Eucheilota duodecimalis
Authors/Creators
- 1. University of Córdoba, Faculty of Basic Sciences, Department of Biology, Biotechnology Research Group (GRUBIODEC), Montería, Colombia
- 2. Marine and Coastal Research Institute (INVEMAR), Biodiversity and Marine Ecosystems Program, Inventory, Taxonomy and Biology of Species, Santa Marta, Colombia
- 3. University of Córdoba, Faculty of Basic Sciences, Department of Biology, Natural Products Chemistry Research Group (PRONAT), Montería, Colombia
Description
Eucheilota duodecimalis (A. Agassiz, 1862)
Phialium dodecasema (Haecke, 1879).
Phialium duodecimalis (A. Agassiz, 1862).
Materials
Type status: Other material. Occurrence: individualCount: 2; occurrenceID: F2E14B0B-E093-5DAE-8314-DF7D10B71423; Taxon: kingdom: Animalia; phylum: Cnidaria; class: Hydrozoa; order: Leptothecata; family: Lovenellidae; genus: Eucheilota; Location: country: Colombia; stateProvince: Córdoba; municipality: San Antero; locality: E 3; verbatimDepth: 0.5-3 m; verbatimCoordinates: 9°24'11.47"N, 75°47'43.63"W; Event: eventDate: 02-04-2024; Record Level: collectionCode: LZUC-CD. C-0105
Type status: Other material. Occurrence: individualCount: 93; occurrenceID: A6F45DF1-82B6-5ECF-A360-8308142F2CAE; Location: country: Colombia; stateProvince: Córdoba; municipality: San Antero; locality: E 4; verbatimDepth: 0.5-3 m; verbatimCoordinates: 9°24'55.02"N, 75°46'25.32"W; Event: eventDate: 02-26-2024 / 05 -19-2024
Type status: Other material. Occurrence: individualCount: 178; occurrenceID: A17D4637-EC8E-518F-9456-2172D947F833; Location: country: Colombia; stateProvince: Córdoba; municipality: San antero; locality: E 5; verbatimDepth: 05-3 m; verbatimCoordinates: 9°26'33.73"N, 75°46'1.20"W; Event: eventDate: 02-26-2024 / 05-19-2024
Type status: Other material. Occurrence: individualCount: 120; occurrenceID: E9B9905F-DAAF-523B-BA67-4B22BE70207F; Location: country: Colombia; stateProvince: Córdoba; municipality: San Antero; locality: E 6; verbatimDepth: 0.5-3 m; verbatimCoordinates: 9°26'52.79"N, 75°43'51.47"W; Event: eventDate: 02-26-2024 / 05-19-2024
Type status: Other material. Occurrence: individualCount: 121; occurrenceID: 0CCF5262-5FD5-5EBE-AD64-C86AE6F6983E; Location: country: Colombia; stateProvince: Córdoba; municipality: San antero; locality: E 7; verbatimDepth: 0.5-3 m; verbatimCoordinates: 9°27'28.14"N, 75°48'4.10"W; Event: eventDate: 02-26-2024 / 05-19-2024
Description
Umbrella hemispherical, 0.3-1.1 mm in height and 0.1-1.5 mm in width; mesoglea uniform; manubrium short and narrow; four simple radial canals; four interradial “ gonads ” located in the distal region of the radial canals, near the tentacular swellings. Mature small medusae were recorded with developed germ sacs; broad velum; four large, conical tentacular bulbs, each with a hollow tentacle and one to three pairs of lateral cirri; 12 closed statocysts, three per quadrant, two flanking the tentacular bulbs and one positioned inter-radially (Fig. 2).
Diagnosis
Four tentacles, with conical tentacular bulbs with a pair of lateral cirri; 12 statocysts, three per quadrant; marginal warts absent (Agassiz 1862, Bouillon 1999, Wang et al. 2018).
Distribution
Western Atlantic, from the United States to southern Mexico and South America, from Brazil to Uruguay (Tronolone 2001, Migotto et al. 2002, Tronolone 2007, Nagata et al. 2014, Oliveira et al. 2016 and Ríos 2018). Pacific Ocean, in Ecuador and Mexico (Segura-Puertas et al. 2003, Mujica and Andrade 2019) (See Fig. 3).
