Reproductive system morphology of giant barnacle “picoroco” Austromegabalanus psittacus (Molina, 1782) (Cirripedia, Balanidae)
Morfología del aparato reproductor del picoroco Austromegabalanus psittacus (Molina, 1782) (Cirripedia, Balanidae)
| dc.contributor | en-US | |
| dc.contributor | es-ES | |
| dc.creator | Contreras, Catalina | |
| dc.creator | Luna, Nicolás | |
| dc.creator | Dupré, Enrique | |
| dc.date | 2017-02-23 | |
| dc.date.accessioned | 2020-11-05T13:35:05Z | |
| dc.date.available | 2020-11-05T13:35:05Z | |
| dc.identifier | http://lajar.ucv.cl/index.php/rlajar/article/view/vol43-issue3-fulltext-24 | |
| dc.identifier | 10.3856/vol43-issue3-fulltext-24 | |
| dc.identifier.uri | https://revistaschilenas.uchile.cl/handle/2250/158418 | |
| dc.description | The reproductive structures of Austromegabalanus psittacus in two periods of sexual maturation were described. This organism is a simultaneous hermaphrodite, which transfers his sperm through an intromittent organ or penis. The male reproductive system consists of testes arranged in acini distributed in a tree-like structure, two vasa deferentia that come together to form the ejaculatory duct at the base of the penis. The female reproductive system consists mainly of a saccular ovary that surrounds the main body, which is internally organized into elongated acini bags containing oogonia and previtellogenic oocytes attached to the internal wall and free vitellogenic and mature oocyte within the lumen. Remarkable differences were observed in the ovaries between organisms collected in September and October. In September, they showed a yellowish ovary with two compact structures inside, called ovigerous lamellae with fertilized oocytes, embryos in different development stages and free nauplius in the body cavity, whereas in October the ovaries have a whitish in color and present a thick wall with a milky fluid inside. | en-US |
| dc.description | Descripción morfológica de las estructuras reproductivas de Austromegabalanus psittacus en dos periodos de maduración sexual. Se determinó que es un organismo hermafrodita que transfiere sus espermatozoides mediante un órgano intromitente o pene. El aparato reproductor masculino consta de testículos organizados en acinos que se distribuyen arboriformemente, dos conductos deferentes que se unen en la base del pene para formar el conducto eyaculador. El aparato reproductor femenino consiste principalmente en un ovario sacular que rodea al resto del cuerpo y se encuentra adherido a través de musculatura a la base de las placas operculares. Se organiza internamente en sacos acinares elongados que contienen ovogonias y ovocitos previtelogénicos adheridos a su pared y vitelogénicos y maduros libres dentro del lumen. Se observaron diferencias notorias en los ovarios entre los organismos recolectados en septiembre y octubre. En septiembre presentaron coloración amarillenta y en su interior se encontraron dos estructuras compactas denominadas lamelas ovígeras en cuyo interior se observaron ovocitos fecundados, embriones en diferentes estados de desarrollo y nauplius libres en la cavidad corporal; en octubre los ovarios son gruesos, blanquecinos y con gran cantidad de fluido lechoso en su interior | es-ES |
| dc.format | application/pdf | |
| dc.language | spa | |
| dc.publisher | Pontificia Universidad Católica de Valparaíso | en-US |
| dc.relation | http://lajar.ucv.cl/index.php/rlajar/article/view/vol43-issue3-fulltext-24/273 | |
| dc.relation | http://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol43-issue3-fulltext-24/377 | |
| dc.relation | http://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol43-issue3-fulltext-24/378 | |
| dc.source | Latin American Journal of Aquatic Research; Vol 43, No 3 (2015); 607-615 | en-US |
| dc.source | Plataforma para envío de artículos - Latin American Journal of Aquatic Research; Vol 43, No 3 (2015); 607-615 | es-ES |
| dc.source | 0718-560X | |
| dc.source | 0718-560X | |
| dc.subject | Austromegabalanus psittacus; cirripeds; male reproductive system; female reproductive system | en-US |
| dc.subject | Austromegabalanus psittacus; cirripedios; aparato reproductor masculino; aparato reproductor femenino | es-ES |
| dc.title | Reproductive system morphology of giant barnacle “picoroco” Austromegabalanus psittacus (Molina, 1782) (Cirripedia, Balanidae) | en-US |
| dc.title | Morfología del aparato reproductor del picoroco Austromegabalanus psittacus (Molina, 1782) (Cirripedia, Balanidae) | es-ES |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
| dc.type | en-US | |
| dc.type | es-ES |