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Area of Science:

  • Marine Biology
  • Vision Science
  • Molecular Biology

Background:

  • Stomatopods exhibit complex visual systems with numerous photoreceptors and opsins in adults.
  • The opsin repertoire and light-sensing capabilities of larval stomatopods remain poorly understood.
  • Previous research suggested limited visual abilities in larvae, but recent findings indicate greater complexity.

Purpose of the Study:

  • To molecularly characterize opsin expression across developmental stages in stomatopods.
  • To investigate changes in opsin repertoire during the larval to adult transition.
  • To provide evidence for light detection capabilities in stomatopod larvae.

Main Methods:

  • Transcriptomic analysis of opsin expression from embryo to adult stages.
  • Focus on developmental transition periods in *Pullosquilla thomassini* and *Gonodactylaceus falcatus*.
  • Analysis of spectral tuning sites to infer absorbance properties.

Main Results:

  • Opsin transcripts from short, middle, and long wavelength-sensitive clades were identified in both species.
  • Evidence suggests differences in spectral absorbance within these opsin clades.
  • This study is the first to document developmental changes in the stomatopod opsin repertoire.

Conclusions:

  • Stomatopod larvae possess a more sophisticated visual system than previously assumed.
  • Opsin repertoire changes significantly during development, supporting broad light detection.
  • Novel evidence confirms light detection across the visual spectrum in stomatopod larvae.