E. S. Chertopruda, S. E. Frenkelb, A. A. Novichkovaa, and S. S. Vodop’yanova
a Biological Faculty, Moscow State University, Moscow, 119899 Russia
b Russian Federal Research Institute of Fisheries and Oceanography,
ul. Verkhnyaya Krasnosel’skaya 17, Moscow, 107140 Russia
e-mail: horsax@yandex.ru
Received May 23, 2013; in final form, January 20, 2014
Abstract—On the basis of original data and literature sources, the species composition of Harpacticoida
(Copepoda) in the plankton of the brackish waters of four Far Eastern regions was described: Khabarovsk krai,
Sakhalin Island, Kamchatka Peninsula, and the Commander Islands. The compiled list includes 32 harpacticoid
species of 22 genera and 10 families. The representatives of the typical brackish families Canthocamptidae and
Ectinosomatidae account for about one-third of the total. Six of the species are new to science: 4 species of
Halectinosoma, Amphiascus sp. 1, and Schizopera sp. 1. Cosmopolitan species constitute the major portion of
the fauna (38% of the total number), while a smaller proportion is typical of endemics (25%), as well as species
with the arctic (12%), tropical (9%), and North American (9%) types of areas. There are 17 types of harpacti-
coid taxocenes of the observed water bodies. Also, the influence of the salinity and temperature on these species
complexes was characterized. The hypotheses about the cosmopolitanism of the brackish water fauna and the
intrazonality of the estuarine harpacticoid taxocenes structure were tested. It is shown that the structure of the
genera dominance in the taxocenes allocated for the temperature latitudes of the Far East demonstrates signif-
icant similarity with the arctic and tropical regions.
DOI: 10.1134/S0001437014060034
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