Magnetic Discrimination Learning in Rainbow Trout (<i>Oncorhynchus
 mykiss</i>)

Haugh, Cordula V.; Walker, Michael M.

doi:10.1017/s0373463397007595

Cited by 13 publications

(6 citation statements)

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“…The other line of evidence for magnetosensation is based on conditioning experiments. The yellowfin tuna ( Thunnus albacares ) [12]), the rainbow trout [13], [14], the zebrafish ( Danio rerio ) and the Mozambique Tilapia ( Tilapia zillii ) [15]) could be trained to discriminate between two magnetic fields of different intensities. In contrast to that, conditioning to magnetic stimuli failed in the atlantic salmon ( Salmo salar , [16]), the goldfish [17], and the land-locked sockeye salmon [18].…”

Section: Introductionmentioning

confidence: 99%

Magnetic Alignment in Carps: Evidence from the Czech Christmas Fish Market

et al. 2012

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While magnetoreception in birds has been studied intensively, the literature on magnetoreception in bony fish, and particularly in non-migratory fish, is quite scarce. We examined alignment of common carps (Cyprinus carpio) at traditional Christmas sale in the Czech Republic. The sample comprised measurements of the directional bearings in 14,537 individual fish, distributed among 80 large circular plastic tubs, at 25 localities in the Czech Republic, during 817 sampling sessions, on seven subsequent days in December 2011. We found that carps displayed a statistically highly significant spontaneous preference to align their bodies along the North-South axis. In the absence of any other common orientation cues which could explain this directional preference, we attribute the alignment of the fish to the geomagnetic field lines. It is apparent that the display of magnetic alignment is a simple experimental paradigm of great heuristic potential.

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Section: Introductionmentioning

confidence: 99%

Magnetic Alignment in Carps: Evidence from the Czech Christmas Fish Market

et al. 2012

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“…Trout appear to have a magnetic sense, as demonstrated in the laboratory by responsive behaviors modified with magnetic fields (Walker et al 1997). Furthermore, they can detect spatially distinct magnetic stimuli (Haugh et al 1998). …”

Section: Introductionmentioning

confidence: 99%

Open-ocean orientation and return migration routes of chum salmon based on temperature data from data storage tags

Friedland¹,

Walker²,

Davis³

et al. 2001

Mar. Ecol. Prog. Ser.

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Temperature data storage tags were applied to maturing chum salmon Oncorhynchus keta in the Bering Sea during summer 1998, 5 of which were recovered in the coastal waters around Japan. These tags recorded water temperatures experienced by the fish for periods of 62 to 118 d at resolutions of 15 to 30 min. We considered fine-scale aspects of the data by analyzing diel temperature patterns in regard to the migration behavior and orientation of the fish. During the night, temperatures experienced by the fish changed little, and were among the highest temperatures experienced whereas daytime temperatures often showed dramatic changes as the fish changed depth. We analyzed a time series of temperature differences between sunrise and sunset as an indication of progress made by the fish against horizontal thermal gradients, which was assumed to represent changes in latitudinal position. Daytime differences were positive when the fish were migrating to warmer waters, whereas night-time differences were zero or slightly negative. This suggests that the fish made more progress migrating during the day than at night. We also considered large-scale aspects by examining oceanographic data in relation to the temperatures recorded by the tags. Analysis of possible migration routes based on large-scale patterns of sea surface temperature distributions suggests that zonal (east-west) routes are preferred. These data support the hypothesis that chum salmon utilize orientation cues associated with the sun during open ocean migration. However, whether salmon also utilize additional orientation or navigation mechanisms remains to be determined. KEY WORDS: Chum salmon · Data storage tag · Orientation · MigrationResale or republication not permitted without written consent of the publisher

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“…Magnetic conditioning studies with a variety of other species have since then demonstrated sensitivity to magnetic fields in both invertebrates and vertebrates (honey bee: Walker and Bitterman, 1985; yellow-fin tuna: Walker, 1984; rainbow trout: Walker et al , 1997; Haugh and Walker, 1998; short-tailed stingray: Walker et al , 2003). They also revealed some unexpected requirements to be critical for magnetic conditioning to succeed.…”

Section: Conditioning As An Approach To Orientation Behaviourmentioning

confidence: 99%

Conditioning as a Technique for Studying the Sensory Systems Involved in Animal Orientation, Homing and Navigation – a Review

2009

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Knowing what information, and from which sensory cues, is available to an animal regarding its position and direction of movement is vital for unravelling the mechanisms underlying animal navigation. Although considerable progress has been made with traditional field and laboratory techniques, these approaches generally do not provide direct control over the animal's motivation to display its sensory abilities. In contrast, psychologists have for many decades used conditioning as a reliable tool to study sensory perception as well as the mechanisms underlying learning. There has been growing interest in the use of conditioning techniques to investigate responses to stimuli that might be used in guiding movement over long distances. This review seeks to facilitate that development by providing a general introduction to conditioning and the considerations involved in designing robust conditioning experiments together with a perspective for its future use in studying sensory systems in migratory and homing species.

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Magnetic Discrimination Learning in Rainbow Trout (Oncorhynchus mykiss)

Cited by 13 publications

References 0 publications

Magnetic Alignment in Carps: Evidence from the Czech Christmas Fish Market

Magnetic Alignment in Carps: Evidence from the Czech Christmas Fish Market

Open-ocean orientation and return migration routes of chum salmon based on temperature data from data storage tags

Conditioning as a Technique for Studying the Sensory Systems Involved in Animal Orientation, Homing and Navigation – a Review

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