Histological analysis provides further insights into Harpagifer antarcticus reproductive biology at the western Antarctic Peninsula
Prior understanding of Harpagifer antarcticus reproductive biology was based exclusively on macroscopic observations of its gonadal maturation cycle. Our present study with H. antarcticus specimens collected in summer of 2019 at Paradise Bay (PB), Western Antarctic Peninsula (WAP), provides a) addit...
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ftconicet:oai:ri.conicet.gov.ar:11336/167907 2023-10-09T21:47:14+02:00 Histological analysis provides further insights into Harpagifer antarcticus reproductive biology at the western Antarctic Peninsula Novillo Estofan, Julio Manuel Moreira, María Eugenia Macchi, Gustavo Javier Barrera Oro, Esteban application/pdf http://hdl.handle.net/11336/167907 eng eng Springer info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/10.1007/s00300-021-02953-x info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-021-02953-x http://hdl.handle.net/11336/167907 Novillo Estofan, Julio Manuel; Moreira, María Eugenia; Macchi, Gustavo Javier; Barrera Oro, Esteban; Histological analysis provides further insights into Harpagifer antarcticus reproductive biology at the western Antarctic Peninsula; Springer; Polar Biology; 44; 11; 11-2021; 2165-2175 0722-4060 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ GONADAL HISTOLOGY PARADISE BAY REPRODUCTIVE ECOLOGY SPAWNING PERIOD 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/s00300-021-02953-x 2023-09-24T20:22:51Z Prior understanding of Harpagifer antarcticus reproductive biology was based exclusively on macroscopic observations of its gonadal maturation cycle. Our present study with H. antarcticus specimens collected in summer of 2019 at Paradise Bay (PB), Western Antarctic Peninsula (WAP), provides a) additional reproductive parameters, and b) for first time, a histological analysis of the gonads, clarifying understanding of the spawning period of the species in the area. In females the gonado-somatic index was 5.3–19.6%, leading clutch oocytes was 0.94–1.95 mm, and total fecundity ranged between 408 and 1723 oocytes/female (X ± SD = 794 ± 328, n = 22). The histology allowed the identification of gravid females with oocytes in late vitellogenesis with evidence of ongoing hydration processes and spent females with post-ovulatory follicles. The presence of spermatozoa in mature testes indicated that the males were in developing and ripe condition. Our reproductive data for H. antarcticus at PB, validated with histology, indicate that the species was in spawning during summer, in agreement with a previous report of a late spring–summer spawning for the species at the same site. Literature data indicate that at the South Orkney Islands, H. antarcticus spawns three months earlier (May–June), probably associated with differential environmental factors between this area and the WAP. Our findings support the hypothesis that the life cycle characteristics of H. antarcticus—e.g., low fecundity and short pelagic phase—promote the isolation of populations as reflected in differences in the reproductive timing. Fil: Novillo Estofan, Julio Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina Fil: Moreira, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnolológico Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología. ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula antarcticus Polar Biology South Orkney Islands CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic Antarctic Peninsula Argentino Argentina South Orkney Islands ENVELOPE(-45.500,-45.500,-60.583,-60.583) Polar Biology 44 11 2165 2175 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
GONADAL HISTOLOGY PARADISE BAY REPRODUCTIVE ECOLOGY SPAWNING PERIOD https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
GONADAL HISTOLOGY PARADISE BAY REPRODUCTIVE ECOLOGY SPAWNING PERIOD https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Novillo Estofan, Julio Manuel Moreira, María Eugenia Macchi, Gustavo Javier Barrera Oro, Esteban Histological analysis provides further insights into Harpagifer antarcticus reproductive biology at the western Antarctic Peninsula |
topic_facet |
GONADAL HISTOLOGY PARADISE BAY REPRODUCTIVE ECOLOGY SPAWNING PERIOD https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
Prior understanding of Harpagifer antarcticus reproductive biology was based exclusively on macroscopic observations of its gonadal maturation cycle. Our present study with H. antarcticus specimens collected in summer of 2019 at Paradise Bay (PB), Western Antarctic Peninsula (WAP), provides a) additional reproductive parameters, and b) for first time, a histological analysis of the gonads, clarifying understanding of the spawning period of the species in the area. In females the gonado-somatic index was 5.3–19.6%, leading clutch oocytes was 0.94–1.95 mm, and total fecundity ranged between 408 and 1723 oocytes/female (X ± SD = 794 ± 328, n = 22). The histology allowed the identification of gravid females with oocytes in late vitellogenesis with evidence of ongoing hydration processes and spent females with post-ovulatory follicles. The presence of spermatozoa in mature testes indicated that the males were in developing and ripe condition. Our reproductive data for H. antarcticus at PB, validated with histology, indicate that the species was in spawning during summer, in agreement with a previous report of a late spring–summer spawning for the species at the same site. Literature data indicate that at the South Orkney Islands, H. antarcticus spawns three months earlier (May–June), probably associated with differential environmental factors between this area and the WAP. Our findings support the hypothesis that the life cycle characteristics of H. antarcticus—e.g., low fecundity and short pelagic phase—promote the isolation of populations as reflected in differences in the reproductive timing. Fil: Novillo Estofan, Julio Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina Fil: Moreira, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnolológico Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología. ... |
format |
Article in Journal/Newspaper |
author |
Novillo Estofan, Julio Manuel Moreira, María Eugenia Macchi, Gustavo Javier Barrera Oro, Esteban |
author_facet |
Novillo Estofan, Julio Manuel Moreira, María Eugenia Macchi, Gustavo Javier Barrera Oro, Esteban |
author_sort |
Novillo Estofan, Julio Manuel |
title |
Histological analysis provides further insights into Harpagifer antarcticus reproductive biology at the western Antarctic Peninsula |
title_short |
Histological analysis provides further insights into Harpagifer antarcticus reproductive biology at the western Antarctic Peninsula |
title_full |
Histological analysis provides further insights into Harpagifer antarcticus reproductive biology at the western Antarctic Peninsula |
title_fullStr |
Histological analysis provides further insights into Harpagifer antarcticus reproductive biology at the western Antarctic Peninsula |
title_full_unstemmed |
Histological analysis provides further insights into Harpagifer antarcticus reproductive biology at the western Antarctic Peninsula |
title_sort |
histological analysis provides further insights into harpagifer antarcticus reproductive biology at the western antarctic peninsula |
publisher |
Springer |
url |
http://hdl.handle.net/11336/167907 |
long_lat |
ENVELOPE(-45.500,-45.500,-60.583,-60.583) |
geographic |
Antarctic Antarctic Peninsula Argentino Argentina South Orkney Islands |
geographic_facet |
Antarctic Antarctic Peninsula Argentino Argentina South Orkney Islands |
genre |
Antarc* Antarctic Antarctic Peninsula antarcticus Polar Biology South Orkney Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula antarcticus Polar Biology South Orkney Islands |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/10.1007/s00300-021-02953-x info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-021-02953-x http://hdl.handle.net/11336/167907 Novillo Estofan, Julio Manuel; Moreira, María Eugenia; Macchi, Gustavo Javier; Barrera Oro, Esteban; Histological analysis provides further insights into Harpagifer antarcticus reproductive biology at the western Antarctic Peninsula; Springer; Polar Biology; 44; 11; 11-2021; 2165-2175 0722-4060 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/s00300-021-02953-x |
container_title |
Polar Biology |
container_volume |
44 |
container_issue |
11 |
container_start_page |
2165 |
op_container_end_page |
2175 |
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1779310172087255040 |