Morphology and cardiac physiology are differentially affected by temperature in developing larvae of the marine fish mahi-mahi (Coryphaena hippurus)
Cardiovascular performance is altered by temperature in larval fishes, but how acute versus chronic temperature exposures independently affect cardiac morphology and physiology in the growing larva is poorly understood. Consequently, we investigated the influence of water temperature on cardiac plas...
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| Format: | Article |
| Language: | English |
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The Company of Biologists
2017-06-01
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| Series: | Biology Open |
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| Online Access: | http://bio.biologists.org/content/6/6/800 |
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| author | Prescilla Perrichon Christina Pasparakis Edward M. Mager John D. Stieglitz Daniel D. Benetti Martin Grosell Warren W. Burggren |
| author_facet | Prescilla Perrichon Christina Pasparakis Edward M. Mager John D. Stieglitz Daniel D. Benetti Martin Grosell Warren W. Burggren |
| author_sort | Prescilla Perrichon |
| collection | DOAJ |
| description | Cardiovascular performance is altered by temperature in larval fishes, but how acute versus chronic temperature exposures independently affect cardiac morphology and physiology in the growing larva is poorly understood. Consequently, we investigated the influence of water temperature on cardiac plasticity in developing mahi-mahi. Morphological (e.g. standard length, heart angle) and physiological cardiac variables (e.g. heart rate fH, stroke volume, cardiac output) were recorded under two conditions by imaging: (i) under acute temperature exposure where embryos were reared at 25°C up to 128 h post-fertilization (hpf) and then acutely exposed to 25 (rearing temperature), 27 and 30°C; and (ii) at two rearing (chronic) temperatures of 26 and 30°C and performed at 32 and 56 hpf. Chronic elevated temperature improved developmental time in mahi-mahi. Heart rates were 1.2–1.4-fold higher under exposure of elevated acute temperatures across development (Q10≥2.0). Q10 for heart rate in acute exposure was 1.8-fold higher compared to chronic exposure at 56 hpf. At same stage, stroke volume was temperature independent (Q10∼1.0). However, larvae displayed higher stroke volume later in stage. Cardiac output in developing mahi-mahi is mainly dictated by chronotropic rather than inotropic modulation, is differentially affected by temperature during development and is not linked to metabolic changes. |
| first_indexed | 2024-12-18T00:05:51Z |
| format | Article |
| id | doaj.art-01c8f3b1063e4cf7b57c59029b4c0e51 |
| institution | Directory Open Access Journal |
| issn | 2046-6390 |
| language | English |
| last_indexed | 2024-12-18T00:05:51Z |
| publishDate | 2017-06-01 |
| publisher | The Company of Biologists |
| record_format | Article |
| series | Biology Open |
| spelling | doaj.art-01c8f3b1063e4cf7b57c59029b4c0e512022-12-21T21:27:48ZengThe Company of BiologistsBiology Open2046-63902017-06-016680080910.1242/bio.025692025692Morphology and cardiac physiology are differentially affected by temperature in developing larvae of the marine fish mahi-mahi (Coryphaena hippurus)Prescilla Perrichon0Christina Pasparakis1Edward M. Mager2John D. Stieglitz3Daniel D. Benetti4Martin Grosell5Warren W. Burggren6 University of North Texas, Department of Biological Sciences, Denton, TX 76203, USA Division of Marine Biology and Ecology, University of Miami, Rosenstiel School of Marine and Atmospheric Science, Miami, FL 33149, USA University of North Texas, Department of Biological Sciences, Denton, TX 76203, USA Division of Marine Biology and Ecology, University of Miami, Rosenstiel School of Marine and Atmospheric Science, Miami, FL 33149, USA Division of Marine Biology and Ecology, University of Miami, Rosenstiel School of Marine and Atmospheric Science, Miami, FL 33149, USA Division of Marine Biology and Ecology, University of Miami, Rosenstiel School of Marine and Atmospheric Science, Miami, FL 33149, USA University of North Texas, Department of Biological Sciences, Denton, TX 76203, USA Cardiovascular performance is altered by temperature in larval fishes, but how acute versus chronic temperature exposures independently affect cardiac morphology and physiology in the growing larva is poorly understood. Consequently, we investigated the influence of water temperature on cardiac plasticity in developing mahi-mahi. Morphological (e.g. standard length, heart angle) and physiological cardiac variables (e.g. heart rate fH, stroke volume, cardiac output) were recorded under two conditions by imaging: (i) under acute temperature exposure where embryos were reared at 25°C up to 128 h post-fertilization (hpf) and then acutely exposed to 25 (rearing temperature), 27 and 30°C; and (ii) at two rearing (chronic) temperatures of 26 and 30°C and performed at 32 and 56 hpf. Chronic elevated temperature improved developmental time in mahi-mahi. Heart rates were 1.2–1.4-fold higher under exposure of elevated acute temperatures across development (Q10≥2.0). Q10 for heart rate in acute exposure was 1.8-fold higher compared to chronic exposure at 56 hpf. At same stage, stroke volume was temperature independent (Q10∼1.0). However, larvae displayed higher stroke volume later in stage. Cardiac output in developing mahi-mahi is mainly dictated by chronotropic rather than inotropic modulation, is differentially affected by temperature during development and is not linked to metabolic changes.http://bio.biologists.org/content/6/6/800Mahi-mahiDevelopmentHeart rateStroke volumeCardiac outputQ10 |
| spellingShingle | Prescilla Perrichon Christina Pasparakis Edward M. Mager John D. Stieglitz Daniel D. Benetti Martin Grosell Warren W. Burggren Morphology and cardiac physiology are differentially affected by temperature in developing larvae of the marine fish mahi-mahi (Coryphaena hippurus) Biology Open Mahi-mahi Development Heart rate Stroke volume Cardiac output Q10 |
| title | Morphology and cardiac physiology are differentially affected by temperature in developing larvae of the marine fish mahi-mahi (Coryphaena hippurus) |
| title_full | Morphology and cardiac physiology are differentially affected by temperature in developing larvae of the marine fish mahi-mahi (Coryphaena hippurus) |
| title_fullStr | Morphology and cardiac physiology are differentially affected by temperature in developing larvae of the marine fish mahi-mahi (Coryphaena hippurus) |
| title_full_unstemmed | Morphology and cardiac physiology are differentially affected by temperature in developing larvae of the marine fish mahi-mahi (Coryphaena hippurus) |
| title_short | Morphology and cardiac physiology are differentially affected by temperature in developing larvae of the marine fish mahi-mahi (Coryphaena hippurus) |
| title_sort | morphology and cardiac physiology are differentially affected by temperature in developing larvae of the marine fish mahi mahi coryphaena hippurus |
| topic | Mahi-mahi Development Heart rate Stroke volume Cardiac output Q10 |
| url | http://bio.biologists.org/content/6/6/800 |
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