Reproductive traits and age of barbeled plunderfishes from the Weddell Sea
AbstractThe genus Pogonophryne is the most species-rich genus of barbeled plunderfishes (Artedidraconidae) and includes more than 25 poorly known species endemic to the Southern Ocean. In this study, we provide new data on the age and reproductive traits of some species of Pogonophryne from the sout...
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Online Access: | https://www.openaccessrepository.it/record/90963 https://doi.org/10.1017/s0954102020000140 |
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ftopenaccessrep:oai:zenodo.org:90963 2023-10-25T01:44:03+02:00 Reproductive traits and age of barbeled plunderfishes from the Weddell Sea Thomas J. Near Fortunata Donato Chiara Papetti Elyse Parker Mario La Mesa Emilio Riginella 2020-03-02 https://www.openaccessrepository.it/record/90963 https://doi.org/10.1017/s0954102020000140 eng eng url:https://www.openaccessrepository.it/communities/itmirror https://www.openaccessrepository.it/record/90963 doi:10.1017/s0954102020000140 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ NEANIAS Atmospheric Research Community Geology Ecology Evolution Behavior and Systematics Oceanography info:eu-repo/semantics/article publication-article 2020 ftopenaccessrep https://doi.org/10.1017/s0954102020000140 2023-09-26T22:20:23Z AbstractThe genus Pogonophryne is the most species-rich genus of barbeled plunderfishes (Artedidraconidae) and includes more than 25 poorly known species endemic to the Southern Ocean. In this study, we provide new data on the age and reproductive traits of some species of Pogonophryne from the southern Weddell Sea, inferred through otolith reading and histological analyses of gonads. Individual age estimates ranged between 16 and 18 years for Pogonophryne barsukovi and Pogonophryne immaculata and between 10 and 22 years for Pogonophryne scotti. As is commonly found in notothenioids, P. barsukovi followed a group-synchronous type of ovarian development, with pre-vitellogenic and vitellogenic oocytes forming two well-separated egg-size groups. A single spawning female in the sample produced ~1097 eggs and 7.9 eggs g-1. The sample of P. immaculata consisted exclusively of developing males, with testes composed of cysts of spermatogonia, spermatocytes and spermatids. Pogonophryne scotti was the most abundant species, including relatively small males at immature or developing stages of gonad development. Larger females were regressing, being characterized by ovaries with postovulatory follicles and atretic oocytes. Based on the macroscopic and histological analyses of gonads, the spawning season would take place in autumn for P. barsukovi and P. immaculata and in spring–early summer for P. scotti. Article in Journal/Newspaper Southern Ocean Weddell Sea Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository Southern Ocean Weddell Weddell Sea Antarctic Science 32 4 239 247 |
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Open Polar |
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Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository |
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ftopenaccessrep |
language |
English |
topic |
NEANIAS Atmospheric Research Community Geology Ecology Evolution Behavior and Systematics Oceanography |
spellingShingle |
NEANIAS Atmospheric Research Community Geology Ecology Evolution Behavior and Systematics Oceanography Thomas J. Near Fortunata Donato Chiara Papetti Elyse Parker Mario La Mesa Emilio Riginella Reproductive traits and age of barbeled plunderfishes from the Weddell Sea |
topic_facet |
NEANIAS Atmospheric Research Community Geology Ecology Evolution Behavior and Systematics Oceanography |
description |
AbstractThe genus Pogonophryne is the most species-rich genus of barbeled plunderfishes (Artedidraconidae) and includes more than 25 poorly known species endemic to the Southern Ocean. In this study, we provide new data on the age and reproductive traits of some species of Pogonophryne from the southern Weddell Sea, inferred through otolith reading and histological analyses of gonads. Individual age estimates ranged between 16 and 18 years for Pogonophryne barsukovi and Pogonophryne immaculata and between 10 and 22 years for Pogonophryne scotti. As is commonly found in notothenioids, P. barsukovi followed a group-synchronous type of ovarian development, with pre-vitellogenic and vitellogenic oocytes forming two well-separated egg-size groups. A single spawning female in the sample produced ~1097 eggs and 7.9 eggs g-1. The sample of P. immaculata consisted exclusively of developing males, with testes composed of cysts of spermatogonia, spermatocytes and spermatids. Pogonophryne scotti was the most abundant species, including relatively small males at immature or developing stages of gonad development. Larger females were regressing, being characterized by ovaries with postovulatory follicles and atretic oocytes. Based on the macroscopic and histological analyses of gonads, the spawning season would take place in autumn for P. barsukovi and P. immaculata and in spring–early summer for P. scotti. |
format |
Article in Journal/Newspaper |
author |
Thomas J. Near Fortunata Donato Chiara Papetti Elyse Parker Mario La Mesa Emilio Riginella |
author_facet |
Thomas J. Near Fortunata Donato Chiara Papetti Elyse Parker Mario La Mesa Emilio Riginella |
author_sort |
Thomas J. Near |
title |
Reproductive traits and age of barbeled plunderfishes from the Weddell Sea |
title_short |
Reproductive traits and age of barbeled plunderfishes from the Weddell Sea |
title_full |
Reproductive traits and age of barbeled plunderfishes from the Weddell Sea |
title_fullStr |
Reproductive traits and age of barbeled plunderfishes from the Weddell Sea |
title_full_unstemmed |
Reproductive traits and age of barbeled plunderfishes from the Weddell Sea |
title_sort |
reproductive traits and age of barbeled plunderfishes from the weddell sea |
publishDate |
2020 |
url |
https://www.openaccessrepository.it/record/90963 https://doi.org/10.1017/s0954102020000140 |
geographic |
Southern Ocean Weddell Weddell Sea |
geographic_facet |
Southern Ocean Weddell Weddell Sea |
genre |
Southern Ocean Weddell Sea |
genre_facet |
Southern Ocean Weddell Sea |
op_relation |
url:https://www.openaccessrepository.it/communities/itmirror https://www.openaccessrepository.it/record/90963 doi:10.1017/s0954102020000140 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/s0954102020000140 |
container_title |
Antarctic Science |
container_volume |
32 |
container_issue |
4 |
container_start_page |
239 |
op_container_end_page |
247 |
_version_ |
1780741359688220672 |