There are reports on the inability of inbred, laboratory-reared Lymnaea stagnalis to perform feeding and aerial respiration in the cold. It has also been suggested that laboratory-bred snails have an inability to perform aerial respiration in winter months in the laboratory. Here, we used an inbred, laboratory-reared strain of Lymnaea (the S-strain) to demonstrate that the snails are capable of performing those behaviours in a cold (4 degrees C) environment after a 2 day acclimation period. In addition, the inbred snails were able to perform aerial respiration during winter months at room temperature (20 degrees C) in the laboratory. The persistence of long-term memory (LTM) was extended for at least 4 weeks by placing S-strain snails into a 4 degrees C environment following training. Typically, the cold block (CB) procedure (1 h at 4 degrees C) immediately after a training session blocks LTM formation in the S-strain but not in a freshly collected strain. Four weeks at 4 degrees C transformed the S-strain phenotype into one resisting the CB procedure. Thus, with a 4 week cold spell snails gain a resistance to the CB procedure, and that would explain why freshly collected snails are resistant to the procedure. However, we found that F1 progeny of a freshly collected strain reared in the laboratory were resistant to the CB procedure. This suggests that an unknown selection resulted in the Sstrain being susceptible to the CB procedure.

The temperature sensitivity of memory formation and persistence is altered by cold acclimation in a pond snail / Fernell, Maria; Rivi, Veronica; Batabyal, Anuradha; Lukowiak, Ken. - In: JOURNAL OF EXPERIMENTAL BIOLOGY. - ISSN 0022-0949. - 224:11(2021), pp. N/A-N/A. [10.1242/jeb.242513]

The temperature sensitivity of memory formation and persistence is altered by cold acclimation in a pond snail

Rivi, Veronica;Lukowiak, Ken
2021

Abstract

There are reports on the inability of inbred, laboratory-reared Lymnaea stagnalis to perform feeding and aerial respiration in the cold. It has also been suggested that laboratory-bred snails have an inability to perform aerial respiration in winter months in the laboratory. Here, we used an inbred, laboratory-reared strain of Lymnaea (the S-strain) to demonstrate that the snails are capable of performing those behaviours in a cold (4 degrees C) environment after a 2 day acclimation period. In addition, the inbred snails were able to perform aerial respiration during winter months at room temperature (20 degrees C) in the laboratory. The persistence of long-term memory (LTM) was extended for at least 4 weeks by placing S-strain snails into a 4 degrees C environment following training. Typically, the cold block (CB) procedure (1 h at 4 degrees C) immediately after a training session blocks LTM formation in the S-strain but not in a freshly collected strain. Four weeks at 4 degrees C transformed the S-strain phenotype into one resisting the CB procedure. Thus, with a 4 week cold spell snails gain a resistance to the CB procedure, and that would explain why freshly collected snails are resistant to the procedure. However, we found that F1 progeny of a freshly collected strain reared in the laboratory were resistant to the CB procedure. This suggests that an unknown selection resulted in the Sstrain being susceptible to the CB procedure.
2021
224
11
N/A
N/A
The temperature sensitivity of memory formation and persistence is altered by cold acclimation in a pond snail / Fernell, Maria; Rivi, Veronica; Batabyal, Anuradha; Lukowiak, Ken. - In: JOURNAL OF EXPERIMENTAL BIOLOGY. - ISSN 0022-0949. - 224:11(2021), pp. N/A-N/A. [10.1242/jeb.242513]
Fernell, Maria; Rivi, Veronica; Batabyal, Anuradha; Lukowiak, Ken
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1304473
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