covid
Buscar en
Revista Mexicana de Biodiversidad
Toda la web
Inicio Revista Mexicana de Biodiversidad Thompsodinium intermedium (Dinophyceae), a freshwater planktonic species in Mexi...
Información de la revista
Vol. 85. Núm. 3.
Páginas 953-956 (septiembre 2014)
Compartir
Compartir
Descargar PDF
Más opciones de artículo
Vol. 85. Núm. 3.
Páginas 953-956 (septiembre 2014)
Open Access
Thompsodinium intermedium (Dinophyceae), a freshwater planktonic species in Mexico
Thompsodinium intermedium (Dinophyceae), una especie planctónica de agua dulce en México
Visitas
1797
José A. Aké-Castillo1
1 Instituto de Ciencias Marinas y Pesquerías, Universidad Veracruzana. Calle Hidalgo 617, Col. Río Jamapa, 94290 Boca del Río, Veracruz, México.
Este artículo ha recibido

Under a Creative Commons license
Información del artículo
Resumen
Texto completo
Bibliografía
Descargar PDF
Estadísticas
Figuras (2)
Tablas (1)
Table 1. Thecal information of Thompsodinium intermedium
Abstract

Morphological description of Thompsodinium intermedium found in a karstic sinkhole Dzityá, in Yucatán is provided. This is the only locality in Mexico where the species has been recorded. Taxonomic circumscription of the species has changed considerably since its original description. An emended diagnosis for the species is provided, as well as for the genus. Worldwide distribution of Thompsodinium intermedium is provided.

Key Words:
dinoflagellate
emended diagnosis
karstic sinkhole
thecae
Palabras clave:
dinoflagelado
enmienda
cenote
teca
Resumen

Se proporciona la descripción morfológica de Thompsodinium intermedium encontrado en el cenote Dzityá en Yucatán, único registro en México. La circunscripción de la especie ha cambiado considerablemente desde su descripción original, por lo que se propone una diagnosis enmendada para la especie y para el género. Se muestra la distribución mundial de Thompsodinium intermedium.

Texto completo

Cenote Dzityá (or Chen-Ha) is a small karstic sinkhole (10.89 x 7.40 m, 4.60 m mean depth) located close to Mérida City, Yucatán Mexico (21.06° N, 89.69° W). In 2 samples of phytoplankton collected in April and May 1999 from this sinkhole, the occurrence of a dinoflagellate was observed. This microalga was studied by light (Leica dmil) and electron microscopes (SEM-JEOL-5600). The morphology indicates that the species belongs to the genus Thompsodinium Bourrelly. Description of the species follows:

Thompsodinium intermedium(Thompson) Bourrely 1970: the cells are 20-32 μm in width and 22-33 μm in length with a ratio width/height of 0.7-0.95, so the cells are ovate or spherical. The cells are dorsoventrally slightly compressed. Many small chloroplasts and a small eyespot are present. Tabulation is Po, x, 4’, 3a, 6’’, 6c, 4s, 5’’’, 2’’’’ (Figs. 1, 2). The second intercalary plate and the third apical plate can be in “remotum” or “contactum” position. The sulcal posterior plate is large extending to the antapex looking like a plate of hypotheca. The third and fourth postcigular plates are large and the antapical plates are dissimilar in size and shape.

Figures 1-2.

Thompsodinium intermedium (scanning electron microscope). 1, Plate arrangement in remotum position; 2, sulcal plates: anterior plate (Sa), small left plate (Ss), right plate (Sd), large anterior plate (Sp). Scale bars 10 μm.

Diagnostic characters of the species have changed in the interpretation of the type of hypothecal and sulcal plates (Table 1). Nowadays, the intercalary plate at hypotheca described by Thompson (1950) is known to be a large posterior sulcal plate (Sp) (Carty 1989). Since the original description is not correct anymore, an emended diagnosis of the species (and therefore the monotypic genus) is necessary to attain an adequate taxonomic circumscription of the species:

Table 1.

