Parthenogenetic reproduction of Diaphanosoma celebensis (Crustacea: Cladocera): influence of salinity on feeding, survival, growth and neonate production

Achuthankutty, C.T.; Shrivastava, Y.; Mahambre, G.G.; Goswami, S.C.; Madhupratap, M.

doi:10.1007/s002270000322

Cited by 28 publications

(11 citation statements)

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“…Increasing salinity of watercourses is known as secondary or anthropogenic salinization and constitutes an acute form of environmental disturbance ( Mack et al, 2000 ; Smith et al, 2007 ). Several studies reported the effect of salinity at different levels of biological organization such as feeding and growth rates, reproduction, survival, and species diversity, especially in aquatic invertebrates ( Aladin, 1991 ; Frey, 1993 ; Jeppesen et al, 1994 ; Achuthankutty et al, 2000 ; Schallenberg et al, 2003 ; Amsinck et al, 2005 ; Sarma et al, 2006 ; Heine-Fuster et al, 2010 ; Karraker and Gibbs, 2011 ). Thus, living in salty environments is considered a challenge for animals because maintenance of constant ionic and osmotic conditions of internal fluids is necessary for the adequate function of enzymatic reactions and its dependent processes ( Bentley, 1970 ; Evans, 2009 ).…”

Section: Introductionmentioning

confidence: 99%

Metabolic cost of osmoregulation in a hypertonic environment in the invasive African clawed frogXenopus laevis

2016

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Studies of aquatic invertebrates reveal that salinity affects feeding and growth rates, reproduction, survival, and diversity. Little is known, however, about how salinity impacts the energy budget of vertebrates and amphibians in particular. The few studies focused on this topic in vertebrates suggest that the ingestion of salts and the resulting osmoregulatory activity is energetically expensive. We analyzed the effect of saline acclimation on standard metabolic rates (SMR) and the activities of metabolic enzymes of internal organs and osmoregulatory variables ( plasma osmolality and urea plasma level) in females of Xenopus laevis by means of acclimating individuals to an isosmotic (235 mOsm NaCl; ISO group) and hyper-osmotic (340 mOsm NaCl; HYP group) environment for 40 days. After acclimation, we found that total and mass-specific SMR was approximately 80% higher in the HYP group than those found in the ISO group. These changes were accompanied by higher citrate synthase activities in liver and heart in the HYP group than in the ISO group. Furthermore, we found a significant and positive correlation between metabolic rates and plasma urea, and citrate synthase activity in liver and heart. These results support the notion that the cost of osmoregulation is probably common in most animal species and suggest the existence of a functional association between metabolic rates and the adjustments in osmoregulatory physiology, such as blood distribution and urea synthesis.

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Section: Introductionmentioning

confidence: 99%

Metabolic cost of osmoregulation in a hypertonic environment in the invasive African clawed frogXenopus laevis

2016

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“…Here, our population of B. longirostris (a freshwater species) was maintained in a slightly saline environment. Elevated salinity prompts physiological stress resulting from the limited osmoregulatory capabilities of freshwater animals (Aladin, 1991;Frey, 1993), which can affect higher level processes such as the feeding rate, somatic growth, reproduction, and lifespan (Achuthankutty, Shrivastava, Mahambre, Goswami, & Madhupratap, 2000;Bezirci et al, 2012). The experiment revealed that the population of B. longirostris reacted to enhanced salinity by phenotypic alterations in favour of the typica morphotype.…”

Section: Discussionmentioning

confidence: 99%

Within‐species phenotypic diversity enhances resistance to stress ‐ A case study using the polymorphic species Bosmina longirostris

