Initial offspring size mediates trade-off between fecundity and longevity in the field

Kesselring, Halil, Wheatley, Rebecca and Marshall, Dustin J. (2012) Initial offspring size mediates trade-off between fecundity and longevity in the field. Marine Ecology - Progress Series, 465 129-136. doi:10.3354/meps09865


Author Kesselring, Halil
Wheatley, Rebecca
Marshall, Dustin J.
Title Initial offspring size mediates trade-off between fecundity and longevity in the field
Journal name Marine Ecology - Progress Series   Check publisher's open access policy
ISSN 0171-8630
1616-1599
Publication date 2012-09
Sub-type Article (original research)
DOI 10.3354/meps09865
Open Access Status DOI
Volume 465
Start page 129
End page 136
Total pages 8
Place of publication Oldendorf, Germany
Publisher Inter-Research
Collection year 2013
Language eng
Abstract An understanding of the effects of intraspecific variation in offspring size is important from both an ecological and an evolutionary perspective. While the relationship between offspring size and overall offspring performance is key, most studies are restricted to examination of the effects of offspring size on early life-history stages only, and too few have examined the effects of offspring size throughout the life history. Here, we examine the effects of offspring size on post-metamorphic survival, growth, and fecundity under field conditions for the polychaete Janua sp. Larger offspring became larger adults and had higher levels of fecundity than those from smaller offspring, though the effect on fecundity was weaker and more variable over different experimental runs. Adults derived from larger larvae had shorter lifespans than adults derived from smaller larvae. Our results suggest that the maternal effect of offspring size can influence the frequently observed trade-off between longevity and fecundity. Future studies should seek to measure the effects of offspring size over as much of the life history as possible in order to avoid misestimating the relationship between offspring size and fitness.
Keyword Maternal effect
Egg size
Larval quality
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Biological Sciences Publications
 
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