Unshelled abalone and corrupted urchins: development of marine calcifiers in a changing ocean

被引:150
作者
Byrne, Maria [1 ,2 ]
Ho, Melanie [1 ]
Wong, Eunice [1 ]
Soars, Natalie A. [1 ]
Selvakumaraswamy, Paulina [1 ]
Shepard-Brennand, Hannah [1 ]
Dworjanyn, Symon A. [3 ]
Davis, Andrew R. [4 ]
机构
[1] Univ Sydney, Sch Med Sci, Sydney, NSW 2006, Australia
[2] Univ Sydney, Sch Biol Sci, Sydney, NSW 2006, Australia
[3] So Cross Univ, Natl Marine Sci Ctr, Lismore, NSW 2450, Australia
[4] Univ Wollongong, Inst Conservat Biol, Wollongong, NSW 2522, Australia
关键词
climate change; ocean warming; ocean acidification; calcification; sea urchin; abalone; CLIMATE-CHANGE; LECITHOTROPHIC LARVAE; CALCIUM-CARBONATE; ACIDIFICATION; CO2; FUTURE; TEMPERATURE; ECHINOIDEA; GROWTH; CALCIFICATION;
D O I
10.1098/rspb.2010.2404
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
The most fragile skeletons produced by benthic marine calcifiers are those that larvae and juveniles make to support their bodies. Ocean warming, acidification, decreased carbonate saturation and their interactive effects are likely to impair skeletogenesis. Failure to produce skeleton in a changing ocean has negative implications for a diversity of marine species. We examined the interactive effects of warming and acidification on an abalone (Haliotis coccoradiata) and a sea urchin (Heliocidaris erythrogramma) reared from fertilization in temperature and pH/pCO(2) treatments in a climatically and regionally relevant setting. Exposure of ectodermal (abalone) and mesodermal (echinoid) calcifying systems to warming (+2 degrees C to 4 degrees C) and acidification (pH 7.6-7.8) resulted in unshelled larvae and abnormal juveniles. Haliotis development was most sensitive with no interaction between stressors. For Heliocidaris, the percentage of normal juveniles decreased in response to both stressors, although a +2 degrees C warming diminished the negative effect of low pH. The number of spines produced decreased with increasing acidification/pCO(2), and the interactive effect between stressors indicated that a +2 degrees C warming reduced the negative effects of low pH. At +4 degrees C, the developmental thermal tolerance was breached. Our results show that projected near-future climate change will have deleterious effects on development with differences in vulnerability in the two species.
引用
收藏
页码:2376 / 2383
页数:8
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