Femtosecond laser ablation ICP-MS measurement of otolith Sr:Ca and Ba:Ca composition reveal differential use of freshwater habitats for three amphidromous Sicyopterus (Teleostei: Gobioidei: Sicydiinae) species

Authors

  • C. Lord,

    Corresponding author
    1. Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan
    2. Biologie des Organismes Marins et Ecosystèmes (BOREA UMR CNRS-MNHN 7208), Muséum National d’Histoire Naturelle, Département Milieux et Peuplements Aquatiques, CP-026, 43 rue Cuvier, 75231 Paris, France
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  • H. Tabouret,

    1. Biologie des Organismes Marins et Ecosystèmes (BOREA UMR CNRS-MNHN 7208), Muséum National d’Histoire Naturelle, Département Milieux et Peuplements Aquatiques, CP-026, 43 rue Cuvier, 75231 Paris, France
    2. LCABIE (Laboratoire de Chimie Analytique Bio Inorganique et Environnement), IPREM - UMR 5254, Université de Pau et des Pays de l’Adour Hélioparc, 2 Avenue du Président Angot, 64000 Pau, France
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  • F. Claverie,

    1. LCABIE (Laboratoire de Chimie Analytique Bio Inorganique et Environnement), IPREM - UMR 5254, Université de Pau et des Pays de l’Adour Hélioparc, 2 Avenue du Président Angot, 64000 Pau, France
    2. NIST (National Institute of Standards and Technology) 100 Bureau Drive, Stop 8391, Building 227, Room B360, Gaithersburg, MD 20899, U.S.A.
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  • C. Pécheyran,

    1. NIST (National Institute of Standards and Technology) 100 Bureau Drive, Stop 8391, Building 227, Room B360, Gaithersburg, MD 20899, U.S.A.
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  • P. Keith

    1. Biologie des Organismes Marins et Ecosystèmes (BOREA UMR CNRS-MNHN 7208), Muséum National d’Histoire Naturelle, Département Milieux et Peuplements Aquatiques, CP-026, 43 rue Cuvier, 75231 Paris, France
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Tel.: +81 4 7136 6228; email: claralord@gmail.com

Abstract

The use of freshwater habitats was examined in three amphidromous goby species of the genus Sicyopterus using otolith microchemistry. Two species were endemic to either New Caledonia or Vanuatu whilst the other was widely distributed. Depositional patterns of strontium (Sr) and barium (Ba) in the otolith of adults were analysed with femtosecond laser ablation inductively coupled plasma mass spectrometry (ICP-MS). The Sr:Ca and Ba:Ca results uncovered three different adult behaviours within the freshwater habitat. Some fishes stayed in elevated locations (square profile); others undertook back-and-forth migrations between higher and lower reaches (up-and-down profile), and finally, others stayed in the lower reaches (constant profile). The consequences of these movements to larval survival or competition for food and territory are discussed. This work brings new knowledge on amphidromous behaviour, and it highlights the necessity of multi-elemental analysis to study amphidromy in freshwater systems.

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