Developmental effects on social preferences in frog tadpoles, Rana ornativentris

Hase, Kazuko; Kutsukake, Nobuyuki

doi:10.1016/j.anbehav.2019.06.001

Cited by 5 publications

(5 citation statements)

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“…2b). If intraspeci c competition exists among B. g. miyakonis tadpoles, it is likely mild or weaker than in Rana ornativentris, which has shown size discrimination (Hase and Kutsukake, 2019). From the perspective of the adaptive value of tadpole aggregation behavior, it is typically associated with avoiding predation (Watt et al, 1997), foraging e ciency (Sontag et al, 2006), and thermal control (Brattstrom, 1962).…”

Section: Discussionmentioning

confidence: 99%

“…Animals form groups for predation avoidance (e.g., sh school, Morgan, 1985, Eggers, 1978; amphibian larvae, Watt et al, 1997) and foraging e ciency (e.g., in bird, Camphuysen and Garthe, 2004; in spider, Rypstra 1989; in sh, Eggers 1978; Day et al 2001). There is a theory that individuals, especially in early life stages, tend to associate with similar-sized conspeci cs (Conradt and Roper, 2000;Ranta et al, 2016;Hase and Kutsukake, 2019). However, joining a larger group is not always advantageous, and there is a con ict between group size and risk.…”

Section: Introductionmentioning

confidence: 99%

“…Toad tadpoles bene t from forming groups, such as predation avoidance through the dilution effect (Watt et al, 1997;Krause and Ruxton, 2002). The factors in uencing how individuals choose their group mates have been investigated, including the importance of size and kinship (Waldman and Adler, 1979; O'Hara and Blaustein, 1982aBlaustein, , 1982bGamboa et al, 1991;Saidapur and Girish, 2000;Pakkasmaa and Laurila, 2004;Gramapurohit et al, 2006;Eluvathingal et al, 2009;Hase and Kutsukake, 2019). In species with long reproductive seasons and signi cant variations in larval size, intraspeci c competition changes grouping rules along ontogeny.…”

Section: Introductionmentioning

confidence: 99%

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Grouping rule in tadpole: is quantity more or size assortment more important?

Hase

2023

Anim Cogn

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The ability to perceive group size and discriminate the ontogeny of conspeci cs would play a crucial role in the grouping behavior of animals. However, the relative importance of numerical quantity and sizeassortative preferences in shaping grouping rules remains poorly understood. In this study, I examined the responses of Miyako toad (Bufo gargarizans miyakonis) tadpoles to number quantity and size discrimination by choice tests at different ontogenetic stages (small, medium, and large). The results revealed that small-sized tadpoles in early developmental stages signi cantly preferred larger numbers (4) compared to smaller ones (1). However, this preference was not observed in later developmental stages (medium and large). And interestingly, when there was no group size bias, size discrimination was not observed in tadpoles, irrespective of their ontogeny. These ndings suggest that Miyako toad tadpoles possess innate numerical competence but demonstrate ontogeny-dependent utilization of this ability. Understanding the interplay between numerical quantity and size-assortative preferences in grouping behavior will provide esteemed insights into the adaptive value of number sense in vertebrates and sheds light on evolutionary processes.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Grouping rule in tadpole: is quantity more or size assortment more important?

Hase

2023

Anim Cogn

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“…While feeding, they form schools that facilitate their catch in big numbers. This schooling behavior is associated with protection against predators, temperature, and the effectiveness of feeding strategies (Blaustein and Waldman 1992;Blaustein and Walls 1995;Spieler 2003;Hase and Kutsukake 2019). However, this behavior makes them more vulnerable to human exploitation.…”

Section: Discussionmentioning

confidence: 99%

Tadpole soup: Chinantec caldo de piedra and behavior of Duellmanohyla ignicolor larvae (Amphibia, Anura, Hylidae)

Flores¹,

Arreortúa²,

González‐Bernal³

2022

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Although amphibian consumption by humans has been reported globally, this practice is not well studied despite its direct implications to the decline of amphibian populations. The International Union for Conservation of Nature (IUCN) recognizes the need to document the use and trade of species to be considered in assessing their extinction risk. Here the consumption of Duellmanohyla ignicolor tadpoles is documented. It is a micro endemic species categorized as Near Threatened (NT) consumed in a traditional dish called “caldo de piedra” (stone soup) prepared by the Chinantec people (Tsa Ju Jmí’) in Oaxaca, Mexico. Through conversations with local people and stream monitoring, the behavior of tadpoles of this species was documented and aspects of their exploitation and habitat use described. Places where caldo de piedra is still consumed were determined and using a spatial analysis with Geographic Information Systems, the distribution of the species in relation to those localities was analyzed. A number of other areas where tadpoles of this species might also occur and be exploited is predicted. In conclusion, the school behaviour, surface feeding, and the preference for deeper waterbodies that these tadpoles exhibit makes them vulnerable to being caught in large quantities. As they are consumed locally, are not commercialized, and the species distribution range is wider than caldo de piedra consumption, this implies a low risk for their populations. However, the tadpoles’ reliance on streams with depths x̄ = 60 cm and flux x̄ = 0.65 m/s reduces the availability of sites for their optimal development.

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Section: Introductionmentioning

confidence: 99%

Grouping rule in tadpole: is the numerical quantity or size-assortative more critical?

Hase

2023

Preprint

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The ability to perceive group size and discriminate the ontogeny of conspecifics would play a crucial role in the grouping behavior of animals. However, the relative importance of numerical quantity and size-assortative preferences in shaping grouping rules remains poorly understood. In this study, I examined the responses of Miyako toad (Bufo gargarizans miyakonis) tadpoles to number quantity and size discrimination by choice tests at different ontogenetic stages (small, medium, and large). The results revealed that small-sized tadpoles in early developmental stages significantly preferred larger numbers (4) compared to smaller ones (1). However, this preference was not observed in later developmental stages (medium and large). And interestingly, when there was no group size bias, size discrimination was not observed in tadpoles, irrespective of their ontogeny. These findings suggest that Miyako toad tadpoles possess innate numerical competence but demonstrate ontogeny-dependent utilization of this ability. Understanding the interplay between numerical quantity and size-assortative preferences in grouping behavior will provide esteemed insights into the adaptive value of number sense in vertebrates and sheds light on evolutionary processes.

show abstract

Developmental effects on social preferences in frog tadpoles, Rana ornativentris

Cited by 5 publications

References 64 publications

Grouping rule in tadpole: is quantity more or size assortment more important?

Grouping rule in tadpole: is quantity more or size assortment more important?

Tadpole soup: Chinantec caldo de piedra and behavior of Duellmanohyla ignicolor larvae (Amphibia, Anura, Hylidae)

Grouping rule in tadpole: is the numerical quantity or size-assortative more critical?

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Developmental effects on social preferences in frog tadpoles, Rana ornativentris

Cited by 5 publications

References 64 publications

Grouping rule in tadpole: is quantity more or size assortment more important?

Grouping rule in tadpole: is quantity more or size assortment more important?

﻿Tadpole soup: Chinantec caldo de piedra and behavior of Duellmanohyla ignicolor larvae (Amphibia, Anura, Hylidae)

Grouping rule in tadpole: is the numerical quantity or size-assortative more critical?

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Tadpole soup: Chinantec caldo de piedra and behavior of Duellmanohyla ignicolor larvae (Amphibia, Anura, Hylidae)