Variable within-brood maternal provisioning in newly extruded embryos of Homarus gammarus
Offspring quality of decapod crustaceans has been widely studied, with special emphasis on the sources of variability determining embryonic and larval quality. Nevertheless, maternal provisioning has commonly been overlooked as a potential source of offspring within-brood variability. In the present...
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ftlneg:oai:repositorio.lneg.pt:10400.9/2027 2023-05-15T16:34:42+02:00 Variable within-brood maternal provisioning in newly extruded embryos of Homarus gammarus Leal, Miguel Costa Pochelon, Patricia N. Silva, Teresa Lopes da Reis, Alberto Rosa, Rui Calado, Ricardo 2013-10-17T14:18:24Z http://hdl.handle.net/10400.9/2027 eng eng Springer http://dx.doi.org/10.1007/s00227-012-2131-2 Leal, Miguel C.; Pochelon, Patricia N.; Silva, T. Lopes da; Reis, A., Rosa, R.; Calado, R. Variable within-brood maternal provisioning in newly extruded embryos of Homarus gammarus. In: Marine Biology, 2013, Vol. 60, nº 4, p. 763-772 0025-3162 http://hdl.handle.net/10400.9/2027 openAccess article 2013 ftlneg https://doi.org/10.1007/s00227-012-2131-2 2021-10-16T17:50:04Z Offspring quality of decapod crustaceans has been widely studied, with special emphasis on the sources of variability determining embryonic and larval quality. Nevertheless, maternal provisioning has commonly been overlooked as a potential source of offspring within-brood variability. In the present study, the existence of variable maternal provisioning was assessed through the analysis of the fatty acid (FA) profile of newly extruded embryos from different regions of the brooding chamber of Homarus gammarus. Significant differences in the FA profile of embryos sampled from different pleopods and sides of the brooding chamber were recorded. Significant deviations of the overall mean of each surveyed female were also observed for essential FA, particularly 20:4n-6, 20:5n-3 and 22:6n-3. Lipid energy available to fuel embryogenesis also varied among embryos sampled from different regions of the brooding chamber. Results suggest variable female investment at oocyte production, which may be amplified during the incubation period of developing embryos by differential lipid catabolism. For the first time, maternal provisioning is evidenced as an additional source for within-brood variability in the FA profile of embryos. Article in Journal/Newspaper Homarus gammarus Laboratório Nacional de Energia e Geologia: Repositório Científico do LNEG Marine Biology 160 4 763 772 |
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Open Polar |
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Laboratório Nacional de Energia e Geologia: Repositório Científico do LNEG |
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ftlneg |
language |
English |
description |
Offspring quality of decapod crustaceans has been widely studied, with special emphasis on the sources of variability determining embryonic and larval quality. Nevertheless, maternal provisioning has commonly been overlooked as a potential source of offspring within-brood variability. In the present study, the existence of variable maternal provisioning was assessed through the analysis of the fatty acid (FA) profile of newly extruded embryos from different regions of the brooding chamber of Homarus gammarus. Significant differences in the FA profile of embryos sampled from different pleopods and sides of the brooding chamber were recorded. Significant deviations of the overall mean of each surveyed female were also observed for essential FA, particularly 20:4n-6, 20:5n-3 and 22:6n-3. Lipid energy available to fuel embryogenesis also varied among embryos sampled from different regions of the brooding chamber. Results suggest variable female investment at oocyte production, which may be amplified during the incubation period of developing embryos by differential lipid catabolism. For the first time, maternal provisioning is evidenced as an additional source for within-brood variability in the FA profile of embryos. |
format |
Article in Journal/Newspaper |
author |
Leal, Miguel Costa Pochelon, Patricia N. Silva, Teresa Lopes da Reis, Alberto Rosa, Rui Calado, Ricardo |
spellingShingle |
Leal, Miguel Costa Pochelon, Patricia N. Silva, Teresa Lopes da Reis, Alberto Rosa, Rui Calado, Ricardo Variable within-brood maternal provisioning in newly extruded embryos of Homarus gammarus |
author_facet |
Leal, Miguel Costa Pochelon, Patricia N. Silva, Teresa Lopes da Reis, Alberto Rosa, Rui Calado, Ricardo |
author_sort |
Leal, Miguel Costa |
title |
Variable within-brood maternal provisioning in newly extruded embryos of Homarus gammarus |
title_short |
Variable within-brood maternal provisioning in newly extruded embryos of Homarus gammarus |
title_full |
Variable within-brood maternal provisioning in newly extruded embryos of Homarus gammarus |
title_fullStr |
Variable within-brood maternal provisioning in newly extruded embryos of Homarus gammarus |
title_full_unstemmed |
Variable within-brood maternal provisioning in newly extruded embryos of Homarus gammarus |
title_sort |
variable within-brood maternal provisioning in newly extruded embryos of homarus gammarus |
publisher |
Springer |
publishDate |
2013 |
url |
http://hdl.handle.net/10400.9/2027 |
genre |
Homarus gammarus |
genre_facet |
Homarus gammarus |
op_relation |
http://dx.doi.org/10.1007/s00227-012-2131-2 Leal, Miguel C.; Pochelon, Patricia N.; Silva, T. Lopes da; Reis, A., Rosa, R.; Calado, R. Variable within-brood maternal provisioning in newly extruded embryos of Homarus gammarus. In: Marine Biology, 2013, Vol. 60, nº 4, p. 763-772 0025-3162 http://hdl.handle.net/10400.9/2027 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1007/s00227-012-2131-2 |
container_title |
Marine Biology |
container_volume |
160 |
container_issue |
4 |
container_start_page |
763 |
op_container_end_page |
772 |
_version_ |
1766024682797006848 |