Abstract
The larval development of Chirolophis japonicus and Ch. saitone from the yolk-sac stage to the settlement on the bottom is described from waters of Peter the Great Bay, Sea of Japan. The pattern of distribution of melanin pigmentation over the body of larvae in these Chirolophis species is formalized for the first time. It consists of six rows, the aggregation on the top of head, and several single melanophores. Despite the similarity between the species, each of them has its specific features that are manifested mainly as a different number of axial skeleton elements (total number of vertebrae and number of rays in the dorsal and anal fins). A conclusion is made that a reliable diagnostic character to identify larvae of Ch. japonicus and Ch. saitone within the period of their development from hatching to settlement can be the number of melanophores at the base of the anal fin rays.
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Balanov, A.A., Epur, I.V. & Shelekhov, V.A. A Description of Chirolophis japonicus and Ch. saitone (Stichaeidae) Pelagic Larvae from Peter the Great Bay, Sea of Japan. J. Ichthyol. 60, 364–374 (2020). https://doi.org/10.1134/S0032945220030042
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DOI: https://doi.org/10.1134/S0032945220030042