

    © Andreas Wistuba

  7. From the album: Myrmecodia

    Around 500 meters altitude. Along roadside, disturbed area.

    © Andreas Wistuba

  8. From the album: Myrmecodia

    Around 500 meters altitude. Along roadside, disturbed area.

    © Andreas Wistuba

  9. From the album: Myrmecodia

    Around 500 meters altitude. Along roadside, disturbed area.

    © Andreas Wistuba

  10. From the album: Myrmecodia

    Around 500 meters altitude. Along roadside, disturbed area.

    © Andreas Wistuba

  11. From the album: Myrmecodia

    Around 500 meters altitude. Along roadside, disturbed area.

    © Andreas Wistuba

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