I. N. Mukhametov

Сахалинский научно-исследовательский институт рыбного хозяйства и океанографии

We performed a population genetic analysis of 22 Pacific cod sample sets (n = 986) based on the mtDNA control region (599 bp) polymorphism, which made it possible to specify four distinguished groups of this species: (1) within the seaward parts of the Bering Sea and Sea of Okhotsk and northern part of the Pacific Ocean, affected by the Pacific Oce...

Genetic differentiation of the Pacific cod Gadus macrocephalus was studied. Samples from six regions of the Sea of Okhotsk and the Bering Sea were analyzed with two mtDNA genetic markers-gene of cytochrome 1 and the control region (D-loop). Comparative analysis showed significant genetic differentiation between the two groups of samples. The first...

Обобщены данные по пространственному и вертикальному распределению северотихоокеанской колючей акулы (катрана) Squalus suckleyi в тихоокеанских водах Курильских островов и Камчатки из уловов лососевых дрифтерных и ставных сетей и донных тралов в 2005-2008 гг. Приведены новые данные по внешней морфологии особей, выловленных в тихоокеанских водах Кур...

On the basis of materials collected from catches of drift salmon nets in Pacific waters off the Kuril Islands from 2005 to 2006, the age and rate of growth of spiny dogfish Squalus acanthias are considered. Individuals with a length of 67–123 cm and weight of 1140–5970 g aged 10–26 years were represented in catches. In almost all age classes, the l...

The results of investigation are discussed on age and growth of the Pacific halibut Hippolglossus stenolepis, as well as size-age composition of its catches in three regions of the North-Western Pacific—in Navarin area of the Bering Sea, in Pacific waters on the Northern Kurils and south-eastern Kamchatka, of the Southern Kurils—from the end of the...

Data on new captures of juveniles of the yellow anglerfish Lophius litulon off the Southern Kurils are presented. Outer morphological characters of the specimens caught in waters off the Southern Kurils are described in comparison with those of specimens from other regions of the north-western part of the Pacific Ocean. Probable pathways of penetra...

Temporal changes in fish communities of the upper epipelagial of Aniva Bay are considered based on materials of the triple pelagic trawl surveys conducted in July–August 2005. During the observation period, a total of 31 fish and fish-like species from different ecological and biogeographic groups were recorded in trawl catches. The fish communitie...

Data on spiny dogfish caught by salmon driftnets in the Pacific off the Kuril Islands and Kamchatka are summarized. The highest occurrence of this shark was observed off the southeastern Kamchatkan coast and opposite the First Kuril Strait where it occurred in July-November but most frequently in October-November during northward feeding migrations...

Along the east coast of North Kurils, the egg deposits of Careproctus snailfishes (Scorpaeniformes: Liparidae) were revealed in the gill cavity of 9.9% of all golden king crabs, mostly in individuals with carapace of 61–80 mm width (61.6%). The number of Careproctus eggs in the gill cavity of crabs increased with the increase of the carapace width....

This paper summarizes data on spiny dogfish (Squalus acanthias) captures obtained in the Pacific waters off the Kuril Islands and Kamchatka (44°-53°N 145°- 160°E) taken by different fishing gears (salmon drift nets, bottom trawls and stationary nets) in 1993-2006. Totally data on 512 specimens were sampled.

The bulk of diet of the rock sole Lepidopsetta polyxystra in waters of the eastern coast of the northern Kuril Islands and the southern extremity of Kamchatka from September to October 1997 was formed by polychaetes and amphipods (36.8 and 35.1% of the food bolus weight, respectively), which is typical of the feeding of this species, on the whole....

This paper describes the feeding habits of the snailfish Careproctus cf. cyclocephalus (Scorpaeniformes, Liparidae). The diet consisted mostly of crustaceans, among which decapods predominated comprising up to 69.3% of the mean biomass of food organisms. Small shrimp (Eualus biunguis and E. townsendi) dominated the diet making up over 40.9% of the...

A list of fish species found during the expedition conducted by SakhNIRO in February-April 2002 in the northern Kuril waters is given in this paper. There are the data on vertical distribution of bottom and near-bottom fishes, analysis of ratio between species belonging to different ecological and zoogeographic groups by depths, and discussion of p...

The paper describes the feeding of two phenotypically different forms of the snailfish Careproctus roseofuscus (Scorpaeniformes, Liparidae) from the Pacific waters of the northern Kuril Islands and southeastern Kamchatka. The diet in the first form is comprised of actiniae. The second form mostly feeds on fish eggs and the amphipod Metopa majuscula...

This paper presents the results of studies on the morphology of arrowhead flounders, the Kamchatka flounder Atheresthes evermanni (35 specimens), and the American arrowtooth flounder A. stomias (37 specimens) collected in Pacific waters of the northern Kuril Islands and southeastern Kamchatka in 1998–1999. The morphology of the discussed species is...

Peculiarities of feeding of sand lance, ingabiting Sakhalin coastal waters are investigated, based on materials of 1986-1994 years. It is shown, that despite the variety of objects of feeding two groups of crustacean form the basis of food for sand lance. They are Copepoda and Euphausiacea near south-east Sakhalin, including Laperouse Strait, Eupha...

The feeding examination results of 3 halibut species are stated in this article. Collections were taken in survey of bottom fish complex in the North Kurils region during August-November 1997. There were taken extra data about feeding, received during ground trawl survey near the Kurils in autumn 2000. The compound of halibut forages subject and ch...