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In situ observations of the meso-bathypelagic scyphozoan, Deepstaria enigmatica (Semaeostomeae, Ulmaridae). (American Museum novitates, no. 3900)

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dc.contributor.author Gruber, David F.
dc.contributor.author Phillips, Brennan.
dc.contributor.author Marsh, Leigh.
dc.contributor.author Sparks, John S.
dc.date.accessioned 2018-05-09T22:14:43Z
dc.date.available 2018-05-09T22:14:43Z
dc.date.issued 2018-05-09
dc.identifier.uri http://digitallibrary.amnh.org/handle/2246/6874
dc.description 14 pages : color illustrations ; 26 cm. en_US
dc.description.abstract Deepstaria enigmatica (Semaeostomeae: Ulmaridae) is one of the largest and most mysterious invertebrate predators of the deep sea. Humans have encountered this jellyfish on only a few occasions and many questions related to its biology, distribution, diet, environmental tolerances, and behavior remain unanswered. In the 45 years since its formal description, there have been few recorded observations of D. enigmatica, due to the challenging nature of encountering these delicate soft-bodied organisms. Members of Deepstaria, which comprises two described species, D. enigmatica and D. reticulum, reside in the meso-bathypelagic region of the world's oceans, at depths ranging from ~600 to 1750 m. Here we report observations of a large D. enigmatica (68.3 cm length x 55.7 cm diameter) using a custom color high-definition low-light imaging system mounted on a scientific remotely operated vehicle (ROV). Observations were made of a specimen capturing or "bagging" prey, and we report on the kinetics of the closing motion of its membranelike umbrella. In the same area, we also noted a Deepstaria "jelly-fall" carcass with a high density of crustaceans feeding on its tissue and surrounding the carcass. These observations provide direct evidence of singular Deepstaria carcasses acting as jelly falls, which only recently have been reported to be a significant food source in the deep sea. en_US
dc.language.iso en_US en_US
dc.publisher American Museum of Natural History. en_US
dc.relation.ispartofseries American Museum novitates;no.3900.
dc.relation.uri https://doi.org/10.5531/sd.sp.32
dc.subject Deepstaria enigmatica. en_US
dc.subject Ulmariidae. en_US
dc.subject Jellyfishes. en_US
dc.subject Deep-sea ecology. en_US
dc.subject Remote submersibles. en_US
dc.subject Remote sensing. en_US
dc.subject Underwater photography. en_US
dc.subject Revillagigedo Islands Region (Mexico) en_US
dc.subject Mexico. en_US
dc.title In situ observations of the meso-bathypelagic scyphozoan, Deepstaria enigmatica (Semaeostomeae, Ulmaridae). (American Museum novitates, no. 3900) en_US
dc.title.alternative Deepstaria enigmatica. en_US


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  • American Museum Novitates
    Novitates (Latin for "new acquaintances"), published continuously and numbered consecutively since 1921, are short papers that contain descriptions of new forms and reports in zoology, paleontology, and geology. New numbers are published at irregular intervals.

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