Taxon discussion
The observed specimens have a mean size of 0.6 mm in height and 1.0 mm in diameter, which are smaller than sizes reported by other authors (2.5 mm in diameter), such as Kramp (1961) and Bouillon (1999), but similar to that documented by Nagata et al. (2014) (1.3 mm in diameter). In general, E. duodecimalis shows very low morphological variability. The analysed specimens were consistent with the original descriptions provided by Agassiz (1862), Bouillon (1999) and Wang et al. 2018.
Notes
Files
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- LZUC-CD. C- 0105
- Event date
- 2024-04-02 , 2024-05-02
- Verbatim event date
- 2024-04-02 , 2024-05-02
- Scientific name authorship
- A. Agassiz
- Kingdom
- Animalia
- Phylum
- Cnidaria
- Order
- Leptothecata
- Family
- Lovenellidae
- Genus
- Eucheilota
- Species
- duodecimalis
- Taxon rank
- species
- Type status
- Other material
- Taxonomic concept label
- Eucheilota duodecimalis (Agassiz, 1862) sec. Llorente-Vega, Cedeño-Posso & Quirós-Rodríguez, 2025
References
- Agassiz L. Contributions to the natural history of the United States of America https://www.biodiversitylibrary.org/page/16068829 2024-09 - 19 T 00: 14: 21 + 00: 00
- Bouillon J. 1999 Hydromedusae Boltovskoy D. Zooplacton del Atlantico Sur Editorial Backhuys, Leiden Vol. 1 Los Paises Bajos 385 - 466
- Wang C., Xu Z., Guo D., Huang J., Lin M. 2018 Taxonomic notes on Hydroidomedusae (Cnidaria) from the South China Sea V: Families Laodiceidae, Lovenellidae, Malagazziidae, and Mitrocomidae (Leptomedusae) Acta Oceanologica Sinica 37 104 11 10.1007 / s 13131 - 018 - 1309 - y
- Tronolone V. B. 2001 Hidromedusas (Cnidaria, Hydrozoa) do canal de Sao Sebastiao, SP. (Masters Dissertation) Universidade de Sao Paulo Sao Paulo
- Migotto A. E., Marques A. C., Morandini A. C., Silveira F. L. 2002 Checklist of the Cnidaria Medusozoa of Brazil Biota Neotropica 2 1 31 10.1590 / S 1676 - 06032002000100010
- Tronolone V. B. 2007 Estudo faunistico e da distribuicao das hidromedusas (Cnidaria, Hydrozoa) da regiao compreendida entre Cabo Frio (RJ) e Cabo de Santa Marta Grande (SC), Brasil Doctoral Dissertation. Universidade de Sao Paulo Sao Paulo
- Nagata R. M., Nogueira J. M., Haddad M. A. 2014 Faunistic survey of Hydromedusae (Cnidaria, Medusozoa) from the coast of Parana State, Southern Brazil Zootaxa 3768 291 326 10.11646 / zootaxa. 3768.3. 3
- Oliveira O. M., Miranda T. P., Araujo E. M., Ayon P., Cedeno-Posso C. M., Cepeda M. A. A., Cordova P., Cunha A. F., Genzano G. N., Haddad M. A., Mianzan H. W., Migotto A. E., Miranda L. S., Morandini A. C., Nagata R. M., Nascimento K. B., Nogueira M., Palma S., Quinones J., Rodriguez C. S., Scarabino F., Schiariti A., Stampar S., Tronolone V. B., Marques A. C. 2016 Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters Zootaxa 1 1 256 10.11646 / zootaxa. 4194.1. 1
- Rios C. J. A. 2018 Estructura de la comunidad de hidromedusas (Cnidaria: Hydrozoa) en dos lagunas costeras de Veracruz Tesis de maestria. Instituto Politecnico Nacional: Escuela Nacional de Ciencias Biologicas Ciudad de Mexico
- Segura-Puertas L., Suarez-Morales E., Celis L. 2003 A checklist of the Medusae (Hydrozoa, Scyphozoa and Cubozoa) of Mexico Zootaxa 194 1 15 10.11646 / zootaxa. 194.1. 1
- Mujica R. K., Andrade R. C. 2019 Distribucion y ecologia de medusas y sifonoforos en tres estaciones de la zona marino-costera de la Peninsula de Santa Elena, Ecuador Revista Cientifica y Tecnologica UPSE (RCTU) 4 24 33 10.26423 / rctu. v 6 i 2.443
- Kramp P. L. 1961 Synopsis of the Medusae of the world Journal of the marine biological Association of the United Kingdom 40 7 382 10.1017 / S 0025315400007347