Temporal and spatial differences in the reproductive biology of the sea urchin Arbacia dufresnii

The reproductive cycle of Arbacia dufresnii was studied in two contrasting populations on the eastern coast of Patagonia (Nuevo Gulf and San Jorge Gulf) from January 2008 to August 2010. Sea urchins from San Jorge Gulf had larger test diameter and heavier gonads than did sea urchins from Nuevo Gulf....

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Autores principales: Epherra, L., Gil, D.G., Rubilar, T., Perez-Gallo, S., Reartes, M.B., Tolosano, J.A.
Formato: JOUR
Materias:
Echinoidea
gametogenic cycle
nutritive phagocytes
Patagonia.
annual cycle
annual variation
echinoderm
gamete
gametogenesis
high temperature
phenotypic plasticity
population distribution
reproductive biology
spatiotemporal analysis
spawning population
Atlantic Ocean
Nuevo Gulf
San Jorge Gulf
Arbacia
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_13231650_v66_n4_p329_Epherra
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_13231650_v66_n4_p329_Epherra
record_format dspace
spelling todo:paper_13231650_v66_n4_p329_Epherra2023-10-03T16:09:27Z Temporal and spatial differences in the reproductive biology of the sea urchin Arbacia dufresnii Epherra, L. Gil, D.G. Rubilar, T. Perez-Gallo, S. Reartes, M.B. Tolosano, J.A. Echinoidea gametogenic cycle nutritive phagocytes Patagonia. annual cycle annual variation echinoderm gamete gametogenesis high temperature phenotypic plasticity population distribution reproductive biology spatiotemporal analysis spawning population Atlantic Ocean Nuevo Gulf San Jorge Gulf Arbacia Echinoidea The reproductive cycle of Arbacia dufresnii was studied in two contrasting populations on the eastern coast of Patagonia (Nuevo Gulf and San Jorge Gulf) from January 2008 to August 2010. Sea urchins from San Jorge Gulf had larger test diameter and heavier gonads than did sea urchins from Nuevo Gulf. A. dufresnii showed an annual cycle in both populations, with gametogenesis occurring mainly in the autumn and the winter. An extended spawning period took place during the spring and the summer. Sea urchins from Nuevo Gulf had a strong seasonal pattern of reproduction, with presence of gonadal stages showing re-absortion and accumulation of reserves in nutritive cells at different seasons, whereas individuals from San Jorge Gulf had mature gametes during most of the year. Interannual variation of seawater temperature affected the gamete production and spawning duration in both populations. Higher temperatures during gametogenesis enhanced gonadal growth and gametes were released early. The major population differences found in gonadal cell composition highlight the plasticity in reproductive traits of A. dufresnii, and may be responsible for the wide distribution of A. dufresnii in different environments. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_13231650_v66_n4_p329_Epherra
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Echinoidea
gametogenic cycle
nutritive phagocytes
Patagonia.
annual cycle
annual variation
echinoderm
gamete
gametogenesis
high temperature
phenotypic plasticity
population distribution
reproductive biology
spatiotemporal analysis
spawning population
Atlantic Ocean
Nuevo Gulf
San Jorge Gulf
Arbacia
Echinoidea
spellingShingle Echinoidea
gametogenic cycle
nutritive phagocytes
Patagonia.
annual cycle
annual variation
echinoderm
gamete
gametogenesis
high temperature
phenotypic plasticity
population distribution
reproductive biology
spatiotemporal analysis
spawning population
Atlantic Ocean
Nuevo Gulf
San Jorge Gulf
Arbacia
Echinoidea
Epherra, L.
Gil, D.G.
Rubilar, T.
Perez-Gallo, S.
Reartes, M.B.
Tolosano, J.A.
Temporal and spatial differences in the reproductive biology of the sea urchin Arbacia dufresnii
topic_facet Echinoidea
gametogenic cycle
nutritive phagocytes
Patagonia.
annual cycle
annual variation
echinoderm
gamete
gametogenesis
high temperature
phenotypic plasticity
population distribution
reproductive biology
spatiotemporal analysis
spawning population
Atlantic Ocean
Nuevo Gulf
San Jorge Gulf
Arbacia
Echinoidea
description The reproductive cycle of Arbacia dufresnii was studied in two contrasting populations on the eastern coast of Patagonia (Nuevo Gulf and San Jorge Gulf) from January 2008 to August 2010. Sea urchins from San Jorge Gulf had larger test diameter and heavier gonads than did sea urchins from Nuevo Gulf. A. dufresnii showed an annual cycle in both populations, with gametogenesis occurring mainly in the autumn and the winter. An extended spawning period took place during the spring and the summer. Sea urchins from Nuevo Gulf had a strong seasonal pattern of reproduction, with presence of gonadal stages showing re-absortion and accumulation of reserves in nutritive cells at different seasons, whereas individuals from San Jorge Gulf had mature gametes during most of the year. Interannual variation of seawater temperature affected the gamete production and spawning duration in both populations. Higher temperatures during gametogenesis enhanced gonadal growth and gametes were released early. The major population differences found in gonadal cell composition highlight the plasticity in reproductive traits of A. dufresnii, and may be responsible for the wide distribution of A. dufresnii in different environments.
format JOUR
author Epherra, L.
Gil, D.G.
Rubilar, T.
Perez-Gallo, S.
Reartes, M.B.
Tolosano, J.A.
author_facet Epherra, L.
Gil, D.G.
Rubilar, T.
Perez-Gallo, S.
Reartes, M.B.
Tolosano, J.A.
author_sort Epherra, L.
title Temporal and spatial differences in the reproductive biology of the sea urchin Arbacia dufresnii
title_short Temporal and spatial differences in the reproductive biology of the sea urchin Arbacia dufresnii
title_full Temporal and spatial differences in the reproductive biology of the sea urchin Arbacia dufresnii
title_fullStr Temporal and spatial differences in the reproductive biology of the sea urchin Arbacia dufresnii
title_full_unstemmed Temporal and spatial differences in the reproductive biology of the sea urchin Arbacia dufresnii
title_sort temporal and spatial differences in the reproductive biology of the sea urchin arbacia dufresnii
url http://hdl.handle.net/20.500.12110/paper_13231650_v66_n4_p329_Epherra
work_keys_str_mv AT epherral temporalandspatialdifferencesinthereproductivebiologyoftheseaurchinarbaciadufresnii
AT gildg temporalandspatialdifferencesinthereproductivebiologyoftheseaurchinarbaciadufresnii
AT rubilart temporalandspatialdifferencesinthereproductivebiologyoftheseaurchinarbaciadufresnii
AT perezgallos temporalandspatialdifferencesinthereproductivebiologyoftheseaurchinarbaciadufresnii
AT reartesmb temporalandspatialdifferencesinthereproductivebiologyoftheseaurchinarbaciadufresnii
AT tolosanoja temporalandspatialdifferencesinthereproductivebiologyoftheseaurchinarbaciadufresnii
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