Effects of temperature and photoperiod on glucose, glycerol and glycogen concentrations in Helix pomatia Linnaeus, 1758 in spring and autumn

• Autorzy: Nowakowska A. , Caputa M. , Rogalska J.
• Języki publikacji: EN

Abstrakty

EN

One of the variables oscillating seasonally in Helix pomatia L., described in our previous paper, was their rudimentary cryoprotection provided by modest increases in haemolymph glucose and glycerol concentrations in autumn and early spring, respectively. Because factors governing cryoprotective responses are unknown, we decided to investigate the effects of spring and autumn acclimation of H. pomatia to different thermal and photoperiod conditions on the changes in haemolymph concentrations of glucose and glycerol and on the glycogen level in selected organs. Neither acclimation to short-day photoperiod nor low ambient temperature evoked increase in glucose and glycerol concentration in spring and autumn. Both acclimation variants decreased hepatopancreatic glycogen level. The rudimentary freeze-tolerance in H. pomatia seems to be a combined effect of cold and short-day photoperiod and might also be affected by their nutritional and reproductive status. The effect of exposure to frost-bite is also likely to be involved.

Słowa kluczowe

EN

temperature effect; photoperiod; glucose concentration; glycerol concentration; glycogen concentration; Helix pomatia; spring; autumn; cold tolerance; acclimation; snail; land snail; nutritional status; reproductive status

• Wydawca: -
• Czasopismo: Folia Malacologica
• Rocznik: 2011
• Tom: 19
• Numer: 3
• Opis fizyczny: p.155-163,fig.,ref.

Twórcy

autor

Nowakowska A.

• Department of Animal Physiology, Institute of General and Molecular Biology, N.Copernicus University, Gagarina 9, 87-100 Torun, Poland

autor

Caputa M.

autor

Rogalska J.

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