Transoceanic Migrations of Fishlike Animals and Fish: Norm or Exclusion?

Орлов, А. М.; Рабазанов, Н. И.; Никифоров, А. И.

doi:10.1134/s0032945220020125

Cited by 22 publications

(7 citation statements)

References 45 publications

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“…Many teleost fish species are sedentary and territorial, remaining attached to a particular home range for foraging and reproduction which guards them from competitors [ 3 , 4 , 5 , 6 ], and are able to return to their territories after being artificially displaced kilometers away from their usual residence area, even after several months of absence [ 3 , 7 , 8 , 9 , 10 , 11 ]. In addition, other teleost species are able to successfully undertake trans-oceanic journeys [ 12 , 13 , 14 ]. Both territorial attachment and journeys require well-developed spatial cognition capabilities, such as recognizing and remembering landmarks and a terrain’s spatial structure, and the capability of using local and directional information combined with these memories to orient and navigate through the environment.…”

Section: Spatial Cognition In Teleost Fishmentioning

confidence: 99%

Spatial Cognition in Teleost Fish: Strategies and Mechanisms

Rodrı́guez

Vera

Amores

et al. 2021

Animals

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Teleost fish have been traditionally considered primitive vertebrates compared to mammals and birds in regard to brain complexity and behavioral functions. However, an increasing amount of evidence suggests that teleosts show advanced cognitive capabilities including spatial navigation skills that parallel those of land vertebrates. Teleost fish rely on a multiplicity of sensory cues and can use a variety of spatial strategies for navigation, ranging from relatively simple body-centered orientation responses to allocentric or “external world-centered” navigation, likely based on map-like relational memory representations of the environment. These distinct spatial strategies are based on separate brain mechanisms. For example, a crucial brain center for egocentric orientation in teleost fish is the optic tectum, which can be considered an essential hub in a wider brain network responsible for the generation of egocentrically referenced actions in space. In contrast, other brain centers, such as the dorsolateral telencephalic pallium of teleost fish, considered homologue to the hippocampal pallium of land vertebrates, seem to be crucial for allocentric navigation based on map-like spatial memory. Such hypothetical relational memory representations endow fish’s spatial behavior with considerable navigational flexibility, allowing them, for example, to perform shortcuts and detours.

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Section: Spatial Cognition In Teleost Fishmentioning

confidence: 99%

Spatial Cognition in Teleost Fish: Strategies and Mechanisms

Rodrı́guez

Vera

Amores

et al. 2021

Animals

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“…Its presence in this area was only recently reported, but the abundance of this species was considered insignificant [6]. In August 2019, adult walleye pollock were found in large amounts in the western Chukchi Sea, and in September 2019 several specimens were caught in the Laptev Sea [5,[54][55][56][57]. However, there was no detailed description of the records in the latter area.…”

Section: Discussionmentioning

confidence: 99%

“…Only recently there was information about its presence in this area, but the abundance of this species was considered insignificant here [6]. In recent years, adult pollock has been found in large numbers in the western Chukchi Sea [5,[54][55][56][57]. New captures of medium-sized walleye pollock in the Laptev and Kara Seas suggest that individuals of this species at the early life stages from the Bering Sea through the Bering Strait with Pacific inflow [79] are transported to the Chukchi and East Siberian Seas.…”

Section: Discussionmentioning

confidence: 99%

“…Walleye pollock Gadus chalcogrammus Pallas, 1814 is the most widespread benthopelagic fish species of the North Pacific [1,2]. Its range extends from the Chukchi Sea in the north to the waters of Korea, Japan, and California in the south [3][4][5]. There are also occasional records of this species in the North Atlantic and adjacent Arctic, including the Norwegian and Barents seas [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, it is believed that there is an independent population in the Norwegian and Barents seas [6], which can be replenished by individuals from the North Pacific. However, there is another point of view [5], according to which the few records of walleye pollock in the North Atlantic are the result of the transport of its pelagic progeny by currents from the North Pacific to the Arctic through the Bering Strait and further active migrations into the Norwegian and Barents Seas. Thus, until now, there were no data on the occurrence of walleye pollock in the Siberian Arctic, so that it was not possible to draw reliable conclusions about the status of this species in the waters of the Northeast Atlantic.…”

Section: Introductionmentioning

confidence: 99%

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Walleye Pollock Gadus chalcogrammus, a Species with Continuous Range from the Norwegian Sea to Korea, Japan, and California: New Records from the Siberian Arctic

Орлов

Rybakov

Vedishcheva

et al. 2021

JMSE

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The first records of walleye pollock Gadus chalcogrammus Pallas, 1814 in the seas of the Siberian Arctic (the Laptev Sea, the Kara Sea, the southeastern Barents Sea), are documented. Information about the external morphology (morphometric and meristic characters), photos of sagittal otoliths and fish, and data on the sequences of the CO1 mtDNA gene are presented. The results of a comparative analysis indicate that walleye pollock caught in the Siberian Arctic do not differ in principle from North Pacific and North Atlantic individuals. Previous conclusions about the conspecificity of the walleye and Norwegian pollock Theragra finnmarchica are confirmed. New captures of walleye pollock in the Siberian Arctic allow us to formulate a hypothesis about its continuous species’ range from the coasts of Norway in the North Atlantic to the coasts of Korea, Japan, and California in the North Pacific. The few records of walleye pollock in the North Atlantic originate from the North Pacific due to the transport of early pelagic juveniles to the Arctic by currents through the Bering Strait and further active westward migrations of individuals which have switched to the bentho-pelagic mode of life.

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Eastward journey: a second capture and first genetically confirmed record of Greenland shark Somniosus microcephalus in the Laptev Sea (Siberian Arctic)

Orlov,

Orlova

2024

Environ Biol Fish

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Transoceanic Migrations of Fishlike Animals and Fish: Norm or Exclusion?

Cited by 22 publications

References 45 publications

Spatial Cognition in Teleost Fish: Strategies and Mechanisms

Spatial Cognition in Teleost Fish: Strategies and Mechanisms

Walleye Pollock Gadus chalcogrammus, a Species with Continuous Range from the Norwegian Sea to Korea, Japan, and California: New Records from the Siberian Arctic

Eastward journey: a second capture and first genetically confirmed record of Greenland shark Somniosus microcephalus in the Laptev Sea (Siberian Arctic)

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