Larval development of Limnoperna fortunei

Mature sperm cells of Limnoperna fortunei measure about 4 µm, and ova are typically spherical, 80-100 µm in diameter. Forty minutes after spawning, the first polar lobe appears, and the first division occurs 14 min later. Slightly over an hour after spawning, the second polar lobe appears and the se...

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Detalles Bibliográficos
Autor principal: Cataldo, D.H.
Formato: CHAP
Materias:
Development
Larvae
Limnoperna fortunei
Morphology
Veliger
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_97833191_v_n_p43_Cataldo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_97833191_v_n_p43_Cataldo2023-10-03T16:44:55Z Larval development of Limnoperna fortunei Cataldo, D.H. Development Larvae Limnoperna fortunei Morphology Veliger Mature sperm cells of Limnoperna fortunei measure about 4 µm, and ova are typically spherical, 80-100 µm in diameter. Forty minutes after spawning, the first polar lobe appears, and the first division occurs 14 min later. Slightly over an hour after spawning, the second polar lobe appears and the second division yields a 4-cell stage. The third division occurs 90 min after spawning, and the fourth 115 min after spawning. Approximately 3.5 h after spawning (at 26 °C) the morula stage is reached. Six hours after spawning, the first trochophores appear (95-110 µm in length) at 28 °C. Subsequently, the prodissoconch I starts developing, initially as small rosette-shaped structures on the dorsal side of the trochophore. Straight-hinged veligers (115-160 µm) start appearing 24 h after spawning. These larvae start feeding externally and secrete the prodissoconch II. Umboned veligers (156-220 µm) are reached 287 (at 28 °C), 165 (25 °C) and 118 (20 °C) h after spawning. From there on, the larva reabsorbs its velum and develops a muscular, adhesive foot, yielding a plantigrade larva (250-405 µm), which shortly thereafter settles and attaches to the substrate. Development times are therefore strongly influenced by water temperature. © Springer International Publishing Switzerland 2015. Fil:Cataldo, D.H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. CHAP info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_97833191_v_n_p43_Cataldo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Development
Larvae
Limnoperna fortunei
Morphology
Veliger
spellingShingle Development
Larvae
Limnoperna fortunei
Morphology
Veliger
Cataldo, D.H.
Larval development of Limnoperna fortunei
topic_facet Development
Larvae
Limnoperna fortunei
Morphology
Veliger
description Mature sperm cells of Limnoperna fortunei measure about 4 µm, and ova are typically spherical, 80-100 µm in diameter. Forty minutes after spawning, the first polar lobe appears, and the first division occurs 14 min later. Slightly over an hour after spawning, the second polar lobe appears and the second division yields a 4-cell stage. The third division occurs 90 min after spawning, and the fourth 115 min after spawning. Approximately 3.5 h after spawning (at 26 °C) the morula stage is reached. Six hours after spawning, the first trochophores appear (95-110 µm in length) at 28 °C. Subsequently, the prodissoconch I starts developing, initially as small rosette-shaped structures on the dorsal side of the trochophore. Straight-hinged veligers (115-160 µm) start appearing 24 h after spawning. These larvae start feeding externally and secrete the prodissoconch II. Umboned veligers (156-220 µm) are reached 287 (at 28 °C), 165 (25 °C) and 118 (20 °C) h after spawning. From there on, the larva reabsorbs its velum and develops a muscular, adhesive foot, yielding a plantigrade larva (250-405 µm), which shortly thereafter settles and attaches to the substrate. Development times are therefore strongly influenced by water temperature. © Springer International Publishing Switzerland 2015.
format CHAP
author Cataldo, D.H.
author_facet Cataldo, D.H.
author_sort Cataldo, D.H.
title Larval development of Limnoperna fortunei
title_short Larval development of Limnoperna fortunei
title_full Larval development of Limnoperna fortunei
title_fullStr Larval development of Limnoperna fortunei
title_full_unstemmed Larval development of Limnoperna fortunei
title_sort larval development of limnoperna fortunei
url http://hdl.handle.net/20.500.12110/paper_97833191_v_n_p43_Cataldo
work_keys_str_mv AT cataldodh larvaldevelopmentoflimnopernafortunei
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