Thecal information of Thompsodinium intermedium

Species  Measures (μm)  Plate formula*  Additional character  Location  Reference 
Peridinium intermedium  32-39 long, 33-40 wide  4’, 3a, 6’’, 5’’’, 1p, 2’’’’, remotum or contactum  No  Abandoned clay pit, Chanute, Kansas, USA  Thompson (1950
Peridinium intermedium  30-46 long, 28-40 diameter  4’, 3a, 6’’, 5’’’, 2’’’’  Wing-like rim  Laguna del Tesoro, Cuba  Popovský (1970
Thompsodinium intermedium  No information  4’, 3a, 6’’, 5’’’, 1p, 2’’’’  No  No information  Bourrelly (1970
Peridinium pseudointermedium  36-40 long, 30-33 wide  Po, 4’, 3a, 6’’, 5c, 5’’’, 2’’’’  No  Ivory Coast, Maraoué, Africa  Coute and Iltis (1984
Thompsodinium intermedium  No information  Po, 4’, 3a, 6’’, 6c, 4s, 5’’’, 2’’’’, remotum or conjunctum  Wing like flange  Small ponds in Brazos County, Texas, USA  Carty (1989
Thompsodinium intermedium  32-39 x 33-40  3’, 4a, 6’’, 5’’’, 1p, 2’’’’ or 4’, 3a, 6’’, 5’’’, 2p, 1’’’’  No  USA and Cuba  Popovský and Pfiester (1990
Thompsodinium intermedium  No information  4’,3a, 6”, 5”‘, 2”“  antapical plates with fine teeth subtending the sulcus  Ponds in Tiffin, Ohio, USA  Carty (1993
Thompsodinium intermedium  39.6-46.2 x 29.0-41.8  Po, x, 4’, 3a, 6’’, 5c, 4s, 5’’’, 2’’’’  Sometimes 4 small spines  Lake Buchack Ukraine  Krakhmalny (2011
Thompsodinium intermedium  22-33 length 20-32 wide  Po, x, 4’, 3a, 6’’, 6c, 4s, 5’’’, 2’’’’, remotum or contactum  No  Cenote Dzityá, Mexico  This work 
*

given or based in information provided by the author

Thompsodinium Bourrelly emend. Aké-Castillo, herein.

Cells with tabulation Po, 4’, 3a, 6’’, 6c, 4s, 5’’’, 2’’’’. Arrangement of the 2a and 3’ plates in remotum, contactum or conjuction position.

Type species: Thompsodinium intermedium (Thompson) Bourrely emend. Aké-Castillo, herein.

Thompsodinium intermedium (Thompson) Bourrelly emend. Aké-Castillo, herein.

Basyonym: Peridinium intermediumThompson 1950 Lloydia 13:277-299 p. 298 figs 80-88 (non Peridinium intermedium Playfair 1919).

Synonyms (taxonomic): Peridinium pseudointermedium Couté and Iltis 1984, Thompsodinium pseudointermedium (Couté and Iltis) Krakhmalny 2011.

Ovate to spherical cells with 20-42 μm wide and 22-47 μm in length. Tabulation Po, x, 4’, 3a, 6’’, 6c, 4s, 5’’’, 2’’’’ with a distinctive large posterior sulcal plate.

Lectotype: Figs. 80-88 in Thompson 1950 (designated by Bourrelly 1970).

Type locality: Chanute, Kansas, USA.

Distribution: freshwater environments in USA, Mexico, Belize, Brazil, Ivory Coast and Ukranie (Fig. 3).

Figure 3.

Worldwide distribution of Thompsodinium intemedium. Records in chronological order: 1) Thompson, 1950; 2) Popovský, 1970; 3) Coutè and Iltis, 1984; 4) Carty, 1989; 5) Ngô and Pfiester, 1990; 6) Carty, 1993; 7) Carty and Wujek, 2003; 8) Johansen et al., 2007; 9) Cardoso and Torgan, 2007; 10) Krakhmalny, 2011; 11) this work.

(0,17MB).

The occurrence of this dinoflagellate in Mexico is known until now only from cenote Dzityá since 1988. It is the dominant species (Sánchez-Molina et al., 1994) and causes blooms with cell densities between 254 860 and 550 370 cells/l (Pacheco, 1988).

