Reproduction and developmental stages in the crinoid Isometra vivipara Mortensen, 1917 from the southwestern Atlantic
Isometra vivipara Mortensen, 1917, which was described one hundred years ago, represents a particular case within the feather stars of the southwestern Atlantic Ocean. This is a dioecious species in which the oocytes are fertilized in the ovary and not externally as in other species. Some authors ha...
Published in: | Polar Biology |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer
|
Subjects: | |
Online Access: | http://hdl.handle.net/11336/119452 |
id |
ftconicet:oai:ri.conicet.gov.ar:11336/119452 |
---|---|
record_format |
openpolar |
spelling |
ftconicet:oai:ri.conicet.gov.ar:11336/119452 2023-10-09T21:47:15+02:00 Reproduction and developmental stages in the crinoid Isometra vivipara Mortensen, 1917 from the southwestern Atlantic Pertossi, Renata Micaela Brogger, Martin Ignacio Penchaszadeh, Pablo Enrique Martinez, Mariano Ignacio application/pdf http://hdl.handle.net/11336/119452 eng eng Springer info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-019-02477-5 info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00300-019-02477-5 http://hdl.handle.net/11336/119452 Pertossi, Renata Micaela; Brogger, Martin Ignacio; Penchaszadeh, Pablo Enrique; Martinez, Mariano Ignacio; Reproduction and developmental stages in the crinoid Isometra vivipara Mortensen, 1917 from the southwestern Atlantic; Springer; Polar Biology; 42; 4; 4-2019; 807-816 0722-4060 1432-2056 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ BROODING BURDWOOD BANK/MPA NAMUNCURÁ CRINOIDEA ECHINODERMATA MARSUPIUM SOUTHERN OCEAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1007/s00300-019-02477-5 2023-09-24T19:15:10Z Isometra vivipara Mortensen, 1917, which was described one hundred years ago, represents a particular case within the feather stars of the southwestern Atlantic Ocean. This is a dioecious species in which the oocytes are fertilized in the ovary and not externally as in other species. Some authors have pointed out that I. vivipara stores spermatozoa in the genital pinnules of the female, although there is still no detailed data on how they reach the pinnule. Besides, this species is characterized by possessing a second sexually dimorphic trait and presents two incubation stages: one in the genital pinnules, and the second one attached in the cirri of the mother. In the present work, the reproduction and developmental stages of the I. vivipara were studied. Samples were taken from two cruises aboard the B/O “Puerto Deseado” to Burdwood Bank/MPA Namuncurá at 84–642 m depth, during March/April 2016 and April/May 2017. Four developmental stages were recognized: Embryo, Doliolaria larvae (inside the brood pouches), Cystidean, and Pentacrinoids (attached in the cirri of the mother). In addition, histological analysis showed that fertilization in I. vivipara could occur between the ovary and the marsupium. The egg measurements reached 0.35 mm in diameter—on of the largest egg size within South America and Antarctica comatulids—whereas for the larvae the largest registered diameter was 0.77 mm. These results are compared and discussed with all the available information of comatulids from South America and Antarctica. Fil: Pertossi, Renata Micaela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina Fil: Brogger, Martin Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; Argentina Fil: Penchaszadeh, Pablo Enrique. Consejo Nacional de Investigaciones ... Article in Journal/Newspaper Antarc* Antarctica Polar Biology Southern Ocean CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Southern Ocean Argentino Argentina Pablo ENVELOPE(-63.717,-63.717,-64.283,-64.283) Burdwood Bank ENVELOPE(-59.000,-59.000,-54.250,-54.250) Polar Biology 42 4 807 816 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
BROODING BURDWOOD BANK/MPA NAMUNCURÁ CRINOIDEA ECHINODERMATA MARSUPIUM SOUTHERN OCEAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
BROODING BURDWOOD BANK/MPA NAMUNCURÁ CRINOIDEA ECHINODERMATA MARSUPIUM SOUTHERN OCEAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Pertossi, Renata Micaela Brogger, Martin Ignacio Penchaszadeh, Pablo Enrique Martinez, Mariano Ignacio Reproduction and developmental stages in the crinoid Isometra vivipara Mortensen, 1917 from the southwestern Atlantic |
