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Larval development of Asemichthys taylori (Cottidae)

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Abstract

Larvae of Asemichthys taylori were reared in the laboratory to identifiable juveniles. A preserved series of larvae was characterized in part by fin meristics (X–XI, 14–15 dorsal fin rays; 15 anal fin rays), as well as a combination of the alignment of the jaw tip with the ventral margin of the gut, heavy lateral melanistic pigment except on the caudal peduncle, and a series of postanal ventral melanophores. An internal, horizontal band of melanin extends through the head from the snout to the gut. Hypural plates do not align vertically even after settlement, giving the appearance that the larvae do not complete notochord flexion during their planktonic stage. Larval A. taylori resemble known larvae of Radulinus spp., a genus under which some authors have synonymized the monotypic genus Asemichthys.

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Acknowledgments

We thank the Vancouver Aquarium for support. Collections were carried out under scientific permit issued by Fisheries and Oceans Canada. For this study, animal cultivation protocols were under the scrutiny and approval of the Vancouver Aquarium Board of Directors’ Conservation and Research Committee.

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Authors and Affiliations

  1. Vancouver Aquarium, P.O. Box 3232, Vancouver, BC, V6B 3X8, Canada

    Jeffrey B. Marliave, Daniel I. Kent & John D. Fisher

Authors
  1. Jeffrey B. Marliave
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  2. Daniel I. Kent
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  3. John D. Fisher
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Correspondence to Jeffrey B. Marliave.

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Marliave, J.B., Kent, D.I. & Fisher, J.D. Larval development of Asemichthys taylori (Cottidae). Ichthyol Res 57, 199–203 (2010). https://doi.org/10.1007/s10228-009-0136-8

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  • DOI: https://doi.org/10.1007/s10228-009-0136-8

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