Ophiomyxa flaccida

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Gondim A, Alonso C, Dias T, Manso C, Christoffersen M (2013) A taxonomic guide to the brittle-stars (Echinodermata, Ophiuroidea) from the State of Paraíba continental shelf, Northeastern Brazil. ZooKeys 307 : 45–96, doi. Versioned wiki page: 2013-06-10, version 35141, https://species-id.net/w/index.php?title=Ophiomyxa_flaccida&oldid=35141 , contributors (alphabetical order): Pensoft Publishers.

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BibTeX:

@article{Gondim2013ZooKeys307,
author = {Gondim, Anne I. AND Alonso, Carmen AND Dias, Thelma L. P. AND Manso, Cynthia L. C. AND Christoffersen, Martin L.},
journal = {ZooKeys},
publisher = {Pensoft Publishers},
title = {A taxonomic guide to the brittle-stars (Echinodermata, Ophiuroidea) from the State of Paraíba continental shelf, Northeastern Brazil},
year = {2013},
volume = {307},
issue = {},
pages = {45--96},
doi = {10.3897/zookeys.307.4673},
url = {http://www.pensoft.net/journals/zookeys/article/4673/abstract},
note = {Versioned wiki page: 2013-06-10, version 35141, https://species-id.net/w/index.php?title=Ophiomyxa_flaccida&oldid=35141 , contributors (alphabetical order): Pensoft Publishers.}

}

RIS/ Endnote:

TY - JOUR
T1 - A taxonomic guide to the brittle-stars (Echinodermata, Ophiuroidea) from the State of Paraíba continental shelf, Northeastern Brazil
A1 - Gondim A
A1 - Alonso C
A1 - Dias T
A1 - Manso C
A1 - Christoffersen M
Y1 - 2013
JF - ZooKeys
JA -
VL - 307
IS -
UR - http://dx.doi.org/10.3897/zookeys.307.4673
SP - 45
EP - 96
PB - Pensoft Publishers
M1 - Versioned wiki page: 2013-06-10, version 35141, https://species-id.net/w/index.php?title=Ophiomyxa_flaccida&oldid=35141 , contributors (alphabetical order): Pensoft Publishers.

M3 - doi:10.3897/zookeys.307.4673

Wikipedia/ Citizendium:

<ref name="Gondim2013ZooKeys307">{{Citation
| author = Gondim A, Alonso C, Dias T, Manso C, Christoffersen M
| title = A taxonomic guide to the brittle-stars (Echinodermata, Ophiuroidea) from the State of Paraíba continental shelf, Northeastern Brazil
| journal = ZooKeys
| year = 2013
| volume = 307
| issue =
| pages = 45--96
| pmid =
| publisher = Pensoft Publishers
| doi = 10.3897/zookeys.307.4673
| url = http://www.pensoft.net/journals/zookeys/article/4673/abstract
| pmc =
| accessdate = 2024-12-23

}} Versioned wiki page: 2013-06-10, version 35141, https://species-id.net/w/index.php?title=Ophiomyxa_flaccida&oldid=35141 , contributors (alphabetical order): Pensoft Publishers.</ref>

See also the citation download page at the journal.


Taxonavigation

Ordo: Ophiurida
Familia: Ophiomyxidae
Genus: Ophiomyxa

Name

Ophiomyxa flaccida (Say, 1825) – Wikispecies link – Pensoft Profile

Description

Disk pentagonal (dd = 5.67 to 12.16 mm). Covered by thick and naked tegument (Fig. 2a). Radial shields enlarged along internal margin. Marginal interradius with a row of 8 to 10 large and overlapping scales (Fig. 2a). Bursal slits short and narrow (Fig. 2b). Oral shields triangular to circular, distal margin rounded. Adoral shields narrow and enlarged laterally. Three enlarged oral papillae on each side of jaw angle, distal free end totally dentate, the two proximal papillae being longer and wider than distal papilla (Fig. 2c). Dorsal arm plate long, narrow, fragmented into two (Fig. 2d). Ventral arm plates small, pentagonal, with a small notch on the distal margins. Four to five small, compressed, arm spines, with denticles on tips. Without tentacle scale (Fig. 2e).

