Changes in biomass and elemental composition during early ontogeny of the Antarctic isopod crustacean Ceratoserolis trilobitoides
Changes in biomass and elemental composition (dry mass, DM; carbon, C; hydrogen, H; nitrogen, N) were studied throughout the early ontogeny in the serolid isopod Ceratoserolis trilobitoides from a population off the South Shetland Islands (62°24.35?S, 61°23.77?W). Specimens of C. trilobitoides were...
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ftsouthampton:oai:eprints.soton.ac.uk:51151 2023-07-30T03:59:24+02:00 Changes in biomass and elemental composition during early ontogeny of the Antarctic isopod crustacean Ceratoserolis trilobitoides Heilmayer, Olaf Thatje, Sven McClelland, Christine Conlan, Kathleen Brey, Thomas 2008-10 text https://eprints.soton.ac.uk/51151/ https://eprints.soton.ac.uk/51151/1/Heilmayer_PolarBiol_08.pdf http://www.springerlink.com/content/0858821r6p315454/?p=ed0cdd079e99446da19fc46158f29b20&pi=3 en eng https://eprints.soton.ac.uk/51151/1/Heilmayer_PolarBiol_08.pdf Heilmayer, Olaf, Thatje, Sven, McClelland, Christine, Conlan, Kathleen and Brey, Thomas (2008) Changes in biomass and elemental composition during early ontogeny of the Antarctic isopod crustacean Ceratoserolis trilobitoides. Polar Biology, 31 (11), 1325-1331. (doi:10.1007/s00300-008-0470-8 <http://dx.doi.org/10.1007/s00300-008-0470-8>). Article PeerReviewed 2008 ftsouthampton https://doi.org/10.1007/s00300-008-0470-8 2023-07-09T20:55:18Z Changes in biomass and elemental composition (dry mass, DM; carbon, C; hydrogen, H; nitrogen, N) were studied throughout the early ontogeny in the serolid isopod Ceratoserolis trilobitoides from a population off the South Shetland Islands (62°24.35?S, 61°23.77?W). Specimens of C. trilobitoides were sampled using an Agassiz trawl during the expedition ANT XXIII-8 of RV Polarstern in January 2007. Classification of embryos into six developmental stages followed previous studies. No clear size-dependant fecundity relationship was found in ovigerous C. trilobitoides. Egg volume increased by about 160 and 400% from stage I to IV and stage IV to VI, respectively. DM, C, N, and H continuously decreased throughout the early ontogeny from stage I to VI, but DM showed significant increase on reaching the late-V stage and premanca stages. The C:N ratio remained relatively stable throughout stages I to V, followed by a significant drop from about 6.17 to 5.5 in subsequent stages, indicating depletion of lipid resources of maternal origin. The results coincide with previous studies and indicate a shift from a lipid-based metabolism throughout early embryo stages to a protein-based metabolism in the late-V and premanca stage, which requires external energy supply. Given the steep increase in DM in the final phase of embryo development (late-V stage to premanca) and the need for external food supply to exert growth, the possibility of external food supply or cannibalism in early offspring of C. trilobitoides is discussed. Article in Journal/Newspaper Antarc* Antarctic Polar Biology South Shetland Islands University of Southampton: e-Prints Soton Antarctic The Antarctic South Shetland Islands Polar Biology 31 11 1325 1331 |
institution |
Open Polar |
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University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
Changes in biomass and elemental composition (dry mass, DM; carbon, C; hydrogen, H; nitrogen, N) were studied throughout the early ontogeny in the serolid isopod Ceratoserolis trilobitoides from a population off the South Shetland Islands (62°24.35?S, 61°23.77?W). Specimens of C. trilobitoides were sampled using an Agassiz trawl during the expedition ANT XXIII-8 of RV Polarstern in January 2007. Classification of embryos into six developmental stages followed previous studies. No clear size-dependant fecundity relationship was found in ovigerous C. trilobitoides. Egg volume increased by about 160 and 400% from stage I to IV and stage IV to VI, respectively. DM, C, N, and H continuously decreased throughout the early ontogeny from stage I to VI, but DM showed significant increase on reaching the late-V stage and premanca stages. The C:N ratio remained relatively stable throughout stages I to V, followed by a significant drop from about 6.17 to 5.5 in subsequent stages, indicating depletion of lipid resources of maternal origin. The results coincide with previous studies and indicate a shift from a lipid-based metabolism throughout early embryo stages to a protein-based metabolism in the late-V and premanca stage, which requires external energy supply. Given the steep increase in DM in the final phase of embryo development (late-V stage to premanca) and the need for external food supply to exert growth, the possibility of external food supply or cannibalism in early offspring of C. trilobitoides is discussed. |
format |
Article in Journal/Newspaper |
author |
Heilmayer, Olaf Thatje, Sven McClelland, Christine Conlan, Kathleen Brey, Thomas |
spellingShingle |
Heilmayer, Olaf Thatje, Sven McClelland, Christine Conlan, Kathleen Brey, Thomas Changes in biomass and elemental composition during early ontogeny of the Antarctic isopod crustacean Ceratoserolis trilobitoides |
author_facet |
Heilmayer, Olaf Thatje, Sven McClelland, Christine Conlan, Kathleen Brey, Thomas |
author_sort |
Heilmayer, Olaf |
title |
Changes in biomass and elemental composition during early ontogeny of the Antarctic isopod crustacean Ceratoserolis trilobitoides |
title_short |
Changes in biomass and elemental composition during early ontogeny of the Antarctic isopod crustacean Ceratoserolis trilobitoides |
title_full |
Changes in biomass and elemental composition during early ontogeny of the Antarctic isopod crustacean Ceratoserolis trilobitoides |
title_fullStr |
Changes in biomass and elemental composition during early ontogeny of the Antarctic isopod crustacean Ceratoserolis trilobitoides |
title_full_unstemmed |
Changes in biomass and elemental composition during early ontogeny of the Antarctic isopod crustacean Ceratoserolis trilobitoides |
title_sort |
changes in biomass and elemental composition during early ontogeny of the antarctic isopod crustacean ceratoserolis trilobitoides |
publishDate |
2008 |
url |
https://eprints.soton.ac.uk/51151/ https://eprints.soton.ac.uk/51151/1/Heilmayer_PolarBiol_08.pdf http://www.springerlink.com/content/0858821r6p315454/?p=ed0cdd079e99446da19fc46158f29b20&pi=3 |
geographic |
Antarctic The Antarctic South Shetland Islands |
geographic_facet |
Antarctic The Antarctic South Shetland Islands |
genre |
Antarc* Antarctic Polar Biology South Shetland Islands |
genre_facet |
Antarc* Antarctic Polar Biology South Shetland Islands |
op_relation |
https://eprints.soton.ac.uk/51151/1/Heilmayer_PolarBiol_08.pdf Heilmayer, Olaf, Thatje, Sven, McClelland, Christine, Conlan, Kathleen and Brey, Thomas (2008) Changes in biomass and elemental composition during early ontogeny of the Antarctic isopod crustacean Ceratoserolis trilobitoides. Polar Biology, 31 (11), 1325-1331. (doi:10.1007/s00300-008-0470-8 <http://dx.doi.org/10.1007/s00300-008-0470-8>). |
op_doi |
https://doi.org/10.1007/s00300-008-0470-8 |
container_title |
Polar Biology |
container_volume |
31 |
container_issue |
11 |
container_start_page |
1325 |
op_container_end_page |
1331 |
_version_ |
1772810191876653056 |