The "mexican dancer" in Ecuador: molecular confirmation, embryology and planktotrophy in the sea slug Elysia diomedea

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dc.careerEscuela de Ciencias Biológicases
dc.category.authorprincipalen_US
dc.contributor.authorPérez Vaca, Oscar Damián
dc.contributor.correspondingPérez Vaca, Óscar Damián
dc.countryEcuadores
dc.date.accessioned2023-11-04T21:34:47Z
dc.date.available2023-11-04T21:34:47Z
dc.date.issued2020-08
dc.dedication.authorTCes
dc.description.abstractElysia diomedea varies in adult size and color across its geographical distribution in Ecuador. Because of morphological variation and the absence of genetic information for this species in Ecuador, we analyzed mtDNA sequences in three populations (Ballenita, La Cabuya, and Mompiche) and confirmed that (1) individuals from the three locations belonged to E. diomedea and (2) that there was no population structure that could explain their morphological differences. Next, we analyzed general aspects about the reproductive biology and embryology of this species. Live slugs from the Ballenita population were maintained and reproduced ex situ. Egg ribbons and embryos were fixed and observed by brightfield and confocal microscopy. We observed a single embryo per capsule, 98 embryos per mm2 of egg ribbon, and compared the cleavage pattern of this species to other heterobranchs and spiralians. E. diomedea early development was characterized by a slight unequal first cleavage, occurrence of a 3-cell stage in the second cleavage, and the formation of an enlarged second quartet of micromeres. We observed clear yolk bodies in the egg capsules of some eggs ribbons at early stages of development. Both reproductive and embryological characteristics, such as presence of stomodeum in the larva, and ingestion of particles after hatching confirmed the planktotrophic veliger larvae of this species, consistent with the majority of sacoglossans from the Eastern and Northeast Pacific Oceans.en_US
dc.facultyCiencias Exactas y Naturaleses
dc.id.author1712736436
dc.id.type1
dc.identifier.doi10.1387/ijdb.200157fo
dc.identifier.issn0214-6282
dc.identifier.urihttps://repositorio.puce.edu.ec/handle/123456789/5348
dc.indexed.databaseOtheres
dc.language.isoen
dc.list.authorsMoreano-Arrobo L., Pérez, Ó., Brown, F., Oyarzún, F. y Canales-Aguirre, C.
dc.magazine.pageRange1-31
dc.magazine.titleThe International Journal of Developmental Biologyen_US
dc.magazine.volumeChapter1
dc.rightsOpenAccessen
dc.statepublisheden_US
dc.subjectYema extrazigótica (EZY)es
dc.subjectEscisión en espirales
dc.subjectbiología reproductivaes
dc.subjectE. diomedeaes
dc.subjectYema extrazigótica (EZY)
dc.subjectEscisión en espiral
dc.subjectbiología reproductiva
dc.subjectE. diomedea
dc.titleThe "mexican dancer" in Ecuador: molecular confirmation, embryology and planktotrophy in the sea slug Elysia diomedeaen_US
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