Nagasawa, K. & K. Mizuno. (2022). Argulus matuii (Branchiura: Argulidae) parasitic on yellowfin seabream Acanthopagrus latus in Japan, with a note on the body coloration in an ethanol-preserved argulid specimen. Crustacean Research. 51:31-38.

477663

10.18353/crustacea.51.0_31 [view]

Nagasawa, K. & K. Mizuno

2022

51:31-38.

Publication

Available for editors   [request]

An ovigerous female of Argulus matuii Sikama, 1938 was collected from the body surface of a yellow?n seabream Acanthopagrus latus (Houttuyn, 1782) in a cove facing the Bungo Channel o? Ehime Prefecture, western Japan. This represents a new host record for A. matuii, and the female collected is herein described. This female, which was ?xed and preserved in 70% ethanol, showed a prominent body coloration, i.e., six streaks of yellow fringed with dark brown pigments, on the dorsal surface of the carapace even on 279th day (ca. nine months) after ?xation, but the yellow streaks disappeared and the dark brown fringes were fading on 1675th day (ca. four years and seven months) after ?xation. Thus, this paper reports on the usefulness of those yellow streaks in identi?cation of A. matuii for a certain period after ?xation but also emphasizes the importance of a detailed examination of morphological features in identi?cation of long-term ethanol-preserved argulid specimens. The species is distinguished from the ?ve marine congeners from Japan by its possession of numerous supporting rods in the marginal membranes of the ?rst maxillae.

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