Oxygen consumption, ammonium excretion and osmoregulatory capacity of Litopenaeus stylirostris (Stimpson) exposed to different combinations of temperature and salinity
The physiological responses of the blue shrimp were determined by exposing the organisms to temperatures of 23ºC, 28ºC and 33ºC, and salinities of 10, 15, 20, 25, 30, 35 and 40‰. Oxygen consumption of Litopenaeus stylirostris exposed to experimental salinities increased in direct relationship with...
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| Format: | Article |
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Universidad Autónoma de Baja California
2004-03-01
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| Series: | Ciencias Marinas |
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| Online Access: | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/328 |
| _version_ | 1797279427137110016 |
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| author | Ana Denisse Re Fernando Díaz Elozabeth Sierra Silvia Gómez-Jiménez |
| author_facet | Ana Denisse Re Fernando Díaz Elozabeth Sierra Silvia Gómez-Jiménez |
| author_sort | Ana Denisse Re |
| collection | DOAJ |
| description |
The physiological responses of the blue shrimp were determined by exposing the organisms to temperatures of 23ºC, 28ºC and 33ºC, and salinities of 10, 15, 20, 25, 30, 35 and 40‰. Oxygen consumption of Litopenaeus stylirostris exposed to experimental salinities increased in direct relationship with temperature, even though at 28ºC the metabolic rate was steady. The ammonium excretion rate in juvenile shrimp acclimated at 23ºC and 33ºC was related to the pattern of osmoregulation, increasing when the shrimp were hyper-regulators and decreasing when they were hypo-regulators. The ammonium excretion rate remained constant in shrimp kept at 28ºC. The osmoregulatory capacity of the juveniles indicated that they were hypo-regulators and hyper-regulators in salinities above and below the isosmotic point, this capacity decreasing in organisms kept at 33ºC and exposed to higher salinities. The isosmotic point obtained ranged from 676.8 to 700.7 mmol kg–1 (23.7–24.6‰). The values of the slopes between the osmotic concentration of the external medium and the hemolymph of shrimp acclimated at 23ºC, 28ºC and 33ºC were 0.25, 0.17 and 0.3, respectively; the lowest value was obtained for juveniles maintained at 28ºC, being strong regulators in this condition. To optimize the culture of L. stylirostris under controlled conditions, we propose that it be cultivated in salinities of 25‰ and temperatures of 28ºC, considered the optimum conditions because in these environments the organisms are free of stress and their growth therefore increases.
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| first_indexed | 2024-03-07T16:25:10Z |
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| issn | 0185-3880 2395-9053 |
| language | English |
| last_indexed | 2024-03-07T16:25:10Z |
| publishDate | 2004-03-01 |
| publisher | Universidad Autónoma de Baja California |
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| series | Ciencias Marinas |
| spelling | doaj.art-e61392b0983340319ff147535ee9e29f2024-03-03T18:37:47ZengUniversidad Autónoma de Baja CaliforniaCiencias Marinas0185-38802395-90532004-03-0130310.7773/cm.v30i3.328Oxygen consumption, ammonium excretion and osmoregulatory capacity of Litopenaeus stylirostris (Stimpson) exposed to different combinations of temperature and salinityAna Denisse Re0Fernando Díaz1Elozabeth Sierra2Silvia Gómez-Jiménez3Centro de Investigación Científica y de Educación Superior de EnsenadaCentro de Investigación Científica y de Educación Superior de EnsenadaCentro de Investigación Científica y de Educación Superior de EnsenadaCentro de Investigación en Alimentación y Desarrollo The physiological responses of the blue shrimp were determined by exposing the organisms to temperatures of 23ºC, 28ºC and 33ºC, and salinities of 10, 15, 20, 25, 30, 35 and 40‰. Oxygen consumption of Litopenaeus stylirostris exposed to experimental salinities increased in direct relationship with temperature, even though at 28ºC the metabolic rate was steady. The ammonium excretion rate in juvenile shrimp acclimated at 23ºC and 33ºC was related to the pattern of osmoregulation, increasing when the shrimp were hyper-regulators and decreasing when they were hypo-regulators. The ammonium excretion rate remained constant in shrimp kept at 28ºC. The osmoregulatory capacity of the juveniles indicated that they were hypo-regulators and hyper-regulators in salinities above and below the isosmotic point, this capacity decreasing in organisms kept at 33ºC and exposed to higher salinities. The isosmotic point obtained ranged from 676.8 to 700.7 mmol kg–1 (23.7–24.6‰). The values of the slopes between the osmotic concentration of the external medium and the hemolymph of shrimp acclimated at 23ºC, 28ºC and 33ºC were 0.25, 0.17 and 0.3, respectively; the lowest value was obtained for juveniles maintained at 28ºC, being strong regulators in this condition. To optimize the culture of L. stylirostris under controlled conditions, we propose that it be cultivated in salinities of 25‰ and temperatures of 28ºC, considered the optimum conditions because in these environments the organisms are free of stress and their growth therefore increases. https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/328oxygen consumptionammonium excretionosmoregulatory capacitytemperature and salinityLitopenaeus stylirostris |
| spellingShingle | Ana Denisse Re Fernando Díaz Elozabeth Sierra Silvia Gómez-Jiménez Oxygen consumption, ammonium excretion and osmoregulatory capacity of Litopenaeus stylirostris (Stimpson) exposed to different combinations of temperature and salinity Ciencias Marinas oxygen consumption ammonium excretion osmoregulatory capacity temperature and salinity Litopenaeus stylirostris |
| title | Oxygen consumption, ammonium excretion and osmoregulatory capacity of Litopenaeus stylirostris (Stimpson) exposed to different combinations of temperature and salinity |
| title_full | Oxygen consumption, ammonium excretion and osmoregulatory capacity of Litopenaeus stylirostris (Stimpson) exposed to different combinations of temperature and salinity |
| title_fullStr | Oxygen consumption, ammonium excretion and osmoregulatory capacity of Litopenaeus stylirostris (Stimpson) exposed to different combinations of temperature and salinity |
| title_full_unstemmed | Oxygen consumption, ammonium excretion and osmoregulatory capacity of Litopenaeus stylirostris (Stimpson) exposed to different combinations of temperature and salinity |
| title_short | Oxygen consumption, ammonium excretion and osmoregulatory capacity of Litopenaeus stylirostris (Stimpson) exposed to different combinations of temperature and salinity |
| title_sort | oxygen consumption ammonium excretion and osmoregulatory capacity of litopenaeus stylirostris stimpson exposed to different combinations of temperature and salinity |
| topic | oxygen consumption ammonium excretion osmoregulatory capacity temperature and salinity Litopenaeus stylirostris |
| url | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/328 |
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