Osmotic Regulation in Crustaceans

Péqueux, A.

doi:10.2307/1549010

Cited by 600 publications

(546 citation statements)

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“…The maintenance of a stable cellular composition is achieved through ion-regulation strategies (for review see Péqueux, 1995). In coastal and estuarine waters, changes in salinity play therefore a central role for the survival and growth of planktonic larvae and other invertebrates, as well as fish (Kinne, 1971).…”

Section: Introductionmentioning

confidence: 99%

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Effects of osmotic stress on crustacean larval growth and protein and lipid levels are related to life-histories: The genus Armases as a model

Torres

Giménez

Anger

2007

Comparative Biochemistry and Physiology Part B: Biochemistry an

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In the larval stages of three euryhaline species of the genus Armases, we tested if changes in biomass (dry mass, W; protein; lipid) under hyposmotic stress were related to their salinity tolerance, capabilities of osmoregulation, and migration patterns. As model species, we compared Armases miersii, which breeds in supratidal rock pools, the riverine crab Armases roberti (showing a larval export strategy), and Armases ricordi, whose larvae probably develop in coastal marine waters. At each stage, larvae were exposed to different salinities (selected according to previous information on larval survival; range: 5‰-32‰ for A. miersii, 10‰-32‰ for A. roberti, and 15‰-32‰ for A. ricordi). Biomass was measured in early postmoult and intermoult. The larvae of the strongly osmoregulating species A. miersii, which develop in habitats with highly variable salinity conditions, showed the smallest variations in biomass. The effect on A. roberti varied during its ontogeny: the Zoea I and the Megalopa, which carry out downstream and upstream migrations, respectively, showed lower biomass variations than the intermediate zoeal instars, which develop in coastal waters. The larvae of A. ricordi showed generally the highest variations in biomass, reflecting poor adaptation to salinity variations. In addition, a common pattern was found for these estuarine species: the maximum of biomass shifted during ontogeny from 32‰ to 25‰, reflecting changes of the iso-osmotic point. The ontogeny of osmoregulation reflected ontogenetic migration patterns, which allow for avoiding detrimental effects of salinity variations.

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Section: Introductionmentioning

confidence: 99%

“…Cancer pagurus, Hyas araneus) are generally osmoconformers, which are restricted to habitats with little variability in salinity (Péqueux, 1995). Many other crustaceans, however, can live in environments with variable salinity conditions.…”

Section: Introductionmentioning

confidence: 99%

Effects of osmotic stress on crustacean larval growth and protein and lipid levels are related to life-histories: The genus Armases as a model

Torres

Giménez

Anger

2007

Comparative Biochemistry and Physiology Part B: Biochemistry an

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“…In addition, penaeid marine shrimps are hyper-hypo-regulators (Péqueux 1995, Freire et al 2008b, as opposed to palaemonid shrimps, which are essentially hyper-regulators, as already mentioned. In the results of an experiment with M. amazonicum at different ontogenetic stages (zoea I, II, V, and IX) exposed to different salinities (0.5, 6, 12 or 18 psu), there was a greater consumption of oxygen at 0.5 psu in the zoea stage V, probably due to the great amounts of energy required for the active transport of salts through the epithelia (Mazzarelli et al 2015).…”

Section: Discussionmentioning

confidence: 63%

“…Estuarine, but especially freshwater crustaceans, are good hyper-osmoregulators, that is, they keep steep osmotic and ionic gradients with respect to the surrounding water, aided by the low permeability of their cuticle (Péqueux 1995, Freire et al 2003, 2008a. Palaemonid shrimps also follow this pattern (Freire et al 2003, Murphy and Austin 2005, Augusto et al 2009, Boudour-Boucheker et al 2013.…”

