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Abstract:

Presently only three intraspecific formae are recognized in Fritillaria borealis Lohmann, 1896: typica, intermedia and sargassi, but the characterization of intermedia is imprecise. We re-examine the problem of intraspecific variability in this species on the basis of a morphological study on specimens collected in an extensive area (between 78°29'S and 9°34'N, and between 117°01'E and 36°00'W). Clearly the relative position of the ovary and testis is a distinctive characteristic that separates two groups: A-with a symmetrical arrangement of the gonads and B-with an asymmetrical arrangement of the gonads. The variations observed in each of these groups can be ascribed to different growth and maturation stages of the gonads. The possibility of considering these groups as intraspecific taxa is discussed and we suggest that a better choice is to treat them as separate species as classified by Lohmann (1896) with F. borealis occurring from pole to pole and F. sargassi inhabiting warm and cool waters.

Registro:

Documento: Artículo
Título:Concerning intraspecific taxa in Fritillaria borealis Lohmann (Tunicata, Appendicularia)
Autor:Esnal, G.B.; Capitanio, F.L.; Simone, L.C.
Filiación:Depto. de Ciencias Biológicas, Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Palabras clave:intraspecific taxa; taxonomy; Appendicularia; Fritillaria borealis; Fritillaria borealis intermedia; Fritillaria borealis sargassi; Fritillaria borealis typica; Tunicata
Año:1996
Volumen:59
Número:3
Página de inicio:461
Página de fin:468
Título revista:Bulletin of Marine Science
Título revista abreviado:BULL. MAR. SCI.
ISSN:00074977
CODEN:BMRSA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00074977_v59_n3_p461_Esnal

Referencias:

  • Bückmann, A., Die Appendicularien von den Fahrten der "Meteor", der "Anton Bruun" und der "Discovery" in das Arabische Meer im Rahmen der IIOE (1972) "Meteor" Forschungsergebnisse (D), 10, pp. 1-45
  • Kapp, H., Taxonomic characters used for the distinction of species of Appendicularia, and aid to the identification of appendicularian species (1975) Mitteilung. Hamburg. Zoolog. Mus. Inst., 72, pp. 201-228
  • Esnal, G.B., Apendicularias de la desembocadura del Río de la Plata (1972) Physis, 31 (82), pp. 259-272. , Buenos Aires
  • Apendicularias de las costas argentinas (1973) Physis (Buenos Aires) Secc. A, 32 (85), pp. 267-273
  • Sankarankutty, C., Castro, R.J., Diurnal and seasonal fluctuations of Oikopleura dioica Fol, 1872 (Tunicata, Appendicularia) in the mouth of the River Potengi (North Brazil) (1985) Physis (Buenos Aires) Secc. A, 43 (105), pp. 65-71
  • Fenaux, R., Ecologie et biologie des Appendiculaires méditerranéens (Villefranche-sur-Mer) (1963) Vie et Milieu Suppl., 16, pp. 1-142
  • Synonymie et distribution géographique des Appendiculaires (1966) Bull. Inst. Océanogr. Monaco, 66 (1363), pp. 1-23
  • Les Appendiculaires des mers d'Europe et du bassin méditerranéen (1967) Faune Europe Bassin Médit., 2, pp. 1-116
  • Cycle vital, croissance et production chez Fritillaria pellucida (Appendicularia), dans la baie de Villefranche-sur-Mer, France (1976) Mar. Biol., 34, pp. 229-238
  • Cycle vital d'un Appendiculaire: Oikopleura dioica Fol, 1872. Description et chronologie (1976) Ann. Inst. Océanogr., 52 (NS), pp. 89-101. , Paris
  • Lohmann, H., Die Appendicularien der Plankton-Expedition (1896) Ergebn. Plankton-Exp. Humboldt-Stiftung, 2 (EC), pp. 1-148
  • Die Appendicularien des arktischen und antarktischen Gebiets der warmen Ströme (1905) Zool. Jahrb. Suppl., 8, pp. 353-382
  • Die Appendicularien der Deutschen Tiefsee-Expedition (1931) Ergebn. Deutsch. Tiefsee-Exp. Valdivia 1898-1899, 21 (1), pp. 1-158
  • Bückmann, A., Die Appendicularien der Deutschen Südpolar-Expedition 1901-1903 (1926) Ergebn. Deutsch. Südpolar-Exp., 18, pp. 63-231. , Zoologie 10
  • Van Der Spoel, S., Some problems in intraspecific classification of holoplanktonic animals (1971) Z. Zool. Syst. Evol. Forsch., 9 (2), pp. 107-138
  • Tokioka, T., Some additional notes on the Japanese Appendicularian fauna (1940) Rec. Oceanogr. Works Japan, 11 (1), pp. 1-26
  • Studies on the distribution of Appendicularians and some Thaliaceans of the North Pacific, with some morphological notes (1960) Publ. Seto Mar. Biol. Lab., 8 (2), pp. 351-443

Citas:

---------- APA ----------
Esnal, G.B., Capitanio, F.L. & Simone, L.C. (1996) . Concerning intraspecific taxa in Fritillaria borealis Lohmann (Tunicata, Appendicularia). Bulletin of Marine Science, 59(3), 461-468.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00074977_v59_n3_p461_Esnal [ ]
---------- CHICAGO ----------
Esnal, G.B., Capitanio, F.L., Simone, L.C. "Concerning intraspecific taxa in Fritillaria borealis Lohmann (Tunicata, Appendicularia)" . Bulletin of Marine Science 59, no. 3 (1996) : 461-468.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00074977_v59_n3_p461_Esnal [ ]
---------- MLA ----------
Esnal, G.B., Capitanio, F.L., Simone, L.C. "Concerning intraspecific taxa in Fritillaria borealis Lohmann (Tunicata, Appendicularia)" . Bulletin of Marine Science, vol. 59, no. 3, 1996, pp. 461-468.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00074977_v59_n3_p461_Esnal [ ]
---------- VANCOUVER ----------
Esnal, G.B., Capitanio, F.L., Simone, L.C. Concerning intraspecific taxa in Fritillaria borealis Lohmann (Tunicata, Appendicularia). BULL. MAR. SCI. 1996;59(3):461-468.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00074977_v59_n3_p461_Esnal [ ]