Document Detail


Do Gravid Females Become Selfish? Female Allocation of Energy during Gestation.
MedLine Citation:
PMID:  22494979     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Abstract Net energy availability depends on plasma corticosterone concentrations, food availability, and their interaction. Limited net energy availability requires energy trade-offs between self-maintenance and reproduction. This is important in matrotrophic viviparous animals because they provide large amounts of energy for embryos, as well as self-maintenance, for the extended period of time during gestation. In addition, gravid females may transmit environmental information to the embryos in order to adjust offspring phenotype. We investigated effects of variation in maternal plasma corticosterone concentration and maternal food availability (2 × 2 factorial design) during gestation on offspring phenotype in a matrotrophic viviparous lizard (Pseudemoia entrecasteauxii). Subsequently, we tested preadaptation of offspring phenotype to their postnatal environment by measuring risk-averse behavior and growth rate using reciprocal transplant experiments. We found that maternal net energy availability affected postpartum maternal body condition, offspring snout-vent length, offspring mass, offspring performance ability, and offspring fat reserves. Females treated with corticosterone allocated large amounts of energy to their own body condition, and their embryos allocated more energy to energy reserves than somatic growth. Further, offspring from females in high plasma corticosterone concentration showed compensatory growth. These findings suggest that while females may be selfish when gestation conditions are stressful, the embryos may adjust their phenotype to cope with the postnatal environment.
Authors:
Keisuke Itonaga; Susan M Jones; Erik Wapstra
Related Documents :
16597559 - Organizational issues related to satisfaction with food and food service in the nursing...
6827009 - Dietetic technicians' performance: supervisory and self-assessments.
22124449 - Leanness in postnatally nutritionally programmed rats is associated with increased sens...
19024429 - Hot tea and juk: the institutional meaning of food for chinese elders in an american nu...
6643879 - Graduate education in food service systems management: clarifying the focus.
20438049 - Food expectations-long term care spanish questionnaire.
11053529 - Zinc and copper intakes and their major food sources for older adults in the 1994-96 co...
11409299 - Bioavailability of iodine from normal diets rich in dairy products--results of balance ...
11470719 - Use of biological markers to validate self-reported dietary intake in a random sample o...
Publication Detail:
Type:  Journal Article     Date:  2012-04-03
Journal Detail:
Title:  Physiological and biochemical zoology : PBZ     Volume:  85     ISSN:  1537-5293     ISO Abbreviation:  Physiol. Biochem. Zool.     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-04-12     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100883369     Medline TA:  Physiol Biochem Zool     Country:  United States    
Other Details:
Languages:  eng     Pagination:  231-42     Citation Subset:  IM    
Affiliation:
School of Zoology, Private Bag 05, University of Tasmania, Hobart, Tasmania 7001, Australia.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Temporal and spatial complexity of maternal thermoregulation in tropical pythons.
Next Document:  Dynamic Influence of Maternal and Pup Traits on Maternal Care during Lactation in an Income Breeder,...