Eyeless Morphotype in the Southern Stingray (Dasyatis americana): a Non-lethal and Frequent Abnormality from the Southern Gulf of Mexico.

Manuel Mendoza-Carranza, Diego Santiago-Alarcón, Juan Carlos Pérez-Jimenez, Chrystian Carolina Hernández-Lazo


DOI: https://doi.org/10.3856/vol44-issue3-fulltext-4

Abstract


An eyeless morphotype in Southern Stingray (Dasyatis americana) is described and implications about its presence in tropical marine coastal zones are discussed based on the description of six individuals collected from commercial small-scale fisheries at southern Gulf of Mexico on the Campeche bank. Additionally to the eyeless characteristic, both regular (presence of eye) and eyeless (absence of eye) morphotypes have contrasting quantitative values and qualitative features for different phenotypic traits (color, teeth number, pelvic fin and spiracle form). Mature female and male eyeless morphotype had functional internal reproductive structures. Using the bar code gene we found conclusive evidence that the eyeless morphotype belongs to the species D. americana. This is the first report on reproductively functional eyeless individuals of this species or close relatives elsewhere, which live sympatrically with regular individuals in the southern Gulf of Mexico.


Mendoza-Carranza M, Santiago-Alarcón D, Pérez-Jimenez J, Hernández-Lazo C. Eyeless Morphotype in the Southern Stingray (Dasyatis americana): a Non-lethal and Frequent Abnormality from the Southern Gulf of Mexico.. Lat. Am. J. Aquat. Res.. 2017;44(3). Available from: doi:10.3856/vol44-issue3-fulltext-4 [Accessed 20 Jan. 2019].
Mendoza-Carranza, M., Santiago-Alarcón, D., Pérez-Jimenez, J., & Hernández-Lazo, C. (2017). Eyeless Morphotype in the Southern Stingray (Dasyatis americana): a Non-lethal and Frequent Abnormality from the Southern Gulf of Mexico.. Latin American Journal of Aquatic Research, 44(3). doi:http://dx.doi.org/10.3856/vol44-issue3-fulltext-4