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Abstract:

Certain physical factors, substrate type and ice action appear to be important determinants for ascidian distribution. Three different substrate types were sampled at depths between 0-30 m by SCUBA diving: soft bottoms, hard bottoms and moraine deposits. The species found were Aplidium radiatum, Synoicum adareanum, Distaplia cylindrica, Sycozoa gaimardi, Sycozoa sigillinoides, Tylobranchion speciosum, Corella eumyota, Ascidia challengeri, Cnemidocarpa verrucosa, Styela wandeli, Dicarpa insinuosa, Pyura bouvetensis, Pyura discoveryi, Pyura obesa, Pyura setosa, Molgula enodis and Molgula pedunculata. Highest diversity and patchy distribution was found in less stringent environments, where epibiosis is a common phenomenon on stolidobranch ascidians. Differences in stalk development were found in the most abundant species Molgula pedunculata and Cnemidocarpa verrucosa. Ice action may be the main factor that determines the absence of ascidians above 15 m in all the stations sampled.

Registro:

Documento: Artículo
Título:Ascidians (Tunicata, Ascidiacea) of Potter Cove, South Shetland Islands, Antarctica
Autor:Tatian, M.; Sahade, R.J.; Doucet, M.E.; Esnal, G.B.
Filiación:Cátedra de Anat. Comparada, Facultad de Ciencias Exactas, Univ. Nacional de Córdoba, Av. Velez Sarsfield 299, (5000), Córdoba, Argentina
Centro de Zoología Aplicada, Univ. Nacional de Córdoba, C.C. 122, (5000), Córdoba, Argentina
Depto. de Ciencias Biológicas, Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Palabras clave:Antarctica; Ascidiacea; Distribution; Diversity; Ice action; Substrate types; community composition; environmental factor; ice; spatial distribution; substrate; Antarctica, South Shetland Islands, Potter Cove; Aplidium radiatum; Ascidia challengeri; Ascidiacea; Cnemidocarpa verrucosa; Corella eumyota; Dicarpa insinuosa; Distaplia cylindrica; Molgula enodis; Molgula pedunculata; Pyura bouvetensis; Pyura discoveryi; Pyura obesa; Pyura setosa; Styela wandeli; Sycozoa gaimardi; Sycozoa sigillinoides; Synoicum adareanum; Tylobranchion speciosum
Año:1998
Volumen:10
Número:2
Página de inicio:147
Página de fin:152
Título revista:Antarctic Science
Título revista abreviado:Antarct. Sci.
ISSN:09541020
CODEN:ANTSE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09541020_v10_n2_p147_Tatian

Referencias:

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Citas:

---------- APA ----------
Tatian, M., Sahade, R.J., Doucet, M.E. & Esnal, G.B. (1998) . Ascidians (Tunicata, Ascidiacea) of Potter Cove, South Shetland Islands, Antarctica. Antarctic Science, 10(2), 147-152.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09541020_v10_n2_p147_Tatian [ ]
---------- CHICAGO ----------
Tatian, M., Sahade, R.J., Doucet, M.E., Esnal, G.B. "Ascidians (Tunicata, Ascidiacea) of Potter Cove, South Shetland Islands, Antarctica" . Antarctic Science 10, no. 2 (1998) : 147-152.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09541020_v10_n2_p147_Tatian [ ]
---------- MLA ----------
Tatian, M., Sahade, R.J., Doucet, M.E., Esnal, G.B. "Ascidians (Tunicata, Ascidiacea) of Potter Cove, South Shetland Islands, Antarctica" . Antarctic Science, vol. 10, no. 2, 1998, pp. 147-152.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09541020_v10_n2_p147_Tatian [ ]
---------- VANCOUVER ----------
Tatian, M., Sahade, R.J., Doucet, M.E., Esnal, G.B. Ascidians (Tunicata, Ascidiacea) of Potter Cove, South Shetland Islands, Antarctica. Antarct. Sci. 1998;10(2):147-152.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09541020_v10_n2_p147_Tatian [ ]