Environmental temperature and body size influence the life cycle of the species, with consequences for population size. In addition, it has been reported that increased temperature can lead to a decrease in body size. In the context of a resource‐stock, whose abundance is diminished by the action of an endothermic predator and also by small‐scale fishing activity, we analysed a Schaefer‐type fishery model that incorporates parametric variables associated with thermal performance, metabolic theory, and warming. We project the biomass of the resource in a thermal tolerance range with an increasing temperature trend obtained from current data. In the short term there could be an increase in biomass. However, over time the stock will decline rapidly, in association with the intensity of temperature increase and fishing effort. Recommendations for Resource Managers Temperature increments towards tolerance limits will generate that fish resources will eventually collapse locally. In the meantime, latitudinal variation in the physiological sensitivity of organisms will affect the outcome of the fishing effort differentially. Planning for more sustainable harvesting requires an ecophysiological understanding of both the resource and the species with which it interacts. Simple models contribute to the formulation of strategies aimed to guide responsible monitoring systems, where theoretical, observational, and experimental information is highly relevant.

The objective of this study is to perform an analysis on the effect of the increase in temperature under the context of climate change on the dynamics of a population of ectothermic organisms, which are highly susceptible to these changes, as their body temperatures depend crucially on the environmental temperature. In our modelling approach, population abundance is governed by a logistic growth, where the intrinsic growth rate is affected by the change in temperature. The relationship between environmental temperature and the intrinsic rate of increase will be represented by a thermal performance curve type. In order to facilitate analytical simplicity but also novelty, a cubic expression is proposed to represent the thermal performance curve, the intensity of intraspecific competition is considered to remain constant and the tendency of temperature increase follows a linear expression. Finally, consequences on the trends of population abundance curves are assessed.

An established framework to evaluate vulnerability to global warming is to associate the expected temperature trends with thermal performance curves, which indicate how fitness changes as a function of body temperature. Mathematical modelling approaches allow synthesizing the mechanistic understanding of ecological processes, enabling the assessment of the potential impacts of global warming on populations. epcc allows to model and simulate the effects of thermal sensitivity and the exposition to different trends in environmental temperature on the abundance dynamics of ectothermic populations. epcc allows a synthesis of the possible consequences of global‐ and local‐scale warming, constituting a useful tool for understanding the risk of extinction of populations.

<p style="text-align: justify;">La infección por el virus Dengue es considerada hoy día una emergencia epidemiológica, debido al incremento de áreas geográficas endémicas y a los cambios en el patrón de la infección, incrementando el riesgo de morbimortalidad. El Dengue tiene un espectro de severidad variado, con evolución clínica y resultados impredecibles. La mayoría de las infecciones presentan un cuadro clínico autoresolutivo, pero otros resultan en formas graves de la enfermedad. Las limitaciones del esquema de clasificación de la Organización Mundial de la Salud de 1997 han sido tema de discusión. Una afirmación, es que el dengue hemorrágico y el síndrome de choque por dengue equivalen a formas graves de la enfermedad. Sin embargo, a partir de numerosos estudios, se ha revelado una significativa proporción de casos clínicamente graves que se encuentran en la clasificación de Fiebre Dengue, lo cual ha ocasionado manejo inadecuado y desmejoras en el pronóstico de los pacientes. La clasificación de 2009, propone la detección oportuna de pacientes en riesgo de evolucionar a dengue grave, sin embargo, persisten dificultades para la clasificación. En el presente artículo se plantea analizar estos criterios y su aplicación en países endémicos como Venezuela, donde pudieran generarse demanda de hospitalizaciones ante un signo de alarma en un paciente que pudiera manejarse de forma ambulatoria, o que haya alguna manifestación inusual aún no especificada. Se propone con este esbozo caracterizar un complejo sindromático de complicaciones en dengue, descripción y documentación de las mismas, con el propósito de optimizar el abordaje clínico del paciente.</p>