Embryonic development of cephalopods at low temperatures
No information is available on the embryonic development of Southern Ocean cephalopods. Estimations of developmental times can only be made by extrapolation using data from other geographical areas. Based on known relationships between environmental temperature and embryonic development time, it app...
Published in: | Antarctic Science |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
1994
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0954102094000210 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102094000210 |
id |
crcambridgeupr:10.1017/s0954102094000210 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0954102094000210 2024-09-15T17:49:05+00:00 Embryonic development of cephalopods at low temperatures Boletzky, S.V. 1994 http://dx.doi.org/10.1017/s0954102094000210 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102094000210 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 6, issue 2, page 139-142 ISSN 0954-1020 1365-2079 journal-article 1994 crcambridgeupr https://doi.org/10.1017/s0954102094000210 2024-08-21T04:04:19Z No information is available on the embryonic development of Southern Ocean cephalopods. Estimations of developmental times can only be made by extrapolation using data from other geographical areas. Based on known relationships between environmental temperature and embryonic development time, it appears that below 5°C even the smallest squid eggs measuring 0.6–1.0 mm in diameter need one to two months to develop to hatching. At c. 2°C, the embryonic development of these small eggs would probably cover between three and five months. Very large octopod eggs are known to develop over time spans of at least one year. Protection of the developing embryos either by long-lasting capsules laid at appropriate spawning sites, or by active ‘brooding’ (incirrate octopods) is required for embryonic survival and hatching success. The physiological conditions controlling the onset of hatching at very low temperatures are unknown; postponement of hatching appears to be common in cold waters. Article in Journal/Newspaper Antarctic Science Southern Ocean Cambridge University Press Antarctic Science 6 2 139 142 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
No information is available on the embryonic development of Southern Ocean cephalopods. Estimations of developmental times can only be made by extrapolation using data from other geographical areas. Based on known relationships between environmental temperature and embryonic development time, it appears that below 5°C even the smallest squid eggs measuring 0.6–1.0 mm in diameter need one to two months to develop to hatching. At c. 2°C, the embryonic development of these small eggs would probably cover between three and five months. Very large octopod eggs are known to develop over time spans of at least one year. Protection of the developing embryos either by long-lasting capsules laid at appropriate spawning sites, or by active ‘brooding’ (incirrate octopods) is required for embryonic survival and hatching success. The physiological conditions controlling the onset of hatching at very low temperatures are unknown; postponement of hatching appears to be common in cold waters. |
format |
Article in Journal/Newspaper |
author |
Boletzky, S.V. |
spellingShingle |
Boletzky, S.V. Embryonic development of cephalopods at low temperatures |
author_facet |
Boletzky, S.V. |
author_sort |
Boletzky, S.V. |
title |
Embryonic development of cephalopods at low temperatures |
title_short |
Embryonic development of cephalopods at low temperatures |
title_full |
Embryonic development of cephalopods at low temperatures |
title_fullStr |
Embryonic development of cephalopods at low temperatures |
title_full_unstemmed |
Embryonic development of cephalopods at low temperatures |
title_sort |
embryonic development of cephalopods at low temperatures |
publisher |
Cambridge University Press (CUP) |
publishDate |
1994 |
url |
http://dx.doi.org/10.1017/s0954102094000210 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102094000210 |
genre |
Antarctic Science Southern Ocean |
genre_facet |
Antarctic Science Southern Ocean |
op_source |
Antarctic Science volume 6, issue 2, page 139-142 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102094000210 |
container_title |
Antarctic Science |
container_volume |
6 |
container_issue |
2 |
container_start_page |
139 |
op_container_end_page |
142 |
_version_ |
1810290780747595776 |