Effect of light intensity on the locomotor activity rhythm of Talitrus saltator (Montagu 1808) from Korba Beach

2017 ◽  
Vol 49 (5) ◽  
pp. 735-745 ◽  
Author(s):  
Bohli-Abderrazek Dhouha ◽  
Jelassi Raja ◽  
Morgan Elfed ◽  
Nasri-Ammar Karima
Keyword(s):  
Locomotor Activity ◽  
Light Intensity ◽  
Activity Rhythm ◽  
Locomotor Activity Rhythm ◽  
Talitrus Saltator ◽  
Effect Of Light

The Effects of Low Temperature Upon the Locomotor Activity Rhythm of Talitrus Saltator (Montagu) (Crustacea: Amphipoda)

1972 ◽  
Vol 57 (2) ◽  
pp. 393-399
Author(s):  
P. K. BREGAZZI
Keyword(s):  
Locomotor Activity ◽  
Low Temperature ◽  
Mode Of Action ◽  
Activity Rhythm ◽  
Inhibitory Factor ◽  
Locomotor Rhythm ◽  
Locomotor Activity Rhythm ◽  
Complete Cessation ◽  
Maximum Delay ◽  
Talitrus Saltator

1. Chilling Talitrus causes a complete cessation of locomotor activity and a delay in the appearance of successive activity peaks following return to normal temperatures. Maximum delay occurs if chilling begins during inactivity and is about equal to the duration of the chill. At other times the delay is less than the duration of the chill. 2. It is postulated that an inhibitory factor is concerned in the control of the locomotor rhythm of Talitrus, and a model is proposed to describe its possible mode of action.

The endogenous locomotor activity rhythm of four supralittoral peracarid crustace

1983 ◽  
Vol 63 (2) ◽  
pp. 481-492 ◽  
Author(s):  
John A. Williams
Keyword(s):  
Locomotor Activity ◽  
Activity Rhythm ◽  
Circadian Pattern ◽  
Crustacean Species ◽  
Emergence Pattern ◽  
Locomotor Activity Rhythm ◽  
Talitrus Saltator ◽  
Locomotor Rhythms ◽  
Endogenous Component ◽  
Periodogram Analysis

The ‘strength’ of the endogenous locomotor activity rhythm of four peracarid crustacean species, denned by the precision and persistence of the rhythm, was examined with particular reference to a ‘burrowing’ versus epifaunal supralittoral life-style. The ‘strength’ of the endogenous component of the activity rhythm was also illustrated using a modified periodogram analysis. In all species, the talitrid amphipods Talitrus saltator, Talorchestia deshayesi, Orchestra gammarella and the oniscoid isopod Ligia oceanica, the laboratory-monitored rhythm and the field emergence pattern displayed a nocturnal, circadian pattern with no clear evidence of any circa-tidal influence. The precision and particularly the persistence of the rhythm of the sand-shore burrowing species T. saltator and T. deshayesi are especially well developed, although a ‘strong’ endogenous component is present in the rhythm of all four species. The significance of the endogenous locomotor rhythms is considered with respect to the supralittoral ecology of the species.

Rhythmic Behaviour of the Intertidal Amphipod Bathyporeia Pelagica

1970 ◽  
Vol 50 (4) ◽  
pp. 1057-1068 ◽  
Author(s):  
A. A. Fincham
Keyword(s):  
Light Intensity ◽  
Rocky Shore ◽  
Activity Rhythm ◽  
Foraging Activity ◽  
Corophium Volutator ◽  
Inhibiting Effect ◽  
Talitrus Saltator ◽  
Nocturnal Foraging ◽  
Controlled Illumination ◽  
Effect Of Light

Several authors have studied the rhythmic behaviour of amphipods, including Papi (1955) who demonstrated an endogenous solar time sense in Talitrus saltator which was used for navigation. Talitrids were also investigated by Featherston & Maclntyre (1957) who suggested that changes in light intensity triggered the nocturnal foraging activity. Enright (1961, 1962, 1963) tested the effects of pressure, temperature, light intensity, absence of sand and shaking on rhythmic behaviour of the intertidal and in-faunal amphipod Synchelidium. The activity rhythm of Corophium volutator has been reported by Morgan (1965) in which a peak occurred on the early ebb. Various rocky shore Peracarida including species of Gammarus also perform vertical migrations into the surf at night (Jansson & Källander, 1968); the inhibiting effect of light was proven by experiments with controlled illumination.

The Locomotor Activity Rhythm of Talitrus Saltator (Montagu) (Crustacea, Amphipoda)

1972 ◽  
Vol 57 (2) ◽  
pp. 375-391
Author(s):  
P. K. BREGAZZI ◽  
E. NAYLOR
Keyword(s):  
Locomotor Activity ◽  
Dark Period ◽  
Activity Rhythm ◽  
Adaptive Significance ◽  
Endogenous Timing ◽  
Large Measure ◽  
Locomotor Activity Rhythm ◽  
Timing Mechanism ◽  
Clear Cut ◽  
Talitrus Saltator

1. Talitrus saltator possesses a clear-cut locomotor activity rhythm, largely under the control of a persistent endogenous timing mechanism of circadian frequency. In dim red illumination the period of the rhythm is somewhat greater than 24 h; in continuous white light it is less than 24 h, provided that the animals are unable to avoid the light by burrowing. The rhythm is synchronized by light/dark fluctuations, and the animal is active during the dark period. 2. The timing mechanism is temporarily advanced by increases in temperature, but otherwise it possesses a large measure of temperature independence within the normal environmental range. 3. There is some evidence that, in groups, the animals influence one another and so reduce the rate of drift of the activity rhythm in constant conditions. 4. The adaptive significance of the endogenous timing mechanism of Talitrus is discussed.

Sign in / Sign up

Export Citation Format

Share Document