Effects of temperature, light level, photoperiod, and ammonium concentration on Pyropia leucosticta (Bangiales, Rhodophyta) from the Northwest Atlantic
Seaweed aquaculture in the Northwest Atlantic is a growing industry that is currently based on winter-spring kelp production. Aquaculture of Pyropia leucosticta, a species of economically valuable nori, could provide a spring-summer crop and diversify the industry. The objectives of this study were...
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ftuninhampshire:oai:scholars.unh.edu:nhaes-1387 2023-05-15T17:45:30+02:00 Effects of temperature, light level, photoperiod, and ammonium concentration on Pyropia leucosticta (Bangiales, Rhodophyta) from the Northwest Atlantic Green, Lindsay A. Neefus, Christopher D. 2015-06-01T07:00:00Z https://scholars.unh.edu/nhaes/387 https://link.springer.com/article/10.1007/s10811-014-0421-4 unknown University of New Hampshire Scholars' Repository https://scholars.unh.edu/nhaes/387 https://link.springer.com/article/10.1007/s10811-014-0421-4 Copyright © Springer Science|Business Media Dordrecht 2014 New Hampshire Agricultural Experiment Station Publications Pyropia leucosticta Seaweed aquaculture Physiology Life history Mariculture text 2015 ftuninhampshire 2023-01-30T21:39:11Z Seaweed aquaculture in the Northwest Atlantic is a growing industry that is currently based on winter-spring kelp production. Aquaculture of Pyropia leucosticta, a species of economically valuable nori, could provide a spring-summer crop and diversify the industry. The objectives of this study were to determine the optimum conditions for the production of the foliose blade phase and the conditions for advancement from the microscopic conchocelis to the foliose blade phase of P. leucosticta. Foliose blades were grown under a matrix of temperatures (10, 15, and 20 °C), photoperiods (8:16, 12:12, and 16:8 L:D), and light levels (30, 60, 110, and 250 μmol photons m−2 s−1) for a period of 1 month. Free-living conchocelis was grown under a matrix of temperatures (10, 15, and 20 °C), photoperiods (8:16, 12:12, and 16:8 L:D), and ammonium concentrations (20 and 500 μM) for 8–12 weeks. Blades grew optimally at 10 to 15 °C, ≥110 μmol photons m−2 s−1 and ≥12 h of light in the day, with growth rates of over 18 % day−1 recorded. Phycobilin content of blades significantly decreased with increasing day length, while protein content significantly decreased with increasing light level. Conchospore release and germination was observed after approximately 40 days under all tested photoperiods, temperatures, and ammonium concentrations and none of these treatments significantly affected the time until germination. Overall, this study provides important background information required for the establishment of Pyropia leucosticta aquaculture in the Northwest Atlantic. Text Northwest Atlantic University of New Hampshire: Scholars Repository Nori ENVELOPE(72.382,72.382,66.153,66.153) |
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collection |
University of New Hampshire: Scholars Repository |
op_collection_id |
ftuninhampshire |
language |
unknown |
topic |
Pyropia leucosticta Seaweed aquaculture Physiology Life history Mariculture |
spellingShingle |
Pyropia leucosticta Seaweed aquaculture Physiology Life history Mariculture Green, Lindsay A. Neefus, Christopher D. Effects of temperature, light level, photoperiod, and ammonium concentration on Pyropia leucosticta (Bangiales, Rhodophyta) from the Northwest Atlantic |
topic_facet |
Pyropia leucosticta Seaweed aquaculture Physiology Life history Mariculture |
description |
Seaweed aquaculture in the Northwest Atlantic is a growing industry that is currently based on winter-spring kelp production. Aquaculture of Pyropia leucosticta, a species of economically valuable nori, could provide a spring-summer crop and diversify the industry. The objectives of this study were to determine the optimum conditions for the production of the foliose blade phase and the conditions for advancement from the microscopic conchocelis to the foliose blade phase of P. leucosticta. Foliose blades were grown under a matrix of temperatures (10, 15, and 20 °C), photoperiods (8:16, 12:12, and 16:8 L:D), and light levels (30, 60, 110, and 250 μmol photons m−2 s−1) for a period of 1 month. Free-living conchocelis was grown under a matrix of temperatures (10, 15, and 20 °C), photoperiods (8:16, 12:12, and 16:8 L:D), and ammonium concentrations (20 and 500 μM) for 8–12 weeks. Blades grew optimally at 10 to 15 °C, ≥110 μmol photons m−2 s−1 and ≥12 h of light in the day, with growth rates of over 18 % day−1 recorded. Phycobilin content of blades significantly decreased with increasing day length, while protein content significantly decreased with increasing light level. Conchospore release and germination was observed after approximately 40 days under all tested photoperiods, temperatures, and ammonium concentrations and none of these treatments significantly affected the time until germination. Overall, this study provides important background information required for the establishment of Pyropia leucosticta aquaculture in the Northwest Atlantic. |
format |
Text |
author |
Green, Lindsay A. Neefus, Christopher D. |
author_facet |
Green, Lindsay A. Neefus, Christopher D. |
author_sort |
Green, Lindsay A. |
title |
Effects of temperature, light level, photoperiod, and ammonium concentration on Pyropia leucosticta (Bangiales, Rhodophyta) from the Northwest Atlantic |
title_short |
Effects of temperature, light level, photoperiod, and ammonium concentration on Pyropia leucosticta (Bangiales, Rhodophyta) from the Northwest Atlantic |
title_full |
Effects of temperature, light level, photoperiod, and ammonium concentration on Pyropia leucosticta (Bangiales, Rhodophyta) from the Northwest Atlantic |
title_fullStr |
Effects of temperature, light level, photoperiod, and ammonium concentration on Pyropia leucosticta (Bangiales, Rhodophyta) from the Northwest Atlantic |
title_full_unstemmed |
Effects of temperature, light level, photoperiod, and ammonium concentration on Pyropia leucosticta (Bangiales, Rhodophyta) from the Northwest Atlantic |
title_sort |
effects of temperature, light level, photoperiod, and ammonium concentration on pyropia leucosticta (bangiales, rhodophyta) from the northwest atlantic |
publisher |
University of New Hampshire Scholars' Repository |
publishDate |
2015 |
url |
https://scholars.unh.edu/nhaes/387 https://link.springer.com/article/10.1007/s10811-014-0421-4 |
long_lat |
ENVELOPE(72.382,72.382,66.153,66.153) |
geographic |
Nori |
geographic_facet |
Nori |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_source |
New Hampshire Agricultural Experiment Station Publications |
op_relation |
https://scholars.unh.edu/nhaes/387 https://link.springer.com/article/10.1007/s10811-014-0421-4 |
op_rights |
Copyright © Springer Science|Business Media Dordrecht 2014 |
_version_ |
1766148539816083456 |