2021
DOI: 10.1038/s41598-021-82249-6
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Continuous versus discrete quantity discrimination in dune snail (Mollusca: Gastropoda) seeking thermal refuges

Abstract: The ability of invertebrates to discriminate quantities is poorly studied, and it is unknown whether other phyla possess the same richness and sophistication of quantification mechanisms observed in vertebrates. The dune snail, Theba pisana, occupies a harsh habitat characterised by sparse vegetation and diurnal soil temperatures well above the thermal tolerance of this species. To survive, a snail must locate and climb one of the rare tall herbs each dawn and spend the daytime hours in an elevated refuge posi… Show more

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Cited by 8 publications
(12 citation statements)
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“…Natural selection has driven the evolution of a system that permits this snail species to find a suitable group of vegetation rapidly to escape from the soil temperatures. Based on their ecology, Bisazza and Gatto ( 2021 ) investigated whether T. pisana would prefer larger rather than smaller groups of vertical bars in a fully bright condition, a situation that simulated the natural habitat of this species. In subsequent laboratory experiments, authors found that the numerical acuity of snails reached the four- versus five-item discrimination, a numerical performance comparable to that exhibited by many vertebrates.…”
Section: Methodologies For Studying Quantitative Abilities In Inverte...mentioning
confidence: 99%
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“…Natural selection has driven the evolution of a system that permits this snail species to find a suitable group of vegetation rapidly to escape from the soil temperatures. Based on their ecology, Bisazza and Gatto ( 2021 ) investigated whether T. pisana would prefer larger rather than smaller groups of vertical bars in a fully bright condition, a situation that simulated the natural habitat of this species. In subsequent laboratory experiments, authors found that the numerical acuity of snails reached the four- versus five-item discrimination, a numerical performance comparable to that exhibited by many vertebrates.…”
Section: Methodologies For Studying Quantitative Abilities In Inverte...mentioning
confidence: 99%
“…Studies focusing on quantitative abilities on invertebrates have not gone especially far toward disentangling which attributes are exploited in quantity discrimination, even though some authors have conducted carefully controlled experiments for ruling out the role of continuous variables (Bisazza and Gatto 2021 ; Cross and Jackson 2017 ; Gatto and Carlesso 2019 ; Howard et al 2018 ; MaBouDi et al 2020 ; Nelson and Jackson 2012 ; Yang and Chiao 2016 ). Indeed, discriminations based on discrete variables (e.g., identifying each single item within a group) or on analogue variables (e.g., continuous features of stimuli as the overall surface encompassed by stimuli) show comparable results, but it is necessary to investigate carefully which attributes are attended to before claiming that a species has the capacity for processing numerical information (Feigenson 2007 ).…”
Section: Future Directionsmentioning
confidence: 99%
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“…Numerical abilities have many different adaptive functions. For example, numerical discrimination allows dune snails (Theba pisana) to find a shelter to survive desiccation, female lions (Panthera leo) to estimate the strength of an opposing group, and banded killifish (Fundulus diaphanous) to select the social group that provides the best protection against predators (Bisazza and Gatto 2021;Hoare et al 2004;McComb et al 1994). We thus expect that different species have evolved different numerical capabilities in relation to the intensity of selection and the context in which they evolved.…”
Section: Introductionmentioning
confidence: 99%