Song and brain development in canaries raised under different conditions of acoustic and social isolation over two years

Leitner, Stefan; Catchpole, Clive K.

doi:10.1002/dneu.20521

Cited by 30 publications

(28 citation statements)

References 33 publications

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“…Their song differs from that of normally reared males in having a smaller repertoire size, a higher proportion of single syllables and a reduced repetition rate, similar to the study of Leitner & Catchpole (2007). A typical song of a tutor is shown in figure 1a.…”

Section: Resultsmentioning

confidence: 88%

“…Second, although the presence of the tutors was crucial, the F 1 generation did not simply copy the 'abnormal' song model but developed rather species-typical song properties. A previous experiment on peer group male canaries, raised without an adult song model, had shown that these males adjust their song properties towards those of control males when exposed to conspecific tutors in their second year of life (Leitner & Catchpole 2007). Furthermore, they retained only approximately 20 per cent of their original syllables after transfer to the new environment.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, a catalogue of the different syllables of each bird was prepared in order to identify syllable turnover during the different recording weeks. To obtain the syllable repertoire size of each bird and the number of identical syllables between birds (syllable sharing), respectively, our protocol followed previously described methods to quantify canary songs (Leitner et al 2001a;Leitner & Catchpole 2004, 2007. The syllable repertoire is the number of different syllables that a bird uses to construct songs.…”

Section: (D) Song Analysismentioning

confidence: 99%

“…Since then, substantial insights into the song-learning process have been achieved from experiments with crossfostered, and normally reared male canaries (Waser & Marler 1977;Nottebohm & Nottebohm 1978;Güttinger 1979;Nottebohm et al 1986;Mundinger 1995;Leitner & Catchpole 2004). More recently, male canary song development has been investigated in restricted acoustic environments (Lehongre et al 2006;Leitner & Catchpole 2007). However, the exact mechanisms that guide and constrain vocal development remain elusive.…”

Section: Introductionmentioning

confidence: 99%

“…Yet other mechanisms must be present when birds modify their songs later in life. Leitner & Catchpole (2007) conducted an experiment with male canaries that experienced different social and auditory conditions before and after sexual maturation. Males in one group were raised individually in acoustic isolation, males in another group were raised together as peers but without an adult song model, and control males were raised in a communal aviary with adult conspecifics.…”

Section: Introductionmentioning

confidence: 99%

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Song learning in domesticated canaries in a restricted acoustic environment

et al. 2009

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Many songbirds learn their songs early in life from a song model. In the absence of such a model, they develop an improvised song that often lacks the species-typical song structure. Open-ended learners, such as the domesticated canary, are able to modify their songs in adulthood, although the mechanisms that guide and time the song-learning process are still not fully understood. In a previous study, we showed that male domesticated canaries lacking an adult song model in their first year substantially change their song repertoire and composition when exposed to normally reared conspecifics in their second year. Here, we investigate song development in descendants of canaries that were raised and kept as a peer group without a song model. Such males represent tutors with abnormal song characteristics. Interestingly, the F 1 generation developed quite normal song structure, and when brought into an environment with normally raised canaries in their second year, they did not modify their songs substantially. These results suggest that contact with an adult song model early in life is crucial for song crystallization, but also that song development is at least partly guided by innate rules. They also question the existing classification of canaries as open-ended learners.

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Section: Resultsmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Section: (D) Song Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Song learning in domesticated canaries in a restricted acoustic environment

et al. 2009

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Developmental social isolation affects adult behavior, social interaction, and dopamine metabolite levels in zebrafish

Shams

Amlani

Buske

et al. 2017

Developmental Psychobiology

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The zebrafish is a social vertebrate and an excellent translational model for a variety of human disorders. Abnormal social behavior is a hallmark of several human brain disorders. Social behavioral problems can arise as a result of adverse early social environment. Little is known about the effects of early social isolation in adult zebrafish. We compared zebrafish that were isolated for either short (7 days) or long duration (180 days) to socially housed zebrafish, testing their behavior across ontogenesis (ages 10, 30, 60, 90, 120, 180 days), and shoal cohesion and wholebrain monoamines and their metabolites in adulthood. Long social isolation increased locomotion and decreased shoal cohesion and anxiety in the open-field in adult. Additionally, both short and long social isolation reduced dopamine metabolite levels in response to social stimuli. Thus, early social isolation has lasting effects in zebrafish, and may be employed to generate zebrafish models of human neuropsychiatric conditions. K E Y W O R D Sanxiety, dopamine, locomotor activity, social behavior, social isolation, Zebrafish

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Conservation and expression of IQ‐domain‐containing calpacitin gene products (neuromodulin/GAP‐43, neurogranin/RC3) in the adult and developing oscine song control system

Clayton¹,

George²,

Mello³

et al. 2008

Developmental Neurobiology

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Songbirds are appreciated for the insights they provide into regulated neural plasticity. Here we describe the comparative analysis and brain expression of two gene sequences encoding probable regulators of synaptic plasticity in songbirds: Neuromodulin (GAP-43) and Neurogranin (RC3). Both are members of the calpacitin family and share a distinctive conserved core domain that mediates interactions between calcium, calmodulin and protein kinase C signaling pathways. Comparative sequence analysis is consistent with known phylogenetic relationships, with songbirds most closely related to chicken and progressively more distant from mammals and fish. The C-terminus of Neurogranin is different in birds and mammals, and antibodies to the protein reveal high expression in adult zebra finches in cerebellar Purkinje cells, which has not been observed in other species. RNAs for both proteins are generally abundant in the telencephalon yet markedly reduced in certain nuclei of the song control system in adult canaries and zebra finches: Neuromodulin RNA is very low in RA and HVC (relative to the surrounding pallial areas), whereas Neurogranin RNA is conspicuously low in Area X (relative to surrounding striatum). In both cases, this selective down-regulation develops in the zebra finch during the juvenile song learning period, 25–45 days after hatching. These results suggest molecular parallels to the robust stability of the adult avian song control circuit.

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Song and brain development in canaries raised under different conditions of acoustic and social isolation over two years

Cited by 30 publications

References 33 publications

Song learning in domesticated canaries in a restricted acoustic environment

Song learning in domesticated canaries in a restricted acoustic environment

Developmental social isolation affects adult behavior, social interaction, and dopamine metabolite levels in zebrafish

Conservation and expression of IQ‐domain‐containing calpacitin gene products (neuromodulin/GAP‐43, neurogranin/RC3) in the adult and developing oscine song control system

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