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Ophioderma (echinoderm)

Ophioderma is a genus of brittle stars in the family Ophiodermatidae. Research on the Ophiuroid rubicundum species has discovered the creatures oppurtunistic behaviors and ability to adapt in the circumstances of a new given environment. Alongside their high adaptability, their strong feeding responses allow them to thrive in the depths of the coral reefs seen in the western Atlantic.[2]

Ophioderma
Temporal range: Changhsingian–Recent [1]
Ophioderma longicaudum
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Echinodermata
Class: Ophiuroidea
Order: Ophiacanthida
Family: Ophiodermatidae
Genus: Ophioderma
Müller & Troschel, 1840

Reproduction

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Brittle stars can reproduce in three different ways, sexual, asexual, and larval. In sexual reproduction, they engage in broadcast spawning, which is releasing eggs and sperm in the water where external fertilization occurs. The fertilized egg turns into planktonic larvae that drift before settling on the ocean floor; then, they mature into adult brittle stars. During asexual reproduction, they reproduce through regeneration. When an arm is lost, it can regenerate and, in some species, form a new arm. This form of reproduction allows certain species to enhance their survival. And lastly, larval development, following fertilization, brittle star larvae undergo various developmental stages before transitioning into adulthood. In some species, larvae may remain attached to the parent until they can sustain themselves.

Feeding behavior

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Brittle stars have been observed to opportunistically feed on the spawn of various coral species. During coral spawning, the Brittle Star will coil it's arms around gamete bundles released by the coral.[2]

Species

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It includes the following species:[3]

References

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  1. ↑ Twitchett, Richard J.; Oji, Tatsuo (2005). "Early Triassic recovery of echinoderms". Comptes Rendus Palevol. 4 (6–7): 531–542. Bibcode:2005CRPal...4..531T. doi:10.1016/j.crpv.2005.02.006.
  2. 1 2 Williamson, Olivia M.; Mustard, Alexander T.; Bright, Allan J.; Williams, Dana E.; Ladd, Mark C.; Baker, Andrew C. (22 February 2023). "Opportunistic consumption of coral spawn by the ruby brittle star ( Ophioderma rubicundum )". Ecology and Evolution. 13 (5) e10096. Bibcode:2023EcoEv..1310096W. doi:10.1002/ece3.10096. PMC 10196216. PMID 37214603.
  3. ↑ Stöhr S, O'Hara T, eds. (2026). "Ophioderma Müller & Troschel, 1840". World Ophiuroidea Database. World Register of Marine Species. Retrieved 28 March 2026.
  4. ↑ Humara-Gil, Karla J.; Granja-Fernández, Rebeca; Bautista-Guerrero, Eric; Rodríguez-Troncoso, Alma P. (2022). "Overlooked for over a century: Ophioderma occultum sp. nov. (Echinodermata), a new species of brittle star from the Eastern Pacific". Journal of Natural History. 56 (5–8): 365–384. Bibcode:2022JNatH..56..365H. doi:10.1080/00222933.2022.2071179.


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