RRC ID 60787
Author Keesey IW, Grabe V, Knaden M, Hansson BS.
Title Divergent sensory investment mirrors potential speciation via niche partitioning across Drosophila.
Journal Elife
Abstract The examination of phylogenetic and phenotypic characteristics of the nervous system, such as behavior and neuroanatomy, can be utilized as a means to assess speciation. Recent studies have proposed a fundamental tradeoff between two sensory organs, the eye and the antenna. However, the identification of ecological mechanisms for this observed tradeoff have not been firmly established. Our current study examines several monophyletic species within the obscura group, and asserts that despite their close relatedness and overlapping ecology, they deviate strongly in both visual and olfactory investment. We contend that both courtship and microhabitat preferences support the observed inverse variation in these sensory traits. Here, this variation in visual and olfactory investment seems to provide relaxed competition, a process by which similar species can use a shared environment differently and in ways that help them coexist. Moreover, that behavioral separation according to light gradients occurs first, and subsequently, courtship deviations arise.
Volume 9
Published 2020-6-30
DOI 10.7554/eLife.57008
PII 57008
PMID 32602834
PMC PMC7402680
MeSH Animals Arthropod Antennae / physiology* Compound Eye, Arthropod / physiology* Courtship Drosophila / genetics* Drosophila / physiology* Ecology Ecosystem Female Genetic Speciation* Image Processing, Computer-Assisted Male Phenotype Phylogeny Sexual Behavior, Animal* Smell Species Specificity Vision, Ocular Wings, Animal / physiology
IF 7.08
Times Cited 1
Drosophila E-12733 E-12701 E-12710