Persistent effects of maternal parasitic infection on offspring fitness: implications for adaptive reproductive strategies when parasitized

Lisa Schwanz

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

1. Maternal effects on offspring phenotype may represent adaptive strategies to optimize maternal or offspring fitness given the maternal environment. The effect of maternal parasitic infection on offspring phenotype has been largely ignored, despite the potential for such effects to be components of a maternal reproductive strategy. In addition, the persistence and fitness consequences of maternal effects are understudied, particularly with respect to research on maternal parasitic infection. 2. Deer mice (Peromyscus maniculatus) increase reproductive output by weaning heavier offspring when infected with a schistosome parasite (Schistosomatium douthitti). Here, I examine the persistence of maternal effects on offspring phenotype and evaluate potential consequences of maternal parasitic infection for offspring lifetime fitness. 3. Offspring of parasitized females are born heavier, and this mass advantage persists in sons until adulthood. Because adult body mass is known to influence adult reproductive success in deer mice, parasitized mothers would have produced sons of higher reproductive success. 4. Neither maternal infection nor offspring mass influenced adult son aggression. Survival was enhanced for heavier offspring post-weaning. 5. The production of heavier offspring by parasitized females, therefore, led to increased offspring fitness through enhanced survival and potentially reproductive success. The resultant increase in current maternal reproductive success in response to possible infection-induced decreases in future reproductive opportunities supports the hypothesis that infected females trade-off between current and future reproduction.
Original languageEnglish
Pages (from-to)691-698
Number of pages8
JournalFunctional Ecology
Volume22
DOIs
Publication statusPublished - 2008
Externally publishedYes

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parasitoses
maternal effect
reproductive strategy
fitness
reproductive success
phenotype
Peromyscus
deer
persistence
Peromyscus maniculatus
Schistosoma
weaning
aggression
adulthood
infection
body mass
trade-off
reproductive performance
parasite
parasites

Cite this

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title = "Persistent effects of maternal parasitic infection on offspring fitness: implications for adaptive reproductive strategies when parasitized",
abstract = "1. Maternal effects on offspring phenotype may represent adaptive strategies to optimize maternal or offspring fitness given the maternal environment. The effect of maternal parasitic infection on offspring phenotype has been largely ignored, despite the potential for such effects to be components of a maternal reproductive strategy. In addition, the persistence and fitness consequences of maternal effects are understudied, particularly with respect to research on maternal parasitic infection. 2. Deer mice (Peromyscus maniculatus) increase reproductive output by weaning heavier offspring when infected with a schistosome parasite (Schistosomatium douthitti). Here, I examine the persistence of maternal effects on offspring phenotype and evaluate potential consequences of maternal parasitic infection for offspring lifetime fitness. 3. Offspring of parasitized females are born heavier, and this mass advantage persists in sons until adulthood. Because adult body mass is known to influence adult reproductive success in deer mice, parasitized mothers would have produced sons of higher reproductive success. 4. Neither maternal infection nor offspring mass influenced adult son aggression. Survival was enhanced for heavier offspring post-weaning. 5. The production of heavier offspring by parasitized females, therefore, led to increased offspring fitness through enhanced survival and potentially reproductive success. The resultant increase in current maternal reproductive success in response to possible infection-induced decreases in future reproductive opportunities supports the hypothesis that infected females trade-off between current and future reproduction.",
keywords = "fecundity compensation, phenotypic plasticity, rodent, terminal investment, trematode.",
author = "Lisa Schwanz",
year = "2008",
doi = "10.1111/j.1365-2435.2008.01397.x",
language = "English",
volume = "22",
pages = "691--698",
journal = "Functional Ecology",
issn = "0269-8463",
publisher = "Wiley-Blackwell",

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TY - JOUR

T1 - Persistent effects of maternal parasitic infection on offspring fitness: implications for adaptive reproductive strategies when parasitized

AU - Schwanz, Lisa

PY - 2008

Y1 - 2008

N2 - 1. Maternal effects on offspring phenotype may represent adaptive strategies to optimize maternal or offspring fitness given the maternal environment. The effect of maternal parasitic infection on offspring phenotype has been largely ignored, despite the potential for such effects to be components of a maternal reproductive strategy. In addition, the persistence and fitness consequences of maternal effects are understudied, particularly with respect to research on maternal parasitic infection. 2. Deer mice (Peromyscus maniculatus) increase reproductive output by weaning heavier offspring when infected with a schistosome parasite (Schistosomatium douthitti). Here, I examine the persistence of maternal effects on offspring phenotype and evaluate potential consequences of maternal parasitic infection for offspring lifetime fitness. 3. Offspring of parasitized females are born heavier, and this mass advantage persists in sons until adulthood. Because adult body mass is known to influence adult reproductive success in deer mice, parasitized mothers would have produced sons of higher reproductive success. 4. Neither maternal infection nor offspring mass influenced adult son aggression. Survival was enhanced for heavier offspring post-weaning. 5. The production of heavier offspring by parasitized females, therefore, led to increased offspring fitness through enhanced survival and potentially reproductive success. The resultant increase in current maternal reproductive success in response to possible infection-induced decreases in future reproductive opportunities supports the hypothesis that infected females trade-off between current and future reproduction.

AB - 1. Maternal effects on offspring phenotype may represent adaptive strategies to optimize maternal or offspring fitness given the maternal environment. The effect of maternal parasitic infection on offspring phenotype has been largely ignored, despite the potential for such effects to be components of a maternal reproductive strategy. In addition, the persistence and fitness consequences of maternal effects are understudied, particularly with respect to research on maternal parasitic infection. 2. Deer mice (Peromyscus maniculatus) increase reproductive output by weaning heavier offspring when infected with a schistosome parasite (Schistosomatium douthitti). Here, I examine the persistence of maternal effects on offspring phenotype and evaluate potential consequences of maternal parasitic infection for offspring lifetime fitness. 3. Offspring of parasitized females are born heavier, and this mass advantage persists in sons until adulthood. Because adult body mass is known to influence adult reproductive success in deer mice, parasitized mothers would have produced sons of higher reproductive success. 4. Neither maternal infection nor offspring mass influenced adult son aggression. Survival was enhanced for heavier offspring post-weaning. 5. The production of heavier offspring by parasitized females, therefore, led to increased offspring fitness through enhanced survival and potentially reproductive success. The resultant increase in current maternal reproductive success in response to possible infection-induced decreases in future reproductive opportunities supports the hypothesis that infected females trade-off between current and future reproduction.

KW - fecundity compensation

KW - phenotypic plasticity

KW - rodent

KW - terminal investment

KW - trematode.

U2 - 10.1111/j.1365-2435.2008.01397.x

DO - 10.1111/j.1365-2435.2008.01397.x

M3 - Article

VL - 22

SP - 691

EP - 698

JO - Functional Ecology

JF - Functional Ecology

SN - 0269-8463

ER -