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Davis, Elizabeth C.

doi:10.1071/mr04008

Molluscan Res.

2004

DOI: 10.1071/mr04008

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Elizabeth C. Davis¹

Abstract: Some gastropods are able to find food sources by following airborne chemical plumes using both tropotaxis and anemotaxis. This study examined odour tracking to food odours with a species of terrestrial gastropod, Meridolum gulosum (Gould, 1864), a native to rainforests in coastal south-eastern New South Wales, Australia. It was demonstrated that M. gulosum moves towards food odours (fungus) in still air, and holds its tentacles at characteristic angles when moving towards an odour source. This snail can detect… Show more

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Cited by 7 publications

References 10 publications

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Do terrestrial gastropods use olfactory cues to locate and select food actively?

Kiss

2017

Invert Neurosci

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Having been investigated for over 40 years, some aspects of the biology of terrestrial gastropod's olfactory system have been challenging and highly contentious, while others still remain unresolved. For example, a number of terrestrial gastropod species can track the odor of food, while others have no strong preferences toward food odor; rather they find it by random encounter. Here, while assessing the most recent findings and comparing them with earlier studies, the aspects of the food selection based on olfactory cues are examined critically to highlight the speculations and controversies that have arisen. We analyzed and compared the potential role of airborne odors in the feeding behavior of several terrestrial gastropod species. The available results indicate that in the foraging of most of the terrestrial gastropod species odor cues contribute substantially to food finding and selection. The results also suggest, however, that what they will actually consume largely depends on where they live and the species of gastropod that they are. Due to the voluminous literature relevant to this object, this review is not intended to be exhaustive. Instead, I selected what I consider to be the most important or critical in studies regarding the role of the olfaction in feeding of terrestrial gastropods.

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Do terrestrial gastropods use olfactory cues to locate and select food actively?

Kiss

2017

Invert Neurosci

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Possible environmental chemical cues affecting behaviour of the mangrove gastropod Cerithidea decollata

Lazzeri

2017

Estuarine, Coastal and Shelf Science

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Strangers in the dark: behavioral and biochemical evidence for trail pheromones in Hawaiian tree snails

Holland

Gousy-Leblanc

Yew

2018

Invertebrate Biology

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The importance of pheromones in insect and mammal social systems is well documented, but few studies have addressed the role of pheromones in land snail behavior. In this investigation, we used a series of behavioral trials and direct analysis in real time mass spectrometry (MS) to test the hypothesis that land snails use mucous trails in orientation and chemical communication. We worked with six endemic Hawaiian land snail species in four genera, three subfamilies, and two families. We tested conspecific trail following in five of these species, and trail following occurred at a statistically significant frequency for each of the species tested (n=181, p‐values ranged <0.0001–0.0494). Percentage of conspecific trials that showed trail following ranged 66.7–94.1%. None of the interspecific tests revealed evidence of trail following among species (n=105, with p‐values of 0.0577–0.5000). Juvenile achatinelline snails did not follow trails of conspecific juveniles (n=30, p=0.5722) or adults (n=30, p=0.4278), nor did adults follow juvenile trails (n=30, p=0.5722). Comparative MS analysis of adult and juvenile trails showed distinct chemical signatures in the two groups. Signals corresponding to medium‐ and long‐chain fatty acids and other unidentified small molecules were present in adult but not in juvenile trails. Considered together, these results support the hypotheses that trail following could serve an important social and reproductive function. This discovery provides evidence for the presence of an ephemeral tree snail pheromone, which could have important implications for the conservation of these increasingly rare and threatened species.

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Untitled

Cited by 7 publications

References 10 publications

Do terrestrial gastropods use olfactory cues to locate and select food actively?

Do terrestrial gastropods use olfactory cues to locate and select food actively?

Possible environmental chemical cues affecting behaviour of the mangrove gastropod Cerithidea decollata

Strangers in the dark: behavioral and biochemical evidence for trail pheromones in Hawaiian tree snails

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