Oocyte production, fecundity, and size at the onset of reproduction of Tripalea clavaria (Cnidaria: Octocorallia: Anthothelidae) in the southwestern Atlantic

Oocyte production, fecundity, and size at the onset of reproduction of Tripalea clavaria (Cnidaria, Octocorallia, Anthothelidae) in the southwestern Atlantic. Zoological Studies 50(4): 434-442. The octocoral Tripalea clavaria is a gonochoristic species distributed in the southwestern Atlantic from R...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Excoffon, A.C., Navella, M.L., Acuña, F.H., Garese, A.
Formato: JOUR
Lenguaje:English
Materias:
Octocoral
Sexual reproduction
Southwestern Atlantic
Tripalea clavaria
Alcyonaria
Anthothelidae
Cnidaria
Gorgonia
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10215506_v50_n4_p434_Excoffon
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_10215506_v50_n4_p434_Excoffon
record_format dspace
spelling todo:paper_10215506_v50_n4_p434_Excoffon2023-10-03T15:56:36Z Oocyte production, fecundity, and size at the onset of reproduction of Tripalea clavaria (Cnidaria: Octocorallia: Anthothelidae) in the southwestern Atlantic Excoffon, A.C. Navella, M.L. Acuña, F.H. Garese, A. Octocoral Sexual reproduction Southwestern Atlantic Tripalea clavaria Alcyonaria Anthothelidae Cnidaria Gorgonia Tripalea clavaria Oocyte production, fecundity, and size at the onset of reproduction of Tripalea clavaria (Cnidaria, Octocorallia, Anthothelidae) in the southwestern Atlantic. Zoological Studies 50(4): 434-442. The octocoral Tripalea clavaria is a gonochoristic species distributed in the southwestern Atlantic from Rio de Janeiro to the Magellan Strait and is restricted to waters with temperatures of < 20°C. Female colonies are significantly more abundant than males, and their gonads are present throughout the entire year. Male fertile colonies were found only in Dec.-June, because the spermatogenic cycle is shorter than oogenesis, as is characteristic of other octocorals. Fertilization is probably internal, taking place within polyps of female colonies in Mar.-May. Planulae of T. clavaria were found in Apr.- June. The length of larvae was 554-1980 μm, and a maximum of 4 planulae was observed per polyp. The high number of large oocytes per polyp implies that this species allocates most of it energetic resources to sexual reproduction. Regarding the variability of volume of oocytes per polyp, the lowest value was 1.35 × 10-5 mm3, and the highest was 0.17 mm3. Although the reproductive features of T. clavaria are similar to those of other gorgonian octocorals, it has some exceptional features. Despite having small and unbranched colonies, this species exhibits a small colony size at 1st reproduction (2.7 cm) and is highly fecund, producing high numbers of large oocytes compared to other octocorals. Such reproductive traits could explain its successful recruitment on the limited available substrate of rocky outcrops, often characterized by strong currents and turbulence. JOUR English info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10215506_v50_n4_p434_Excoffon
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language English
orig_language_str_mv English
topic Octocoral
Sexual reproduction
Southwestern Atlantic
Tripalea clavaria
Alcyonaria
Anthothelidae
Cnidaria
Gorgonia
Tripalea clavaria
spellingShingle Octocoral
Sexual reproduction
Southwestern Atlantic
Tripalea clavaria
Alcyonaria
Anthothelidae
Cnidaria
Gorgonia
Tripalea clavaria
Excoffon, A.C.
Navella, M.L.
Acuña, F.H.
Garese, A.
Oocyte production, fecundity, and size at the onset of reproduction of Tripalea clavaria (Cnidaria: Octocorallia: Anthothelidae) in the southwestern Atlantic
topic_facet Octocoral
Sexual reproduction
Southwestern Atlantic
Tripalea clavaria
Alcyonaria
Anthothelidae
Cnidaria
Gorgonia
Tripalea clavaria
description Oocyte production, fecundity, and size at the onset of reproduction of Tripalea clavaria (Cnidaria, Octocorallia, Anthothelidae) in the southwestern Atlantic. Zoological Studies 50(4): 434-442. The octocoral Tripalea clavaria is a gonochoristic species distributed in the southwestern Atlantic from Rio de Janeiro to the Magellan Strait and is restricted to waters with temperatures of < 20°C. Female colonies are significantly more abundant than males, and their gonads are present throughout the entire year. Male fertile colonies were found only in Dec.-June, because the spermatogenic cycle is shorter than oogenesis, as is characteristic of other octocorals. Fertilization is probably internal, taking place within polyps of female colonies in Mar.-May. Planulae of T. clavaria were found in Apr.- June. The length of larvae was 554-1980 μm, and a maximum of 4 planulae was observed per polyp. The high number of large oocytes per polyp implies that this species allocates most of it energetic resources to sexual reproduction. Regarding the variability of volume of oocytes per polyp, the lowest value was 1.35 × 10-5 mm3, and the highest was 0.17 mm3. Although the reproductive features of T. clavaria are similar to those of other gorgonian octocorals, it has some exceptional features. Despite having small and unbranched colonies, this species exhibits a small colony size at 1st reproduction (2.7 cm) and is highly fecund, producing high numbers of large oocytes compared to other octocorals. Such reproductive traits could explain its successful recruitment on the limited available substrate of rocky outcrops, often characterized by strong currents and turbulence.
format JOUR
author Excoffon, A.C.
Navella, M.L.
Acuña, F.H.
Garese, A.
author_facet Excoffon, A.C.
Navella, M.L.
Acuña, F.H.
Garese, A.
author_sort Excoffon, A.C.
title Oocyte production, fecundity, and size at the onset of reproduction of Tripalea clavaria (Cnidaria: Octocorallia: Anthothelidae) in the southwestern Atlantic
title_short Oocyte production, fecundity, and size at the onset of reproduction of Tripalea clavaria (Cnidaria: Octocorallia: Anthothelidae) in the southwestern Atlantic
title_full Oocyte production, fecundity, and size at the onset of reproduction of Tripalea clavaria (Cnidaria: Octocorallia: Anthothelidae) in the southwestern Atlantic
title_fullStr Oocyte production, fecundity, and size at the onset of reproduction of Tripalea clavaria (Cnidaria: Octocorallia: Anthothelidae) in the southwestern Atlantic
title_full_unstemmed Oocyte production, fecundity, and size at the onset of reproduction of Tripalea clavaria (Cnidaria: Octocorallia: Anthothelidae) in the southwestern Atlantic
title_sort oocyte production, fecundity, and size at the onset of reproduction of tripalea clavaria (cnidaria: octocorallia: anthothelidae) in the southwestern atlantic
url http://hdl.handle.net/20.500.12110/paper_10215506_v50_n4_p434_Excoffon
work_keys_str_mv AT excoffonac oocyteproductionfecundityandsizeattheonsetofreproductionoftripaleaclavariacnidariaoctocoralliaanthothelidaeinthesouthwesternatlantic
AT navellaml oocyteproductionfecundityandsizeattheonsetofreproductionoftripaleaclavariacnidariaoctocoralliaanthothelidaeinthesouthwesternatlantic
AT acunafh oocyteproductionfecundityandsizeattheonsetofreproductionoftripaleaclavariacnidariaoctocoralliaanthothelidaeinthesouthwesternatlantic
AT garesea oocyteproductionfecundityandsizeattheonsetofreproductionoftripaleaclavariacnidariaoctocoralliaanthothelidaeinthesouthwesternatlantic
_version_ 1782027820719931392

Ejemplares similares