Changes in oxidative stress parameters and acid phosphatase activity in the pre-regressing and regressing tail of Indian jumping frog Polypedates maculatus (Anura, Rhacophoridae)

Mahapatra, Pravati Kumari; Mohanty-Hejmadi, P.; Chainy, G.B.N.

doi:10.1016/s1532-0456(01)00238-1

Cited by 13 publications

(16 citation statements)

References 16 publications

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“…formed by the b-scission of peroxidized polyunsaturated fatty acids (Agarwal & Chase 2002), and has been reported as a physiological marker of oxidative stress during larvae metamorphosis (Mahapatra, Mohanty-Hejmadi & Chainy 2001;Menon & Rozman 2007). In addition, we assayed superoxide dismutase (SOD), a metalloenzyme that catalyses the dismutation of superoxide into oxygen and hydrogen peroxide and forms a crucial part of intracellular antioxidant defence, for example, during early stages of development in amphibians (Montesano et al 1989;Menon & Rozman 2007).…”

Section: Predation Events On Poison Frogs Reportedmentioning

confidence: 99%

Diet, development and the optimization of warning signals in post‐metamorphic green and black poison frogs

et al. 2013

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Summary1. Many prey species are chemically defended and have conspicuous appearance to deter predators (i.e. aposematism). Such warning signals work because predators pay attention to the colour and size of signals, which they associate with unprofitability. 2. Paradoxically, in early life stages, aposematic species are often warningly coloured, but their chemical defences are lacking because they have yet to be acquired through the diet or synthesized endogenously. This state of being conspicuous yet poorly defended must place individuals at increased risk of predation, but how they minimize this risk during development is unclear. 3. We reared larval green and black poison frogs (Dendrobates auratus) on a relatively low or a higher food supply and tested the hypothesis that individuals with more resources should grow larger while reducing their investment in warning signals at metamorphic completion. We also assayed markers of oxidative balance (malondialdehyde, superoxide dismutase and total antioxidant capacity) to ascertain whether there were resource-allocation trade-offs that differed with diet treatments. 4. Low-food froglets were relatively small, and their body size and signal luminance (perceived brightness) were positively correlated. In contrast, in high-food froglets body size and warning signal luminance were negatively correlated, suggesting either a resource-allocation trade-off or alternatively a facultative reduction in luminance exhibited by larger froglets. 5. The reduction in luminance in relatively large, high-food froglets did not appear to arise because of oxidative stress: signal luminance and markers of oxidative stress were positively correlated in high-food froglets, but were negatively correlated in low-food froglets suggesting a trade-off. 6. Our results highlight developmental plasticity in body size and coloration as affected by resource (i.e. food) supply. Such plasticity seems likely to minimize predation risk during the vulnerable period early in life when individuals are warningly coloured and must make the transition from an undefended phenotype to a mature aposematic state.

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Section: Predation Events On Poison Frogs Reportedmentioning

confidence: 99%

Diet, development and the optimization of warning signals in post‐metamorphic green and black poison frogs

et al. 2013

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“…Hence, PUFA should be well protected from oxidative assault during larval development and metamorphosis. Production of ROS during larval development is likely to depend upon metabolic status of the cell and the ambient oxygen tension, although a definite role of the ROS and antioxidants is established in various cellular processes such as development, differentiation, regeneration and regression (Arun and Subramanian, 1998;Mahapatra et al, 2001Mahapatra et al, , 2002Dvorska et al, 2002). Little has been reported about the relation between macronutrients and antioxidant defences in fish, although results indicate that different dietary energy sources influence the main enzymatic antioxidant defences (Alvarez et al, 1998;Lygren and Hemre, 2002;Rueda-Jasso et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Replacement of fishmeal with Spirulina platensis, Chlorella vulgaris and Azolla pinnata on non-enzymatic and enzymatic antioxidant activities of Macrobrachium rosenbergii

Radhakrishnan

Bhavan

Seenivasan

et al. 2014

The Journal of Basic & Applied Zoology

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The fishmeal replaced with Spirulina platensis, Chlorella vulgaris and Azolla pinnata and the formulated diet fed to Macrobrachium rosenbergii postlarvae to assess the enhancement ability of non-enzymatic antioxidants (vitamin C and E), enzymatic antioxidants (superoxide dismutase (SOD) and catalase (CAT)) and lipid peroxidation (LPx) were analysed. In the present study, the S. platensis, C. vulgaris and A. pinnata inclusion diet fed groups had significant (P < 0.05) improvement in the levels of vitamins C and E in the hepatopancreas and muscle tissue. Among all the diets, the replacement materials in 50% incorporated feed fed groups showed better performance when compared with the control group in non-enzymatic antioxidant activity. The 50% fishmeal replacement (best performance) diet fed groups taken for enzymatic antioxidant study, in SOD, CAT and LPx showed no significant increases when compared with the control group. Hence, the present results revealed that the formulated feed enhanced the vitamins C and E, the result of decreased level of enzymatic antioxidants (SOD, CAT and LPx) revealed that these feeds are non-toxic and do not produce any stress to postlarvae. These ingredients can be used as an alternative protein source for sustainable Macrobrachium culture.

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“…The metamorphic changes of frog development are brought about by hormones thyroxin (T 4 ) and triiodo thyronine (T 3 ) from the thyroid during metamorphosis (Tata, 2003). Various lysosomal enzymes like the phosphatases, cathepsins, ribonucleases, deoxyribonucleases, and b-glucuronidase exhibit higher levels of activity in the resorbing tail tissue (Mahapatra et al, 2001). Various lysosomal enzymes like the phosphatases, cathepsins, ribonucleases, deoxyribonucleases, and b-glucuronidase exhibit higher levels of activity in the resorbing tail tissue (Mahapatra et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Immunohistochemical localization of cathepsin D and a possible role of melanocytes during tail resorption in tadpoles of a tropical toad

Mahapatra

2012

Journal of Morphology

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Programmed cell death during anuran tail resorption is primarily brought about by apoptosis. Cathepsin D, a lysosomal aspartyl protease, is involved in the death of tail tissues. Thus, anuran tail resorption presents an ideal model to study cathepsin-mediated cell death during vertebrate development. Present study describes the trend of specific activity of cathepsin D in the tail of different developmental stages and immunohistochemical localization of cathepsin D in the tail tissues of the common Asian toad, Duttaphrynus melanostictus. Cathepsin D was involved in programmed cell death in epidermis, muscle, spinal cord, and blood cells in the resorbing tail. Interestingly, it was also involved in the pre-resorbing tail before visible tail resorption which indicates initiation of cell death even before actually the tail resorbs. Melanocytes were found to be one of the causative agents in degrading tail tissues and were associated with the degradation of muscle, epidermis and spinal cord of the resorbing tail.

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Changes in oxidative stress parameters and acid phosphatase activity in the pre-regressing and regressing tail of Indian jumping frog Polypedates maculatus (Anura, Rhacophoridae)

Cited by 13 publications

References 16 publications

Diet, development and the optimization of warning signals in post‐metamorphic green and black poison frogs

Diet, development and the optimization of warning signals in post‐metamorphic green and black poison frogs

Replacement of fishmeal with Spirulina platensis, Chlorella vulgaris and Azolla pinnata on non-enzymatic and enzymatic antioxidant activities of Macrobrachium rosenbergii

Immunohistochemical localization of cathepsin D and a possible role of melanocytes during tail resorption in tadpoles of a tropical toad

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