First observations of ovary regeneration in an amphipod, Ampelisca eschrichtii Krøyer, 1842
Background Females of the gammaridean amphipod Ampelisca eschrichtii with signs of regenerating, previously atrophied ovaries were recovered from the northeastern shelf of Sakhalin Island (Okhotsk Sea, Russia). Ovarian regeneration was previously unknown for any amphipod species. A. eschrichtii have...
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ftdoajarticles:oai:doaj.org/article:bf76ab604d2b45b698bc6d80f7d090b1 2024-01-07T09:45:47+01:00 First observations of ovary regeneration in an amphipod, Ampelisca eschrichtii Krøyer, 1842 Valentina B. Durkina John W. Chapman Natalia L. Demchenko 2022-03-01T00:00:00Z https://doi.org/10.7717/peerj.12950 https://doaj.org/article/bf76ab604d2b45b698bc6d80f7d090b1 EN eng PeerJ Inc. https://peerj.com/articles/12950.pdf https://peerj.com/articles/12950/ https://doaj.org/toc/2167-8359 doi:10.7717/peerj.12950 2167-8359 https://doaj.org/article/bf76ab604d2b45b698bc6d80f7d090b1 PeerJ, Vol 10, p e12950 (2022) Amphipoda Histology Okhotsk Sea Germ cells Eosinophilic cells Reproduction Medicine R Biology (General) QH301-705.5 article 2022 ftdoajarticles https://doi.org/10.7717/peerj.12950 2023-12-10T01:52:21Z Background Females of the gammaridean amphipod Ampelisca eschrichtii with signs of regenerating, previously atrophied ovaries were recovered from the northeastern shelf of Sakhalin Island (Okhotsk Sea, Russia). Ovarian regeneration was previously unknown for any amphipod species. A. eschrichtii have a predominantly 2-year life cycle (from embryo to adult death) and reproduce once between late winter or early spring at the age of 2 years. Occasionally, females survive to a third year. An adaptive value of extended survival among these females is likely to require that they are also reproductive. Methods Histological sections from a second-year female with ovarian atrophy, a female with normal ovaries, a third-year female with ovarian regeneration, as well as testes of an immature and a sexually mature male were compared to determine the sources of cells of the germinal and somatic lines necessary for ovarian regeneration. Results Ovarian regeneration in the third-year female began with the formation of a new germinal zone from germ cells preserved in the atrophied ovaries and eosinophilic cells of the previously starving second-year female. Eosinophilic cells form the mesodermal component of the germinal zone. A mass of these cells appeared in the second-year female that had atrophied ovaries and in large numbers on the intestine wall of the third-year female with regenerating ovaries. These eosinophilic cells appear to migrate into the regenerating ovaries. Conclusions All germ cells of the second-year female are not lost during ovarian atrophy and can be involved in subsequent ovarian regeneration. Eosinophilic cells involved in ovarian regeneration are of mesodermal origin. The eosinophilic cell morphologies are similar to those of quiescence cells (cells in a reversible state that do not divide but retain the ability to re-enter cell division and participate in regeneration). These histological data thus indicate that eosinophilic and germ cells of third-year females can participate in the regeneration of the ... Article in Journal/Newspaper okhotsk sea Sakhalin Directory of Open Access Journals: DOAJ Articles Okhotsk PeerJ 10 e12950 |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Amphipoda Histology Okhotsk Sea Germ cells Eosinophilic cells Reproduction Medicine R Biology (General) QH301-705.5 |
spellingShingle |
Amphipoda Histology Okhotsk Sea Germ cells Eosinophilic cells Reproduction Medicine R Biology (General) QH301-705.5 Valentina B. Durkina John W. Chapman Natalia L. Demchenko First observations of ovary regeneration in an amphipod, Ampelisca eschrichtii Krøyer, 1842 |
topic_facet |
Amphipoda Histology Okhotsk Sea Germ cells Eosinophilic cells Reproduction Medicine R Biology (General) QH301-705.5 |
description |
Background Females of the gammaridean amphipod Ampelisca eschrichtii with signs of regenerating, previously atrophied ovaries were recovered from the northeastern shelf of Sakhalin Island (Okhotsk Sea, Russia). Ovarian regeneration was previously unknown for any amphipod species. A. eschrichtii have a predominantly 2-year life cycle (from embryo to adult death) and reproduce once between late winter or early spring at the age of 2 years. Occasionally, females survive to a third year. An adaptive value of extended survival among these females is likely to require that they are also reproductive. Methods Histological sections from a second-year female with ovarian atrophy, a female with normal ovaries, a third-year female with ovarian regeneration, as well as testes of an immature and a sexually mature male were compared to determine the sources of cells of the germinal and somatic lines necessary for ovarian regeneration. Results Ovarian regeneration in the third-year female began with the formation of a new germinal zone from germ cells preserved in the atrophied ovaries and eosinophilic cells of the previously starving second-year female. Eosinophilic cells form the mesodermal component of the germinal zone. A mass of these cells appeared in the second-year female that had atrophied ovaries and in large numbers on the intestine wall of the third-year female with regenerating ovaries. These eosinophilic cells appear to migrate into the regenerating ovaries. Conclusions All germ cells of the second-year female are not lost during ovarian atrophy and can be involved in subsequent ovarian regeneration. Eosinophilic cells involved in ovarian regeneration are of mesodermal origin. The eosinophilic cell morphologies are similar to those of quiescence cells (cells in a reversible state that do not divide but retain the ability to re-enter cell division and participate in regeneration). These histological data thus indicate that eosinophilic and germ cells of third-year females can participate in the regeneration of the ... |
format |
Article in Journal/Newspaper |
author |
Valentina B. Durkina John W. Chapman Natalia L. Demchenko |
author_facet |
Valentina B. Durkina John W. Chapman Natalia L. Demchenko |
author_sort |
Valentina B. Durkina |
title |
First observations of ovary regeneration in an amphipod, Ampelisca eschrichtii Krøyer, 1842 |
title_short |
First observations of ovary regeneration in an amphipod, Ampelisca eschrichtii Krøyer, 1842 |
title_full |
First observations of ovary regeneration in an amphipod, Ampelisca eschrichtii Krøyer, 1842 |
title_fullStr |
First observations of ovary regeneration in an amphipod, Ampelisca eschrichtii Krøyer, 1842 |
title_full_unstemmed |
First observations of ovary regeneration in an amphipod, Ampelisca eschrichtii Krøyer, 1842 |
title_sort |
first observations of ovary regeneration in an amphipod, ampelisca eschrichtii krøyer, 1842 |
publisher |
PeerJ Inc. |
publishDate |
2022 |
url |
https://doi.org/10.7717/peerj.12950 https://doaj.org/article/bf76ab604d2b45b698bc6d80f7d090b1 |
geographic |
Okhotsk |
geographic_facet |
Okhotsk |
genre |
okhotsk sea Sakhalin |
genre_facet |
okhotsk sea Sakhalin |
op_source |
PeerJ, Vol 10, p e12950 (2022) |
op_relation |
https://peerj.com/articles/12950.pdf https://peerj.com/articles/12950/ https://doaj.org/toc/2167-8359 doi:10.7717/peerj.12950 2167-8359 https://doaj.org/article/bf76ab604d2b45b698bc6d80f7d090b1 |
op_doi |
https://doi.org/10.7717/peerj.12950 |
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PeerJ |
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10 |
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e12950 |
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