Ophioderma teres
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Genus: Ophioderma
Name
Ophioderma teres (Lyman, 1860) – Wikispecies link – Pensoft Profile
Description
Disk pentagonal (dd = 5.3 to 12.2 mm). Dorsal and ventral sides of the disk covered by fine and rounded granulation. Radial shields naked and oval (Fig. 6J, K). Oral shields heart-shaped, small and with three rounded lobes. Adoral shields covered by granulation. Madreporite evident. Eight to nine oral papillae on each side of the jaw (Fig. 6L). Dorsal arm plates wider than long and divided in several irregular pieces (two to four) (Fig. 6H). Ventral arm plates quadrangular and rounded. Reduced lateral arm plates. Six to seven short arm spines, all spines are closely equal in size, except the lowest which is longer. Two tentacle scales (Fig. 6I). Four bursal slits per interradius (Fig. 6K). Dorsal side uniformly chocolate-brown in color, with irregular black rings on the disk (Fig. 6G, J). Ventral side yellowish-cream in color (Fig. 6K).
Distribution
Mexico, El Salvador, Nicaragua, Costa Rica, Panama, Ecuador, Colombia and Galapagos Islands (Ziesenhenne 1955[1], Neira and Cantera 2005[2], Alvarado et al. 2010[3]). In Mexico, from the Gulf of California (Baja California Sur, Sonora, Sinaloa), in the Pacific side of Baja California and Baja California Sur, Nayarit, Jalisco, Guerrero and Oaxaca (Solís-Marín et al. 2005[4], Honey-Escandón et al. 2008[5]). From intertidal to 46 m depth (Maluf 1988[6]). In this study, Ophioderma teres was collected on coral reefs from Guerrero and Oaxaca; 9.1 to 10.7 m depth.
Remarks
All the collected material of Ophioderma teres corresponded to juvenile specimens according to the juvenile species description by Lyman (1860)[7]. Adults are distinguished from juveniles by having grain-covered radial shields, a large number of subdivided dorsal plates in the arms (up to five), nine arm spines, and body uniformly dark-brown in color (Lyman 1860[7], Ziesenhenne 1955[1]). Many juvenile specimens have been collected in the Gulf of California, Pacific side of Mexico, Panama, Ecuador and Galapagos Islands (Lyman 1860[7], Caso 1951[8], Ziesenhenne 1955[1]). Several authors suggested that adults of Ophioderma teres might be confused with Ophioderma panamensis and proposed some characteristics to distinguish them: 1) shorter and rounded arms in Ophioderma teres versus larger and flattened arms in Ophioderma panamensis; 2) nine arm spines in Ophioderma teres and 11 in Ophioderma panamensis; 3) dorsal arm plates divided into three-five plates in Ophioderma teres, meanwhile some individuals of Ophioderma panamensis could have up to two; 4) radial shields covered in Ophioderma teres but naked in Ophioderma panamensis; 5) uniform brown color without banded arms in Ophioderma teres but colored and banded arms in Ophioderma panamensis (Lyman 1860[7], Verrill 1867[9], Nielsen 1932[10], Clark HL 1940[11], Ziesenhenne 1955[1]). Similar to Ophioderma panamensis, Ophioderma teres was found on rocks and in sand.
Collected material
GUERRERO: Zacatoso (3 specimens, rock, 9.1 m, 01/06/2012, ICML-UNAM 10581).
OAXACA: Puerto Angelito (1 specimen, rock, 10.7 m, 05/08/2007, MHN 005-4330); El Faro (2 specimens, rock, 23/04/2009, ICML-UNAM 10232); Estacahuite (4 specimens, rock, 18/09/2008, MHN 005-4332; 1 specimen, stony coral, 10.3 m, 04/09/2010, ICML-UNAM 10271); La Mina (2 specimens, rock, 17/04/2008, MHN 005-4331); Boquilla (1 specimen, 02/11/2007, MHN 005-4399); Dos Hermanas (3 specimens, rock, 08/08/2011, ICML-UNAM 10427); Harrys (1 specimen, sand, 9.1 m, 21/10/2011, ICML-UNAM 10439); Copal (1 specimen, sand, 9.1 m, 21/10/2011, ICML-UNAM 10443).
Taxon Treatment
- Granja–Fernández, R; Herrero-Pérezrul, M; López-Pérez, R; Hernández, L; Rodríguez-Zaragoza, F; Jones, R; Pineda-López, R; 2014: Ophiuroidea (Echinodermata) from coral reefs in the Mexican Pacific ZooKeys, 406: 101-145. doi
Other References
- ↑ 1.0 1.1 1.2 1.3 Ziesenhenne F (1955) A review of the genus Ophioderma M. and T. In: Essays in the natural sciences in honor of Captain Allan Hancock on the occasion of his birthday july 26, 1955. (ed. not indicated), University of Southern California, Los Angeles, 185–201.
- ↑ Neira R, Cantera J (2005) Composición taxonómica y distribución de las asociaciones de equinodermos en los ecosistemas litorales del Pacífico Colombiano. Revista de Biología Tropical 53(3): 195-206.
- ↑ Alvarado J, Solís-Marín F, Ahearn C (2010) Echinoderm (Echinodermata) diversity in the Pacific coast of Central America. Marine Biodiversity 40: 45-56. doi: 10.1007/s12526-009-0032-5
- ↑ Solís-Marín F, Laguarda-Figueras A, Durán-González A, Ahearn C, Torres-Vega J (2005) Equinodermos (Echinodermata) del Golfo de California, México. Revista de Biología Tropical 53(3): 123-137.
- ↑ Honey-Escandón M, Solís-Marín F, Laguarda-Figueras A (2008) Equinodermos (Echinodermata) del Pacífico Mexicano. Revista de Biología Tropical 56(3): 57-73.
- ↑ Maluf L (1988) Composition and distribution of the Central Eastern Pacific Echinoderms. Natural History Museum of Los Angeles County, Technical Reports 2: 1-242.
- ↑ 7.0 7.1 7.2 7.3 Lyman T (1860) Descriptions of new Ophiuridae, belonging to the Smithsonian Institution and to the Museum of Comparative Zoology at Cambridge. Proceedings of the Boston Society of Natural History 7: 193–204, 252–262.
- ↑ Caso M (1951) Contribución al conocimiento de los ofiuroideos de México. I. Algunas especies de ofiuroideos litorales. Anales del Instituto de Biología, UNAM 22(1): 219-312.
- ↑ Verrill A (1867) Notes on the Echinoderms of Panama and West Coast of America, with descriptions of new genera and species. Transactions of the Connecticut Academy of Arts and Sciences 1(2): 251-322.
- ↑ Nielsen E (1932) Ophiurans from the Gulf of Panama, California, and the Strait of Georgia. Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening 91: 241-346.
- ↑ Clark H (1940) Notes on Echinoderms from the West Coast of Central America. Eastern Pacific Expeditions of the New York Zoological Society. Zoologica 25(3): 331-352.
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