Drosophila guttifera

Walker, 1849

Drosophila guttifera is a of in the Drosophila quinaria species group, notable for its distinctive polka-dotted pigmentation pattern. The species feeds on rotting mushrooms and has become an important model organism for studying the genetic mechanisms underlying complex morphological pattern formation. Its was sequenced in 2015, revealing how cis-regulatory enhancers drive wing pattern development. Research has demonstrated that the wing spot pattern shows thermal plasticity and is regulated by the wingless morphogen, while the and tan genes are co-expressed to produce the abdominal and wing melanin spot patterns.

Drosophila guttifera by (c) Jessica, some rights reserved (CC BY), uploaded by Jessica. Used under a CC-BY license.

Pronunciation

How to pronounce Drosophila guttifera: /drəˈsɒfɪlə ˌɡʌtɪˈfɪərə/

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Identification

Distinguished from other Drosophila by its sexually polka-dotted pigmentation pattern, consisting of multiple dark spots on a clear wing background. The displays six longitudinal rows of melanin spots. Wing spots are smaller relative to overall wing size when reared at lower temperatures due to thermal plasticity. Similar to other quinaria group species in general body plan but readily identified by the unique spotted wing pattern.

Images

Habitat

Associated with environments where rotting mushrooms occur; specific microhabitat details not well documented in available sources.

Diet

Feeds on rotting mushrooms.

Life Cycle

Development includes a pupal period during which spot pattern specification occurs; the most sensitive stage for thermal plasticity of spot size occurs during part of the pupal period when wingless morphogen is expressed in the polka-dotted pattern.

Behavior

Requires light conditions for mating; no mating occurs in complete darkness. No courtship sound has been observed, indicating reliance on visual cues for mating . presence influences mate choice in both sexes. Females discriminate between and heterospecific wings in mate choice, but the wing pigmentation pattern itself does not contribute to mate choice in either sex.

Ecological Role

; contributes to through consumption of rotting mushrooms.

Human Relevance

Used as a model organism in developmental genetics and evolutionary biology research, particularly for studying the genetic mechanisms of complex pattern formation, cis-regulatory evolution, and thermal plasticity in morphological traits. sequencing in 2015 provided insights into enhancer-mediated evolution of patterns.

Similar Taxa

Drosophila melanogasterWidely used model organism with which D. guttifera is compared in mate choice studies; D. guttifera females discriminate against D. melanogaster , which lack pigmentation patterns.
Other Drosophila quinaria group speciesShare similar ecological association with rotting mushrooms but lack the distinctive polka-dotted pattern of D. guttifera.