Night Life of the Yucca: The Story of a Flower and a Moth [Katherine B. Hauth, Kay a description of the relationship between the yucca plant and the yucca moth. Yucca flower, via Google Images. This Venn Diagram explains the ways in which the mutualism between Yucca and Yucca moths (Prodoxidae). In the process, the moth pollinates the yucca flower. What type of symbiotic relationship is this? answer choices. mutualism. commensalism. parasitism.
As she collects the sticky pollen, the yucca moth packs it into a ball and sticks it under her head.
She then flies off to another yucca flower. When she arrives at the second yucca flower, usually one that has very recently opened, she goes straight to the bottom to find the ovary.
The Yucca and its Moth
She opens a small hole in the ovary and lays her eggs inside. Once the eggs are laid, she scrapes a small amount of pollen from her sticky ball with her tentacles, walks to the stigma of the flower, and packs the pollen into tiny depressions within the style.
She may then return to the ovary of the same flower to lay more eggs or fly to another flower. Either way, before she leaves the flower, she marks it with a pheromone a chemical other moths can sense. This helps moderate the number of larva that hatch within each flower, and prevents the plant from aborting the flower altogether, which it will do if too many eggs are laid.
Flowers of soapweed yucca. When the eggs hatch, the larvae feed on yucca seeds within the fruit.
When she arrives at a new plant, she inspects the flowers and chooses the ones that are at the right stage. She can detect the smell of other female moths with her antennae and, if another one has been there already, she searches for another flower. This is good for the plant and for the future babies because, if too many eggs were laid in one flower ovary, the flower would abort and the larvae would starve.
The Yucca and its Moth | The Prairie Ecologist
She lays her eggs in the ovary, no more than a handful; once again, if she laid too many eggs, the flower would abort. Afterwards she goes to the stigma of the flower and carefully removes some pollen from under her chin and deposits it on the stigma.
Now the flower will produce a fruit and enough seeds to feed the larvae as well as ensure the reproduction of the plant. In a few weeks, the larva is fully-grown.
The relationship between the yucca plant and the yucca moth : SC Archive
It drops to the ground; it buries itself and makes a cocoon. It will stay underground until the next spring. However, some pupae remain dormant for more than a year.
If the yucca fails to bloom one year because of weather conditions, there will still be yucca moths around.
Yuccas are used as ornamentals well beyond their original geographic range. The yucca moths have managed to follow the yucca and have enlarged their range east and north as far as the east coast and Alberta and Ontario in Canada.
For Additional Information Pellmyr, Olle.
The yucca moth family. The Natural History of Pollination. Timber Press, Portland, OR. Pollinator of the Month.