Temperature acclimation of walking in the crayfish Astacus astacus L.

Motor activity of Daphnia magna (Crustacea, Cladocera) during thermal selection: Peculiarities of search reactions in the non-uniform environment

“…Therefore, on the example of different species of crustaceans, it has been demonstrated that crustaceans acclimated to selected temperatures demonstrate lower motor activity (decrease in orthokinesis) (Fraenkel & Gunn, 1961). Similar results were obtained for D. magna at 25 ºC (Mckenzie, 1992), Homarus americanus at 20 ºC (McLeese & Wilder, 1958) or between 15 and 19 ºC (Reynolds & Casterlin, 1979a), and Astacus astacus at 15 ºC (Kivivuori, 1983).…”

Motor activity of Daphnia magna (Crustacea, Cladocera) during thermal selection: Peculiarities of search reactions in the non-uniform environment

“…Therefore, on the example of different species of crustaceans, it has been demonstrated that crustaceans acclimated to selected temperatures demonstrate lower motor activity (decrease in orthokinesis) (Fraenkel & Gunn, 1961). Similar results were obtained for D. magna at 25 ºC (Mckenzie, 1992), Homarus americanus at 20 ºC (McLeese & Wilder, 1958) or between 15 and 19 ºC (Reynolds & Casterlin, 1979a), and Astacus astacus at 15 ºC (Kivivuori, 1983).…”

Thermal behaviour of crustaceans

“…Results with the crayfish Astacus astacus are similar : in stable-temperature experiments with 20 xC-acclimated animals there was a secondary minimum of activity between 5 and 25 xC at 15x (Kivivuori, 1983). With a rate of temperature change of 0.2-0.3 xC min x1 , the locomotor activity of 20 xC-acclimated crayfish was found to be highest at temperatures of 6-10 xC, lowest at 15 xC, and increased again at 19-24 xC (Lehti-Koivunen & Kivivuori, 1994).…”

“…Many animals show a minimum of motor activity in the middle of their preferred temperature range. This has been observed in some crustaceans : for Daphnia magna at 25 xC (McKenzie et al, 1992), Homarus americanus at 20 xC (McLeese & Wilder, 1958) or between 15 and 19 xC , and Astacus astacus at 15 xC (Kivivuori, 1983). As these temperatures are also preferred by crustaceans acclimated to the same temperatures as the animals used for activity measurements, it is likely that low locomotor activity (decreased orthokinesis ; Fraenkel & Gunn, 1961) is one behavioural mechanism by which thermal preference occurs.…”

“…The righting reflex time of Astacus astacus is short (less than 20 s) at temperatures of 5-20 xC in animals acclimated to 5 xC and between 10 and 25 xC in 20 xC-acclimated animals (Kivivuori, 1977). Below and above these temperature ranges it lengthens rapidly to 60 s or more.…”

Effect of temperature on the walking behaviour of an egg parasitoid: disentangling kinetic response from integrated response

“…The escape response of A. listronoti seems to be associated with increased activity rather than with intensified turning rate. Atypical elevated activity at low temperatures was also observed in crayfish by Kivivuori (), who suggested that the reason was ‘a lack of normal coordination of spontaneous walking’, with crayfish walking continuously at low temperatures, as opposed to walking and stopping when foraging at intermediate temperatures. This pattern might arise from increased excitability of the crayfish neuromuscular system in the cold, leading to changes in activity level at low temperatures.…”

Motor activity of Daphnia magna (Crustacea, Cladocera) during thermal selection: Peculiarities of search reactions in the non-uniform environment

“…Therefore, on the example of different species of crustaceans, it has been demonstrated that crustaceans acclimated to selected temperatures demonstrate lower motor activity (decrease in orthokinesis) (Fraenkel & Gunn, 1961). Similar results were obtained for D. magna at 25 ºC (Mckenzie, 1992), Homarus americanus at 20 ºC (McLeese & Wilder, 1958) or between 15 and 19 ºC (Reynolds & Casterlin, 1979a), and Astacus astacus at 15 ºC (Kivivuori, 1983).…”

Thermal behaviour of crustaceans

“…Results with the crayfish Astacus astacus are similar : in stable-temperature experiments with 20 xC-acclimated animals there was a secondary minimum of activity between 5 and 25 xC at 15x (Kivivuori, 1983). With a rate of temperature change of 0.2-0.3 xC min x1 , the locomotor activity of 20 xC-acclimated crayfish was found to be highest at temperatures of 6-10 xC, lowest at 15 xC, and increased again at 19-24 xC (Lehti-Koivunen & Kivivuori, 1994).…”