Section: Introductionmentioning

confidence: 99%

Oxygen consumption remains stable while ammonia excretion is reduced upon short time exposure to high salinity in Macrobrachium acanthurus (Caridae: Palaemonidae), a recent freshwater colonizer

et al. 2017

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ABSTRACT. Palaemonid shrimps occur in the tropical and temperate regions of South America and the Indo-Pacific, in brackish/freshwater habitats, and marine coastal areas. They form a clade that recently (i.e., ~30 mya) invaded freshwater, and one included genus, Macrobrachium Bate, 1868, is especially successful in limnic habitats. Adult Macrobrachium acanthurus (Wiegmann, 1836) dwell in coastal freshwaters, have diadromous habit, and need brackish water to develop. Thus, they are widely recognized as euryhaline. Here we test how this species responds to a short-term exposure to increased salinity. We hypothesized that abrupt exposure to high salinity would result in reduced gill ventilation/perfusion and decreased oxygen consumption. Shrimps were subjected to control (0 psu) and experimental salinities (10, 20, 30 psu), for four and eight hours (n = 8 in each group). The water in the experimental containers was saturated with oxygen before the beginning of the experiment; aeration was interrupted before placing the shrimp in the experimental container. Dissolved oxygen (DO), ammonia concentration, and pH were measured from the aquaria water, at the start and end of each experiment. After exposure, the shrimp's hemolymph was sampled for lactate and osmolality assays. Muscle tissue was sampled for hydration content (Muscle Water Content, MWC). Oxygen consumption was not reduced and hemolymph lactate did not increase

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“…Gill tissue has been reported for modulating ion transport, acclimation to different salinities, and major active site for osmoregulation in crustaceans (Gilles and Pequeux 1985;Pequeux 1995). However, chitinase gene response following salinity changes has been not reported in the gills.…”

Section: Discussionmentioning

confidence: 99%

Chitinase gene responses and tissue sensitivity in an intertidal mud crab (Macrophthalmus japonicus) following low or high salinity stress

Nikapitiya

Kim

Park

et al. 2015

Cell Stress and Chaperones

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Changes in salinity affect the physiological status of the marine habitat including that of the intertidal mud crab Macrophthalmus japonicus. Chitinases play significant biological roles in crustaceans such as morphogenesis, nutrient digestion, and pathogen defense. In this study, the osmoregulatory function of three chitinase gene transcripts was determined compared to seawater (SW, 31±1 psu) in M. japonicus gills and hepatopancreas under different salinities (10, 25, and 40 psu) for 1, 4, and 7 days. In SW-exposed crab, quantitative real-time PCR analysis showed chitinase 1 (Mj-chi1) and chitinase 4 (Mj-chi4) transcripts constitutively expressed in all the tested tissues with strong expression in hepatopancreas, but chitinase 5 (Mj-chi5) showed highest expression in stomach. When exposed to different salinities, Mj-chi1 showed significant up-regulation at day 4 whereas Mj-chi4 showed late up-regulation (day 7) at all the salinities in hepatopancreas. In the gills, early up-regulation (day 1) in Mj-chi1 and time-dependent late up-regulation (day 7) in Mj-chi4 at high salinity were observed. These results indicate the possibility of using Mj-chi4 as a marker against salinity changes. Moreover, our results further suggest that Mj-chi1 and Mj-chi4 transcriptions were significantly affected by changes in salinity; however, Mj-chi5 in gills was less affected by salinity and showed no effect in hepatopancreas. Thus, chitinase transcription modulations in the gills are more sensitive than hepatopancreas to salinity stress. Further, present data indicate the possible existence of different physiological roles among chitinase gene families, which need to be clarified in more detail by future biochemical and physiological functional studies.

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Osmotic Regulation in Crustaceans

Cited by 600 publications

References 0 publications

Effects of osmotic stress on crustacean larval growth and protein and lipid levels are related to life-histories: The genus Armases as a model

Effects of osmotic stress on crustacean larval growth and protein and lipid levels are related to life-histories: The genus Armases as a model

Oxygen consumption remains stable while ammonia excretion is reduced upon short time exposure to high salinity in Macrobrachium acanthurus (Caridae: Palaemonidae), a recent freshwater colonizer

Chitinase gene responses and tissue sensitivity in an intertidal mud crab (Macrophthalmus japonicus) following low or high salinity stress

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