Aspects of mast building and the fine structure of “amphipod silk” glands in Dyopedos bispinis (Amphipoda, Dulichiidae)
In the present study, we investigated the biology of Dyopedos bispinis, a mast-building amphipod that is abundant near the N. Pertsov White Sea Biological Station. To examine the peculiarities of mast building in Dyopedos bispinis, we studied the social structure of individuals inhabiting the masts...
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ftnaturalis:oai:naturalis:637725 2023-05-15T18:43:56+02:00 Aspects of mast building and the fine structure of “amphipod silk” glands in Dyopedos bispinis (Amphipoda, Dulichiidae) Neretin, N.Y. Zhadan, A.E. Tzetlin, A.B. 2017 application/pdf http://www.repository.naturalis.nl/record/637725 http://www.repository.naturalis.nl/document/653116 unknown http://www.repository.naturalis.nl/record/637725 http://www.repository.naturalis.nl/document/653116 (c) Naturalis Contributions to Zoology (1383-4517) vol.86 (2017) nr.2 p.145 amphipod masts amphipod silk amphipod whips Dulichiidae Dyopedos bispinis extended parental care mast building pereopods 3-4 tegumental glands Article / Letter to the editor 2017 ftnaturalis 2022-09-01T06:15:07Z In the present study, we investigated the biology of Dyopedos bispinis, a mast-building amphipod that is abundant near the N. Pertsov White Sea Biological Station. To examine the peculiarities of mast building in Dyopedos bispinis, we studied the social structure of individuals inhabiting the masts and identified the preferred substrata through underwater photography and direct observations, characterized the internal and external structures of the masts, and studied the ultrastructure of pereopodal silk glands using scanning and transmission electron microscopy (SEM and TEM, respectively). The most frequent substrata for mast building are other fouling organisms, including hydroids, bryozoans, ascidians and sponges. As in other corophiids, each Dyopedos bispinis mast represents the territory of one female and, occasionally, one male, but unique collective masts occupied by three or more (up to 23) adults were also observed. Masts comprise one or 2-4 central cylinders and a laminated cortex that contains detritus and amphipod silk layers. The pereopodal glandular complex of Dyopedos bispinis is composed of two distinct gland groups, proximal and distal, in each pereopod 3-4, and ducts in the glandular complex lead into a common chamber in the dactylus. The proximal glands are multicellular; their secretory cells are uninuclear, unlike in certain other amphipods; and the cell membrane is deeply invaginated. The invaginations are filled with extensions of the cytoplasm of lining cells, but the origin of the lining is unclear. Axon terminals were observed adjacent to the secretory cells, and it is assumed that these axons regulate amphipod silk glands. The proximal silk glands of Dyopedos bispinis have similarities with the lobed and rosette glands of isopods, but they have strongly elongated forms. We refer to these glands as pseudotubular glands. Such glands are rarely observed in Crustacea and have only been described in silk-producing pereopodal systems of marine Peracarida and in the antenna of terrestrial ... Article in Journal/Newspaper White Sea Naturalis Digital Academic Repository (National Museum of Natural History in the Netherlands) White Sea |
institution |
Open Polar |
collection |
Naturalis Digital Academic Repository (National Museum of Natural History in the Netherlands) |
op_collection_id |
ftnaturalis |
language |
unknown |
topic |
amphipod masts amphipod silk amphipod whips Dulichiidae Dyopedos bispinis extended parental care mast building pereopods 3-4 tegumental glands |
spellingShingle |
amphipod masts amphipod silk amphipod whips Dulichiidae Dyopedos bispinis extended parental care mast building pereopods 3-4 tegumental glands Neretin, N.Y. Zhadan, A.E. Tzetlin, A.B. Aspects of mast building and the fine structure of “amphipod silk” glands in Dyopedos bispinis (Amphipoda, Dulichiidae) |
topic_facet |
amphipod masts amphipod silk amphipod whips Dulichiidae Dyopedos bispinis extended parental care mast building pereopods 3-4 tegumental glands |
description |
In the present study, we investigated the biology of Dyopedos bispinis, a mast-building amphipod that is abundant near the N. Pertsov White Sea Biological Station. To examine the peculiarities of mast building in Dyopedos bispinis, we studied the social structure of individuals inhabiting the masts and identified the preferred substrata through underwater photography and direct observations, characterized the internal and external structures of the masts, and studied the ultrastructure of pereopodal silk glands using scanning and transmission electron microscopy (SEM and TEM, respectively). The most frequent substrata for mast building are other fouling organisms, including hydroids, bryozoans, ascidians and sponges. As in other corophiids, each Dyopedos bispinis mast represents the territory of one female and, occasionally, one male, but unique collective masts occupied by three or more (up to 23) adults were also observed. Masts comprise one or 2-4 central cylinders and a laminated cortex that contains detritus and amphipod silk layers. The pereopodal glandular complex of Dyopedos bispinis is composed of two distinct gland groups, proximal and distal, in each pereopod 3-4, and ducts in the glandular complex lead into a common chamber in the dactylus. The proximal glands are multicellular; their secretory cells are uninuclear, unlike in certain other amphipods; and the cell membrane is deeply invaginated. The invaginations are filled with extensions of the cytoplasm of lining cells, but the origin of the lining is unclear. Axon terminals were observed adjacent to the secretory cells, and it is assumed that these axons regulate amphipod silk glands. The proximal silk glands of Dyopedos bispinis have similarities with the lobed and rosette glands of isopods, but they have strongly elongated forms. We refer to these glands as pseudotubular glands. Such glands are rarely observed in Crustacea and have only been described in silk-producing pereopodal systems of marine Peracarida and in the antenna of terrestrial ... |
format |
Article in Journal/Newspaper |
author |
Neretin, N.Y. Zhadan, A.E. Tzetlin, A.B. |
author_facet |
Neretin, N.Y. Zhadan, A.E. Tzetlin, A.B. |
author_sort |
Neretin, N.Y. |
title |
Aspects of mast building and the fine structure of “amphipod silk” glands in Dyopedos bispinis (Amphipoda, Dulichiidae) |
title_short |
Aspects of mast building and the fine structure of “amphipod silk” glands in Dyopedos bispinis (Amphipoda, Dulichiidae) |
title_full |
Aspects of mast building and the fine structure of “amphipod silk” glands in Dyopedos bispinis (Amphipoda, Dulichiidae) |
title_fullStr |
Aspects of mast building and the fine structure of “amphipod silk” glands in Dyopedos bispinis (Amphipoda, Dulichiidae) |
title_full_unstemmed |
Aspects of mast building and the fine structure of “amphipod silk” glands in Dyopedos bispinis (Amphipoda, Dulichiidae) |
title_sort |
aspects of mast building and the fine structure of “amphipod silk” glands in dyopedos bispinis (amphipoda, dulichiidae) |
publishDate |
2017 |
url |
http://www.repository.naturalis.nl/record/637725 http://www.repository.naturalis.nl/document/653116 |
geographic |
White Sea |
geographic_facet |
White Sea |
genre |
White Sea |
genre_facet |
White Sea |
op_source |
Contributions to Zoology (1383-4517) vol.86 (2017) nr.2 p.145 |
op_relation |
http://www.repository.naturalis.nl/record/637725 http://www.repository.naturalis.nl/document/653116 |
op_rights |
(c) Naturalis |
_version_ |
1766234468122624000 |