Suppression of egg-laying during starvation in the snailLymnaea stagnalis by inhibition of the ovulation hormone producing Caudo-Dorsal cells

Maat, A. Ter; Lodder, J.C.; Veenstra, Jan A.; Goldschmeding, J. T.

doi:10.1016/0006-8993(82)90528-5

Cited by 42 publications

(13 citation statements)

References 7 publications

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“…One trigger for egg laying is a transfer from dirty to clean water (Clean Water Stimulus: Ter Maat et al 1983). The present experiments suggest that food availability also affects the excitability of the CDC's, although indirectly, which is in agreement with electrophysiological findings (Ter Maat et al 1982). Reduced food availability does not affect the size of the egg mass but does cause an increase of the interval between the deposition of successive egg masses.…”

Section: Timing Of Oviposition In Relation To the Food Cyclesupporting

confidence: 92%

Food intake, growth, and reproduction as affected by day length and food availability in the pond snail Lymnaea stagnalis*

Maat

Zonneveld

Visser³

et al. 2007

American Malacological Bulletin

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Abstract:With the aim of integrating the physiology and evolutionary ecology of Lymnaea stagnalis (Linnaeus, 1758), we studied the effects of day length and food availability on the energy budget. Snails were assigned to two different photoperiods and three levels of food availability. The snails were kept individually, and food consumption, growth, and egg production were measured for about 2 months. Snails could nearly compensate for a one-day starvation period by increasing the rate of food-intake. However, food-intake rates did not increase further after a starvation period of 2 days. Growth was well described by the Von Bertalanffy growth equation. The ultimate size of snails kept under medium-day conditions (MD; light:dark = 12:12 h) was not affected by food availability. By contrast, the ultimate size of snails kept under long-day conditions (LD; light:dark = 16:8 h) depended on food availability; those fed the lowest quantities grow the least. Dry-weight densities (dry weight/wet weight) of MD snails were considerably above those of LD snails. In MD snails, food availability did not appreciably affect dry-weight density. By contrast, in LD snails, dry-weight density decreased with decreasing food availability. The reproductive output of LD snails declined with declining food availability, but was 2 to 4 times that of MD snails. The difference in reproductive output was largely accounted for by the difference in stored energy, i.e. dry-weight density. To gauge the extent to which the conclusions from our laboratory work applied to free-living snails, a field study was conducted. The wild-caught snails' dry-weight density was also lowest in long-day conditions when most eggs were laid. However, the dry-weight densities during medium and short days were lower than the dry-weight densities of laboratory animals under LD conditions. Thus, in the field, snails stored less energy than in the laboratory.

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Section: Timing Of Oviposition In Relation To the Food Cyclesupporting

confidence: 92%

Food intake, growth, and reproduction as affected by day length and food availability in the pond snail Lymnaea stagnalis*

Maat

Zonneveld

Visser³

et al. 2007

American Malacological Bulletin

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“…(1) Food deprivation suppresses the egg-laying behavior in Lymnaea (Ter Maat et al, 1982). The egg-laying behavior is partly controlled by monoamines including dopamine (Boyle and Yoshino, 2002).…”

Section: Discussionmentioning

confidence: 99%

Relationship between the grades of a learned aversive-feeding response and the dopamine contents inLymnaea

et al. 2016

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The pond snail Lymnaea learns conditioned taste aversion (CTA) and remembers not to respond to food substances that initially cause a feeding response. The possible relationship between how well snails learn to follow taste-aversion training and brain dopamine contents is not known. We examined this relationship and found the following: first, snails in the act of eating just before the commencement of CTA training were poor learners and had the highest dopamine contents in the brain; second, snails which had an ad libitum access to food, but were not eating just before training, were average learners and had lower dopamine contents; third, snails food-deprived for one day before training were the best learners and had significantly lower contents of dopamine compared to the previous two cohorts. There was a negative correlation between the CTA grades and the brain dopamine contents in these three cohorts. Fourth, snails food-deprived for five days before training were poor learners and had higher dopamine contents. Thus, severe hunger increased the dopamine content in the brain. Because dopamine functions as a reward transmitter, CTA in the severely deprived snails (i.e. the fourth cohort) was thought to be mitigated by a high dopamine content.

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“…These latter cells are well known to be involved in the process of egg-laying (Geraerts and Bohlken, 1976;Ter Maat et al 1982;Geraerts et al, 1988). Together, these separate findings are all consistent with a participation of the Lymnaea osphradium in the control of egg-laying, and a change of egg-laying intensity after osphradium deprivation is therefore not surprising.…”

Section: Day After the Operationmentioning

confidence: 94%

The osphradium is involved in the control of egg-laying in the pond snailLymnaea stagnalis

Nezlin¹

1997

Invertebrate Reproduction & Development

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Suppression of egg-laying during starvation in the snailLymnaea stagnalis by inhibition of the ovulation hormone producing Caudo-Dorsal cells

Cited by 42 publications

References 7 publications

Food intake, growth, and reproduction as affected by day length and food availability in the pond snail Lymnaea stagnalis*

Food intake, growth, and reproduction as affected by day length and food availability in the pond snail Lymnaea stagnalis*

Relationship between the grades of a learned aversive-feeding response and the dopamine contents inLymnaea

The osphradium is involved in the control of egg-laying in the pond snailLymnaea stagnalis

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