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Figure 1. Mean daily temperature (°C) for the duration of the experiment. Effects of high pCO2 on Tanner crab reproduction and early life history—Part.

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Presentation on theme: "Figure 1. Mean daily temperature (°C) for the duration of the experiment. Effects of high pCO2 on Tanner crab reproduction and early life history—Part."— Presentation transcript:

1 Figure 1. Mean daily temperature (°C) for the duration of the experiment.
Effects of high pCO2 on Tanner crab reproduction and early life history—Part I: long-term exposure reduces hatching success and female calcification, and alters embryonic development ICES J Mar Sci. 2015;73(3): doi: /icesjms/fsv201 ICES J Mar Sci | Published by Oxford University Press on behalf of International Council for the Exploration of the Sea This work is written by (a) US Government employee(s) and is in the public domain in the US.

2 Figure 2. Tanner crab egg, embryo, yolk, and eye sections measured for embryonic morphometric analysis. Effects of high pCO2 on Tanner crab reproduction and early life history—Part I: long-term exposure reduces hatching success and female calcification, and alters embryonic development ICES J Mar Sci. 2015;73(3): doi: /icesjms/fsv201 ICES J Mar Sci | Published by Oxford University Press on behalf of International Council for the Exploration of the Sea This work is written by (a) US Government employee(s) and is in the public domain in the US.

3 Figure 3. Comparison of Tanner crab mean embryo stage by pH treatment for (a) year 1 and (b) 2 of the experiment. See Table 2 for embryo stage descriptions. Values are means and vertical bars represent standard errors. Effects of high pCO2 on Tanner crab reproduction and early life history—Part I: long-term exposure reduces hatching success and female calcification, and alters embryonic development ICES J Mar Sci. 2015;73(3): doi: /icesjms/fsv201 ICES J Mar Sci | Published by Oxford University Press on behalf of International Council for the Exploration of the Sea This work is written by (a) US Government employee(s) and is in the public domain in the US.

4 Figure 4. Average principal component (PC) 1 and 2 scores ± standard errors for Tanner crab embryos measured monthly during (a) year 1 and (b) year 2. The scores were averaged among females within each treatment, so sample size varied with the number of females surviving each month and varied from 16 at the beginning of the experiment to as low as 6 in the pH 7.8 treatment at the end. PC1 is associated with embryo maturity and PC2 is associated with egg and embryo size. Every other month is labelled. When there were significant differences among treatments within a month, it is indicated with asterisks for PC1 and an hash for PC2. When there were differences among the treatments in all months, it is indicated in the figure legend using the same symbols; treatments with the different letters next to them are significantly different. Effects of high pCO2 on Tanner crab reproduction and early life history—Part I: long-term exposure reduces hatching success and female calcification, and alters embryonic development ICES J Mar Sci. 2015;73(3): doi: /icesjms/fsv201 ICES J Mar Sci | Published by Oxford University Press on behalf of International Council for the Exploration of the Sea This work is written by (a) US Government employee(s) and is in the public domain in the US.

5 Figure 5. Comparison of the mean number of viable Tanner crab larvae hatched by pH treatment in (a) year 1 and (b) year 2. Bars are mean with standard error. Bars with different letters above them differ significantly. Effects of high pCO2 on Tanner crab reproduction and early life history—Part I: long-term exposure reduces hatching success and female calcification, and alters embryonic development ICES J Mar Sci. 2015;73(3): doi: /icesjms/fsv201 ICES J Mar Sci | Published by Oxford University Press on behalf of International Council for the Exploration of the Sea This work is written by (a) US Government employee(s) and is in the public domain in the US.

6 Figure 6. Comparison of the mean per cent viable Tanner crab larvae hatched, non-viable larvae hatched, and eggs that did not hatch in year 1 and year 2 among ambient, pH 7.8, and pH 7.5 treatments. Effects of high pCO2 on Tanner crab reproduction and early life history—Part I: long-term exposure reduces hatching success and female calcification, and alters embryonic development ICES J Mar Sci. 2015;73(3): doi: /icesjms/fsv201 ICES J Mar Sci | Published by Oxford University Press on behalf of International Council for the Exploration of the Sea This work is written by (a) US Government employee(s) and is in the public domain in the US.

7 Figure 7. Daily percentage survival of female Tanner crab by treatment for the 2-year experiment.
Effects of high pCO2 on Tanner crab reproduction and early life history—Part I: long-term exposure reduces hatching success and female calcification, and alters embryonic development ICES J Mar Sci. 2015;73(3): doi: /icesjms/fsv201 ICES J Mar Sci | Published by Oxford University Press on behalf of International Council for the Exploration of the Sea This work is written by (a) US Government employee(s) and is in the public domain in the US.

8 Figure 8. Comparison of the mean (a) per cent dry weight calcium, (b) per cent dry weight magnesium, and (c) magnesium calcium ratio from carapaces of female Tanner crab reared in ambient, 7.8 pH and 7.5 pH treatments for 2 years. Bars are mean with standard error. Bars with different letters above them differ significantly. Effects of high pCO2 on Tanner crab reproduction and early life history—Part I: long-term exposure reduces hatching success and female calcification, and alters embryonic development ICES J Mar Sci. 2015;73(3): doi: /icesjms/fsv201 ICES J Mar Sci | Published by Oxford University Press on behalf of International Council for the Exploration of the Sea This work is written by (a) US Government employee(s) and is in the public domain in the US.

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