Schooling decisions in guppies (Poecilia reticulata) are based on familiarity rather than kin recognition by phenotype matching

@article{Griffiths1999SchoolingDI,
  title={Schooling decisions in guppies (Poecilia reticulata) are based on familiarity rather than kin recognition by phenotype matching},
  author={Si{\^a}n Wyn Griffiths and Anne E. Magurran},
  journal={Behavioral Ecology and Sociobiology},
  year={1999},
  volume={45},
  pages={437-443}
}
Abstract Evidence from a number of freshwater species indicates that fish prefer to school with familiar individuals. Do they also choose to associate with kin? Our experiment tested this idea using the Trinidadian guppy, Poecilia reticulata, a species whose reproductive biology favours the association of kin groups. Juveniles reared together were able to recognise one another on the basis of either visual or chemical cues, but showed no preference for schooling with unfamiliar kin. We… 
Conspecific familiarity and shoaling preferences in a wild guppy population
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Whether shoaling preferences based on presumed familiarity occur in wild adult guppies originating from a Trinidadian population that experiences relatively low predation intensity from fishes is investigated and whether any such preferences differ between the sexes is investigated.
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The results suggest that individual shoaling decisions based on social criteria can be adaptive and suggest that grouping with familiar kin yields fitness benefits in juvenile P. taeniatus.
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The potential influence of social familiarity in shoal-choice decisions was investigated in two sympatric species of north temperate fishes, juvenile banded killifish Fundulus diaphanus and juvenile
Learned recognition of conspecifics by fishes
The study of partner-choice decisions of individual fish is a good way in which insights into patterns of school structure or territorial assemblages can be gained. Most initial work has focused on
Multiple paternity and kin recognition mechanisms in a guppy population
TLDR
Genetic markers are used to show that guppies from a population in a tributary of the Paria River in Trinidad are characterized by a high degree of multiple mating with 95% of broods having more than one sire and some dams having offspring sired by six males.
Kin recognition in rainbowfish (Melanotaenia eachamensis): sex, sibs and shoaling
  • K. Arnold
  • Biology
    Behavioral Ecology and Sociobiology
  • 2000
Abstract Living with relatives can be beneficial to individuals via the evolution of kin-directed altruism, but this is tempered by the increased risk of inbreeding. Therefore, in social species, the
The importance of stable schooling: do familiar sticklebacks stick together?
  • I. Barber, G. Ruxton
  • Biology
    Proceedings of the Royal Society of London. Series B: Biological Sciences
  • 2000
TLDR
It is shown that fish from different familiarity groups associate with familiar conspecifics significantly more than predicted by a model of random assortment, suggesting that even when there is ample opportunity for inter–group transfer, shoal composition can remain stable.
Experience influences shoal member preference in a species pair of sticklebacks
TLDR
The results suggest that individuals learn their species identity from the social environment and that this affects social preference, and that Learned social preferences may also have implications for the maintenance of reproductive isolation between these species.
Kin assortment in juvenile shoals in wild guppy populations
TLDR
The frequency of sib dyads among juveniles within shoals was significantly larger than that between shoals in two high predation populations but not in two lowpredation populations, contributing to the understanding of factors underlying shoal composition.
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It is shown (in a laboratory study) that female guppies prefer to associate with familiar individuals, however, it is unable to detect any schooling preference for unfamiliar females from the same population.
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This study reveals that the tendency of female guppies to school with familiar fish declines as the group size in which they naturally live increases, indicating that the expression of familiarity is constrained by group size.
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