Cyanea versicolor

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Cyanea versicolor
Cyanea versicolor.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Cnidaria
Class: Scyphozoa
Order: Semaeostomeae
Family: Cyaneidae
Genus: Cyanea
Species:
C. versicolor
Binomial name
Cyanea versicolor
Agassiz, 1862

Cyanea versicolor, also known as the dwarf lion's mane jellyfish is a species of jellyfish in the family Cyaneidae.

Contents

Description

From Medusae of the World Vol. III (1910) [1]

"This form bears the same relation to Cyanea arctica var. fulva as fulva does to the northern C. arctica. It is smaller than fulva, but is distinguished especially by its pink coloration. Mature medusae are about 10 mm. in diameter and are found in swarms off the coast between Cape Hatteras, North Carolina, and Cape Canaveral, Florida. They are practically confined to pure open water and do not frequent the harbors. The mature medusae bear many ball-like clusters of developing planulae gathered into the peripheral canals of the gastric space. The gelatinous substance of the disk is translucent milky-blue in color, while the gastro- vascular space, gonads, radial and circular muscles of the subumbrella and the entodermal cores of the tentacles are purplish-pink. The outer parts of the veil-like folds of the palps are amber-brown, while the parts adjacent to the mouth are pink. The concretions of the 8 sense-organs are reddish-brown. The planulae are yellow, but the ephyra is pink. The curtain-like oral fringes are relatively smaller than in Cyanea arctica. However, the chief-distinction of C. versicolor is its peculiar pink coloration. Even in the young ephyra only 2.5 mm. in diameter, the stomach-cavity displays a deep purplish-pink, very different from the pale yellow-colored ephyra of the southern C. fulva. Mature medusae of C. versicolor occur in the winter months along our southern coast. " Among thousands observed by the author during the winter of 1904-05 not more than a dozen lacked the pink coloration and these resembled the variety C.capillata var. fulva. They were, however, swimming among swarms of the typical pink versicolor medusae. The variety versicolor appears to be a well-marked local race of Cyanea capillata."

Range

Marine Ecoregions:

Northern Gulf of Mexico

South Florida/Bahamian Atlantic

Carolinian Atlantic

Virginian Atlantic

Habitat

Coastal Estuarine

Ecology

Feeding: Most zooplankton including ctenophores, hydromedusae and other scyphozoans.

Etymology

versicolor [Latin] = having colors that change

Taxonomy

Agassiz 1862 - sp. nov.

Mayer 1910 [1] - C. capillata var. versicolor

Kramp 1961 - nomen dubium

Russell 1970 - C. versicolor

Brewer 1991 [2] - C. arctica

Jarms et al. 2019 [3] - C. versicolor

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References

  1. 1 2 Mayer, Alfred Goldsborough (1910). Medusae of the world. Washington, D.C: Carnegie institution of Washington. LCCN   10017695. OL   7030844M. Archived from the original on 2016-03-05. Alt URL
  2. Brewer RH. 1991. Morphological differences between, and reproductive isolation of, two populations of the jellyfish Cyanea in Long Island Sound, USA. In: Coelenterate Biology: Recent Research on Cnidaria and Ctenophora. Springer Netherlands, 471–477.
  3. Jarms G, Morandini AC, Schmidt-Rhaesa A, Giere O, Straehler-Pohl I. 2019. World atlas of jellyfish: Scyphozoa except Stauromedusae. Abhandlungen und Verhandlungen des Naturwissenschaftlichen Vereins in Hamburg.