Modal and empirical lengths at sexual maturity for six deep-sea species in Ecuadorian oceanic waters
The objective of the present work was to establish modal lengths, empirical lengths at sexual maturity, and proportions of mature individuals of six deep-sea species from the bycatch of the experimental fishery for Patagonian toothfish (Dissostichus eleginoides). Fishing was conducted in Ecuadorian...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2024
|
Subjects: | |
Online Access: | https://dialnet.unirioja.es/servlet/oaiart?codigo=9396482 |
id |
ftdialnet:oai:dialnet.unirioja.es:ART0001663258 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Dialnet - Portada de revistas (Universidad de La Rioja) |
op_collection_id |
ftdialnet |
language |
English |
topic |
Dissostichus eleginoides experimental fishery kernel density longline mature individuals pesquería experimental densidad de núcleo palangre individuos maduros |
spellingShingle |
Dissostichus eleginoides experimental fishery kernel density longline mature individuals pesquería experimental densidad de núcleo palangre individuos maduros Zambrano, Rene Coello Salazar, Dialhy María Herrera, Marco Modal and empirical lengths at sexual maturity for six deep-sea species in Ecuadorian oceanic waters |
topic_facet |
Dissostichus eleginoides experimental fishery kernel density longline mature individuals pesquería experimental densidad de núcleo palangre individuos maduros |
description |
The objective of the present work was to establish modal lengths, empirical lengths at sexual maturity, and proportions of mature individuals of six deep-sea species from the bycatch of the experimental fishery for Patagonian toothfish (Dissostichus eleginoides). Fishing was conducted in Ecuadorian oceanic waters by only one vessel, between 2017 and 2021. Modal lengths were identified using frequency distributions. The length at sexual maturity (Lm) was estimated using the empirical equation: Ln Lm = -0.1189 + 0.9157 * Ln (Lmax). Modal lengths presented a little annual increment in Antimora rostrata and Coryphaenoides armatus while the values decreased for Centroscymnus owstonii, C. delsolari, and Hydrolagus melanophasma. Interannual lengths were similar for Etmopterus granulosus. Modal lengths were higher than the sexual maturity length for H. melanophasma, C. delsolari, C. owstonii and A. rostrata. Furthermore, Coryphaenoides armatus showed a similar value and E. granulosus a lower modal length. Empirical length at sexual maturity was between 56.35 and 66.26 cm TL for all species except for H. melanophasma, which was 100.53 cm TL. Antimora rostrata and C. armatus presented an increment of mature individuals while the annual percentage decreased for H. melanophasma, C. owstonii, and C. delsolari. Etmopterus granulosus showed a lower proportion of mature individuals. El objetivo del presente trabajo fue establecer tallas modales, tallas empíricas de madurez sexual y proporciones de individuos maduros de seis especies de aguas profundas provenientes de la captura incidental de la pesquería experimental de merluza negra (Dissostichus eleginoides). La pesca fue realizada en aguas oceánicas ecuatorianas por un solo barco entre 2017 y 2021. Las tallas modales se identificaron mediante distribuciones de frecuencia. La talla de madurez sexual (Lm) se estimó mediante la ecuación empírica Ln Lm = -0,1189 + 0,9157 * Ln (Lmax). Las tallas modales presentaron un pequeño incremento anual en Antimora rostrata y ... |
format |
Article in Journal/Newspaper |
author |
Zambrano, Rene Coello Salazar, Dialhy María Herrera, Marco |
author_facet |
Zambrano, Rene Coello Salazar, Dialhy María Herrera, Marco |
author_sort |
Zambrano, Rene |
title |
Modal and empirical lengths at sexual maturity for six deep-sea species in Ecuadorian oceanic waters |
title_short |
Modal and empirical lengths at sexual maturity for six deep-sea species in Ecuadorian oceanic waters |
title_full |
Modal and empirical lengths at sexual maturity for six deep-sea species in Ecuadorian oceanic waters |
title_fullStr |
Modal and empirical lengths at sexual maturity for six deep-sea species in Ecuadorian oceanic waters |
title_full_unstemmed |
Modal and empirical lengths at sexual maturity for six deep-sea species in Ecuadorian oceanic waters |
title_sort |
modal and empirical lengths at sexual maturity for six deep-sea species in ecuadorian oceanic waters |
publishDate |
2024 |
url |
https://dialnet.unirioja.es/servlet/oaiart?codigo=9396482 |
genre |
Patagonian Toothfish |
genre_facet |
Patagonian Toothfish |
op_source |
Marine & Fishery Sciences (MAFIS), ISSN 2683-7595, Vol. 37, Nº. 2, 2024 (Ejemplar dedicado a: Marine and Fishery Sciences (MAFIS) - Forthcoming Issue)358 pags. |
op_relation |
https://dialnet.unirioja.es/servlet/oaiart?codigo=9396482 (Revista) ISSN 2683-7951 (Revista) ISSN 2683-7595 |
op_rights |
