Molgula tzetlini Sanamyan 1993
Molgula tzetlini Sanamyan, 1993 (Figure 6) Molgula tzetlini Sanamyan, 1993: 129. Material examined: Four specimens collected during July and August 1995 on Medny Island (Commander Islands), 8–20 m, KBPIG 700 / 3, 723/5, 725/6, 741/7; Kamchatka, Avacha Bay, 5 m, one specimen, KBPIG 1066 /8. Previous...
Main Authors: | , |
---|---|
Format: | Other/Unknown Material |
Language: | unknown |
Published: |
Zenodo
2007
|
Subjects: | |
Online Access: | https://doi.org/10.5281/zenodo.5098331 http://treatment.plazi.org/id/03B987E8FFDEFFD3E7B6CF6C66AAD46A |
id |
ftzenodo:oai:zenodo.org:5098331 |
---|---|
record_format |
openpolar |
spelling |
ftzenodo:oai:zenodo.org:5098331 2024-09-15T18:16:03+00:00 Molgula tzetlini Sanamyan 1993 Sanamyan, Karen Sanamyan, Nadya 2007-09-10 https://doi.org/10.5281/zenodo.5098331 http://treatment.plazi.org/id/03B987E8FFDEFFD3E7B6CF6C66AAD46A unknown Zenodo https://doi.org/10.11646/zootaxa.1579.1.3 http://zenodo.org/record/5097273 http://publication.plazi.org/id/FF80FF90FFD5FFDEE721CD4B6403D568 https://sibils.text-analytics.ch/search/collections/plazi/03B987E8FFDEFFD3E7B6CF6C66AAD46A https://doi.org/10.5281/zenodo.5097291 http://zoobank.org/9DA6758A-01F9-4E81-BB7E-A1152F2658E5 https://zenodo.org/communities/biosyslit https://doi.org/10.5281/zenodo.5098330 https://doi.org/10.5281/zenodo.5098331 oai:zenodo.org:5098331 http://treatment.plazi.org/id/03B987E8FFDEFFD3E7B6CF6C66AAD46A info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode Poorly known Ascidiacea collected in the vicinity of the Commander Islands and East Kamchatka, NW Pacific, pp. 55-68 in Zootaxa, 1579(1), 66-68, (2007-09-10) Biodiversity Taxonomy Animalia Chordata Ascidiacea Pleurogona Molgulidae Molgula Molgula tzetlini info:eu-repo/semantics/other 2007 ftzenodo https://doi.org/10.5281/zenodo.509833110.11646/zootaxa.1579.1.310.5281/zenodo.509729110.5281/zenodo.5098330 2024-07-26T13:41:37Z Molgula tzetlini Sanamyan, 1993 (Figure 6) Molgula tzetlini Sanamyan, 1993: 129. Material examined: Four specimens collected during July and August 1995 on Medny Island (Commander Islands), 8–20 m, KBPIG 700 / 3, 723/5, 725/6, 741/7; Kamchatka, Avacha Bay, 5 m, one specimen, KBPIG 1066 /8. Previous records: NW Pacific, Commander Islands (Sanamyan, 1993). Description. All specimens are small, 5.5–11 mm in diameter and heavily incrusted with sand. Sand grains are attached directly to the test and hair-like processes are not present. The shape of the body removed from the test is characteristic (Fig. 6B). Both siphons are long and muscular and have well marked pointed lobules fringing the rim of the apertures. Body muscles are present only on the anterior half of the body and consist of 1) crowded thick circular siphonal muscles present only on the siphons and not extending outside the bases of the siphons; 2) spaced thick muscle bands radiating from siphons to about the middle of the body; 3) compact field of short muscle fibers crossing the intersiphonal area and completely covering the region of neural ganglion and dorsal tubercle; 4) rows of short transverse muscles running along mid-ventral and middorsal lines in the anterior half of the body. The branchial sac has a regular structure of seven longitudinal rows of 12 (in the most ventral row) or six (in all other rows) square spirals separated by five transverse vessels. There are seven branchial folds, all except the most ventral one being well developed with 4–6 internal longitudinal vessels. The most ventral fold is represented by only one longitudinal vessel in all the specimens. The typical formula is: (1)(5)(5)(6)(6)(6)(6)DL(5)(6)(5)(6)(4)(4)(1). Longitudinal vessels are not present between the folds or, rarely, a single vessel is between the dorsal lamina and adjacent fold on the right side of the branchial sac. Radial and rather irregular parastigmatic vessels are present and bear minute papillae (recognizable only after staining). The dorsal lamina ... Other/Unknown Material Kamchatka Zenodo |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Chordata Ascidiacea Pleurogona Molgulidae Molgula Molgula tzetlini |
