Reproductive cycle and reproductive output of the sea urchin Loxechinus albus (Echinodermata: Echinoidea) from Beagle Channel, Tierra del Fuego, Argentina

Reproductive cycle, frequency and duration of spawning, energetic content of gonads, and reproductive output of the common green sea urchin Loxechinus albus were analyzed in the Beagle Channel (Tierra del Fuego) between May 2004 and May 2005. Gonad indices (GI, percentages of gonad mass in total bod...

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Detalles Bibliográficos
Autores principales: Pérez, Analía Fernanda, Boy, Claudia C.
Publicado: 2010
Materias:
Energetic content of gonads
Photoperiod
Reproductive cycle
Reproductive output
Sea urchins
bioenergetics
body mass
commercial species
echinoderm
photoperiod
reproductive cycle
reproductive productivity
spawning
Beagle Channel
Echinodermata
Echinoidea
Loxechinus albus
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v33_n3_p271_Perez
http://hdl.handle.net/20.500.12110/paper_07224060_v33_n3_p271_Perez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_07224060_v33_n3_p271_Perez
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spelling paper:paper_07224060_v33_n3_p271_Perez2023-06-08T15:43:36Z Reproductive cycle and reproductive output of the sea urchin Loxechinus albus (Echinodermata: Echinoidea) from Beagle Channel, Tierra del Fuego, Argentina Pérez, Analía Fernanda Boy, Claudia C. Energetic content of gonads Photoperiod Reproductive cycle Reproductive output Sea urchins bioenergetics body mass commercial species echinoderm photoperiod reproductive cycle reproductive productivity spawning Beagle Channel Echinodermata Echinoidea Loxechinus albus Reproductive cycle, frequency and duration of spawning, energetic content of gonads, and reproductive output of the common green sea urchin Loxechinus albus were analyzed in the Beagle Channel (Tierra del Fuego) between May 2004 and May 2005. Gonad indices (GI, percentages of gonad mass in total body mass) were significantly higher in March, April, July, and August than in November and May, thus showing a negative correlation with the photoperiod. Highest GI values of mature individuals were observed in August, and spawning occurred from September to December. In females, the mass-specific energy content of gonads (ECG) was highest in spawned gonads and lowest in mature ones, while in males ECG values were higher in immature stage and lower in premature and mature stages. High ECG values can be explained by the abundance of nutritive phagocytes. Both ECG and total gonad energy content (TECG) were higher in females than in males. Mean reproductive output was 7.28% for females and 6.15% for males (expressed as the difference between mean GI of mature and spawned gonads) and 25.02 kJ for females and 19.26 kJ for males (expressed as the difference between mean TECG of mature and spawned gonads). © Springer-Verlag 2009. Fil:Pérez, A.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Boy, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v33_n3_p271_Perez http://hdl.handle.net/20.500.12110/paper_07224060_v33_n3_p271_Perez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Energetic content of gonads
Photoperiod
Reproductive cycle
Reproductive output
Sea urchins
bioenergetics
body mass
commercial species
echinoderm
photoperiod
reproductive cycle
reproductive productivity
spawning
Beagle Channel
Echinodermata
Echinoidea
Loxechinus albus
spellingShingle Energetic content of gonads
Photoperiod
Reproductive cycle
Reproductive output
Sea urchins
bioenergetics
body mass
commercial species
echinoderm
photoperiod
reproductive cycle
reproductive productivity
spawning
Beagle Channel
Echinodermata
Echinoidea
Loxechinus albus
Pérez, Analía Fernanda
Boy, Claudia C.
Reproductive cycle and reproductive output of the sea urchin Loxechinus albus (Echinodermata: Echinoidea) from Beagle Channel, Tierra del Fuego, Argentina
topic_facet Energetic content of gonads
Photoperiod
Reproductive cycle
Reproductive output
Sea urchins
bioenergetics
body mass
commercial species
echinoderm
photoperiod
reproductive cycle
reproductive productivity
spawning
Beagle Channel
Echinodermata
Echinoidea
Loxechinus albus
description Reproductive cycle, frequency and duration of spawning, energetic content of gonads, and reproductive output of the common green sea urchin Loxechinus albus were analyzed in the Beagle Channel (Tierra del Fuego) between May 2004 and May 2005. Gonad indices (GI, percentages of gonad mass in total body mass) were significantly higher in March, April, July, and August than in November and May, thus showing a negative correlation with the photoperiod. Highest GI values of mature individuals were observed in August, and spawning occurred from September to December. In females, the mass-specific energy content of gonads (ECG) was highest in spawned gonads and lowest in mature ones, while in males ECG values were higher in immature stage and lower in premature and mature stages. High ECG values can be explained by the abundance of nutritive phagocytes. Both ECG and total gonad energy content (TECG) were higher in females than in males. Mean reproductive output was 7.28% for females and 6.15% for males (expressed as the difference between mean GI of mature and spawned gonads) and 25.02 kJ for females and 19.26 kJ for males (expressed as the difference between mean TECG of mature and spawned gonads). © Springer-Verlag 2009.
author Pérez, Analía Fernanda
Boy, Claudia C.
author_facet Pérez, Analía Fernanda
Boy, Claudia C.
author_sort Pérez, Analía Fernanda
title Reproductive cycle and reproductive output of the sea urchin Loxechinus albus (Echinodermata: Echinoidea) from Beagle Channel, Tierra del Fuego, Argentina
title_short Reproductive cycle and reproductive output of the sea urchin Loxechinus albus (Echinodermata: Echinoidea) from Beagle Channel, Tierra del Fuego, Argentina
title_full Reproductive cycle and reproductive output of the sea urchin Loxechinus albus (Echinodermata: Echinoidea) from Beagle Channel, Tierra del Fuego, Argentina
title_fullStr Reproductive cycle and reproductive output of the sea urchin Loxechinus albus (Echinodermata: Echinoidea) from Beagle Channel, Tierra del Fuego, Argentina
title_full_unstemmed Reproductive cycle and reproductive output of the sea urchin Loxechinus albus (Echinodermata: Echinoidea) from Beagle Channel, Tierra del Fuego, Argentina
title_sort reproductive cycle and reproductive output of the sea urchin loxechinus albus (echinodermata: echinoidea) from beagle channel, tierra del fuego, argentina
publishDate 2010
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v33_n3_p271_Perez
http://hdl.handle.net/20.500.12110/paper_07224060_v33_n3_p271_Perez
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