“…Many animals show a minimum of motor activity in the middle of their preferred temperature range. This has been observed in some crustaceans : for Daphnia magna at 25 xC (McKenzie et al, 1992), Homarus americanus at 20 xC (McLeese & Wilder, 1958) or between 15 and 19 xC , and Astacus astacus at 15 xC (Kivivuori, 1983). As these temperatures are also preferred by crustaceans acclimated to the same temperatures as the animals used for activity measurements, it is likely that low locomotor activity (decreased orthokinesis ; Fraenkel & Gunn, 1961) is one behavioural mechanism by which thermal preference occurs.…”

“…The righting reflex time of Astacus astacus is short (less than 20 s) at temperatures of 5-20 xC in animals acclimated to 5 xC and between 10 and 25 xC in 20 xC-acclimated animals (Kivivuori, 1977). Below and above these temperature ranges it lengthens rapidly to 60 s or more.…”

Effect of temperature on the walking behaviour of an egg parasitoid: disentangling kinetic response from integrated response

“…The escape response of A. listronoti seems to be associated with increased activity rather than with intensified turning rate. Atypical elevated activity at low temperatures was also observed in crayfish by Kivivuori (), who suggested that the reason was ‘a lack of normal coordination of spontaneous walking’, with crayfish walking continuously at low temperatures, as opposed to walking and stopping when foraging at intermediate temperatures. This pattern might arise from increased excitability of the crayfish neuromuscular system in the cold, leading to changes in activity level at low temperatures.…”

Motor activity of Daphnia magna (Crustacea, Cladocera) during thermal selection: Peculiarities of search reactions in the non-uniform environment

“…Therefore, on the example of different species of crustaceans, it has been demonstrated that crustaceans acclimated to selected temperatures demonstrate lower motor activity (decrease in orthokinesis) (Fraenkel & Gunn, 1961). Similar results were obtained for D. magna at 25 ºC (Mckenzie, 1992), Homarus americanus at 20 ºC (McLeese & Wilder, 1958) or between 15 and 19 ºC (Reynolds & Casterlin, 1979a), and Astacus astacus at 15 ºC (Kivivuori, 1983).…”

Thermal behaviour of crustaceans

“…Results with the crayfish Astacus astacus are similar : in stable-temperature experiments with 20 xC-acclimated animals there was a secondary minimum of activity between 5 and 25 xC at 15x (Kivivuori, 1983). With a rate of temperature change of 0.2-0.3 xC min x1 , the locomotor activity of 20 xC-acclimated crayfish was found to be highest at temperatures of 6-10 xC, lowest at 15 xC, and increased again at 19-24 xC (Lehti-Koivunen & Kivivuori, 1994).…”

“…Many animals show a minimum of motor activity in the middle of their preferred temperature range. This has been observed in some crustaceans : for Daphnia magna at 25 xC (McKenzie et al, 1992), Homarus americanus at 20 xC (McLeese & Wilder, 1958) or between 15 and 19 xC , and Astacus astacus at 15 xC (Kivivuori, 1983). As these temperatures are also preferred by crustaceans acclimated to the same temperatures as the animals used for activity measurements, it is likely that low locomotor activity (decreased orthokinesis ; Fraenkel & Gunn, 1961) is one behavioural mechanism by which thermal preference occurs.…”

“…The righting reflex time of Astacus astacus is short (less than 20 s) at temperatures of 5-20 xC in animals acclimated to 5 xC and between 10 and 25 xC in 20 xC-acclimated animals (Kivivuori, 1977). Below and above these temperature ranges it lengthens rapidly to 60 s or more.…”

Effect of temperature on the walking behaviour of an egg parasitoid: disentangling kinetic response from integrated response

“…The escape response of A. listronoti seems to be associated with increased activity rather than with intensified turning rate. Atypical elevated activity at low temperatures was also observed in crayfish by Kivivuori (), who suggested that the reason was ‘a lack of normal coordination of spontaneous walking’, with crayfish walking continuously at low temperatures, as opposed to walking and stopping when foraging at intermediate temperatures. This pattern might arise from increased excitability of the crayfish neuromuscular system in the cold, leading to changes in activity level at low temperatures.…”