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In vertebrates, the glucocorticoid "stress" response (corticosterone or cortisol) through the hypothalamic-pituitary-adrenal (HPA) axis influences many essential functions, including behavior, metabolism, immunity, and ontogenetic transitions. During development, stress responses can be adaptive if they facilitate antipredator behavior and modulate developmental speed to adjust to environmental conditions; however, these same responses can be maladaptive when energetic costs become too high and developmental speed trades-off with size and health at maturity. Thus, the timing of HPA-axis development may be aligned with specific developmental challenges and opportunities presented by a species' life history strategy.
View Article and Find Full Text PDFAnalysis of the remediation competence of Aspergillus flavus biomass in wastewater of the dyeing industry: An in-vitro study.
Environ Res
July 2024
Natural Drug Research Lab, Department of Biotechnology, Periyar University, Salem 636 011, Tamil Nadu, India. Electronic address:
The dyeing industry effluent causes severe environmental pollution and threatens the native flora and fauna. The current study aimed to analyze the physicochemical parameters of dyeing industry wastewater collected in different sites (K1, E2, S3, T4, and V5), as well as the metal tolerance and decolourisation ability of Aspergillus flavus. Furthermore, the optimal biomass quantity and temperatures required for efficient bioremediation were investigated.
View Article and Find Full Text PDFTadpoles of the dyeing poison dart frog Dendrobates tinctorius (Cuvier, 1797) from eastern Amazonia.
Zootaxa
January 2024
Laboratrio de Herpetologia; Departamento de Cincias Biolgicas e da Sade; Universidade Federal do Amap; Macap; Brazil.
Poison frog dietary preference depends on prey type and alkaloid load.
PLoS One
December 2022
Department of Biology, Stanford University, Stanford, CA, United States of America.
The ability to acquire chemical defenses through the diet has evolved across several major taxa. Chemically defended organisms may need to balance chemical defense acquisition and nutritional quality of prey items. However, these dietary preferences and potential trade-offs are rarely considered in the framework of diet-derived defenses.
View Article and Find Full Text PDFSize-dependent aggression towards kin in a cannibalistic species.
Behav Ecol
March 2022
Department of Biology and Environmental Science, University of Jyvaskyla, P.O. Box 35, 40014 Jyväskylä, Finland.
In juveniles extreme intraspecies aggression can seem counter-intuitive, as it might endanger their developmental goal of surviving until reproductive stage. Ultimately, aggression can be vital for survival, although the factors (e.g.
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