The Role of Relative Body Size in a Predator-Prey Relationship between Dragonfly Naiads and Larval Anurans

Oikos ◽  
1985 ◽  
Vol 45 (1) ◽  
pp. 59 ◽  
Author(s):  
Joseph Travis ◽  
W. Hubert Keen ◽  
John Juilianna
Keyword(s):  
Body Size ◽  
Predator Prey ◽  
Larval Anurans ◽  
Relative Body Size

scholarly journals Size does matter — the eco-evolutionary effects of changing body size in fish

2020 ◽  
Vol 28 (3) ◽  
pp. 311-324
Author(s):  
Pauliina A. Ahti ◽  
Anna Kuparinen ◽  
Silva Uusi-Heikkilä
Keyword(s):  
Body Size ◽  
Dissolved Oxygen ◽  
Water Temperature ◽  
Evolutionary Potential ◽  
Predator Prey ◽  
Selective Agents ◽  
High Heritability ◽  
The Individual ◽  
Individual Body

Body size acts as a proxy for many fitness-related traits. Body size is also subject to directional selection from various anthropogenic stressors such as increasing water temperature, decreasing dissolved oxygen, fisheries, as well as natural predators. Changes in individual body size correlate with changes in fecundity, behaviour, and survival and can propagate through populations and ecosystems by truncating age and size structures and changing predator–prey dynamics. In this review, we will explore the causes and consequences of changing body size in fish in the light of recent literature and relevant theories. We will investigate the central role of body size in ecology by first discussing the main selective agents that influence body size: fishing, increasing water temperature, decreasing dissolved oxygen, and predation. We will then explore the impacts of these changes at the individual, population, and ecosystem levels. Considering the relatively high heritability of body size, we will discuss how a change in body size can leave a genetic signature in the population and translate to a change in the evolutionary potential of the species.

The Role of Predation in Determining Traits of Aedes aegypti (Diptera: Culicidae) and Infection With Zika Virus

2021 ◽  
Author(s):  
Shawna Bellamy ◽  
Barry W Alto
Keyword(s):  
Aedes Aegypti ◽  
Zika Virus ◽  
Life History Traits ◽  
Immature Stages ◽  
Direct Effects ◽  
Infected Blood ◽  
Predator Prey ◽  
Susceptibility To Infection ◽  
Density Reduction

Abstract Non-lethal predator-prey interactions during the immature stages can cause significant changes to mosquito life history traits and their ability to transmit pathogens as adults. Treatment manipulations using mosquitoes Aedes aegypti (L.) and Toxoryhnchites rutilus (Coquillett) were performed during the immature stages to explore the potential impacts of non-lethal interactions on adult susceptibility to infection, disseminated infection and saliva infection of Ae. aegypti following ingestion of Zika virus-infected blood. Treatments inducing density reduction resulted in reduced development time and survivorship to adulthood. However, effects of treatment did not alter infection, dissemination, or saliva infection. These observations indicate that, while non-lethal predation may impact some traits that influence population dynamics and transmission of pathogens, there were no direct effects on mosquito-arbovirus interactions.

The role of underestimating body size for self-esteem and self-efficacy among grade five children in Canada

2015 ◽  
Vol 25 (10) ◽  
pp. 753-759 ◽  
Author(s):  
Katerina Maximova ◽  
Mohammad K.A. Khan ◽  
S. Bryn Austin ◽  
Sara F.L. Kirk ◽  
Paul J. Veugelers
Keyword(s):  
Body Size ◽  
Self Efficacy ◽  
Self Esteem

Methyl mercury in zooplankton—the role of size, habitat, and food quality

2002 ◽  
Vol 59 (10) ◽  
pp. 1606-1615 ◽  
Author(s):  
Martin Kainz ◽  
Marc Lucotte ◽  
Christopher C Parrish
Keyword(s):  
Organic Matter ◽  
Fatty Acid ◽  
Body Size ◽  
Methyl Mercury ◽  
Size Fraction ◽  
Food Sources ◽  
Calanoid Copepods ◽  
Bacterial Food

Pathways of methyl mercury (MeHg) accumulation in zooplankton include ingestion of organic matter (OM). We analyzed fatty acid (FA) biomarkers in zooplankton to (i) investigate the effect of allochthonous and autochthonous OM ingestion on MeHg concentrations ([MeHg]) in zooplankton and (ii) examine how algal and bacterial food sources affect MeHg bioaccumulation. We partitioned bulk zooplankton samples (i.e., >500, 202, 100, and 53 μm) from Lake Lusignan (Québec) and measured [MeHg] and [FA] in each fraction. [MeHg] increased with increasing body size and was significantly higher in pelagic than in littoral macrozooplankton (>500 μm). The amount of the ingested terrestrial FA biomarker 24:0 indicated that less than 1% of the total FA in zooplankton was derived from allochthonous sources. More than 60% of the ingested FA originated from algal biomarkers and <10% from bacterial biomarkers. Relative amounts of algal-derived essential FA and bacterial FA were not associated with [MeHg] in any size fraction. In pelagic zones, the amount of MeHg in zooplankton related positively to the number of large organisms such as Calanoid copepods and Daphnia. We propose that the accumulation of MeHg in lacustrine zooplankton depends on the zooplankton habitat rather than on the quality of ingested food.

Accuracy of body size estimation: Role of biopsychosocial variables

Body Image ◽  
2006 ◽  
Vol 3 (2) ◽  
pp. 163-171 ◽  
Author(s):  
Marita P. McCabe ◽  
Lina A. Ricciardelli ◽  
Geeta Sitaram ◽  
Katherine Mikhail
Keyword(s):  
Body Size ◽  
Size Estimation ◽  
Body Size Estimation

Season of birth and subsequent body size: The potential role of prenatal vitamin D

2010 ◽  
Vol 23 (2) ◽  
pp. 190-200 ◽  
Author(s):  
Marta Krenz-Niedbała ◽  
Elżbieta A. Puch ◽  
Krzysztof Kościński
Keyword(s):  
Vitamin D ◽  
Body Size ◽  
Potential Role ◽  
Season Of Birth

The Role of Body Size in the Assembly of West Indian Bird Communities

Evolution ◽  
1983 ◽  
Vol 37 (5) ◽  
pp. 1062 ◽  
Author(s):  
Ted J. Case ◽  
John Faaborg ◽  
Ron Sidell
Keyword(s):  
Body Size ◽  
West Indian ◽  
Bird Communities ◽  
Indian Bird

scholarly journals The role of local versus biogeographical processes in influencing diversity and body‐size variation in mammal assemblages

2016 ◽  
Vol 6 (5) ◽  
pp. 1447-1456 ◽  
Author(s):  
Luiz Carlos S. Lopez ◽  
Marcos S. L. Figueiredo ◽  
Maria Paula de Aguiar Fracasso ◽  
Daniel Oliveira Mesquita ◽  
Ulisses Umbelino Anjos ◽  
...  
Keyword(s):  
Body Size ◽  
Size Variation ◽  
Body Size Variation ◽  
Mammal Assemblages

The stabilizing role of cannibalism in a predator-prey system

1995 ◽  
Vol 57 (3) ◽  
pp. 401-411 ◽  
Author(s):  
C KOHLMEIER ◽  
W EBENHOH
Keyword(s):  
Predator Prey ◽  
Prey System
Sign in / Sign up

Export Citation Format

Share Document