spellingShingle |
Biodiversity Taxonomy Animalia Chordata Ascidiacea Pleurogona Molgulidae Molgula Molgula tzetlini Sanamyan, Karen Sanamyan, Nadya Molgula tzetlini Sanamyan 1993 |
topic_facet |
Biodiversity Taxonomy Animalia Chordata Ascidiacea Pleurogona Molgulidae Molgula Molgula tzetlini |
description |
Molgula tzetlini Sanamyan, 1993 (Figure 6) Molgula tzetlini Sanamyan, 1993: 129. Material examined: Four specimens collected during July and August 1995 on Medny Island (Commander Islands), 8–20 m, KBPIG 700 / 3, 723/5, 725/6, 741/7; Kamchatka, Avacha Bay, 5 m, one specimen, KBPIG 1066 /8. Previous records: NW Pacific, Commander Islands (Sanamyan, 1993). Description. All specimens are small, 5.5–11 mm in diameter and heavily incrusted with sand. Sand grains are attached directly to the test and hair-like processes are not present. The shape of the body removed from the test is characteristic (Fig. 6B). Both siphons are long and muscular and have well marked pointed lobules fringing the rim of the apertures. Body muscles are present only on the anterior half of the body and consist of 1) crowded thick circular siphonal muscles present only on the siphons and not extending outside the bases of the siphons; 2) spaced thick muscle bands radiating from siphons to about the middle of the body; 3) compact field of short muscle fibers crossing the intersiphonal area and completely covering the region of neural ganglion and dorsal tubercle; 4) rows of short transverse muscles running along mid-ventral and middorsal lines in the anterior half of the body. The branchial sac has a regular structure of seven longitudinal rows of 12 (in the most ventral row) or six (in all other rows) square spirals separated by five transverse vessels. There are seven branchial folds, all except the most ventral one being well developed with 4–6 internal longitudinal vessels. The most ventral fold is represented by only one longitudinal vessel in all the specimens. The typical formula is: (1)(5)(5)(6)(6)(6)(6)DL(5)(6)(5)(6)(4)(4)(1). Longitudinal vessels are not present between the folds or, rarely, a single vessel is between the dorsal lamina and adjacent fold on the right side of the branchial sac. Radial and rather irregular parastigmatic vessels are present and bear minute papillae (recognizable only after staining). The dorsal lamina ... |
format |
Other/Unknown Material |
author |
Sanamyan, Karen Sanamyan, Nadya |
author_facet |
Sanamyan, Karen Sanamyan, Nadya |
author_sort |
Sanamyan, Karen |
title |
Molgula tzetlini Sanamyan 1993 |
title_short |
Molgula tzetlini Sanamyan 1993 |
title_full |
Molgula tzetlini Sanamyan 1993 |
title_fullStr |
Molgula tzetlini Sanamyan 1993 |
title_full_unstemmed |
Molgula tzetlini Sanamyan 1993 |
title_sort |
molgula tzetlini sanamyan 1993 |
publisher |
Zenodo |
publishDate |
2007 |
url |
https://doi.org/10.5281/zenodo.5098331 http://treatment.plazi.org/id/03B987E8FFDEFFD3E7B6CF6C66AAD46A |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
Poorly known Ascidiacea collected in the vicinity of the Commander Islands and East Kamchatka, NW Pacific, pp. 55-68 in Zootaxa, 1579(1), 66-68, (2007-09-10) |
op_relation |
https://doi.org/10.11646/zootaxa.1579.1.3 http://zenodo.org/record/5097273 http://publication.plazi.org/id/FF80FF90FFD5FFDEE721CD4B6403D568 https://sibils.text-analytics.ch/search/collections/plazi/03B987E8FFDEFFD3E7B6CF6C66AAD46A https://doi.org/10.5281/zenodo.5097291 http://zoobank.org/9DA6758A-01F9-4E81-BB7E-A1152F2658E5 https://zenodo.org/communities/biosyslit https://doi.org/10.5281/zenodo.5098330 https://doi.org/10.5281/zenodo.5098331 oai:zenodo.org:5098331 http://treatment.plazi.org/id/03B987E8FFDEFFD3E7B6CF6C66AAD46A |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.509833110.11646/zootaxa.1579.1.310.5281/zenodo.509729110.5281/zenodo.5098330 |
_version_ |
1810454024517844992 |