I thank Víctor Ontiveros who sampled cenote Dzityá; Nery Segovia, from Biblioteca-Ciencias Biológicas y Agropecuarias, UADY; Angela Pacheco from Biblioteca Central, UNAM and Arlette Fuentes from INECOL facilitated acquisition of literature. A. F. Krakhmalny kindly sent basic papers. Tiburcio Láez assisted at the Scanning Electron Microscope Unit, INECOL, A. C.

Literature cited
[Bourrelly, 1970]
P. Bourrelly.
Les algues d’eau douce: initiation á la sistematique. 3, Les algues vertes. Boubée N, (1970), pp. 572
[Carty, 1989]
S. Carty.
Thompsodinium and two Species of Peridiniopsis (Dinophyceae): taxonomic notes based on scanning electron micrographs.
Transactions of the American Microscopical Society, 108 (1989), pp. 64-73
[Carty, 1993]
S. Carty.
Contribution to the dinoflagellate flora of Ohio.
Ohio Journal of Science, 93 (1993), pp. 140-146
[Carty and Wujek., 2003]
S. Carty, D. Wujek..
A new species of Peridinium and new records of dinoflagellates and silica-scaled chrysophytes from Belize.
Caribbean Journal of Science, 39 (2003), pp. 136-139
[Cardoso and Torgan., 2007]
L.S. Cardoso, L.C. Torgan..
Dinoflagelados em diversos habitats e hidroperíodos na zona costeira do sul do Brasil.
Acta Botanica Brasilica, 21 (2007), pp. 411-419
[Coute and Iltis., 1984]
A. Coute, A. Iltis..
Mise au point sur la flore peridiniale Algae, Pyrrhophyta d’eau douce de Cote d’Ivoire.
Revue d’Hydrobiologie Tropicale, 171 (1984), pp. 53-64
[Johansen, et al., 2007]
J.R. Johansen, R.L. Lowe, S. Carty, K. Fuciková, C.E. Olsen, M.H. Fitzpatrick, J.A. Ress, P.C. Furey..
New algal species records for Great Smoky Mountains National Park, with an annotated checklist of all reported algal taxa for the park.
Southeastern Naturalist, Special issue, 1 (2007), pp. 99-134
[Krakhmalny, 2011]
A.F. Krakhmalny.
New record of Thompsodinium intermedium (R.H. Thomps.) Bourr. (Dinophyta) in Ukraine.
International Journal of Algae, 13 (2011), pp. 117-123
[Ngô and Pfiester., 1990]
H.M. Ngô, L.A. Pfiester..
Freshwater dinoflagellates from North Deming Pond, Minnesota, USA.
Transactions of the American Microscopical Society, 109 (1990), pp. 380-398
[Pacheco, 1988]
H.G. Pacheco.
Florecimiento masivo de un dinoflagelado en el cenote Dzityá (Chen-Ha), Yucatán, Tesis, Escuela de Química, Universidad Autónoma de Yucatán, (1988), pp. 57
[Popovský, 1970]
J. Popovský.
Some thecate dinoflagellates from Cuba.
Archiv für Protistenkunde, 112 (1970), pp. 252-258
[Popovský and Pfiester., 1990]
J. Popovský, L. Pfiester..
Dinophyceae (Dinoflagellida). Band 6. Reprinted 2008 Süßwasserflora von Mitteleuropa, Spektrum Akademischer, (1990), pp. 272
[Sánchez-Molina, et al., 1994]
I. Sánchez-Molina, C. Zetina-Moguel, R. Medina-González, L. Pérez-Aranda..
Phytoplankton composition in cenote Dzitya, Yucatán, Mexico. Abstracts of presentations, North American Lake Management Society, Florida.
Lake Reservoir Management, 9 (1994), pp. 111
[Thompson, 1950]
R.H. Thompson.
A new genus and new records of freshwater Pyrrhophyta in the Desmokontae and Dinophyceae.
Lloyd, 13 (1950), pp. 277-299
Copyright © 2014. Universidad Nacional Autónoma de México
Opciones de artículo