Tooth Wear by Food Limitation and Its Life History Consequences in Wild Reindeer

Oikos ◽  
1988 ◽  
Vol 51 (2) ◽  
pp. 238 ◽  
Author(s):  
Terje Skogland
Keyword(s):  
Life History ◽  
Food Limitation ◽  
Tooth Wear ◽  
Wild Reindeer

Coping with predators and food limitation: testing life history theory for sex?specific larval development

Oikos ◽  
2007 ◽  
Vol 116 (4) ◽  
pp. 642-649 ◽  
Author(s):  
Dirk Johannes Mikolajewski ◽  
Gerrit Joop ◽  
Bianca Wohlfahrt
Keyword(s):  
Life History ◽  
Larval Development ◽  
Life History Theory ◽  
Food Limitation

The association of tooth wear with sociality of free-ranging male koalas (Phascolarctos cinereus Goldfuss)

2002 ◽  
Vol 50 (6) ◽  
pp. 621 ◽  
Author(s):  
Murray Logan ◽  
Gordon D. Sanson
Keyword(s):  
Life History ◽  
Adult Male ◽  
Reproductive Effort ◽  
Radio Telemetry ◽  
Tooth Wear ◽  
Phascolarctos Cinereus ◽  
Free Ranging

The sociality (as measured by the degree of bellowing and amount of tree use) of five adult male koalas and one sub-adult male koala (Phascolarctos cinereus), with varying degrees of tooth wear, were investigated using acoustically sensitive radio-telemetry. Initial increases in tooth wear that coincide with an increase in age to maturity were associated with an increase in reproductive effort. Advanced tooth wear was found to be associated with a decrease in reproductive effort. This trend in reproductive effort is consistent with life-history predictions, and suggests that tooth wear has the potential to impose limitations on the reproductive longevity and fecundity of free-ranging male koalas.

Abomasal nematodes from three Norwegian wild reindeer populations

1987 ◽  
Vol 65 (3) ◽  
pp. 677-680 ◽  
Author(s):  
Karstein Bye
Keyword(s):  
Life History ◽  
Physical Condition ◽  
Rangifer Tarandus ◽  
Host Population ◽  
Intensity Of Infection ◽  
Mean Intensity ◽  
Life History Parameters ◽  
Teladorsagia Circumcincta ◽  
The Mean ◽  
Wild Reindeer

Three separate populations of wild reindeer (Rangifer tarandus tarandus L.) in Norway were examined for the presence of abomasal nematodes. The following six species were recorded: Ostertagia grühneri, Skrjabinagia arctica, Trichostrongylus axei, Teladorsagia circumcincta, Teladorsagia davtiani, and Nematodirus tarandi. Ostertagia grühneri dominated both in prevalence and intensity of infection. Teladorsagia davtiani occurred in only one of the populations investigated, and N. tarandi was found in calves only. Reindeer and sheep grazed the same areas, but no evidence of transfer of parasites from sheep to reindeer was found. All 72 adult reindeer and 10 calves examined during February–April harboured adult abomasal nematodes. The mean intensity of abomasal nematodes was highest in the population with the highest density of reindeer. Reindeer from this population were in poor physical condition. The influence of abomasal nematodes on life-history parameters of the host population is discussed.

scholarly journals The Effects of Food Limitation on Life History Tradeoffs in Pregnant Male Gulf Pipefish

PLoS ONE ◽  
2015 ◽  
Vol 10 (5) ◽  
pp. e0124147 ◽  
Author(s):  
Kimberly A. Paczolt ◽  
Adam G. Jones
Keyword(s):  
Life History ◽  
Food Limitation ◽  
Life History Tradeoffs

scholarly journals Intergenerational Effects of Early Life Starvation on Life-History, Consumption, and Transcriptome of a Holometabolous Insect

2021 ◽  
Author(s):  
Sarah Catherine Paul ◽  
Pragya Singh ◽  
Alice B. Dennis ◽  
Caroline Müller
Keyword(s):  
Life History ◽  
Early Life ◽  
Life History Traits ◽  
Life Stage ◽  
Food Limitation ◽  
Parental Effects ◽  
Intergenerational Effects ◽  
Holometabolous Insect ◽  
Parental Phenotype ◽  
Starvation Conditions

ABSTRACTIntergenerational effects, also known as parental effects in which the offspring phenotype is influenced by the parental phenotype, can occur in response to parental early life food-limitation and adult reproductive environment. However, little is known about how these parental life stage-specific environments interact with each other and with the offspring environment to influence offspring phenotype, particularly in organisms that realize distinct niches across ontogeny. We examined the effects of parental early life starvation and adult reproductive environment on offspring traits under matching or mismatching offspring early life starvation conditions using the holometabolous, haplo-diploid insect Athalia rosae (turnip sawfly). We show that the parental early life starvation treatment had context-dependent intergenerational effects on the life-history and consumption traits of offspring larvae, partly in interaction with offspring conditions and sex, while there was no significant effect of parental adult reproductive environment. In addition, while offspring larval starvation led to numerous gene- and pathway-level expression differences, parental starvation impacted fewer genes and only the ribosomal pathway. Our findings reveal that parental starvation evokes complex intergenerational effects on offspring life-history traits, consumption patterns as well as gene expression, although the effects are less pronounced than those of offspring starvation.

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