Identifying physiological and environmental influences on otolith chemistry in a coastal fishery species

2020 ◽  
Author(s):  
Jasmin C. Martino ◽  
Zoë A. Doubleday ◽  
Anthony J. Fowler ◽  
Bronwyn M. Gillanders
Keyword(s):  
Environmental Influences ◽  
Otolith Chemistry ◽  
Fishery Species

Corrigendum to: Identifying physiological and environmental influences on otolith chemistry in a coastal fishery species

2021 ◽  
Vol 72 (6) ◽  
pp. 922
Author(s):  
Jasmin C. Martino ◽  
Zoë A. Doubleday ◽  
Anthony J. Fowler ◽  
Bronwyn M. Gillanders
Keyword(s):  
Environmental Influences ◽  
Mixed Effects ◽  
Sea Surface ◽  
Physiological Age ◽  
Otolith Chemistry ◽  
Otolith Growth ◽  
Physiological Factors ◽  
Elemental Concentrations ◽  
Study Designs ◽  
Fishery Species

Otolith (ear stone) chemistry provides powerful insights into the lives of fish. Although frequently used to reconstruct past environments, the influence of physiology remains unsettled. As such, we investigated the relationships between otolith chemistry, physiological factors and environmental factors in an iconic fishery species, snapper (Chrysophrys auratus). Lifetime otolith profiles were analysed of carbon (δ13C) and oxygen (δ18O) isotopes, and elemental concentrations of lithium (Li:Ca), magnesium (Mg:Ca), manganese (Mn:Ca), strontium (Sr:Ca), and barium (Ba:Ca). Mixed-effects modelling alongside a detailed literature review was used to investigate physiological (age, otolith growth rate, fish size, sex) and environmental influences (sea-surface temperature and chlorophyll-a) on otolith chemistry. Carbon isotopes and magnesium related to physiological factors, suggesting their potential as physiological proxies. Physiology also weakly related to strontium and lithium. By contrast, oxygen isotopes, barium, and manganese (except for natal signatures) were suggested to provide insights into past environments. Our study stresses the importance of consistency in biological characteristics for study designs, and highlights the potential of physiological proxies for distinguishing between populations in uniform water bodies. This study has not only reinforced our confidence in field applications of otolith chemistry, but has furthered our understanding of the influence of physiology.

Behavioral Testing of Mice Concerning Anxiety and Depression

2015 ◽  
Vol 223 (3) ◽  
pp. 151-156 ◽  
Author(s):  
Nina Schweinfurth ◽  
Undine E. Lang
Keyword(s):  
Environmental Influences ◽  
Sickness Behavior ◽  
Laboratory Research ◽  
Anxiety And Depression ◽  
Housing Conditions ◽  
Human Beings ◽  
Behavioral Testing ◽  
New Developments ◽  
Animal Trials ◽  
Resilience Factors

Abstract. In the development of new psychiatric drugs and the exploration of their efficacy, behavioral testing in mice has always shown to be an inevitable procedure. By studying the behavior of mice, diverse pathophysiological processes leading to depression, anxiety, and sickness behavior have been revealed. Moreover, laboratory research in animals increased at least the knowledge about the involvement of a multitude of genes in anxiety and depression. However, multiple new possibilities to study human behavior have been developed recently and improved and enable a direct acquisition of human epigenetic, imaging, and neurotransmission data on psychiatric pathologies. In human beings, the high influence of environmental and resilience factors gained scientific importance during the last years as the search for key genes in the development of affective and anxiety disorders has not been successful. However, environmental influences in human beings themselves might be better understood and controllable than in mice, where environmental influences might be as complex and subtle. The increasing possibilities in clinical research and the knowledge about the complexity of environmental influences and interferences in animal trials, which had been underestimated yet, question more and more to what extent findings from laboratory animal research translate to human conditions. However, new developments in behavioral testing of mice involve the animals’ welfare and show that housing conditions of laboratory mice can be markedly improved without affecting the standardization of results.

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