The effect of salinity on the oxygen consumption of two intertidal crustaceans

Huni, Atig A.D; Aravindan, C M

doi:10.1016/0300-9629(85)90921-1

Cited by 32 publications

(5 citation statements)

References 20 publications

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“…Tidally influenced salinity cycles are very common in the mangrove eco-system and estuaries; thus it is important to understand the effect that salinity cycle has on the physiology of marine animals inhabiting in such environment. Any deviation of the salinity from its ambient level can disrupt the osmotic balance in many aquatic organisms and for readjusting the osmotic concentration they may have to exchange a considerable quantity of energy (Huni and Aravindan 1985). The trilobite larvae of horseshoe crab showed a considerable degree of respiratory independence since they were able to maintain their oxygen consumption rates approximately constant over a wide range of salinity tested in the present study.…”

Section: Discussionmentioning

confidence: 61%

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

et al. 2014

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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

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Section: Discussionmentioning

confidence: 61%

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

et al. 2014

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“…Osmoregulation in response to salinity stress has previously been observed in marine crustaceans ( Charmantier & Charmantier-Daures, 1991 ). Marine crustaceans are exposed to salinity fluxes through tides and have highly varied responses to these stressors ( Huni & Aravindan, 1985 ); for example, growth and morphology are shown to be affected by such environmental stressors ( López et al, 2010 ). By contrast, halophylic D. exilis shows a hyper-osmoconformer physiological response to salinity stress as well as a delayed maturity age and reduced fertility.…”

Section: Discussionmentioning

confidence: 99%

Novel resilience in response to revitalisation after exposure to lethal salinity causes differential reproductive success in an extremely plastic organism

Khudr¹,

Purkiss²,

Kalkuhl³

et al. 2018

PeerJ

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Phenotypic plasticity is central to an organism’s ability to adapt to variable environmental conditions. For aquatic organisms, exposure to elevated salt levels poses a challenge and organisms may fail to tolerate or survive much higher levels short-term. Here we demonstrate, for the first time, in a laboratory study of Daphnia magna that exposure to levels of salinity higher than those previously shown to lead to apparent death (paralysis) can be reversed following a transfer to optimal conditions. We established experimental populations from one clone of D. magna, each with five replicates, that were exposed to different short periods of three different lethal levels of salinity (12.27 PSU [45, 60, 90 and 120 min], 18.24 PSU [45, 60 and 90 min] and 24.22 PSU [45, 60 and 90 min]). In all populations, all individuals were paralysed at the end of their exposure, usually classified in the literature as dead. Subsequently, all individuals were transferred to optimal conditions. However, after the transfer, a proportion of the individuals not only came back from the verge of death (i.e. were revitalised), but also showed afterwards differential reproductive success over a period of 20 days, depending on the level and the length of exposure before revitalisation. Both exposure level and time had an overall negative effect on population size that differed across all treatments. Revitalisation occurred within an hour after the transfer to optimal conditions for 18.24 PSU but took 14–16 h for 12.27 PSU. There was no instantaneous revitalisation nor was there any revitalisation after 16 h no matter how long the paralysed Daphnia individuals were left in the optimal conditions. Our findings cast new light on resilience in cladocerans and suggest that abrupt environmental change can reveal novel plastic responses to extreme conditions.

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“…Changes in metabolic rate in response to salinity changes may also reflect changes in the energy expended for ion and osmoregulation (Huni and Aravindan, 1985;McNamara et al, 1986). Gasca et al (1991) noted that oxygen consumption can be altered by the nutritional status of the animal.…”

Section: Introductionmentioning

confidence: 98%

The effect of salinity on oxygen consumption and osmoregulation ofMacrobrachium tenellum

Aguilar

Dı́az

Bückle

1998

Marine and Freshwater Behaviour and Physiology

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A study was made of the effect of salinities of 0, 3, 6, 9, 12, 17, 22 and 27%o on the oxygen consumption and osmoregulation of Macrobrachium tenellum. The metabolism salinity curve is "U" shaped although in freshwater the metabolic rate reduces by 38%. The oxygen consumption observed over this range of salinities corresponds to Type II of Kinne (1971). In M. tenellum, osmotic concentration of haemolymph remains constant around 531 mmol Kg -1 which means that this species is a strong hyper-hypo osmoregulator. The isosmotic point was 533 mmol Kg -1 which suggests that this species has only recently invaded the freshwater environment.

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The effect of salinity on the oxygen consumption of two intertidal crustaceans

Cited by 32 publications

References 20 publications

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

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

Novel resilience in response to revitalisation after exposure to lethal salinity causes differential reproductive success in an extremely plastic organism

The effect of salinity on oxygen consumption and osmoregulation ofMacrobrachium tenellum

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