scholarly journals The plastic fly: the effect of sustained fluctuations in adult food supply on life‐history traits

2014 ◽  
Vol 27 (11) ◽  
pp. 2322-2333 ◽  
Author(s):  
J. Heuvel ◽  
J. Zandveld ◽  
M. Mulder ◽  
P. M. Brakefield ◽  
T. B. L. Kirkwood ◽  
...  
Keyword(s):  
Life History ◽  
Food Supply ◽  
Life History Traits ◽  
Adult Food

scholarly journals Differential Effects of Larval and Adult Nutrition on Survival, Fecundity, and Size of the Yellow Fever Mosquito Aedes Aegypti

2020 ◽  
Author(s):  
Jiayue Yan ◽  
Roumaissa Kibech ◽  
Chris M. Stone
Keyword(s):  
Life History ◽  
Aedes Aegypti ◽  
Yellow Fever ◽  
Life History Traits ◽  
Positive Relationship ◽  
Sucrose Concentration ◽  
Severe Illness ◽  
Yellow Fever Mosquito ◽  
Larval Food ◽  
Adult Food

Abstract Background: The yellow fever mosquito, Aedes aegypti, is the principal vector of multiple infectious pathogens that can cause severe illness such as dengue fever, yellow fever and Zika. Their transmission potential for these arboviruses is largely shaped by their life history traits, such as their survival and fecundity. These life history traits depend on environmental conditions, such as larval and adult nutrition (e.g., nectar availability). Both these types of nutrition are known to affect the energetic reserves and life history traits of adults, but whether and how nutrition obtained during different stages have an interactive influence on mosquito life history traits remains largely unknown. Results: Here, we experimentally manipulated both larval and adult diets to create four nutritional levels, that is, a high amount of larval food plus poor (weak concentration of sucrose) adult food: HL+PA, high larval plus good (normal sucrose concentration) adult food: HL+GA, low larval plus poor adult food: LL+PA and low larval plus good adult food: LL+GA. We then compared the size, survival and fecundity of mosquitoes reared from these nutritional regimes. We found that larval and adult nutrition affected mosquito size and survival, respectively, without interactions, while both larval and adult nutrition synergistically influenced mosquito fecundity. There was a positive relationship between mosquito size and fecundity. In addition, this positive relationship was not affected by nutrition. Conclusions: These findings highlight how larval and adult nutrition differentially influence mosquito life history traits, suggesting that studies evaluating nutritional effects on vectorial capacity traits should account for environmental variation across life stages.

scholarly journals Differential Effects of Larval and Adult Nutrition on Survival, Fecundity, and Size of the Yellow Fever Mosquito Aedes Aegypti

2020 ◽  
Author(s):  
Jiayue Yan ◽  
Roumaissa Kibech ◽  
Chris M. Stone
Keyword(s):  
Life History ◽  
Aedes Aegypti ◽  
Yellow Fever ◽  
Life History Traits ◽  
Positive Relationship ◽  
Sucrose Concentration ◽  
Severe Illness ◽  
Yellow Fever Mosquito ◽  
Larval Food ◽  
Adult Food

Abstract Background: The yellow fever mosquito, Aedes aegypti, is the principal vector of multiple infectious pathogens that can cause severe illness such as dengue fever, yellow fever and Zika. Their transmission potential for these arboviruses is largely shaped by their life history traits, such as their survival and fecundity. These life history traits depend on environmental conditions, such as larval and adult nutrition (e.g., nectar availability). Both these types of nutrition are known to affect the energetic reserves and life history traits of adults, but whether and how nutrition obtained during different stages have an interactive influence on mosquito life history traits remains largely unknown. Methods: Here, we experimentally manipulated both larval and adult diets to create four nutritional levels, that is, a high amount of larval food plus poor (weak concentration of sucrose) adult food: HL+PA, high larval plus good (normal sucrose concentration) adult food: HL+GA, low larval plus poor adult food: LL+PA and low larval plus good adult food: LL+GA. We then compared the size, survival and fecundity of mosquitoes reared from these nutritional regimes. Results: We found that larval and adult nutrition affected mosquito size and survival, respectively, without interactions, while both larval and adult nutrition synergistically influenced mosquito fecundity. There was a positive relationship between mosquito size and fecundity. In addition, this positive relationship was not affected by nutrition. Conclusions: These findings highlight how larval and adult nutrition differentially influence mosquito life history traits, suggesting that studies evaluating nutritional effects on vectorial capacity traits should account for environmental variation across life stages.

scholarly journals Differential effects of larval and adult nutrition on female survival, fecundity, and size of the yellow fever mosquito, Aedes aegypti

2020 ◽  
Author(s):  
Jiayue Yan ◽  
Roumaissa Kibech ◽  
Chris M. Stone
Keyword(s):  
Life History ◽  
Aedes Aegypti ◽  
Yellow Fever ◽  
Life History Traits ◽  
Positive Relationship ◽  
Sucrose Concentration ◽  
Severe Illness ◽  
Yellow Fever Mosquito ◽  
Larval Food ◽  
Adult Food

