Extravisual opsins in the blind shrimp Creaseria morleyi: presence and expression

Abstract The presence of a long-wavelength sensitive (LWS) opsin gene was demonstrated in the stygobitic crustacean Creaseria morleyi (Creaser, 1936) by PCR readings from genomic DNA. In order to find the expression of this gene in extraocular tissue, shrimps were collected and placed in a tank to e...

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Bibliographic Details
Published inNauplius Vol. 31
Main Authors Pérez-Calderón, José R., Pérez-León, Jorge A., Simões, Nuno, Aguirre-Ramírez, Marisela, Malpica-Calderón, Roxana E., Botello, Alejandro
Format Journal Article
LanguageEnglish
Portuguese
Published Sociedade Brasileira de Carcinologia 2023
Subjects
Photopigment
phototransduction
stygofauna
ZOOLOGY
Photopigment
stygofauna
phototransduction
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Summary:Abstract The presence of a long-wavelength sensitive (LWS) opsin gene was demonstrated in the stygobitic crustacean Creaseria morleyi (Creaser, 1936) by PCR readings from genomic DNA. In order to find the expression of this gene in extraocular tissue, shrimps were collected and placed in a tank to expose them to light/dark conditions for a period of 72 hours, and immediately after, sacrificed and sampled for RNA in the eyes, cephalothorax, abdomen, and sixth abdominal segment plus uropods. The transcripts of the LWS opsin gene were found in the eyes and abdomen of individuals exposed to light. The expression of these opsins could be involved in extravisual functions such as synchronization of their biological processes with environmental cycles related to diurnal vertical migration.
ISSN:2358-2936
2358-2936
DOI:10.1590/2358-2936e2023024