Counting on Numbers—Numerical Abilities in Grey Bamboo Sharks and Ocellate River Stingrays

Not just shades of grey: life is full of colour for the ocellate river stingray (Potamotrygon motoro)

(2021) Vera Schluessel et al.   JOURNAL OF EXPERIMENTAL BIOLOGY

Spontaneous quantity discrimination of artificial flowers by foraging honeybees

(2020) Scarlett R. Howard et al.   JOURNAL OF EXPERIMENTAL BIOLOGY

Visual discrimination and resolution in freshwater stingrays (Potamotrygon motoro)

(2020) Martha M. M. Daniel et al.   JOURNAL OF COMPARATIVE PHYSIOLOGY A-NEUROETHOLOGY SENSORY NEURAL AND BEHAVIORAL PHYSIOLOGY

Numerical cognition in honeybees enables addition and subtraction

(2019) Scarlett R. Howard et al.   Science Advances

Quantity discrimination in Port Jackson sharks incubated under elevated temperatures

(2019) Catarina Vila Pouca et al.   BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY

Serial reversal learning in freshwater stingrays (Potamotrygon motoro)

(2019) Martha M. M. Daniel et al.   ANIMAL COGNITION

Same or different? Abstract relational concept use in juvenile bamboo sharks and Malawi cichlids

(2018) Theodora Fuss et al.   Current Zoology

Same or different? Abstract relational concept use in juvenile bamboo sharks and Malawi cichlids

(2018) Theodora Fuss et al.   Current Zoology

Continuous and discrete quantity discrimination in tortoises

(2018) Andrea Gazzola et al.   Biology Letters

Understanding the origin of number sense: a review of fish studies

(2017) Christian Agrillo et al.   PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

The Ebbinghaus illusion in the gray bamboo shark ( Chiloscyllium griseum ) in comparison to the teleost damselfish ( Chromis chromis )

(2017) Theodora Fuss et al.   ZOOLOGY

Experimental setting affects the performance of guppies in a numerical discrimination task

(2016) Elia Gatto et al.   ANIMAL COGNITION

Development and testing of a rapid method for measuring shoal size discrimination

(2016) Tyrone Lucon-Xiccato et al.   ANIMAL COGNITION

Individual guppies differ in quantity discrimination performance across antipredator and foraging contexts

(2016) Tyrone Lucon-Xiccato et al.   BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY

Do humans (Homo sapiens) and fish (Pterophyllum scalare) make similar numerosity judgments?

(2016) Maria Elena Miletto Petrazzini et al.   JOURNAL OF COMPARATIVE PSYCHOLOGY

Relative versus absolute numerical representation in fish: Can guppies represent “fourness”?

(2015) Maria Elena Miletto Petrazzini et al.   ANIMAL COGNITION

Quantification acuity in spontaneous shoaling decisions of three-spined sticklebacks

(2015) Marion Mehlis et al.   ANIMAL COGNITION

Seeing the forest before the trees–spatial orientation in freshwater stingrays (Potamotrygon motoro) in a hole-board task

(2015) V. Schluessel et al.   BEHAVIOURAL PROCESSES

Numerical discrimination by frogs (Bombina orientalis)

(2014) G. Stancher et al.   ANIMAL COGNITION

Symmetry perception in bamboo sharks (Chiloscyllium griseum) and Malawi cichlids (Pseudotropheus sp.)

(2014) V. Schluessel et al.   ANIMAL COGNITION

Extensive training extends numerical abilities of guppies

(2014) Angelo Bisazza et al.   ANIMAL COGNITION

Irrespective of size, scales, color or body shape, all fish are just fish: object categorization in the gray bamboo shark Chiloscyllium griseum

(2014) V. Schluessel et al.   ANIMAL COGNITION

Something worth remembering: visual discrimination in sharks

(2014) Theodora Fuss et al.   ANIMAL COGNITION

Non-visual numerical discrimination in a blind cavefish (Phreatichthys andruzzii)

(2014) A. Bisazza et al.   JOURNAL OF EXPERIMENTAL BIOLOGY

Spontaneous versus trained numerical abilities. A comparison between the two main tools to study numerical competence in non-human animals

(2014) Christian Agrillo et al.   JOURNAL OF NEUROSCIENCE METHODS

The brain creates illusions not just for us: sharks (Chiloscyllium griseum) can “see the magic” as well

(2014) Theodora Fuss et al.   Frontiers in Neural Circuits

Discrimination of small quantities by fish (redtail splitfin, Xenotoca eiseni)

(2013) Gionata Stancher et al.   ANIMAL COGNITION

Numerical acuity of fish is improved in the presence of moving targets, but only in the subitizing range

(2013) Christian Agrillo et al.   ANIMAL COGNITION

One, two, three, four, or is there something more? Numerical discrimination in day-old domestic chicks

(2013) Rosa Rugani et al.   ANIMAL COGNITION

Activity and habitat use of two species of stingrays (Myliobatiformes: Potamotrygonidae) in the upper Paraná River basin, Southeastern Brazil

(2012) Domingos Garrone Neto et al.   Neotropical Ichthyology

Spatial learning and memory retention in the grey bamboo shark (Chiloscyllium griseum)

(2012) Vera Schluessel et al.   ZOOLOGY

Quantity discrimination in jungle crows, Corvus macrorhynchos

(2011) Bezawork Afework Bogale et al.   ANIMAL BEHAVIOUR

Small and large number discrimination in guppies

(2011) Laura Piffer et al.   ANIMAL COGNITION

Spontaneous discrimination of small quantities: shoaling preferences in angelfish (Pterophyllum scalare)

(2011) Luis M. Gómez-Laplaza et al.   ANIMAL COGNITION

Free-ranging dogs assess the quantity of opponents in intergroup conflicts

(2010) Roberto Bonanni et al.   ANIMAL COGNITION

Large Number Discrimination by Mosquitofish

(2010) Christian Agrillo et al.   PLoS One

Ontogeny of Numerical Abilities in Fish

(2010) Angelo Bisazza et al.   PLoS One

Quantity discrimination in Tenebrio molitor: evidence of numerosity discrimination in an invertebrate?

(2009) P. Carazo et al.   ANIMAL COGNITION

A new method for studying problem solving and tool use in stingrays (Potamotrygon castexi)

(2009) Michael J. Kuba et al.   ANIMAL COGNITION

The role of learning in shark behaviour

(2009) Tristan L Guttridge et al.   FISH AND FISHERIES

Use of Number by Fish

(2009) Christian Agrillo et al.   PLoS One

Do fish count? Spontaneous discrimination of quantity in female mosquitofish

(2008) Christian Agrillo et al.   ANIMAL COGNITION

Choice of Female Groups by Male Mosquitofish (Gambusia holbrooki)

(2008) Christian Agrillo et al.   ETHOLOGY