Oxygen consumption in trilobite larvae of the mangrove horseshoe crab (Carcinoscorpius rotundicauda; Latreille, 1802): effect of temperature, salinity, pH, and light–dark cycle

© 2014, The Author(s). Carcinoscorpius rotundicauda is one of the four extant species of horseshoe crab, occurring only in Asia: around India, Indonesia, Malaysia, Philippines, Singapore, Thailand and Hong Kong. Virtually nothing is known about the physiology of this Asian species. In the present st...

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Main Authors: Thekkeparambil Chandrabose Srijaya, Padmaja Jayaprasad Pradeep, Anuar Hassan, Anil Chatterji, Faizah Shaharom, Andrew Jeffs
Other Authors: Universiti Malaysia Terengganu
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Published: 2018
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Online Access:https://repository.li.mahidol.ac.th/handle/123456789/33116
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spelling th-mahidol.331162018-11-09T08:47:09Z Oxygen consumption in trilobite larvae of the mangrove horseshoe crab (Carcinoscorpius rotundicauda; Latreille, 1802): effect of temperature, salinity, pH, and light–dark cycle Thekkeparambil Chandrabose Srijaya Padmaja Jayaprasad Pradeep Anuar Hassan Anil Chatterji Faizah Shaharom Andrew Jeffs Universiti Malaysia Terengganu University of Malaya Mahidol University University of Auckland Agricultural and Biological Sciences © 2014, The Author(s). Carcinoscorpius rotundicauda is one of the four extant species of horseshoe crab, occurring only in Asia: around India, Indonesia, Malaysia, Philippines, Singapore, Thailand and Hong Kong. Virtually nothing is known about the physiology of this Asian species. In the present study, the respiratory physiology in terms of oxygen consumption rate of the trilobite larvae of C. rotundicauda was evaluated under laboratory conditions. The trilobite larvae were exposed to different levels of temperature (10, 20, 30 and 40 °C), salinity (10, 20, 30 and 40 ppt), pH (5, 6, 7, 8 and 9) and dark–light conditions for a period of 12 h. Effect of temperature on oxygen consumption in trilobite larvae was not so significant among all the temperatures tested. However, both 10 and 40 °C temperature showed comparatively high rate of oxygen consumption at the initial 4 h of experiment. More or less consistent oxygen consumption pattern observed at 20 and 30 °C temperature suggested 20–30 °C as the best temperature range for rearing trilobite larvae. Trilobite larvae revealed enormous tolerance to temperature and indicated that the temperature is not critical in terms of respiration. The trend in oxygen consumption was more or less uniform at all salinities tested indicating the insignificant influence of salinity on respiration. Though not significant, the oxygen consumption trend was more consistent at 20 ppt as compared to other salinities and thus could be considered as the most suitable salinity for rearing trilobite larvae. There was a positive relationship between oxygen consumption rate and the various seawater water pH tested with trilobite larvae. Maximum oxygen consumption was recorded between pH 7 and 9 at the initial hours of the experiment and the overall trend suggests that the larvae preferred slightly acidic conditions. Although the larvae showed higher oxygen consumption under light, in the overall analysis of the data the light–dark condition did not have a statistically significant influence. However, more consistent oxygen consumption pattern and swimming activity in the dark condition as compared to light condition during the 12 h of experiment revealed that the larvae have active nocturnal behaviour. 2018-11-09T01:47:09Z 2018-11-09T01:47:09Z 2014-01-01 Article International Aquatic Research. Vol.6, No.1 (2014), 1-15 10.1007/s40071-014-0060-z 20086970 20084935 2-s2.0-84920474128 https://repository.li.mahidol.ac.th/handle/123456789/33116 Mahidol University SCOPUS https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84920474128&origin=inward
institution Mahidol University
building Mahidol University Library
continent Asia
country Thailand
Thailand
content_provider Mahidol University Library
collection Mahidol University Institutional Repository
topic Agricultural and Biological Sciences
