scholarly journals Temperature and acidification variability reduce physiological performance in the intertidal zone porcelain crab Petrolisthes cinctipes

2014 ◽  
Vol 217 (22) ◽  
pp. 3974-3980 ◽  
Author(s):  
A. W. Paganini ◽  
N. A. Miller ◽  
J. H. Stillman
Keyword(s):  
Intertidal Zone ◽  
Physiological Performance ◽  
Petrolisthes Cinctipes ◽  
Porcelain Crab

scholarly journals Multiple paternity in the intertidal zone porcelain crab Petrolisthes cinctipes Randall, 1840 (Decapoda: Anomura: Porcellanidae) is a life-history strategy that increases fitness during heat stress

2020 ◽  
Vol 40 (6) ◽  
pp. 684-691
Author(s):  
Thomas Yockachonis ◽  
C Seabird McKeon ◽  
Amanda M Windsor ◽  
Jonathon H Stillman
Keyword(s):  
Heat Shock ◽  
Intertidal Zone ◽  
Multiple Paternity ◽  
Life History Strategy ◽  
Relative Fitness ◽  
Ambient Conditions ◽  
Embryo Survival ◽  
Hatching Percentage ◽  
Petrolisthes Cinctipes ◽  
Porcelain Crab

Abstract Multiple paternity is widespread across animal and plant taxa and can increase genetic diversity and enhance fitness, especially in unpredictable environments. A prior study of the intertidal zone porcelain crab, Petrolisthes cinctipes (Randall, 1840), found that most females carried polyandrous broods. We tested the hypothesis that multiple paternity in P. cinctipes enhances fitness through increased average brood tolerance to temperature stress. Embryonic survival of split broods (N = 27) was measured under ambient conditions and following a single one-hour heat shock at 30 °C. Two microsatellite loci were used to genotype embryos and mothers in order to distinguish multiple from single paternity in each brood. Mean overall hatching percentage did not differ between singly and multiply sired broods; however, when exposed to a heat-shock, single-sired broods experienced 11% lower hatching success. Though relative fitness was higher in single-sired broods under non-stressful conditions, extrapolation of our results to conditions where temperatures are at least 30 °C (present-day extremes for the California coast) for > 2 days of the embryonic brood period, multiply sired broods have a relative fitness that is approximately 24 times higher after 15 generations. Maternal quality (size) and the timing of the heat shock relative to developmental timing also influence the brood response to heat shock. Our results suggest that multiple paternity reduces embryo survival variance between ambient and heat-shock conditions and that polyandrous behavior could be an advantage for P. cinctipes in the thermally variable high-intertidal zone. We conclude that multiple paternity is an important strategy for increasing fitness by genetic diversification in organisms that experience severe and unpredictable levels of environmental stress.

scholarly journals Construction and characterization of EST libraries from the porcelain crab, Petrolisthes cinctipes

2006 ◽  
Vol 46 (6) ◽  
pp. 919-930 ◽  
Author(s):  
J. H. Stillman ◽  
K. S. Teranishi ◽  
A. Tagmount ◽  
E. A. Lindquist ◽  
P. B. Brokstein
Keyword(s):  
Petrolisthes Cinctipes ◽  
Porcelain Crab
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