Southernmost occurrence of Gobiosoma hemigymnum (Eigenmann & Eigenmann, 1888) on salt marshes of the Bahia Blanca estuary, Argentina: an unusual finding

LUCAS M. MOLINA; CECILIA GONZALEX DUBOX; ANDREA LOPEZ CAZORLA

JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM

CAMBRIDGE UNIV PRESS

Año: 2023 vol. 103 p. 1 - 6

0025-3154

3 Salt marshes do not present favorable conditions for cryptic fish species to inhabit these14 areas, mainly due to dryness and high temperatures at low tides, and scarce places to hide.15 Despite the harsh environmental conditions, we report, for the first time, the occurrence16 of two specimens of the half-naked goby Gobiosoma hemigymnum at high marsh,17 between oysters and Spartina alteniflora stems. In this paper we report evidence of a18 possible positive effect of autogenic ecosystem engineer and invasive species, the pacific19 oyster (Magallana gigas), over the gobid, Gobiosoma hemigymnum, found 600 km away20 from its southernmost normal range.