Nothria and Anchinothria (Annelida: Onuphidae) from eastern Australian waters, with a discussion of ontogenetic variation of diagnostic characters
Nothria and Anchinothria , two sister genera of onuphid worms were studied from eastern Australian waters. Nothria abyssia , with a wide distribution in Pacific and Antarctic waters is reported from slope depths south-east of Australia, while N . otsuchiensis , described from Japanese waters, was fo...
Published in: | Journal of the Marine Biological Association of the United Kingdom |
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Language: | English |
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Cambridge University Press (CUP)
2013
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Online Access: | http://dx.doi.org/10.1017/s0025315412001956 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315412001956 |
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crcambridgeupr:10.1017/s0025315412001956 2024-04-07T07:47:21+00:00 Nothria and Anchinothria (Annelida: Onuphidae) from eastern Australian waters, with a discussion of ontogenetic variation of diagnostic characters Budaeva, Nataliya Paxton, Hannelore 2013 http://dx.doi.org/10.1017/s0025315412001956 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315412001956 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 93, issue 6, page 1481-1502 ISSN 0025-3154 1469-7769 Aquatic Science journal-article 2013 crcambridgeupr https://doi.org/10.1017/s0025315412001956 2024-03-08T00:34:04Z Nothria and Anchinothria , two sister genera of onuphid worms were studied from eastern Australian waters. Nothria abyssia , with a wide distribution in Pacific and Antarctic waters is reported from slope depths south-east of Australia, while N . otsuchiensis , described from Japanese waters, was found along the eastern coast of Australia from shallow subtidal to deep slope areas. Anchinothria parvula sp. nov. is described, based on the presence of uni- and bidentate pseudocompound falcigers in the first three pairs of parapodia, absence of branchiae and appearance of limbate chaetae from chaetiger 2, subacicular hooks from chaetigers 6–8 and pectinate chaetae from chaetiger 14. The new species represents the first record of the genus in Australian waters. Ontogenetic variation of chaetal composition and morphology of parapodia was estimated in two Nothria species examined. Three size-related morphotypes with different chaetal composition and morphology of anterior falcigers were revealed in N. abyssia and N. otsuchiensis . The number of chaetigers with pseudocompound falcigers is the only character independent of size of the specimens in both examined species. Distribution of subacicular hooks and postchaetal lobes is shown to be size-dependent. The following characters are considered of diagnostic value only when scored in adults: presence/absence of simple falcigers in anterior parapodia; chaetiger of origin of limbate chaetae, pectinate chaetae, and subacicular hooks; and number of chaetigers with auricular prechaetal lobes and digitiform postchaetal lobes. The use of adult specimens with the final set of definitive morphological structures for diagnoses of Nothria species is suggested. Article in Journal/Newspaper Antarc* Antarctic Cambridge University Press Antarctic Pacific Journal of the Marine Biological Association of the United Kingdom 93 6 1481 1502 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science Budaeva, Nataliya Paxton, Hannelore Nothria and Anchinothria (Annelida: Onuphidae) from eastern Australian waters, with a discussion of ontogenetic variation of diagnostic characters |
topic_facet |
Aquatic Science |
description |
Nothria and Anchinothria , two sister genera of onuphid worms were studied from eastern Australian waters. Nothria abyssia , with a wide distribution in Pacific and Antarctic waters is reported from slope depths south-east of Australia, while N . otsuchiensis , described from Japanese waters, was found along the eastern coast of Australia from shallow subtidal to deep slope areas. Anchinothria parvula sp. nov. is described, based on the presence of uni- and bidentate pseudocompound falcigers in the first three pairs of parapodia, absence of branchiae and appearance of limbate chaetae from chaetiger 2, subacicular hooks from chaetigers 6–8 and pectinate chaetae from chaetiger 14. The new species represents the first record of the genus in Australian waters. Ontogenetic variation of chaetal composition and morphology of parapodia was estimated in two Nothria species examined. Three size-related morphotypes with different chaetal composition and morphology of anterior falcigers were revealed in N. abyssia and N. otsuchiensis . The number of chaetigers with pseudocompound falcigers is the only character independent of size of the specimens in both examined species. Distribution of subacicular hooks and postchaetal lobes is shown to be size-dependent. The following characters are considered of diagnostic value only when scored in adults: presence/absence of simple falcigers in anterior parapodia; chaetiger of origin of limbate chaetae, pectinate chaetae, and subacicular hooks; and number of chaetigers with auricular prechaetal lobes and digitiform postchaetal lobes. The use of adult specimens with the final set of definitive morphological structures for diagnoses of Nothria species is suggested. |
format |
Article in Journal/Newspaper |
author |
Budaeva, Nataliya Paxton, Hannelore |
author_facet |
Budaeva, Nataliya Paxton, Hannelore |
author_sort |
Budaeva, Nataliya |
title |
Nothria and Anchinothria (Annelida: Onuphidae) from eastern Australian waters, with a discussion of ontogenetic variation of diagnostic characters |
title_short |
Nothria and Anchinothria (Annelida: Onuphidae) from eastern Australian waters, with a discussion of ontogenetic variation of diagnostic characters |
title_full |
Nothria and Anchinothria (Annelida: Onuphidae) from eastern Australian waters, with a discussion of ontogenetic variation of diagnostic characters |
title_fullStr |
Nothria and Anchinothria (Annelida: Onuphidae) from eastern Australian waters, with a discussion of ontogenetic variation of diagnostic characters |
title_full_unstemmed |
Nothria and Anchinothria (Annelida: Onuphidae) from eastern Australian waters, with a discussion of ontogenetic variation of diagnostic characters |
title_sort |
nothria and anchinothria (annelida: onuphidae) from eastern australian waters, with a discussion of ontogenetic variation of diagnostic characters |
publisher |
Cambridge University Press (CUP) |
publishDate |
2013 |
url |
http://dx.doi.org/10.1017/s0025315412001956 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315412001956 |
geographic |
Antarctic Pacific |
geographic_facet |
Antarctic Pacific |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 93, issue 6, page 1481-1502 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0025315412001956 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
93 |
container_issue |
6 |
container_start_page |
1481 |
op_container_end_page |
1502 |
_version_ |
1795674198478159872 |