Seasonal variation in the reproductive and larval performance of the winged pearl oyster Pteria sterna associated with anomalous environmental conditions

Seasonal variation in the reproductive and larval performance of the winged pearl oyster Pteria sterna associated with anomalous environmental conditions

The reproductive and larval performance of Pteria sterna associated with anomalous environmental factors was evaluated, testing the hypothesis that the transition from La Niña to El Niño in 2008–2009 affected the “normal” periods in which ripe broodstock are collected and larvae are reared in a hatc...

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主要な著者: Gómez-Robles, Eliana, Acosta-Salmón, Héctor, Mazón-Suástegui, José M, Saucedo, Pedro E
フォーマット: Online
言語:eng
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出版事項: Iniversidad Autónoma de Baja California 2023
オンライン･アクセス:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3353
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record_format ojs
institution Ciencias Marinas
collection OJS
language eng
spa
format Online
author Gómez-Robles, Eliana
Acosta-Salmón, Héctor
Mazón-Suástegui, José M
Saucedo, Pedro E
spellingShingle Gómez-Robles, Eliana
Acosta-Salmón, Héctor
Mazón-Suástegui, José M
Saucedo, Pedro E
Seasonal variation in the reproductive and larval performance of the winged pearl oyster Pteria sterna associated with anomalous environmental conditions
author_facet Gómez-Robles, Eliana
Acosta-Salmón, Héctor
Mazón-Suástegui, José M
Saucedo, Pedro E
author_sort Gómez-Robles, Eliana
title Seasonal variation in the reproductive and larval performance of the winged pearl oyster Pteria sterna associated with anomalous environmental conditions
title_short Seasonal variation in the reproductive and larval performance of the winged pearl oyster Pteria sterna associated with anomalous environmental conditions
title_full Seasonal variation in the reproductive and larval performance of the winged pearl oyster Pteria sterna associated with anomalous environmental conditions
title_fullStr Seasonal variation in the reproductive and larval performance of the winged pearl oyster Pteria sterna associated with anomalous environmental conditions
title_full_unstemmed Seasonal variation in the reproductive and larval performance of the winged pearl oyster Pteria sterna associated with anomalous environmental conditions
title_sort seasonal variation in the reproductive and larval performance of the winged pearl oyster pteria sterna associated with anomalous environmental conditions
description The reproductive and larval performance of Pteria sterna associated with anomalous environmental factors was evaluated, testing the hypothesis that the transition from La Niña to El Niño in 2008–2009 affected the “normal” periods in which ripe broodstock are collected and larvae are reared in a hatchery. Seasonal sampling included 2 reproductive periods (February and April 2009), 1 pre-reproductive period (November 2008), and 1 post-reproductive period (June 2009). Of the 40 oysters collected in each period, 20 were used for induced spawning and larval culture, while 20 were used to evaluate indices of reproductive performance. Water temperature, salinity, and seston content were monitored in each period. Sea surface temperature (SST) data associated with anomalous environmental conditions were obtained from the Aqua-MODIS satellite. Variations in SST affected reproductive performance more than larval performance in Pteria sterna. Spawning induction failed in November 2008 and succeeded in February, April, and June 2009, although only the larvae from April completed metamorphosis and settled, given the riper broodstock, larger oocytes, and favorable environmental conditions (21.80 °C; 31 mg·L–1 total seston; +0.50 °C SST). Positive SST anomalies (+0.50 to +1.10 °C) from August to December 2008 resulted in longer summer conditions that affected spawning in February 2009. In June 2009 (22.50 °C; 29.50 mg·L–1 total seston; +0.40 °C SST), when the percentages of ripe gonads and mature oocytes were small, the larvae were not viable, and few spat settled. In addition to collecting ripe broodstock in winter-spring for optimal larval and spat viability, we recommend including a brief conditioning period at the hatchery following the spawning peak and a second conditioning period in late autumn to promote nutrient recycling and natural gamete recovery.
publisher Iniversidad Autónoma de Baja California
publishDate 2023
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3353
_version_ 1792095483825487872
