ISSN 1063-0740, Russian Journal of Marine Biology, 2017, Vol. 43, No. 3, pp. 202–208. © Pleiades Publishing, Ltd., 2017.
Original Russian Text © Yu.I. Bakay, 2017, published in Biologiya Morya.
The Ecological and Parasitological Characteristics
of the Golden Redfish, Sebastes norvegicus (Ascanius, 1772)
(Teleostei: Scorpaenidae) that Inhabit the Arctic Ocean Seas
Yu. I. Bakay
Knipovich Polar Research Institute of Marine Fisheries and Oceanography,
Murmansk, 183038 Russia
Received September 29, 2016
Abstract—An ecological, faunistic, and zoogeographical analysis of the parasite fauna of the golden redfish
Sebastes norvegicus (Ascanius, 1772) that inhabit the Barents, Norwegian, and Greenland seas, has been per-
formed. The specifics of formation of the parasite fauna in this species have been studied.
Keywords: golden redfish, Sebastes norvegicus, Arctic Ocean, parasite fauna, formation, zoogeography
The golden redfish, Sebastes norvegicus (Ascanius,
1772) ( = S. marinus L., 1758), as well as other North
Atlantic redfishes of the genus Sebastes (the beaked
redfish, S. mentella Travin, 1951, and the small red-
fish, S. viviparus Krøyer, 1845) that inhabit seas of the
Arctic Ocean, is a near-bottom pelagic, late maturing,
and viviparous species . It has a large range and is
found on the shelf and in shallow waters of the bathyal
zone, from the coasts of Canada and Greenland to the
northern part of Europe and the Svalbard archipelago.
S. norvegicus dwells in waters with high biological pro-
ductivity, created at the junction of the North Atlantic
Current branches with water masses of the Arctic ori-
gin and in areas of coastal upwelling . The shelf of
the Barents Sea and the Svalbard archipelago is used
by S. norvegicus as a nursery and feeding ground,
where mating also occurs. Larvae extrusion by females
is associated with the northwestern coast of Norway
[17, 29, 32]. Earlier, the golden redfish was a complex
species, which comprised two redfish species in the
northeastern and central parts of the range of the
North Atlantic Sebastes. This species was given its
modern status after separating the species S. mentella
Travin, 1951 from it.
Data on parasites of golden redfish are limited to
the information on 13 species identified from the Bar-
ents Sea [2, 21, 27, 41] and 7 species from the White
Sea . The urgent necessity for parasitological stud-
ies on the golden redfish has also arisen due to the
insufficiency of data on its ecology and population
The goal of this work is to identify the ecological
and parasitological characteristics of S. norvegicus that
inhabit the seas of the Arctic Ocean and to use them
for determination of the ecological features and popu-
lation structure of this species.
MATERIALS AND METHODS
In 1999–2013, the parasite fauna was studied in a
total of 237 specimens of Sebastes norvegicus with a
total length of 16–50 cm that were caught at a depth of
70–380 m. The material was collected from six
areas accessible to the study, covering a major part
of the species range in waters adjacent to the Bar-
ents (areas 1–3), Greenland (area 4), and Norwegian
(areas 5–6) seas (Fig. 1), which are referred to as the
Atlantic sector of the Arctic belt in the Arctic Ocean
. The zoning of the water area is based on the
modern concept [14, 24]. The species identification of
the golden redfish was conducted according to .
The conventional methods of collection, fixation,
and making mounts of parasites were used [12, 15].
The indices of degree of invasion were the prevalence
(P), which is the proportion of fish infected by this
parasite species (% of the total number of fish exam-
ined), and the abundance (A), which is the number of
parasites of this species per one examined fish .
The latter (abundance) was not determined for Myxo-
The most frequently occurring parasites of S. nor-
vegicus (with a prevalence predominantly greater than
10%) and those occurring in all the areas were referred
to the species forming the “core” of parasite fauna. In