Effect of acute temperature change on lung respiration of the mollusc Lymnaea stagnalis

Sidorov, A. V.

doi:10.1016/j.jtherbio.2004.10.002

Cited by 10 publications

(5 citation statements)

References 13 publications

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“…This stress during the memory consolidation period was sufficient to block LTM while our 30°C stress given during consolidation showed memoryenhancing effects at least 24h beyond what is seen when the thermal stress is given before training. It is well known that Lymnaea living in their natural environment deal with a wide variation of temperature over both daily and seasonal time courses (Brown, 1979;Sidorov, 2003;Sidorov, 2005). Temperature can vary widely from 0 to 1°C (Lymnaea stagnalis in Southern Alberta have been observed performing aerial respiration in ponds with ice surrounding them) to 35°C (on hot summer days).…”

Section: Discussionmentioning

confidence: 99%

“…Lymnaea possess mechanisms for surviving in these varying conditions and the central nervous system (CNS) must play an important role in these processes. Effects of temperature on Lymnaea neurons and their synaptic connections have been determined for some of the neurons that are involved with aerial respiration (Sidorov, 2005). Sidorov found that snails kept for 2 weeks or more at water temperatures of 24-26°C did not alter the pattern of synaptic transmission between the neurons visceral dorsal 4 (VD4) and right pedal dorsal 1 (RPeD1).…”

Section: Discussionmentioning

confidence: 99%

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What's hot: the enhancing effects of thermal stress on long-term memory formation in Lymnaea stagnalis

Teskey

Lukowiak

Riaz

et al. 2012

Journal of Experimental Biology

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SUMMARYThe pond snail, Lymnaea stagnalis, naturally inhabits slow flowing, shallow and stagnant environments in the northern temperate zone. Consequently, it will experience wide temperature fluctuations dependent on prevailing weather conditions. We hypothesize that periods of warming act as a thermal stressor to alter memory formation. Snails were exposed to an acute 1 h period of 30°C pond water and we determined how memory formation following operant conditioning of aerial respiration was affected. In the snails used here (Dutch strain), a single 0.5 h training session (TS) results in intermediate-term (3 h) but not long-term memory (LTM). Applying the thermal stressor during training caused memory enhancement (i.e. LTM lasting 24 h). However, the breathing rate also increased in warm water, which might explain the enhanced memory. Therefore, we applied the thermal stressor (1 h at 30°C) up to 4 h before or 1 h after training. This did not alter baseline breathing rate during the period when snails would experience training. However, the thermal stressor whether experienced prior to or following the single TS, resulted in an enhanced memory that persisted up to 48 h (i.e. LTM). We conclude that memory enhancement is due to the stress associated with the thermal stimulus.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

What's hot: the enhancing effects of thermal stress on long-term memory formation in Lymnaea stagnalis

Teskey

Lukowiak

Riaz

et al. 2012

Journal of Experimental Biology

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“…Freshwater snails Lymnaea (Lymnaeidae) and Bulinus (Planorbidae) breathe at the water surface. In Lymnaea the edges of the lung cavity form a siphon for air breathing while the animal remains submerged for up to 1 h. Ventilation is elevated by environmental temperature but ceases below 10°C (720), an adaptation driven by the central nervous system. Lymnaea tries to escape hypoxia (355) but when exposed to anoxia relies on anaerobic metabolism (829).…”

Section: Section 2 Air Breathing In Invertebrates: Transitions From mentioning

confidence: 99%

Evolution of Air Breathing: Oxygen Homeostasis and the Transitions from Water to Land and Sky

Hsia

Schmitz

Lambertz

et al. 2013

Comprehensive Physiology

282

147

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Life originated in anoxia, but many organisms came to depend upon oxygen for survival, independently evolving diverse respiratory systems for acquiring oxygen from the environment. Ambient oxygen tension (PO2) fluctuated through the ages in correlation with biodiversity and body size, enabling organisms to migrate from water to land and air and sometimes in the opposite direction. Habitat expansion compels the use of different gas exchangers, for example, skin, gills, tracheae, lungs, and their intermediate stages, that may coexist within the same species; coexistence may be temporally disjunct (e.g., larval gills vs. adult lungs) or simultaneous (e.g., skin, gills, and lungs in some salamanders). Disparate systems exhibit similar directions of adaptation: toward larger diffusion interfaces, thinner barriers, finer dynamic regulation, and reduced cost of breathing. Efficient respiratory gas exchange, coupled to downstream convective and diffusive resistances, comprise the “oxygen cascade”—step-down of PO2 that balances supply against toxicity. Here, we review the origin of oxygen homeostasis, a primal selection factor for all respiratory systems, which in turn function as gatekeepers of the cascade. Within an organism's lifespan, the respiratory apparatus adapts in various ways to upregulate oxygen uptake in hypoxia and restrict uptake in hyperoxia. In an evolutionary context, certain species also become adapted to environmental conditions or habitual organismic demands. We, therefore, survey the comparative anatomy and physiology of respiratory systems from invertebrates to vertebrates, water to air breathers, and terrestrial to aerial inhabitants. Through the evolutionary directions and variety of gas exchangers, their shared features and individual compromises may be appreciated.

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“…Lymnaea stagnalis alters respiration and locomotory behaviour in response to acute environmental variation in temperature (Sidorov, 2003;Sidorov, 2005) and predator presence (Orr et al, 2007). However, the effects of environmental calcium concentration on snail behaviour and physiology have not previously been considered.…”

Section: Introductionmentioning

confidence: 99%

Effect of acute exposure to low environmental calcium on respiration and locomotion in Lymnaea stagnalis (L.)

Dalesman

Lukowiak

2010

Journal of Experimental Biology

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SUMMARY) environments. We found that in a low calcium environment crawling speed is reduced, and that this coincides with an increase in cutaneous respiration, indicating that the increased metabolic demands of calcium acquisition at low [Ca 2+ ] reduce the energy available for locomotion. Conversely we found a decrease in aerial respiration in hypoxic conditions in the low calcium relative to the high calcium environment. In conclusion, we found that acute exposure to low environmental calcium has a highly significant effect on locomotion and respiration, which may have consequences for snail fitness when no morphological effects are apparent.

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Effect of acute temperature change on lung respiration of the mollusc Lymnaea stagnalis

Cited by 10 publications

References 13 publications

What's hot: the enhancing effects of thermal stress on long-term memory formation in Lymnaea stagnalis

What's hot: the enhancing effects of thermal stress on long-term memory formation in Lymnaea stagnalis

Evolution of Air Breathing: Oxygen Homeostasis and the Transitions from Water to Land and Sky

Effect of acute exposure to low environmental calcium on respiration and locomotion in Lymnaea stagnalis (L.)

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