Extreme drought pushes stream invertebrate communities over functional thresholds

…, TJ Matthews, AM Milner, MJ O'Callaghan… - Global change …, 2019 - Wiley Online Library
Functional traits are increasingly being used to predict extinction risks and range shifts under
long‐term climate change scenarios, but have rarely been used to study vulnerability to …

Drought intensification drives turnover of structure and function in stream invertebrate communities

…, K Khamis, AM Milner, Z Wang, MJ O'callaghan… - …, 2018 - Wiley Online Library
Climatic extremes are becoming more frequent and intense across much of the globe,
potentially transforming the biodiversity and functioning of affected ecosystems. In freshwaters, …

Effects of minor laboratory procedures, adrenalectomy, social defeat or acute alcohol on regional brain concentrations of corticosterone

AP Croft, MJ O'Callaghan, SG Shaw, G Connolly… - Brain research, 2008 - Elsevier
Concentrations of corticosterone in brain areas of TO strain mice were measured by
radioimmunoassay. The studies examined the effects of routine laboratory maneuvers, variation …

Investigating the impact of street lighting changes on garden moth communities

KE Plummer, JD Hale, MJ O'Callaghan… - Journal of Urban …, 2016 - academic.oup.com
Night time illumination of cities is undergoing radical change through the adoption of new
street lighting technologies, but the impacts of these large-scale changes on biodiversity have …

Drought intensification alters the composition, body size, and trophic structure of invertebrate assemblages in a stream mesocosm experiment

…, K Khamis, AM Milner, MJ O'callaghan… - Freshwater …, 2019 - Wiley Online Library
Predicted trends towards more intense droughts are of particular significance for running
water ecosystems, as the loss of critical stream habitat can provoke sudden changes in …

The hypothalamopituitary–adrenal axis and alcohol preference

MJ O'Callaghan, AP Croft, C Jacquot, HJ Little - Brain research bulletin, 2005 - Elsevier
Effects of alterations in stress hormones and their actions were investigated on alcohol
preference, by intraperitoneal administration of RU38486 (a Type II glucocorticoid receptor …

N-substituted benztropine analogs: selective dopamine transporter ligands with a fast onset of action and minimal cocaine-like behavioral effects

…, MJ O'Callaghan, GE Agoston, J Cao… - … of Pharmacology and …, 2011 - ASPET
Previous studies suggested that differences between the behavioral effects of cocaine and
analogs of benztropine were related to the relatively slow onset of action of the latter …

[HTML][HTML] Responses to river inundation pressures control prey selection of riparian beetles

MJ O'Callaghan, DM Hannah, I Boomer, M Williams… - PloS one, 2013 - journals.plos.org
Background Riparian habitats are subjected to frequent inundation (flooding) and are
characterised by food webs that exhibit variability in aquatic/terrestrial subsidies across the …

Exposed riverine sediments (ERS) in England and Wales: distribution, controls and management

MJ O'Callaghan, DM Hannah… - Aquatic Conservation …, 2013 - Wiley Online Library
The invertebrates of natural and semi‐natural floodplains are diverse, often rare, and important
functionally. Early successional patches formed by flood‐deposited, coarse, exposed …

Potentiation of latent inhibition by haloperidol and clozapine is attenuated in Dopamine D2 receptor (Drd-2)-deficient mice: do antipsychotics influence learning to …

MJ O'Callaghan, C Bay-Richter… - Journal of …, 2014 - journals.sagepub.com
Whether the dopamine Drd-2 receptor is necessary for the behavioural action of antipsychotic
drugs is an important question, as Drd-2 antagonism is responsible for their debilitating …