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dc.contributor.author
Novillo Estofan, Julio Manuel
dc.contributor.author
Moreira, María Eugenia
dc.contributor.author
Macchi, Gustavo Javier
dc.contributor.author
Barrera Oro, Esteban
dc.date.available
2022-12-26T16:40:03Z
dc.date.issued
2019-11
dc.identifier.citation
Novillo Estofan, Julio Manuel; Moreira, María Eugenia; Macchi, Gustavo Javier; Barrera Oro, Esteban; Reproductive effort in Chaenocephalus aceratus validated by gonadal histology: inshore sites serve as spawning grounds for some notothenioids; Springer; Polar Biology; 42; 11; 11-2019; 1959-1972
dc.identifier.issn
0722-4060
dc.identifier.uri
http://hdl.handle.net/11336/182338
dc.description.abstract
The knowledge of the reproductive biology of blackfin icefish Chaenocephalus aceratus in the southern Scotia Arc has been based, primarily on macroscopic observations of its maturation cycle, and lately, on histological analysis of ovaries in developing phase exclusively. Our study on reproduction of C. aceratus collected at Potter Cove (PC), South Shetland Islands (SSI), highlights the importance of histologic techniques to validate gonadal macroscopic maturity stages to estimate reliable reproductive parameters, in this work obtained from gravid females. Gonado-somatic index (GSI) of 7–21% (13.50 ± 4.20, n = 21), mature oocytes of 2.5–4.0 mm and total fecundity (TF) of 7372–17,212 oocytes/female (12,466 ± 2911, n = 13) were estimated. Although it is known that variations in the reproductive parameters of C. aceratus between areas of the Scotia Arc are linked to local environmental factors (i.e. hydrographic or biotic), we found close agreement between our results from PC and recent literature data for the South Georgia population, which also arose from the analysis of gravid females. Differently, lower GSIs and oocyte sizes, and higher TF reported lately for the offshore SSI population might be at least partially explained by the fact that these parameters were estimated from the analysis of developing ovaries. Based on our sampling and reproductive effort data, we suggest: (1) the spawning period of C. aceratus at the SSI might be more extended than previous belief, starting from late December until June; (2) the sheltered waters of PC might be a spawning site for C. aceratus, which highlights the role of nearshore areas as spawning grounds of notothenioids.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CHANNICHTHYIDAE
dc.subject
MARINE ECOLOGY
dc.subject
POTTER COVE
dc.subject
SOUTH SHETLAND ISLANDS
dc.subject.classification
Ecología
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Reproductive effort in Chaenocephalus aceratus validated by gonadal histology: inshore sites serve as spawning grounds for some notothenioids
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-11-17T17:34:20Z
dc.identifier.eissn
1432-2056
dc.journal.volume
42
dc.journal.number
11
dc.journal.pagination
1959-1972
dc.journal.pais
Alemania
dc.journal.ciudad
Berlin
dc.description.fil
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
dc.description.fil
Fil: Moreira, María Eugenia. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Macchi, Gustavo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Subsede Instituto Nacional de Investigación y Desarrollo Pesquero; Argentina
dc.description.fil
Fil: Barrera Oro, Esteban. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
dc.journal.title
Polar Biology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/10.1007/s00300-019-02571-8
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00300-019-02571-8
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