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Dorsal spinule patch variations in the puffer Lagocephalus spadiceus from Japan; revisited evidence for the existence of “spadiceus”- and “wheeleri”-forms

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Abstract

Examination of the dorsal spinule patch in Lagocephalus spadiceus specimens revealed the existence of two intraspecific forms, the “wheeleri”-form, characterized by an elliptical patch, and the “spadiceus”-form, with a rhomboidal patch with a continuous or intermittent posterior extension. The forms were not indicative of sexual dimorphism, although the appearance of a posterior extension of the dorsal patch was apparently growth-related. Ontogenetic studies of both forms, including genetic analyses and cross breeding experiments, should be future considerations.

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References

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Acknowledgements

We express our gratitude to Mrs. Hajime Sakai and Toshitaka Mochizuki for help in collecting materials, to Dr. Yusuke Suda for X-ray photos, to Mr. Hiroaki Fujisawa for help in morphological observation, and to Dr. Graham S. Hardy for English corrections.

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Authors and Affiliations

  1. Department of Applied Aquabiology, National Fisheries University, 2-7-1 Nagata-honmachi, Shimonoseki, Yamaguchi, 759-6595, Japan

    Harumi Sakai, Ryusuke Sakamoto & Hiroyuki Yoshikawa

Authors
  1. Harumi Sakai
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  2. Ryusuke Sakamoto
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  3. Hiroyuki Yoshikawa
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Correspondence to Harumi Sakai.

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Sakai, H., Sakamoto, R. & Yoshikawa, H. Dorsal spinule patch variations in the puffer Lagocephalus spadiceus from Japan; revisited evidence for the existence of “spadiceus”- and “wheeleri”-forms. Ichthyol Res 68, 548–551 (2021). https://doi.org/10.1007/s10228-021-00805-6

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  • DOI: https://doi.org/10.1007/s10228-021-00805-6

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