Distribution

Bermuda, the islands off southern Florida, the Bahamas, the Antilles, Mexican Caribbean, Belize, Guatemala, Honduras, Panama, islands off Caribbean Colombia, Venezuela, and Brazil (Devaney 1974[1], Hendler et al. 1995[2], Chavarro et al. 2004[3], Durán-Gonzáles et al. 2005[4], Trujillo-Luna and González-Vallejo 2006[5], Alvarado et al. 2008[6], Hernandéz-Herrejón et al. 2008[7]). In Brazil it has been recorded from the States of Amapá, Pará, Maranhão, Ceará, Rio Grande do Norte, Paraíba, Pernambuco, Alagoas (Gondim et al. in press[8]), Abrolhos islands off southern Bahia (Rathbun 1879[9]), Bahia (Alves and Cerqueira 2000[10]), and Rio de Janeiro (Manso 1993[11]). Intertidal to 367.5 m. In this study it occurred between 11 and 33m.

Remarks

According to Hendler et al. (1995)[2], young individuals live associated with the phytal community, while adults are more commonly found on gravel bottoms from seagrass beds. This species feeds ingesting large portions of algae and sponges, detritus being collected by lateral movements of the arms. We observed specimens with stomachs filled with sponge spicules. Although Ophiomyxidae is a taxonomically problematic family (Franklin and O’Hara 2008[12]), with the placement of several genera being uncertain (Martynov 2010[13]). The identification of Ophiomyxa flaccida is easy, because the taxonomic characters are relatively constant intraspecifically, except for coloration that can vary between geographic areas (green, yellow, orange, red, reddish with a white spot on the disc or brown). Individuals analyzed in this study had a number of interradial scales smaller than observed by Tommasi (1970)[14] for specimens from southeastern Brazil (about 12 scales). This is apparently a rare species in reef environments of Paraiba, and has been reported only in two reefs of this coast (Gondim et al. 2008[15], 2011[16]).

Taxon Treatment

  • Gondim, A; Alonso, C; Dias, T; Manso, C; Christoffersen, M; 2013: A taxonomic guide to the brittle-stars (Echinodermata, Ophiuroidea) from the State of Paraíba continental shelf, Northeastern Brazil ZooKeys, 307: 45-96. doi

