Spawning and early development of captive yellowfin tuna (Thunnus albacares)
In this study we describe the courtship and spawning behaviors of captive yellowfin tuna (Thunnus albacares), their spawning periodicity, the influence of physical and biological factors on spawning and hatching, and egg and early-larval development of this species at the Achotines Laboratory, Republic of Panama, during October 1996 through March 2000. Spawning occurred almost daily over extended periods and at water temperatures from 23.3° to 29.7°C. Water temperature appeared to be the main exogenous factor controlling the occurrence and timing of spawning. Courtship and spawning behaviors were ritualized and consistent among three groups of broodstock over 3.5 years. For any date, the time of day of spawning (range: 1330 to 2130 h) was predictable from mean daily water temperature, and 95% of hatching occurred the next day between 1500 and 1900 h. We estimated that females at first spawning averaged 1.6−2.0 years of age. Over short time periods (<1 month), spawning females increased their egg production from 30% to 234% in response to shortterm increases in daily food ration of 9% to 33%. Egg diameter, notochord length (NL) at hatching, NL at first feeding, and dry weights of these stages were estimated. Water temperature was significantly, inversely related to egg size, egg-stage duration, larval size at hatching, and yolksac larval duration.
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2007
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Subjects: | Biology, Ecology, Fisheries, |
Online Access: | http://hdl.handle.net/1834/25539 |
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dig-aquadocs-1834-255392021-06-29T02:17:32Z Spawning and early development of captive yellowfin tuna (Thunnus albacares) Margulies, Daniel Sutter, Jenny M. Hunt , Sharon L. Olson, Robert J. Scholey, Vernon P. Wexler, Jeanne B. Nakazawa, Akio Biology Ecology Fisheries In this study we describe the courtship and spawning behaviors of captive yellowfin tuna (Thunnus albacares), their spawning periodicity, the influence of physical and biological factors on spawning and hatching, and egg and early-larval development of this species at the Achotines Laboratory, Republic of Panama, during October 1996 through March 2000. Spawning occurred almost daily over extended periods and at water temperatures from 23.3° to 29.7°C. Water temperature appeared to be the main exogenous factor controlling the occurrence and timing of spawning. Courtship and spawning behaviors were ritualized and consistent among three groups of broodstock over 3.5 years. For any date, the time of day of spawning (range: 1330 to 2130 h) was predictable from mean daily water temperature, and 95% of hatching occurred the next day between 1500 and 1900 h. We estimated that females at first spawning averaged 1.6−2.0 years of age. Over short time periods (<1 month), spawning females increased their egg production from 30% to 234% in response to shortterm increases in daily food ration of 9% to 33%. Egg diameter, notochord length (NL) at hatching, NL at first feeding, and dry weights of these stages were estimated. Water temperature was significantly, inversely related to egg size, egg-stage duration, larval size at hatching, and yolksac larval duration. 2021-06-24T16:20:50Z 2021-06-24T16:20:50Z 2007 article TRUE 0090-0656 http://hdl.handle.net/1834/25539 en http://fishbull.noaa.gov/1052/margulies.pdf application/pdf application/pdf 249-265 http://aquaticcommons.org/id/eprint/8895 403 2012-06-18 09:33:08 8895 United States National Marine Fisheries Service |
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Biology Ecology Fisheries Biology Ecology Fisheries Margulies, Daniel Sutter, Jenny M. Hunt , Sharon L. Olson, Robert J. Scholey, Vernon P. Wexler, Jeanne B. Nakazawa, Akio Spawning and early development of captive yellowfin tuna (Thunnus albacares) |
description |
In this study we describe the courtship and spawning behaviors of captive yellowfin tuna (Thunnus albacares), their spawning periodicity, the influence of physical and biological factors on spawning and hatching, and egg and early-larval development of this species at the Achotines Laboratory, Republic of Panama, during October 1996 through March 2000. Spawning occurred almost daily over extended periods and at water temperatures from 23.3° to 29.7°C. Water temperature appeared to be the main exogenous factor controlling the occurrence and timing of spawning. Courtship and spawning behaviors were ritualized and consistent among three groups of broodstock over 3.5 years. For any date, the time of day of spawning (range: 1330 to 2130 h) was predictable from mean daily water temperature, and 95% of hatching occurred the next day between 1500 and 1900 h. We estimated that females at first spawning averaged 1.6−2.0 years of age. Over short time periods (<1 month), spawning females increased their egg production from 30% to 234% in response to shortterm increases in daily food ration of 9% to 33%. Egg diameter, notochord length (NL) at hatching, NL at first feeding, and dry weights of these stages were estimated. Water temperature was significantly, inversely related to egg size, egg-stage duration, larval size at hatching, and yolksac larval duration. |
format |
article |
topic_facet |
Biology Ecology Fisheries |
author |
Margulies, Daniel Sutter, Jenny M. Hunt , Sharon L. Olson, Robert J. Scholey, Vernon P. Wexler, Jeanne B. Nakazawa, Akio |
author_facet |
Margulies, Daniel Sutter, Jenny M. Hunt , Sharon L. Olson, Robert J. Scholey, Vernon P. Wexler, Jeanne B. Nakazawa, Akio |
author_sort |
Margulies, Daniel |
title |
Spawning and early development of captive yellowfin tuna (Thunnus albacares) |
title_short |
Spawning and early development of captive yellowfin tuna (Thunnus albacares) |
title_full |
Spawning and early development of captive yellowfin tuna (Thunnus albacares) |
title_fullStr |
Spawning and early development of captive yellowfin tuna (Thunnus albacares) |
title_full_unstemmed |
Spawning and early development of captive yellowfin tuna (Thunnus albacares) |
title_sort |
spawning and early development of captive yellowfin tuna (thunnus albacares) |
publishDate |
2007 |
url |
http://hdl.handle.net/1834/25539 |
work_keys_str_mv |
AT marguliesdaniel spawningandearlydevelopmentofcaptiveyellowfintunathunnusalbacares AT sutterjennym spawningandearlydevelopmentofcaptiveyellowfintunathunnusalbacares AT huntsharonl spawningandearlydevelopmentofcaptiveyellowfintunathunnusalbacares AT olsonrobertj spawningandearlydevelopmentofcaptiveyellowfintunathunnusalbacares AT scholeyvernonp spawningandearlydevelopmentofcaptiveyellowfintunathunnusalbacares AT wexlerjeanneb spawningandearlydevelopmentofcaptiveyellowfintunathunnusalbacares AT nakazawaakio spawningandearlydevelopmentofcaptiveyellowfintunathunnusalbacares |
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