Adamczuk

Mieczan

2019

Internat Rev Hydrobiol

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Bosmina longirostris is a polymorphic cladoceran, widely distributed throughout the world in temperate and tropical climates, where it colonises all kinds of freshwater bodies regardless of their trophy, acidification, or salinity. In this paper, we test the hypothesis that the ability of B. longirostris to colonise new freshwater bodies results from their maintenance of morphotypes with different life histories. To test the above hypothesis, the life histories of four morphotypes of B. longirostris were analysed through daily observations of individuals cultured separately under uniform optimal conditions. We demonstrated that these morphotypes differed in somatic growth, reproductive effort, lifespan, and fitness, and differences in life histories among morphotypes resulted from the trade‐offs between these parameters. Next, we examined the role of distinct morphotypes (each with specific life‐history) in populations subjected to stress: we maintained two populations of B. longirostris under biotic stress (the presence of invertebrate predators) or abiotic stress (elevated salinity). At the end of the experiment these populations differed from one another in the relative density of morphotypes in comparison with the population cultured in the optimal environment. In populations that suffered from predatory pressure we found an increase in the relative density of morphotypes that grew considerably quicker, had a shorter lifespan, reproduced infrequently but delivered many offspring at each reproductive event. In populations that suffered from elevated salinity, we observed an increase in morphotypes that exhibited low reproductive effort but had the highest survival. Simultaneously, with phenotypic regrouping of populations, morphotypes adapted to novel conditions by altering the expression of life‐history traits. The observed switches in the phenotypic structure of B. longirostris suggest that the persistence of morphotypes with different life histories is beneficial to populations colonising varying environments and their relative abundances in a population are conditioned by the diverseness of local stressors.

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“…Daphnia tend to be sensitive to high salinity, but clones of Daphnia pulex have been recovered from high salinity ponds in the Canadian low Arctic near Churchill, Manitoba (Weider and Hebert 1987). Physiological stress resulting from high salinity can affect the body size, feeding rates, and life history traits of Cladocera (Achuthankutty et al 2000;Martínez-Jerónimo and Martínez-Jerónimo 2007), and previous studies have observed a negative correlation between cladoceran species diversity and lakewater salinity (Chengalath 1982;Hammer and Forró 1992;Bos et al 1999). Saltwater inundations from storm surges like the one that occurred in the Mackenzie Delta have the potential to negatively impact the cladoceran community in freshwater coastal lakes if the species historically present in these lakes are not adapted to tolerate large and sudden changes in lakewater salinity.…”

Section: Introductionmentioning

confidence: 92%

Investigating the response of Cladocera to a major saltwater intrusion event in an Arctic lake from the outer Mackenzie Delta (NT, Canada)

et al. 2012

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An increase in the frequency and intensity of marine storm surges is a predicted consequence of climate warming, and therefore it is important to better understand the biological responses to such events in coastal regions. In late September 1999, a major storm surge resulted in a saltwater intrusion event over a large area of the Mackenzie Delta (NT, Canada) front, causing rapid salinization of lakes on the alluvial plain. Due to a lack of long-term ecological monitoring data in the region, the impacts that the saltwater intrusion event had on the biota of affected lakes were unknown. We used high-resolution paleolimnological approaches to reconstruct past assemblage changes in Cladocera from impacted Lake DZO-29 (unofficial name) in order to determine how different cladoceran species responded to a major increase in lake salinity following the 1999 storm surge. Camptocercus were extirpated from the lake following the saltwater intrusion and have not recovered. We also observed an initial decrease in Alona relative abundance following the marine flooding, likely reflecting a loss of A. quadrangularis, A. barbulata, and A. costata from the lake. A. circumfimbriata, Chydorus biovatus, C. brevilabris, and Bosmina spp. were abundant both before and after the saltwater intrusion, and Paralona pigra was present following the storm surge, but not prior to it. The most notable shift in Cladocera in the recent sedimentary record, however, occurred much earlier, with an increase in pelagic Bosmina taxa and a subsequent decrease in the benthic/littoral taxa Chydorus and Camptocercus, an assemblage shift that is consistent with a response to climate warming in this region, and strongly correlated to other changes in the lake inferred to be as a result of regional warming.

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Parthenogenetic reproduction of Diaphanosoma celebensis (Crustacea: Cladocera): influence of salinity on feeding, survival, growth and neonate production

Cited by 28 publications

References 0 publications

Metabolic cost of osmoregulation in a hypertonic environment in the invasive African clawed frogXenopus laevis

Metabolic cost of osmoregulation in a hypertonic environment in the invasive African clawed frogXenopus laevis

Within‐species phenotypic diversity enhances resistance to stress ‐ A case study using the polymorphic species Bosmina longirostris

Investigating the response of Cladocera to a major saltwater intrusion event in an Arctic lake from the outer Mackenzie Delta (NT, Canada)

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