VARIABILITY OF HANTZSCHIA AMPHIOXYS (EHR.) GRUN. VAR. RECTA O. MULL.
The 321 individuals of Hantzschia amphioxys were collected from the Ongul Islands of the Antarctic in January, 1959. Microphotographs of them were taken to investigate their variations. Many varieties were found. For example, some had shells with straight ventral and dorsal margins; some with straig...
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National Institute of Polar Research
1963
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fttriple:oai:gotriple.eu:oai:doaj.org/article:c2962aabbbd84803abadb77022e12cdd 2023-05-15T13:48:14+02:00 VARIABILITY OF HANTZSCHIA AMPHIOXYS (EHR.) GRUN. VAR. RECTA O. MULL. Tsuyako KO-BAYASHI 1963-01-01 https://doi.org/10.15094/00007217 https://doaj.org/article/c2962aabbbd84803abadb77022e12cdd en other eng National Institute of Polar Research doi:10.15094/00007217 0085-7289 2432-079X https://doaj.org/article/c2962aabbbd84803abadb77022e12cdd undefined Antarctic Record, Iss 17, Pp 1489-1493 (1963) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 1963 fttriple https://doi.org/10.15094/00007217 2023-01-22T17:20:34Z The 321 individuals of Hantzschia amphioxys were collected from the Ongul Islands of the Antarctic in January, 1959. Microphotographs of them were taken to investigate their variations. Many varieties were found. For example, some had shells with straight ventral and dorsal margins; some with straight ventral margin and convex dorsal margin, or vice versa; some with concave ventral margin and convex dorsal margin. In any case, these varieties were linked with many intermediate forms. Therefore, Hantzschia amphioxys of East Ongul Island should be identified as var. recta. There were some individuals which seemed to have some similarities with forma capitate among the collected materials. Generally, var. capitate is a little smaller than var. recta. The measurement of Hantzschia amphioxys of East Ongul Island is: Length of shell : 60-120μ Width of shell : 8-11μ Number of keels in 10μ : 4-10 Number of striae in 10μ : 18-23 The materials of East Ongul Island were larger in size that the materials recorded in the past; however, the number of their keels and striae were less. The specific name of Hantzschia amphioxys f. capitate 0. Muller (not Pantocsek) was corrected to Hantzschia amphioxys var. amphioxys f. mulleri. Article in Journal/Newspaper Antarc* Antarctic East Ongul Island Ongul Island Unknown Antarctic East Ongul Island ENVELOPE(39.583,39.583,-69.017,-69.017) Mull ENVELOPE(-63.058,-63.058,-74.536,-74.536) Ongul ENVELOPE(39.533,39.533,-69.017,-69.017) Ongul Island ENVELOPE(39.533,39.533,-69.017,-69.017) Recta ENVELOPE(-60.515,-60.515,-62.932,-62.932) The Antarctic |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir Tsuyako KO-BAYASHI VARIABILITY OF HANTZSCHIA AMPHIOXYS (EHR.) GRUN. VAR. RECTA O. MULL. |
topic_facet |
geo envir |
description |
The 321 individuals of Hantzschia amphioxys were collected from the Ongul Islands of the Antarctic in January, 1959. Microphotographs of them were taken to investigate their variations. Many varieties were found. For example, some had shells with straight ventral and dorsal margins; some with straight ventral margin and convex dorsal margin, or vice versa; some with concave ventral margin and convex dorsal margin. In any case, these varieties were linked with many intermediate forms. Therefore, Hantzschia amphioxys of East Ongul Island should be identified as var. recta. There were some individuals which seemed to have some similarities with forma capitate among the collected materials. Generally, var. capitate is a little smaller than var. recta. The measurement of Hantzschia amphioxys of East Ongul Island is: Length of shell : 60-120μ Width of shell : 8-11μ Number of keels in 10μ : 4-10 Number of striae in 10μ : 18-23 The materials of East Ongul Island were larger in size that the materials recorded in the past; however, the number of their keels and striae were less. The specific name of Hantzschia amphioxys f. capitate 0. Muller (not Pantocsek) was corrected to Hantzschia amphioxys var. amphioxys f. mulleri. |
format |
Article in Journal/Newspaper |
author |
Tsuyako KO-BAYASHI |
author_facet |
Tsuyako KO-BAYASHI |
author_sort |
Tsuyako KO-BAYASHI |
title |
VARIABILITY OF HANTZSCHIA AMPHIOXYS (EHR.) GRUN. VAR. RECTA O. MULL. |
title_short |
VARIABILITY OF HANTZSCHIA AMPHIOXYS (EHR.) GRUN. VAR. RECTA O. MULL. |
title_full |
VARIABILITY OF HANTZSCHIA AMPHIOXYS (EHR.) GRUN. VAR. RECTA O. MULL. |
title_fullStr |
VARIABILITY OF HANTZSCHIA AMPHIOXYS (EHR.) GRUN. VAR. RECTA O. MULL. |
title_full_unstemmed |
VARIABILITY OF HANTZSCHIA AMPHIOXYS (EHR.) GRUN. VAR. RECTA O. MULL. |
title_sort |
variability of hantzschia amphioxys (ehr.) grun. var. recta o. mull. |
publisher |
National Institute of Polar Research |
publishDate |
1963 |
url |
https://doi.org/10.15094/00007217 https://doaj.org/article/c2962aabbbd84803abadb77022e12cdd |
long_lat |
ENVELOPE(39.583,39.583,-69.017,-69.017) ENVELOPE(-63.058,-63.058,-74.536,-74.536) ENVELOPE(39.533,39.533,-69.017,-69.017) ENVELOPE(39.533,39.533,-69.017,-69.017) ENVELOPE(-60.515,-60.515,-62.932,-62.932) |
geographic |
Antarctic East Ongul Island Mull Ongul Ongul Island Recta The Antarctic |
geographic_facet |
Antarctic East Ongul Island Mull Ongul Ongul Island Recta The Antarctic |
genre |
Antarc* Antarctic East Ongul Island Ongul Island |
genre_facet |
Antarc* Antarctic East Ongul Island Ongul Island |
op_source |
Antarctic Record, Iss 17, Pp 1489-1493 (1963) |
op_relation |
doi:10.15094/00007217 0085-7289 2432-079X https://doaj.org/article/c2962aabbbd84803abadb77022e12cdd |
op_rights |
undefined |
op_doi |
https://doi.org/10.15094/00007217 |
_version_ |
1766249023309611008 |