topic_facet |
BROODING BURDWOOD BANK/MPA NAMUNCURÁ CRINOIDEA ECHINODERMATA MARSUPIUM SOUTHERN OCEAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
Isometra vivipara Mortensen, 1917, which was described one hundred years ago, represents a particular case within the feather stars of the southwestern Atlantic Ocean. This is a dioecious species in which the oocytes are fertilized in the ovary and not externally as in other species. Some authors have pointed out that I. vivipara stores spermatozoa in the genital pinnules of the female, although there is still no detailed data on how they reach the pinnule. Besides, this species is characterized by possessing a second sexually dimorphic trait and presents two incubation stages: one in the genital pinnules, and the second one attached in the cirri of the mother. In the present work, the reproduction and developmental stages of the I. vivipara were studied. Samples were taken from two cruises aboard the B/O “Puerto Deseado” to Burdwood Bank/MPA Namuncurá at 84–642 m depth, during March/April 2016 and April/May 2017. Four developmental stages were recognized: Embryo, Doliolaria larvae (inside the brood pouches), Cystidean, and Pentacrinoids (attached in the cirri of the mother). In addition, histological analysis showed that fertilization in I. vivipara could occur between the ovary and the marsupium. The egg measurements reached 0.35 mm in diameter—on of the largest egg size within South America and Antarctica comatulids—whereas for the larvae the largest registered diameter was 0.77 mm. These results are compared and discussed with all the available information of comatulids from South America and Antarctica. Fil: Pertossi, Renata Micaela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina Fil: Brogger, Martin Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; Argentina Fil: Penchaszadeh, Pablo Enrique. Consejo Nacional de Investigaciones ... |
format |
Article in Journal/Newspaper |
author |
Pertossi, Renata Micaela Brogger, Martin Ignacio Penchaszadeh, Pablo Enrique Martinez, Mariano Ignacio |
author_facet |
Pertossi, Renata Micaela Brogger, Martin Ignacio Penchaszadeh, Pablo Enrique Martinez, Mariano Ignacio |
author_sort |
Pertossi, Renata Micaela |
title |
Reproduction and developmental stages in the crinoid Isometra vivipara Mortensen, 1917 from the southwestern Atlantic |
title_short |
Reproduction and developmental stages in the crinoid Isometra vivipara Mortensen, 1917 from the southwestern Atlantic |
title_full |
Reproduction and developmental stages in the crinoid Isometra vivipara Mortensen, 1917 from the southwestern Atlantic |
title_fullStr |
Reproduction and developmental stages in the crinoid Isometra vivipara Mortensen, 1917 from the southwestern Atlantic |
title_full_unstemmed |
Reproduction and developmental stages in the crinoid Isometra vivipara Mortensen, 1917 from the southwestern Atlantic |
title_sort |
reproduction and developmental stages in the crinoid isometra vivipara mortensen, 1917 from the southwestern atlantic |
publisher |
Springer |
url |
http://hdl.handle.net/11336/119452 |
long_lat |
ENVELOPE(-63.717,-63.717,-64.283,-64.283) ENVELOPE(-59.000,-59.000,-54.250,-54.250) |
geographic |
Southern Ocean Argentino Argentina Pablo Burdwood Bank |
geographic_facet |
Southern Ocean Argentino Argentina Pablo Burdwood Bank |
genre |
Antarc* Antarctica Polar Biology Southern Ocean |
genre_facet |
Antarc* Antarctica Polar Biology Southern Ocean |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-019-02477-5 info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00300-019-02477-5 http://hdl.handle.net/11336/119452 Pertossi, Renata Micaela; Brogger, Martin Ignacio; Penchaszadeh, Pablo Enrique; Martinez, Mariano Ignacio; Reproduction and developmental stages in the crinoid Isometra vivipara Mortensen, 1917 from the southwestern Atlantic; Springer; Polar Biology; 42; 4; 4-2019; 807-816 0722-4060 1432-2056 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1007/s00300-019-02477-5 |
container_title |
Polar Biology |
container_volume |
42 |
container_issue |
4 |
container_start_page |
807 |
op_container_end_page |
816 |
_version_ |
1779310218713235456 |