Abstract Background: The yellow fever mosquito, Aedes aegypti, is the principal vector of medically-important infectious viruses that cause severe illness such as dengue fever, yellow fever and Zika. The transmission potential of mosquitoes for these arboviruses is largely shaped by their life history traits, such as size, survival and fecundity. These life history traits, to some degree, depend on environmental conditions, such as larval and adult nutrition (e.g., nectar availability). Both these types of nutrition are known to affect the energetic reserves and life history traits of adults, but whether and how nutrition obtained during larval and adult stages have an interactive influence on mosquito life history traits remains largely unknown. Results: Here, we experimentally manipulated both larval and adult diets to create four nutritional levels, that is, a high amount of larval food plus poor (weak concentration of sucrose) adult food: HL+PA, high larval plus good (normal sucrose concentration) adult food: HL+GA, low larval plus poor adult food: LL+PA and low larval plus good adult food: LL+GA. We then compared the size, survival and fecundity of female mosquitoes reared from these nutritional regimes. We found that larval and adult nutrition affected size and survival, respectively, without interactions, while both larval and adult nutrition synergistically influenced fecundity. There was a positive relationship between size and fecundity. In addition, this positive relationship was not affected by nutrition. Conclusions: These findings highlight how larval and adult nutrition differentially influence female mosquito life history traits, suggesting that studies evaluating nutritional effects on vectorial capacity traits should account for environmental variation across life stages.

scholarly journals Erratum - Daphnia magna fitness during low food supply under different water temperature and brownification scenarios

2018 ◽  
Vol 77 (2) ◽  
Author(s):  
Andrea Gall ◽  
Martin J. Kanz ◽  
Serena Rasconi
Keyword(s):  
Life History ◽  
Water Temperature ◽  
Daphnia Magna ◽  
Growth Rates ◽  
Food Supply ◽  
Life History Traits ◽  
Somatic Growth

This corrects the article entitled “Daphnia magna fitness during low food supply under different water temperature and brownification scenarios" by the authors Andrea Gall, Martin J. Kainz and Serena Rasconi, published with DOI 10.4081/jlimnol.2016.1450. The data on somatic growth rates reported in the results section, paragraph "Life history traits", page 165, were incorrect and the rectified data are presented. Figure 4 has also been corrected accordingly.

Prey tell: what quillback rockfish early life history traits reveal about their survival in encounters with juvenile coho salmon

2020 ◽  
Vol 650 ◽  
pp. 7-18 ◽  
Author(s):  
HW Fennie ◽  
S Sponaugle ◽  
EA Daly ◽  
RD Brodeur
Keyword(s):  
Life History ◽  
Early Life ◽  
Life History Traits ◽  
Direct Evidence ◽  
Coho Salmon ◽  
Larval Fish ◽  
Early Life History ◽  
In The Wild ◽  
Otolith Microstructure Analysis ◽  
Pelagic Juvenile

Predation is a major source of mortality in the early life stages of fishes and a driving force in shaping fish populations. Theoretical, modeling, and laboratory studies have generated hypotheses that larval fish size, age, growth rate, and development rate affect their susceptibility to predation. Empirical data on predator selection in the wild are challenging to obtain, and most selective mortality studies must repeatedly sample populations of survivors to indirectly examine survivorship. While valuable on a population scale, these approaches can obscure selection by particular predators. In May 2018, along the coast of Washington, USA, we simultaneously collected juvenile quillback rockfish Sebastes maliger from both the environment and the stomachs of juvenile coho salmon Oncorhynchus kisutch. We used otolith microstructure analysis to examine whether juvenile coho salmon were age-, size-, and/or growth-selective predators of juvenile quillback rockfish. Our results indicate that juvenile rockfish consumed by salmon were significantly smaller, slower growing at capture, and younger than surviving (unconsumed) juvenile rockfish, providing direct evidence that juvenile coho salmon are selective predators on juvenile quillback rockfish. These differences in early life history traits between consumed and surviving rockfish are related to timing of parturition and the environmental conditions larval rockfish experienced, suggesting that maternal effects may substantially influence survival at this stage. Our results demonstrate that variability in timing of parturition and sea surface temperature leads to tradeoffs in early life history traits between growth in the larval stage and survival when encountering predators in the pelagic juvenile stage.

Life History Traits in a Population of Pelobates syriacus (Boettger, 1889) from Turkey

2020 ◽  
Vol 27 (4) ◽  
pp. 195-200
Author(s):  
Ufuk Bülbül ◽  
Halime Koç ◽  
Yasemin Odabaş ◽  
Ali İhsan Eroğlu ◽  
Muammer Kurnaz ◽  
...  
Keyword(s):  
Life History ◽  
Age Structure ◽  
Life History Traits ◽  
Spadefoot Toad ◽  
Males And Females

Age structure of the eastern spadefoot toad, Pelobates syriacus from the Kızılırmak Delta (Turkey) were assessed using phalangeal skeletochronology. Snout-vent length (SVL) ranged from 42.05 to 86.63 mm in males and 34.03 to 53.27 mm in females. Age of adults ranged from 2 to 8 years in males and 3 to 5 years in females. For both sexes, SVL was significantly correlated with age. Males and females of the toads reached maturity at 2 years of age.

Sign in / Sign up

Export Citation Format

Share Document