LICENCIA DE USO: Los documentos a texto completo incluidos en Dialnet son de acceso libre y propiedad de sus autores y/o editores. Por tanto, cualquier acto de reproducción, distribución, comunicación pública y/o transformación total o parcial requiere el consentimiento expreso y escrito de aquéllos. Cualquier enlace al texto completo de estos documentos deberá hacerse a través de la URL oficial de éstos en Dialnet. Más información: https://dialnet.unirioja.es/info/derechosOAI | INTELLECTUAL PROPERTY RIGHTS STATEMENT: Full text documents hosted by Dialnet are protected by copyright and/or related rights. This digital object is accessible without charge, but its use is subject to the licensing conditions set by its authors or editors. Unless expressly stated otherwise in the licensing conditions, you are free to linking, browsing, printing and making a copy for your own personal purposes. All other acts of reproduction and communication to the public are subject to the licensing conditions expressed by editors and authors and require consent from them. Any link to this document should be made using its official URL in Dialnet. More info: https://dialnet.unirioja.es/info/derechosOAI |
_version_ |
1797567511565172736 |
spelling |
ftdialnet:oai:dialnet.unirioja.es:ART0001663258 2024-04-28T08:35:24+00:00 Modal and empirical lengths at sexual maturity for six deep-sea species in Ecuadorian oceanic waters Zambrano, Rene Coello Salazar, Dialhy María Herrera, Marco 2024 application/pdf https://dialnet.unirioja.es/servlet/oaiart?codigo=9396482 eng eng https://dialnet.unirioja.es/servlet/oaiart?codigo=9396482 (Revista) ISSN 2683-7951 (Revista) ISSN 2683-7595 LICENCIA DE USO: Los documentos a texto completo incluidos en Dialnet son de acceso libre y propiedad de sus autores y/o editores. Por tanto, cualquier acto de reproducción, distribución, comunicación pública y/o transformación total o parcial requiere el consentimiento expreso y escrito de aquéllos. Cualquier enlace al texto completo de estos documentos deberá hacerse a través de la URL oficial de éstos en Dialnet. Más información: https://dialnet.unirioja.es/info/derechosOAI | INTELLECTUAL PROPERTY RIGHTS STATEMENT: Full text documents hosted by Dialnet are protected by copyright and/or related rights. This digital object is accessible without charge, but its use is subject to the licensing conditions set by its authors or editors. Unless expressly stated otherwise in the licensing conditions, you are free to linking, browsing, printing and making a copy for your own personal purposes. All other acts of reproduction and communication to the public are subject to the licensing conditions expressed by editors and authors and require consent from them. Any link to this document should be made using its official URL in Dialnet. More info: https://dialnet.unirioja.es/info/derechosOAI Marine & Fishery Sciences (MAFIS), ISSN 2683-7595, Vol. 37, Nº. 2, 2024 (Ejemplar dedicado a: Marine and Fishery Sciences (MAFIS) - Forthcoming Issue)358 pags. Dissostichus eleginoides experimental fishery kernel density longline mature individuals pesquería experimental densidad de núcleo palangre individuos maduros text (article) 2024 ftdialnet 2024-04-03T14:44:14Z The objective of the present work was to establish modal lengths, empirical lengths at sexual maturity, and proportions of mature individuals of six deep-sea species from the bycatch of the experimental fishery for Patagonian toothfish (Dissostichus eleginoides). Fishing was conducted in Ecuadorian oceanic waters by only one vessel, between 2017 and 2021. Modal lengths were identified using frequency distributions. The length at sexual maturity (Lm) was estimated using the empirical equation: Ln Lm = -0.1189 + 0.9157 * Ln (Lmax). Modal lengths presented a little annual increment in Antimora rostrata and Coryphaenoides armatus while the values decreased for Centroscymnus owstonii, C. delsolari, and Hydrolagus melanophasma. Interannual lengths were similar for Etmopterus granulosus. Modal lengths were higher than the sexual maturity length for H. melanophasma, C. delsolari, C. owstonii and A. rostrata. Furthermore, Coryphaenoides armatus showed a similar value and E. granulosus a lower modal length. Empirical length at sexual maturity was between 56.35 and 66.26 cm TL for all species except for H. melanophasma, which was 100.53 cm TL. Antimora rostrata and C. armatus presented an increment of mature individuals while the annual percentage decreased for H. melanophasma, C. owstonii, and C. delsolari. Etmopterus granulosus showed a lower proportion of mature individuals. El objetivo del presente trabajo fue establecer tallas modales, tallas empíricas de madurez sexual y proporciones de individuos maduros de seis especies de aguas profundas provenientes de la captura incidental de la pesquería experimental de merluza negra (Dissostichus eleginoides). La pesca fue realizada en aguas oceánicas ecuatorianas por un solo barco entre 2017 y 2021. Las tallas modales se identificaron mediante distribuciones de frecuencia. La talla de madurez sexual (Lm) se estimó mediante la ecuación empírica Ln Lm = -0,1189 + 0,9157 * Ln (Lmax). Las tallas modales presentaron un pequeño incremento anual en Antimora rostrata y ... Article in Journal/Newspaper Patagonian Toothfish Dialnet - Portada de revistas (Universidad de La Rioja) |