The biology and ecology of the giant free egg capsules of adelomelon brasiliana lamarck, 1811 (gastropoda: Volutidae)

A three-year study was conducted to determine oviposition periods of the volutid gastropod Adelomelon brasiliana, the abundance and distribution pattern of its egg capsules in the region of Mar del Plata, Argentina. Results indicate that oviposition was correlated with water temperature. Reproductio...

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Autor principal: Luzzatto, D.C.
Formato: SER
Materias:
Adelomelon brasiliana
Distribution pattern
Intracapsular development stages
Oviposition
Reproductive season
Storm events
Volutidae
Adelomelon
Gastropoda
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00762997_v49_n1_p107_Luzzatto
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00762997_v49_n1_p107_Luzzatto
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spelling todo:paper_00762997_v49_n1_p107_Luzzatto2023-10-03T14:54:06Z The biology and ecology of the giant free egg capsules of adelomelon brasiliana lamarck, 1811 (gastropoda: Volutidae) Luzzatto, D.C. Adelomelon brasiliana Distribution pattern Intracapsular development stages Oviposition Reproductive season Storm events Volutidae Adelomelon Gastropoda Volutidae A three-year study was conducted to determine oviposition periods of the volutid gastropod Adelomelon brasiliana, the abundance and distribution pattern of its egg capsules in the region of Mar del Plata, Argentina. Results indicate that oviposition was correlated with water temperature. Reproduction occurred from September/October to May/June. Because egg capsules are not attached to the substratum and drift freely on the bottom along a narrow zone close to the shoreline, they can become stranded on the beach after storms, thus suffering mass mortality. This was reflected by a decline in snail recruitment during one study year in which storm surges were frequent and severe. The developmental stages of the egg capsules were characterized, and the proportion of early and late developmental stages determined monthly. This allowed an estimate of recruitment during each reproductive season. Twenty percent of the egg capsules at hatching contained one to three embryos that were considerably smaller than their siblings and 6% of the egg capsules at the same developed stage had one to four teratological embryos. Egg capsules laid down on the sea bottom showed an aggregated distribution pattern. The average developmental time was 57 ± 4 days. Protein and sugar concentration and pH of the intracapsular fluid decreased as embryo development progressed. Several proteins with different molecular weights were present in the intracapsular fluid during the entire intracapsular development. SER info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00762997_v49_n1_p107_Luzzatto
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Adelomelon brasiliana
Distribution pattern
Intracapsular development stages
Oviposition
Reproductive season
Storm events
Volutidae
Adelomelon
Gastropoda
Volutidae
spellingShingle Adelomelon brasiliana
Distribution pattern
Intracapsular development stages
Oviposition
Reproductive season
Storm events
Volutidae
Adelomelon
Gastropoda
Volutidae
Luzzatto, D.C.
The biology and ecology of the giant free egg capsules of adelomelon brasiliana lamarck, 1811 (gastropoda: Volutidae)
topic_facet Adelomelon brasiliana
Distribution pattern
Intracapsular development stages
Oviposition
Reproductive season
Storm events
Volutidae
Adelomelon
Gastropoda
Volutidae
description A three-year study was conducted to determine oviposition periods of the volutid gastropod Adelomelon brasiliana, the abundance and distribution pattern of its egg capsules in the region of Mar del Plata, Argentina. Results indicate that oviposition was correlated with water temperature. Reproduction occurred from September/October to May/June. Because egg capsules are not attached to the substratum and drift freely on the bottom along a narrow zone close to the shoreline, they can become stranded on the beach after storms, thus suffering mass mortality. This was reflected by a decline in snail recruitment during one study year in which storm surges were frequent and severe. The developmental stages of the egg capsules were characterized, and the proportion of early and late developmental stages determined monthly. This allowed an estimate of recruitment during each reproductive season. Twenty percent of the egg capsules at hatching contained one to three embryos that were considerably smaller than their siblings and 6% of the egg capsules at the same developed stage had one to four teratological embryos. Egg capsules laid down on the sea bottom showed an aggregated distribution pattern. The average developmental time was 57 ± 4 days. Protein and sugar concentration and pH of the intracapsular fluid decreased as embryo development progressed. Several proteins with different molecular weights were present in the intracapsular fluid during the entire intracapsular development.
format SER
author Luzzatto, D.C.
author_facet Luzzatto, D.C.
author_sort Luzzatto, D.C.
title The biology and ecology of the giant free egg capsules of adelomelon brasiliana lamarck, 1811 (gastropoda: Volutidae)
title_short The biology and ecology of the giant free egg capsules of adelomelon brasiliana lamarck, 1811 (gastropoda: Volutidae)
title_full The biology and ecology of the giant free egg capsules of adelomelon brasiliana lamarck, 1811 (gastropoda: Volutidae)
title_fullStr The biology and ecology of the giant free egg capsules of adelomelon brasiliana lamarck, 1811 (gastropoda: Volutidae)
title_full_unstemmed The biology and ecology of the giant free egg capsules of adelomelon brasiliana lamarck, 1811 (gastropoda: Volutidae)
title_sort biology and ecology of the giant free egg capsules of adelomelon brasiliana lamarck, 1811 (gastropoda: volutidae)
url http://hdl.handle.net/20.500.12110/paper_00762997_v49_n1_p107_Luzzatto
work_keys_str_mv AT luzzattodc thebiologyandecologyofthegiantfreeeggcapsulesofadelomelonbrasilianalamarck1811gastropodavolutidae
AT luzzattodc biologyandecologyofthegiantfreeeggcapsulesofadelomelonbrasilianalamarck1811gastropodavolutidae
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