Larval stomatopod eyes appear to be much simpler versions of adult compound eyes, lacking most of the visual pigment diversity and photoreceptor specializations. Our understanding of the visual pigment diversity of larval stomatopods, however, is based on four species, which severely limits our understanding of stomatopod eye ontogeny. To investigate several poorly understood aspects of stomatopod larval eye function, we tested two hypotheses surrounding the spectral absorption of larval visual pigments. First, we examined a broad range of species to determine if stomatopod larvae generally express a single, spectral class of photoreceptor. Using microspectrophotometry (MSP) on larvae captured in the field, we found data which further support this long-standing hypothesis. MSP was also used to test whether larval species from the same geographical region express visual pigments with similar absorption spectra. Interestingly, despite occupation of the same geographical location, we did not find evidence to support our second hypothesis. Rather, there was significant variation in visual pigment absorption spectra among sympatric species. These data are important to further our understanding of larval photoreceptor spectral diversity, which is beneficial to ongoing investigations into the ontogeny, physiology, and molecular evolution of stomatopod eyes.
|Original language||English (US)|
|Number of pages||9|
|Journal||Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology|
|State||Published - Mar 1 2016|
Bibliographical noteFunding Information:
The authors are very grateful to Dr. Ellis Loew (Cornell University, Ithaca, NY, USA) for the use of his field-portable microspectrophotometer. In addition, we would like to thank Dr. Megan Porter for assistance with DNA barcoding and specimen collection, Dr. Justin Marshall for the use of his field-portable cryomicrotome and assistance with night dive collections, as well as the staff at Lizard Island Research Station. This research was funded by a research Grant from the University of Maryland Baltimore County Graduate Student Association as well as the United States Air Force Office of Scientific Research (FA9550-12-1-0321).
© 2016, The Author(s).
- Visual ecology
- Visual pigment