The effect of anosmia on the migration of Atlantic salmon smolts (Salmo salar L.) in freshwater

  title={The effect of anosmia on the migration of Atlantic salmon smolts (Salmo salar L.) in freshwater},
  author={Kjell B. D{\o}ving and Bror Jonsson and Lars Petter Hansen},
4 Citations

Timing of Sea-Run Brown Trout (Salmo trutta) Smolt Migration: Effects of Climatic Variation

By trapping seaward migrating smolts of brown trout, a positive relationship is found between the probability of migration per day and the number of degree-days, change in water level, temperature change during the preceding week, and mean annual fish length, and polynomial multiple regression is found.

Taste Preferences in Fish with Chronic Anosmia

It is concluded that the compensatory processes developing in the taste system of the fish as a result of chronic anosmia do not alter the basic charac- teristics of the taste reception, pointing to stability and consistency of its functional parameters.

Behavioral Taste Response of the Minnow Phoxinus phoxinus (Cyprinidae) to Chemical Signals under Normal Conditions and After Acute and Chronic Anosmia

It was determined that development of compensatory processes does not lead to the recovery of behavioral responses to nonfood (defensive) chemical signals, and it is proposed that partial recovery of the ability to respond to food chemical stimuli in anosmic fish is facilitated by functions of the external taste.

Migration of wild and hatchery reared smolts of Atlantic salmon, Salmo salar L., through lakes

In 1982 and 1983 descending wild Atlantic salmon smolts, Salmo salar L., were caught in a fish-trap and tagged and released at three different sites of the Imsa-Lutsi watercourse and were considerably delayed in their downstream migration compared to the river released Smolts.

Ultrasonic tracking of the movements of atlantic salmon smolts (Salmo salar L) in the estuaries of two Scottish rivers

Ultrasonic telemetry was used to follow the movements of two groups of smolts in the estuaries of two small Scottish rivers. Hatchery reared smolts released into a typical wedge flow, partially mixed

Periodicity in Atlantic salmon Salmo salar L. smolt migration

It is shown that the predominantly nocturnal emigration pattern is evident on occasions in alevin, fry and parr stages also, and the diel periodicity probably represents a seasonal locomotor rhythm which, under changed behavioural and physiological circumstances, results in downstream displacement.

Effect of Olfactory Occlusion on Migrating Silver Salmon (O. kisutch)

The control salmon, unlike those with occluded olfactory pits, showed an excellent ability to repeat their original choice at the stream juncture, interpreted to mean that the operated fish were not able to differentiate between the two streams but were distributing themselves in a random fashion.

Sexual maturation versus immaturity: different tactics with adaptive values in Baltic salmon (Salmo salar L.) male smolts

It is hypothesized that these alternative tactics expressed by salmon male smolts, i.e., sexual maturation combined with a low growth rate while in freshwater compared with sexual immaturity and a high growth rate whilst in sea, are mutually exclusive.

Roles of Olfaction and Vision in Choice of Spawning Site by Homing Adult Chinook Salmon (Oncorhynchus tshawytscha)

Olfaction appeared to be the key sense that directed the return of these homing adult chinook salmon from hatcheries and spawn-taking sites along the lower Columbia River.

Smolt Transformation: Evolution, Behavior, and Physiology

Literature concerned with the appearance of smolts (silvery color, streamlined body form), their physiology (salinity relationships, endocrinology), and their behavior (territorial and schooling) i...