Reproductive traits and age of barbeled plunderfishes from the Weddell Sea
Abstract The 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 sou...
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crcambridgeupr:10.1017/s0954102020000140 2024-03-03T08:39:25+00:00 Reproductive traits and age of barbeled plunderfishes from the Weddell Sea La Mesa, Mario Donato, Fortunata Riginella, Emilio Papetti, Chiara Parker, Elyse Near, Thomas J. 2020 http://dx.doi.org/10.1017/s0954102020000140 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102020000140 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Antarctic Science volume 32, issue 4, page 239-247 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2020 crcambridgeupr https://doi.org/10.1017/s0954102020000140 2024-02-08T08:30:45Z Abstract The 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 Antarctic Science Southern Ocean Weddell Sea Cambridge University Press Southern Ocean Weddell Sea Weddell Antarctic Science 32 4 239 247 |
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Open Polar |
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Cambridge University Press |
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English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
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Geology Ecology, Evolution, Behavior and Systematics Oceanography La Mesa, Mario Donato, Fortunata Riginella, Emilio Papetti, Chiara Parker, Elyse Near, Thomas J. Reproductive traits and age of barbeled plunderfishes from the Weddell Sea |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract The 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 |
La Mesa, Mario Donato, Fortunata Riginella, Emilio Papetti, Chiara Parker, Elyse Near, Thomas J. |
author_facet |
La Mesa, Mario Donato, Fortunata Riginella, Emilio Papetti, Chiara Parker, Elyse Near, Thomas J. |
author_sort |
La Mesa, Mario |
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 |
publisher |
Cambridge University Press (CUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1017/s0954102020000140 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102020000140 |
geographic |
Southern Ocean Weddell Sea Weddell |
geographic_facet |
Southern Ocean Weddell Sea Weddell |
genre |
Antarctic Science Southern Ocean Weddell Sea |
genre_facet |
Antarctic Science Southern Ocean Weddell Sea |
op_source |
Antarctic Science volume 32, issue 4, page 239-247 ISSN 0954-1020 1365-2079 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/s0954102020000140 |
container_title |
Antarctic Science |
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32 |
container_issue |
4 |
container_start_page |
239 |
op_container_end_page |
247 |
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1792494936973639680 |