Egg production and hatching success in the peri-Antarctic copepod Calanus simillimus
In situ rates of egg production and hatching success are reported for Calanus simillimus , one of the most abundant calanoid species in peri-Antarctic regions, during the Italian ‘Italics’ cruise in the Straits of Magellan in March-April 1995. Low fecundity (8.6 eggs female−1 day−1) and fecal pellet...
Published in: | Journal of Plankton Research |
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Oxford University Press
1998
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fthighwire:oai:open-archive.highwire.org:plankt:20/12/2369 2023-05-15T13:52:21+02:00 Egg production and hatching success in the peri-Antarctic copepod Calanus simillimus Miralto, A. Ianora, A. Guglielmo, L Zagami, G. Buttino, I. 1998-01-01 00:00:00.0 text/html http://plankt.oxfordjournals.org/cgi/content/short/20/12/2369 https://doi.org/10.1093/plankt/20.12.2369 en eng Oxford University Press http://plankt.oxfordjournals.org/cgi/content/short/20/12/2369 http://dx.doi.org/10.1093/plankt/20.12.2369 Copyright (C) 1998, Oxford University Press ORIGINAL ARTICLES TEXT 1998 fthighwire https://doi.org/10.1093/plankt/20.12.2369 2015-02-28T21:53:41Z In situ rates of egg production and hatching success are reported for Calanus simillimus , one of the most abundant calanoid species in peri-Antarctic regions, during the Italian ‘Italics’ cruise in the Straits of Magellan in March-April 1995. Low fecundity (8.6 eggs female−1 day−1) and fecal pellet production (0.8 fecal pellets female−1 day−1) in this period indicate that the species was feeding very poorly. Sixty-six of the 126 females sampled did not produce eggs and 80 of these did not produce any fecal pellets during the 24 h period of incubation. Striking abnormal naupliar and embryonic development was recorded in 81.8% of the eggs spawned. Aberrant eggs did not undergo normal cleavage, and failed to develop to hatching. Deformed nauplii were asymmetrical and presented strong anatomical anomalies in the total body length and number of swimming appendages. These results are discussed in the light of recent findings on the causes of low hatching success in copepods. Text Antarc* Antarctic Copepods HighWire Press (Stanford University) Antarctic Journal of Plankton Research 20 12 2369 2378 |
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Open Polar |
collection |
HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
ORIGINAL ARTICLES |
spellingShingle |
ORIGINAL ARTICLES Miralto, A. Ianora, A. Guglielmo, L Zagami, G. Buttino, I. Egg production and hatching success in the peri-Antarctic copepod Calanus simillimus |
topic_facet |
ORIGINAL ARTICLES |
description |
In situ rates of egg production and hatching success are reported for Calanus simillimus , one of the most abundant calanoid species in peri-Antarctic regions, during the Italian ‘Italics’ cruise in the Straits of Magellan in March-April 1995. Low fecundity (8.6 eggs female−1 day−1) and fecal pellet production (0.8 fecal pellets female−1 day−1) in this period indicate that the species was feeding very poorly. Sixty-six of the 126 females sampled did not produce eggs and 80 of these did not produce any fecal pellets during the 24 h period of incubation. Striking abnormal naupliar and embryonic development was recorded in 81.8% of the eggs spawned. Aberrant eggs did not undergo normal cleavage, and failed to develop to hatching. Deformed nauplii were asymmetrical and presented strong anatomical anomalies in the total body length and number of swimming appendages. These results are discussed in the light of recent findings on the causes of low hatching success in copepods. |
format |
Text |
author |
Miralto, A. Ianora, A. Guglielmo, L Zagami, G. Buttino, I. |
author_facet |
Miralto, A. Ianora, A. Guglielmo, L Zagami, G. Buttino, I. |
author_sort |
Miralto, A. |
title |
Egg production and hatching success in the peri-Antarctic copepod Calanus simillimus |
title_short |
Egg production and hatching success in the peri-Antarctic copepod Calanus simillimus |
title_full |
Egg production and hatching success in the peri-Antarctic copepod Calanus simillimus |
title_fullStr |
Egg production and hatching success in the peri-Antarctic copepod Calanus simillimus |
title_full_unstemmed |
Egg production and hatching success in the peri-Antarctic copepod Calanus simillimus |
title_sort |
egg production and hatching success in the peri-antarctic copepod calanus simillimus |
publisher |
Oxford University Press |
publishDate |
1998 |
url |
http://plankt.oxfordjournals.org/cgi/content/short/20/12/2369 https://doi.org/10.1093/plankt/20.12.2369 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Copepods |
genre_facet |
Antarc* Antarctic Copepods |
op_relation |
http://plankt.oxfordjournals.org/cgi/content/short/20/12/2369 http://dx.doi.org/10.1093/plankt/20.12.2369 |
op_rights |
Copyright (C) 1998, Oxford University Press |
op_doi |
https://doi.org/10.1093/plankt/20.12.2369 |
container_title |
Journal of Plankton Research |
container_volume |
20 |
container_issue |
12 |
container_start_page |
2369 |
op_container_end_page |
2378 |
_version_ |
1766256633181110272 |