spelling oai:cienciasmarinas.com.mx:article-33532024-02-08T22:54:21Z Seasonal variation in the reproductive and larval performance of the winged pearl oyster Pteria sterna associated with anomalous environmental conditions Variaciones estacionales en el desempeño reproductivo y larvario de la concha nácar Pteria sterna asociadas con condiciones ambientales anómalas Gómez-Robles, Eliana Acosta-Salmón, Héctor Mazón-Suástegui, José M Saucedo, Pedro E aquaculture broodstock condition larval culture environmental conditions ENSO acuacultura condición de reproductores cultivo larvario factores ambientales ENSO The reproductive and larval performance of Pteria sterna associated with anomalous environmental factors was evaluated, testing the hypothesis that the transition from La Niña to El Niño in 2008–2009 affected the “normal” periods in which ripe broodstock are collected and larvae are reared in a hatchery. Seasonal sampling included 2 reproductive periods (February and April 2009), 1 pre-reproductive period (November 2008), and 1 post-reproductive period (June 2009). Of the 40 oysters collected in each period, 20 were used for induced spawning and larval culture, while 20 were used to evaluate indices of reproductive performance. Water temperature, salinity, and seston content were monitored in each period. Sea surface temperature (SST) data associated with anomalous environmental conditions were obtained from the Aqua-MODIS satellite. Variations in SST affected reproductive performance more than larval performance in Pteria sterna. Spawning induction failed in November 2008 and succeeded in February, April, and June 2009, although only the larvae from April completed metamorphosis and settled, given the riper broodstock, larger oocytes, and favorable environmental conditions (21.80 °C; 31 mg·L–1 total seston; +0.50 °C SST). Positive SST anomalies (+0.50 to +1.10 °C) from August to December 2008 resulted in longer summer conditions that affected spawning in February 2009. In June 2009 (22.50 °C; 29.50 mg·L–1 total seston; +0.40 °C SST), when the percentages of ripe gonads and mature oocytes were small, the larvae were not viable, and few spat settled. In addition to collecting ripe broodstock in winter-spring for optimal larval and spat viability, we recommend including a brief conditioning period at the hatchery following the spawning peak and a second conditioning period in late autumn to promote nutrient recycling and natural gamete recovery. Se estudió el desempeño reproductivo y larvario de Pteria sterna en relación a factores ambientales anómalos, hipotetizando que la transición entre los eventos de La Niña y El Niño 2008-2009 afectó los periodos “normales” para recolectar reproductores maduros y cultivar larvas en laboratorio. Se realizaron muestreos estacionales en 2 periodos reproductivos (febrero y abril 2009), 1 periodo pre-reproductivo (noviembre 2008) y 1 periodo post-reproductivo (junio 2009). De las 40 ostras recolectadas en cada periodo, 20 se utilizaron para evaluar el desove y cultivo larvario y 20 para determinar indicadores de condición reproductiva. La temperatura, salinidad y contenido de seston se monitorearon en cada periodo. Los datos de temperatura superficial del mar (TSM) asociados a condiciones ambientales anómalas se obtuvieron del satélite Aqua-MODIS. Las variaciones en la TSM afectaron más el desempeño reproductivo que el desempeño larvario de Pteria sterna. La inducción al desove falló en noviembre 2008 y fue exitosa en febrero, abril y junio 2009, aunque solo en abril las larvas completaron la metamorfosis y se fijaron, a partir de reproductores más maduros, ovocitos más grandes y condiciones ambientales favorables (21.80 °C; ~31 mg·L–1 seston total; +0.50 °C TSM). Las anomalías positivas de TSM (+0.50 a +1.10 °C) de agosto a diciembre 2008 favorecieron un verano más largo que afectó el desove de febrero 2009. En junio 2009 (22.50 °C, 29.5 mg·L–1 seston total, +0.40 °C TSM), cuando los porcentajes de gónadas y ovocitos maduros eran bajos, las larvas no fueron viables y pocas semillas se fijaron. Además de recolectar reproductores maduros en invierno-primavera para una viabilidad óptima de las larvas y semillas, recomendamos incluir un breve periodo de acondicionamiento en el laboratorio después del pico de desove y un segundo a finales del otoño para promover el reciclaje de nutrientes y la recuperación natural de gametos. Iniversidad Autónoma de Baja California 2023-06-26 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf text/xml text/xml https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3353 10.7773/cm.y2023.3353 Ciencias Marinas; Vol. 49 (2023) Ciencias Marinas; Vol. 49 (2023) 2395-9053 0185-3880 eng spa https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3353/420420737 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3353/420420870 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3353/420420871 Copyright (c) 2023 Eliana Gómez-Robles, Héctor Acosta-Salmón, José M Mazón-Suástegui, Pedro E Saucedo https://creativecommons.org/licenses/by/4.0

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