Tridentiger bifasciatus (Gobiiformes, Gobiidae): nuevo registro de una especie exótica en el río Negro, Argentina

Andrea Diana Tombari

doi:10.30550/j.azl/2272

Authors

Andrea Diana Tombari Centro de Investigación y Transferencia Río Negro (CONICET-UNRN), Universidad Nacional de Río Negro https://orcid.org/0000-0001-8077-2817

DOI:

https://doi.org/10.30550/j.azl/2272

Keywords:

Carmen de Patagones, invasive species, Patagonia, Negro River estuary, shimofuri

Abstract

Biological invasions represent one of the main causes of biodiversity loss,
second only to habitat destruction. These exotic species alter natural
ecosystems and generate environmental impacts. The goby Tridentiger
bifasciatus, native to the northwestern Pacific of Asia, has expanded
its distribution in recent decades. After being recorded in California,
North America, and more recently in Belgium and Argentina (Pehu-
en-Co). The aim of this study is to report the first record of the exotic
goby Tridentiger bifasciatus in the Negro River, Argentina. The finding
took place in the Negro River (-40.803579 S; -62.985768 W), in March
2025. Two specimens of 53 and 84 mm total length were collected
from the riverbank, later analyzed morphologically, and preserved in the
LaByCAA-UNRN collection. The specimens showed distinctive diagnostic
traits, such as dark longitudinal bands, tricuspid teeth, and fused pelvic
fins. The presence of T. bifasciatus in the Negro River may be linked to its
expansion from Pehuen-Co (Buenos Aires). Its generalist nature, broad
diet, and tolerance to low salinity favor its establishment and spread.
Considering that almost half of the fish species in the Negro River are
introduced, this record highlights a concerning increase in the invasion
of exotic fishes, with potentially negative consequences for regional
biodiversity.

Downloads

Download data is not yet available.

References

Alvear, P.A., Rechencq, M., Macchi, P.J., Alonso, M.F., Lippolt, G.E., Denegri, M.A., Vigliano, P.H. (2007). Composición, distribución y relaciones tróficas de la ictiofauna del río Negro, Patagonia Argentina. Ecología austral, 17(2): 231-246.

Bogan, S. (2024). Sorpresivo hallazgo del gobio Shimofuri (Tridentiger bifasciatus) en Sudamérica, reporte de un nuevo pez exótico en las costas de Argentina. Acta Zoológica Lilloana 68 (1): 1-15. DOI: https://doi.org/10.30550/j.azl/1874

Britton, J.R. (2023). Contemporary perspectives on the ecological impacts of invasive freshwater fishes. Journal of Fish Biology 103: 752–764, https://doi.org/10.1111/jfb.15240. DOI: https://doi.org/10.1111/jfb.15240

Elvira, B. (2005). Peces invasores: una amenaza a escala mundial para la biodiversidad. Trofeo Pesca 136: 104-105.

Figueroa, D. E. (2019). Clave de peces marinos del atlántico sudoccidental, entre los 33º s y 56º. Mar del Plata, Buenos Aires, Argentina: INIDEP. https://es.scribd.com/document/636529822/Untitled

Fricke, R., Eschmeyer, W. N., Van der Laan, R. (2023) Eschmeyer’s catalog of fishes: genera, species, references. Available from: http://researcharchive.calacademy. org/research/ichthyology/catalog/fishcatmain.asp.

González Dubox, M.C., Martínez, M., Baggio, R.B., López Greco, L.S., Tombari, A.D. (2024). Primer registro de Holoturoidea (Echinodermata) en la dieta de Genidens barbus (Lacepède, 1803), de distribución patagónica. IV Jornadas Internacionales y VI Nacionales de Ambiente. http://rid.unrn.edu.ar/handle/20.500.12049/12280

Howard, S.R., Booth, M.T. (2016). Range expansion of the Shimofuri goby (Tridentiger bifasciatus) in southern California, with emphasis on the Santa Clara River. California Fish and Game 102(2):45-49.

Migueles, N., Abrameto, M. A., Macchi, P. A., y Solimano, P. J. (2019). Informe del estado ambiental del Río Negro, Argentina. isla 10.13140/RG.2.2.34582.63041.

Pearson, L., Dodd, J.A., Davison, P.I., Copp, G.H. (2025) Invasiveness risks of the shimofuri goby (Tridentiger bifasciatus) in Great Britain. Management of Biological Invasions 16(1): 91–103, https://doi.org/10.3391/mbi.2025.16.1.06 DOI: https://doi.org/10.3391/mbi.2025.16.1.06

Pérez-García, J. (2020). Causas de la pérdida global de biodiversidad. Revista de la Asociación Colombiana de Ciencias Biológicas. 1.183198.0.47499/revistaaccb.v1i32.219. DOI: https://doi.org/10.47499/revistaaccb.v1i32.219

Ulloa, V. A., Saade, V. A., Córdoba Gironde, S. B., Soricetti, M., Hernández, C., Tombari, A. D. (2018). Diversidad íctica del Río Negro, Río Negro. IV Jornadas Patagónicas de Biología - III Jornadas Patagónicas de Ciencias Ambientales VI Jornadas Estudiantiles de Ciencias Biológicas. http://rid.unrn.edu.ar/handle/20.500.12049/12296

Vergara Dal Pont, I.P. (2015). Dinámica costera y análisis del riesgo geológico asociado en la desembocadura del río Negro, provincias de Buenos Aires y Río Negro. Trabajo Final de Licenciatura, UNRN. 105pp. http://rid.unrn.edu.ar/handle/20.500.12049/534

Verhelst P., Verreycken, H. (2023). First record in Europe of the Asian gobiid, shimofuri (marbled) goby Tridentiger bifasciatus Steindachner, 1881. Journal of Fish Biology 102: 1253–1255, https://doi.org/10.1111/jfb.15362 DOI: https://doi.org/10.1111/jfb.15362