Other References

  1. ↑ Devaney D (1974) Shallow-water echinoderms from British-Honduras, with a description of a new species of Ophiocoma (Ophiuroidea). Bulletin of Marine Science 24: 122-164.
  2. ↑ 2.0 2.1 Hendler G, Miller J, Pawson D, Kier P (1995) Sea stars, sea urchins and allies: echinoderms of Florida and the Caribbean. Smithsonian Institution Press, Washington, 390 pp.
  3. ↑ Chavarro S, Zea S, Manuel D (2004) Esponjas y otros microhábitats de ofiuros (Ophiuroidea: Echinodermata) em ambientes arrecifales del Archipiélago de San Bernardo (Caribe Colombiano). Boletín de Investigaciones Marinas y Costeras 33: 27-46.
  4. ↑ Durán-González A, Laguarda-Figueras A, Solís-Marín F, Sánchez B, Ahearn C, Torres-Vega J (2005) Echinoderms (Echinodermata) from the Mexican waters of the Gulf of Mexico. Revista de Biologia Tropical 53: 53-68.
  5. ↑ Trujillo-Luna B, González-Vallejo N (2006) Equinodermos (Echinodermata) de la colección de referencia de bentos costero de ecosur. Universidad y Ciencia Trópico Humedo 22: 83-88.
  6. ↑ Alvarado J, Solís-Marin F, Ahearn C (2008) Echinoderms (Echinodermata) from Central America Caribbean. Revista de Biologia Tropical 56: 37-55.
  7. ↑ Hernandéz-Herrejón L, Solís-Marín F, Laguarda-Figueras A (2008) Ophiuroids (Echinodermata: Ophiuroidea) from the Mexican waters of the Gulf of Mexico. Revista de Biologia Tropical 56: 83-167.
  8. ↑ Gondim A, Dias T, Manso C, Christoffersen M (in press) Annotated checklist of Echinoderms from Maranhão and Piauí States, Northeastern Brazil. Check List.
  9. ↑ Rathbun R (1879) A list of the Brazilian echinoderms, with notes on their distribution. Transactions Academy of Arts and Science 5: 139-158.
  10. ↑ Alves O, Cerqueira W (2000) Echinodermata das praias de Salvador (Bahia, Brasil). Revista Brasileira de Zoologia 17: 543-553. doi: 10.1590/S0101-81752000000200024
  11. ↑ Manso C (1993) Ofiuróides da Plataforma Brasileira. Parte II: Norte do Estado do Rio de Janeiro, Estado do Espírito Santo, Sul do Estado da Bahia e Bancos Royal Charlotte, Hostpur e Davis (Echinodermata: Ophiuroidea). Revista Brasileira de Biologia 35: 189-195.
  12. ↑ Franklin A, O’Hara T (2008) A new species in the genus Ophiomyxa from South-west Australian waters (Echinodermata: Ophiuroidea: Ophiomyxidae). Memoirs of Museum Victoria 65: 57-62.
  13. ↑ Martynov A (2010) Reassessment of the classification of the Ophiuroidea (Echinodermata), based on morphological characters. I. General character evaluation and delineation of the families Ophiomyxidae and Ophiacanthidae. Zootaxa 2697: 1-154.
  14. ↑ Tommasi L (1970) Os ofiuróides recentes do Brasil e de regiões vizinhas. Contribuições do Instituto Oceanográfico, Universidade de São Paulo Série Oceanografia Biológica 20: 1–146. doi: 10.1590/S0373-55241971000100001
  15. ↑ Gondim A, Lacouth P, Alonso C, Manso C (2008) Echinodermata da Praia do Cabo Branco, João Pessoa, Paraíba, Brasil. Biota Neotropica 8: 151–159. http://www.biotaneotropica.org.br/v8n2/pt/abstract?inventory+bn02408022008, doi: 10.1590/S1676-06032008000200016
  16. ↑ Gondim A, Dias T, Campos F, Alonso C, Christoffersen M (2011) Macrofauna bêntica do Parque Estadual Marinho de Areia Vermelha, Cabedelo, Paraíba, Brasil. Biota Neotropica 11: 75–86. http://www.biotaneotropica.org.br/v11n2/en/abstract?article+bn01811022011, doi: 10.1590/S1676-06032011000200009

Images

Figure 2. Species of the families Ophiomyxidae (A–E) and Ophiotrichidae (F–J). Ophiomyxa flaccida. A dorsal view, in detail the marginal interradius with a row of large scales B ventral view C jaw D dorsal view of the arm E ventral view of the arm. Ophiothrix (Ophiothrix) angulata F dorsal view, in detail the radial shields G ventral view H jaw I dorsal view of the arms J ventral view of the arms. Scale bar = 1 mm.
Figure 2. Species of the families Ophiomyxidae (A–E) and Ophiotrichidae (F–J). Ophiomyxa flaccida. A dorsal view, in detail the marginal interradius with a row of large scales B ventral view C jaw D dorsal view of the arm E ventral view of the arm. Ophiothrix (Ophiothrix) angulata F dorsal view, in detail the radial shields G ventral view H jaw I dorsal view of the arms J ventral view of the arms. Scale bar = 1 mm. 
Figure 14. Some ophiurans in their natural habitat. A Ophiomyxa flaccida B Ophiolepis impressa C Ophiothrix angulata D Ophiocoma echinata E Ophioderma cinerea F Ophioderma appressa. Photos by Thelma L. P. Dias.
Figure 14. Some ophiurans in their natural habitat. A Ophiomyxa flaccida B Ophiolepis impressa C Ophiothrix angulata D Ophiocoma echinata E Ophioderma cinerea F Ophioderma appressa. Photos by Thelma L. P. Dias. 
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