spellingShingle Agricultural and Biological Sciences
Thekkeparambil Chandrabose Srijaya
Padmaja Jayaprasad Pradeep
Anuar Hassan
Anil Chatterji
Faizah Shaharom
Andrew Jeffs
Oxygen consumption in trilobite larvae of the mangrove horseshoe crab (Carcinoscorpius rotundicauda; Latreille, 1802): effect of temperature, salinity, pH, and light–dark cycle
description © 2014, The Author(s). Carcinoscorpius rotundicauda is one of the four extant species of horseshoe crab, occurring only in Asia: around India, Indonesia, Malaysia, Philippines, Singapore, Thailand and Hong Kong. Virtually nothing is known about the physiology of this Asian species. In the present study, the respiratory physiology in terms of oxygen consumption rate of the trilobite larvae of C. rotundicauda was evaluated under laboratory conditions. The trilobite larvae were exposed to different levels of temperature (10, 20, 30 and 40 °C), salinity (10, 20, 30 and 40 ppt), pH (5, 6, 7, 8 and 9) and dark–light conditions for a period of 12 h. Effect of temperature on oxygen consumption in trilobite larvae was not so significant among all the temperatures tested. However, both 10 and 40 °C temperature showed comparatively high rate of oxygen consumption at the initial 4 h of experiment. More or less consistent oxygen consumption pattern observed at 20 and 30 °C temperature suggested 20–30 °C as the best temperature range for rearing trilobite larvae. Trilobite larvae revealed enormous tolerance to temperature and indicated that the temperature is not critical in terms of respiration. The trend in oxygen consumption was more or less uniform at all salinities tested indicating the insignificant influence of salinity on respiration. Though not significant, the oxygen consumption trend was more consistent at 20 ppt as compared to other salinities and thus could be considered as the most suitable salinity for rearing trilobite larvae. There was a positive relationship between oxygen consumption rate and the various seawater water pH tested with trilobite larvae. Maximum oxygen consumption was recorded between pH 7 and 9 at the initial hours of the experiment and the overall trend suggests that the larvae preferred slightly acidic conditions. Although the larvae showed higher oxygen consumption under light, in the overall analysis of the data the light–dark condition did not have a statistically significant influence. However, more consistent oxygen consumption pattern and swimming activity in the dark condition as compared to light condition during the 12 h of experiment revealed that the larvae have active nocturnal behaviour.
author2 Universiti Malaysia Terengganu
author_facet Universiti Malaysia Terengganu
Thekkeparambil Chandrabose Srijaya
Padmaja Jayaprasad Pradeep
Anuar Hassan
Anil Chatterji
Faizah Shaharom
Andrew Jeffs
format Article
author Thekkeparambil Chandrabose Srijaya
Padmaja Jayaprasad Pradeep
Anuar Hassan
Anil Chatterji
Faizah Shaharom
Andrew Jeffs
author_sort Thekkeparambil Chandrabose Srijaya
title Oxygen consumption in trilobite larvae of the mangrove horseshoe crab (Carcinoscorpius rotundicauda; Latreille, 1802): effect of temperature, salinity, pH, and light–dark cycle
title_short Oxygen consumption in trilobite larvae of the mangrove horseshoe crab (Carcinoscorpius rotundicauda; Latreille, 1802): effect of temperature, salinity, pH, and light–dark cycle
title_full Oxygen consumption in trilobite larvae of the mangrove horseshoe crab (Carcinoscorpius rotundicauda; Latreille, 1802): effect of temperature, salinity, pH, and light–dark cycle
title_fullStr Oxygen consumption in trilobite larvae of the mangrove horseshoe crab (Carcinoscorpius rotundicauda; Latreille, 1802): effect of temperature, salinity, pH, and light–dark cycle
title_full_unstemmed Oxygen consumption in trilobite larvae of the mangrove horseshoe crab (Carcinoscorpius rotundicauda; Latreille, 1802): effect of temperature, salinity, pH, and light–dark cycle
title_sort oxygen consumption in trilobite larvae of the mangrove horseshoe crab (carcinoscorpius rotundicauda; latreille, 1802): effect of temperature, salinity, ph, and light–dark cycle
publishDate 2018
url https://repository.li.mahidol.ac.th/handle/123456789/33116
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