The Direction of response selectivity between conspecific and heterospecific auditory stimuli varies with response metric

Stenstrom, K. H.; Voss, Henning U.; Tokarev, Kirill; Phan, Mimi L.; Hauber, Márk E.

doi:10.1016/j.bbr.2021.113534

Cited by 1 publication

(1 citation statement)

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“…This suggests that the properties of the early-stage auditory neural circuit are evolutionally conserved in fruit flies. In the zebra finch, neurons that preferentially respond to the conspecific song are located in the latter stage of the auditory neural circuit 68 , 69 . The combination of these studies and our findings provides some support for the conceptual premise that the properties of peripheral neurons may be evolutionally less flexible than that of higher-order neurons so that species-specificity rarely emerges in the early stage of the neural circuit that processes auditory information.…”

Section: Discussionmentioning

confidence: 99%

Evolutionary conservation and diversification of auditory neural circuits that process courtship songs in Drosophila

Ohashi

Ishikawa

Awasaki

et al. 2023

Sci Rep

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Acoustic communication signals diversify even on short evolutionary time scales. To understand how the auditory system underlying acoustic communication could evolve, we conducted a systematic comparison of the early stages of the auditory neural circuit involved in song information processing between closely-related fruit-fly species. Male Drosophila melanogaster and D. simulans produce different sound signals during mating rituals, known as courtship songs. Female flies from these species selectively increase their receptivity when they hear songs with conspecific temporal patterns. Here, we firstly confirmed interspecific differences in temporal pattern preferences; D. simulans preferred pulse songs with longer intervals than D. melanogaster. Primary and secondary song-relay neurons, JO neurons and AMMC-B1 neurons, shared similar morphology and neurotransmitters between species. The temporal pattern preferences of AMMC-B1 neurons were also relatively similar between species, with slight but significant differences in their band-pass properties. Although the shift direction of the response property matched that of the behavior, these differences are not large enough to explain behavioral differences in song preferences. This study enhances our understanding of the conservation and diversification of the architecture of the early-stage neural circuit which processes acoustic communication signals.

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Section: Discussionmentioning

confidence: 99%