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Future comb jelly research. What Rodriguez-Santiago finds most interesting about the study is the way it calls into question what she thought of as “pretty hard boundaries” between self and other.
Comb jelly, Shedd Aquarium, Chicago For a phylum with relatively few species, ctenophores have a wide range of body plans. [ 22 ] Coastal species need to be tough enough to withstand waves and swirling sediment particles, while some oceanic species are so fragile that it is very difficult to capture them intact for study. [ 19 ]
Pleurobrachia pileus is a small, globular or ovoid comb jelly up to about 2.5 cm (1 in) in length. It has a pair of long tentacles that are used to catch prey and can be retracted into sheaths. It has a pair of long tentacles that are used to catch prey and can be retracted into sheaths.
Cydippida is an order of comb jellies. They are distinguished from other comb jellies by their spherical or oval bodies, and the fact their tentacles are branched, and can be retracted into pouches on either side of the pharynx. The order is not monophyletic, that is, more than one common ancestor is believed to exist. [1]
Beroe cucumis is a predator and mostly feeds on other comb jellies, particularly Bolinopsis infundibulum; these are pulled into the large mouth and swallowed whole. [3]The comb jelly Mnemiopsis leidyi is an invasive species originally native to the western Atlantic coastal waters that was introduced into the Black Sea in the 1980s, with deleterious results to the ecosystem.
Abyssal comb jelly (Beroe abyssicola) swimmingBeroe abyssicola is a ctenophore with a flexible, highly muscular body. Being a predator, B. abyssicola uses its muscular body along with its ctene rows to swim and capture its prey, and uses its wide mouth to swallow its prey whole. [2]
Tentaculata is a class of comb jellies, one of two classes in the phylum Ctenophora. [1] [2] The common feature of this class is a pair of long, feathery, contractile tentacles, which can be retracted into specialised ciliated sheaths. In some species, the primary tentacles are reduced and they have smaller, secondary tentacles.
Beroe gracilis is a voracious predator, feeding almost exclusively on other comb jellies, such as Pleurobrachia pileus. [3] It swims rapidly with its mouth open wide, drawing prey into its pharynx, and processing it with the help of specialised cilia; digestion is extracellular and takes place in the body cavity. [3]