ONE WORM IN THREE SUBSTRATES, NEOICHNOLOGICAL ANALYSES OF U-SHAPE STRUCTURES IN THE GOLFO NUEVO BEACHES, PATAGONIA, ARGENTINA.

Sebastian M. Richiano; Bernardina Richiano Dellatorre

Autores/as

Sebastian M. Richiano Instituto Patagónico de Geología y Paleontología (CONICET-CENPAT)
Bernardina Richiano Dellatorre Field assistant

Resumen

Neoichnology is an actualistic view of how organisms are connected with the place where they live, providing modern models and ideas that serve as analogous. At Chubut province (Patagonia), in the Golfo Nuevo beaches lives a polychaete that inhabits at the same time in rocky abrasion platforms and sandy intertidal sediments. The traces made by the worm can be compared with Caulostrepsis-like in hard substrates while in soft-sediments are comparable with Skolithos- Arenicolites- like structures. The worm builds a “chimney” over the substrate, that can be removed by tidal activity, and incorporated into the surroundings as an “ichnoclast”. The present short note is intended to describe this occurrence and discuss its importance to ichnology.

Citas

Ayranci, K., Dashtgard, S.E., and MacEachern, J.A. (2014). A quantitative assessment of the neoichnology and biology of a delta front and prodelta, and implications for delta ichnology. Palaeogeography, Palaeoclimatology, Palaeoecology 409, 114-134.

Bertling, M., Braddy, S.J., Bromley, R.G., Demathieu, G.R., Genise, J., Mikuláš, R., Nielsen, J.K., Nielsen, K.S.S., Rindsberg, A.K., Schlirf, M., and Uchman, A. (2006). Names for trace fossils: a uniform approach. Lethaia 39, 265-286.

Bromley, R.G. (1996). Trace Fossils. Biology, Taphonomy and Applications (Second Edition). Chapman and Hall, Londres, 361p.

Buatois, L.A., and Mángano, M.G. (2011). Ichnology Organism-Substrate Interactions in Space and Time. Cambridge University Press, p. 358pp.

Cuitiño, J.I., Buono, M.R., Viglino, M. Farroni, N., and Bessone, S. (2019). Factors affecting the preservation and distribution of cetaceans in the lower Miocene Gaiman Formation of Patagonia, Argentina. Palaeogeography, Palaeoclimatology, Palaeoecology 526,110-125.

Dashtgard, S.E. (2011). Linking invertebrate burrow distributions (neoichnology) to physicochemical stresses on a sandy tidal flat: implications for the rock record. Sedimentology 58, 1303-1325.

Dashtgard, S.E., and Gingras, M.K. (2012). Marine Invertebrate Neoichnology. In: Knaust, D. and Bromley, R. (Eds.), Trace fossils as indicators of sedimentary environments. Developments in sedimentology 64, Elsevier, 924 pp.

Davies, R., Minter, N., and Braddy, S. (2007). The neoichnology of terrestrial arthropods. Palaeogeography, Palaeoclimatology, Palaeoecology 255, 284-307.

Genise, J., Melchor, R., Archangelsky, M., Bala, L., Straneck, R., and de Valais, S. (2009). Application of neoichnological studies to behavioural and taphonomic interpretation of fossil bird-like tracks from lacustrine settings: The Late Triassic–Early Jurassic? Santo Domingo Formation, Argentina. Palaeogeography, Palaeoclimatology, Palaeoecology 272, 143-161.

Gingras, M.K., Pemberton, S.G., and Saunders, T. (1999). The Ichnology of Modern and Pleistocene Brackish-Water Deposits at Willapa Bay, Washington: Variability in Estuarine Settings. PALAIOS 14, 352-374.

Hamer, J., and Sheldon, N. (2010). Neoichnology at lake margins: Implications for paleolake systems. Sedimentary Geology 228, 319-327.

Hauck, T.E., Dashtgard, S.E., Pemberton, G., and Gingras, M.K. (2009). Brackish-water ichnological trends in a microtidal barrier island–embayment System, Kouchibouguac National Park, New Brunswick, Canada. PALAIOS 24, 478-496.

Hoffmann, J., Núñez, M., and Piccolo, M. (1997). Características climáticas del Océano Atlántico Sudoccidental. In Boschi, E. (Ed.), El Mar y Sus Recursos Pesqueros, Instituto Nacional de Investigación y Desarrollo Pesquero, pp. 163-193.

La Croix, A., Ayranci, K., and Dashtgard, S. (2022). Neoichnology of siliciclastic shallowmarine environments: Invertebrates, traces, and environmental conditions. Earth-Science Reviews 233, 104170.

Parker, G., Paterlini, M., and Violante, R. (1997). El fondo marino. In Boschi, E. (Ed.), El Mar y sus Recursos Pesqueros, Instituto Nacional de Investigación y Desarrollo Pesquero, pp. 65-88.

Piola, A.R., Palma, E.D., Bianchi, A.A., Castro, B.M., Dottori, M., Guerrero, R.A., Marrari, M., Matano, R.P., Möller Jr., O.O., and Saraceno, M. (2018). In Hoffmeyer, M.S. (Ed.), Plankton Ecology of the Southwestern Atlantic, Physical oceanography of the SW Atlantic shelf: a review. https://doi.org/10.1007/978-3-319-77869-3_2.

Radashevsky, V., Pankova, V., Malyar, V., Neretina, T., Wilson, R., Worsfold, T., Diez, M., Harris, L., Hourdez, S., Labrune, C., Houbin, C., Kind, B., Kuhlenkamp, R., Nygren, A., Bonifácio, P., and Bachelet, G. (2019). Molecular analysis and new records of the invasive polychaete Boccardia proboscidea (Annelida: Spionidae). Mediterranean Marine Science 20, 393-408. doi:http://dx.doi.org/10.12681/mms.20363.

Richiano S., Aguirre, M., Castellanos, I., Davies, K. and Farinati, E. (2017). Do coastal fronts influence bioerosion patterns along Patagonia? Late Quaternary ichnological tools from Golfo San Jorge. Journal of Marine Systems 176, 38-53.

Richiano S., Aguirre, M., and Giachetti, L. (2021). Bioerosion on marine Quaternary gastropods from the southern Golfo San Jorge, Patagonia, Argentina: What do they tell us? Journal of South American Earth Sciences 107 (2021) 103106.

Zonneveld, J.P (2016). Applications of experimental neoichnology to paleobiological and evolutionary problems. PALAIOS 31, 275-279.