Abstract
Components of the lateral line system and their innervation were studied in Odontobutis obscura (Odontobutidae) and Pterogobius elapoides (Gobiidae), which are benthic and pelagic species, respectively. Innervation of the superficial neuromasts constituting the trunk lateral line system by way of three continuous longitudinal series (dorsal, middle, and ventral series: ld, lm, and lv series, respectively) became apparent for the first time. Innervation patterns indicated that the ld and lv series represented a mixture of displaced rows (from lm series) and new additional rows. In O. obscura, the ld and lv series were poorly developed, whereas both series were well developed in the pelagic P. elapoides, possibly as an adaptation to receive stimuli from above and below. Two extremely elongated nerve branches derived from the lateral ramus of the posterior lateral line nerve innervated the ld and lv series, respectively, in P. elapoides. Homologies of the neuromast rows on the head and body were discussed on the basis of their innervation patterns.
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Acknowledgments
M. Tsuboi (Hiroshima University) kindly donated specimens of Pterogobius elapoides. G. Hardy (Ngunguru, New Zealand) read the manuscript and offered helpful comments.
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Asaoka, R., Nakae, M. & Sasaki, K. Description and innervation of the lateral line system in two gobioids, Odontobutis obscura and Pterogobius elapoides (Teleostei: Perciformes). Ichthyol Res 58, 51–61 (2011). https://doi.org/10.1007/s10228-010-0193-z
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DOI: https://doi.org/10.1007/s10228-010-0193-z