Natural variation in life history and aging phenotypes is associated with mitochondrial DNA deletion frequency in Caenorhabditis briggsae

Table 1 Phenotypic variation among C. briggsa e isolates

Character	Grand mean	SD	N	df	F	ρ
Early fecundity	31.99 surviving offspring	20.86	210	8	13.26***	-0.432**
Late fecundity	103.8 surviving offspring	58.03	210	8	14.93***	-0.482**
Total fecundity	135.7 surviving offspring	66.74	210	8	22.89***	-0.554***
Intrinsic rate of increase (r)	0.808	0.250	210	8	17.93***	-0.426***
Total lifespan	16.96 days	6.358	160	8	5.192***	-0.228***
Pharyngeal pumping	181.6 pumps/min	79.99	110	8	8.215***	-0.582***
ATP content	4.499 nM/mg protein	1.545	85	8	25.09***	-0.120
Paraquat resistance	61.03 min	21.70	127	8	7.139***	-0.204***
Superoxide level	224.20 relative fluorescence units	18.55	99	8	8.388***	0.119

Grand means, standard deviations, and sample sizes for all traits measured. F is the test statistic for one-way analyses of variance for each phenotype in C. briggsae isolates. ρ is the Pearson correlation coefficient between isolate-specific trait means and deletion frequencies. *, **, and *** denote significance at the 0.05, 0.01, and 0.001 levels, respectively.

ISSN: 2730-7182