Crinoid Feeding Strategies: New Insights From Subsea Video And Time-Lapse (Elements of Paleontology)
Cambridge University Press, 6/24/2021
EAN 9781108810074, ISBN10: 1108810071
Paperback, 24 pages, 22.9 x 15.2 x 0.2 cm
Language: English
Originally published in English
Modern videography provides an ever-widening window into subsea echinoderm life with vast potential for new knowledge. Supported by video evidence throughout, this Element begins with time-lapse video made in 1983 on film, using an off-the-shelf camera, flash, and underwater housings. Although quality has now been significantly improved by digital imagery, films from over thirty years ago captured crinoid feeding behavior previously unknown and demonstrated a great potential to learn about many other aspects of their biology. This sequence is followed by several examples of recent digital videography from submersibles of deep-sea crinoids and remotely operated vehicles (ROVs) (stalked and unstalked), as well as close-up video of crinoids in aquaria. These recent studies enabled a new classification of crinoid arm postures, provided detailed views of food particle capture, and revealed a wide range of behaviors in taxa never before seen in life.
1. Feather Stars at Lizard Island, Great Barrier Reef (14O 38' S, 145O 30'E)
2. Arm Postures in Living Crinoids
3. Mechanism for Particle Interception and Transport in Comatulid Crinoid Florometra Serratissima
Presenting a Range of Particle Sizes from Mesocosm Observations
4. Feeding Postures in a Pentacrinoid Florometra and Responses of Democrinus (Bourgeticrinidae) and Cenocrinus (Isocrinidae) to Increased Current.