Ecological Archives E095-110-A1

Karen E. Arthur, Shaleyla Kelez, Thomas Larsen, C. Anela Choy, Brian N. Popp. 2014. Tracing the biosynthetic source of essential amino acids in marine turtles using δ13C fingerprints. Ecology 95:1285–1293. http://dx.doi.org/10.1890/13-0263.1

Appendix A. Detailed isotope data for marine turtles and pelagic fish.

Table A1. Carbon and nitrogen isotopic compositions of marine turtle bulk tissue and amino acids and relative trophic position calculated from the nitrogen isotopic values of glutamic acid (Glu) and phenylalanine (Phe). Values are the mean of at least three replicate analyses (standard deviation). Essential amino acids: threonine (Thr), valine (Val), leucine (Leu), Isoleucine (Iso), phenylalanine (Phe), lysine (Lys).

Spp.1
ID

Digestive
strategy2

Tissue type

Length3
(cm)

δ13C (‰)

δ15N (‰)

Bulk

Thr

Val

Leu

Ile

Phe

Lys

Bulk

Glu

Phe

TP(Glu/Phe)

Hawaii - Inshore

 

 

 

 

 

 

 

 

 

 

 

 

Cm1

HGF

Muscle

47.7

-14.7

-5.0 (1.8)

-20.4 (0.7)

-18.6 (0.4)

-11.9 (0.6)

-18.7 (1.0)

-13.4 (0.7)

7.1

14.4 (1.1)

4.9 (0.0)

1.8

Cm2

HGF

Muscle

49.9

-12.9

-5.5 (1.0)

-19.5 (0.6)

-18.0 (0.5)

-12.1 (0.3)

-15.4 (0.8)

-12.5 (0.9)

5.8

8.6 (0.0)

4.4 (0.4)

1.1

Cm3

HGF

Muscle

51.8

-17.4

-10.7 (0.6)

-24.0 (1.0)

-22.9 (0.9)

-15.2 (0.4)

-21.8 (1.0)

-18.4 (0.8)

7.6

12.8 (0.2)

4.2 (0.5)

1.7

Cm4

HGF

Muscle

52.2

-15.0

-8.0 (0.6)

-22.0 (0.4)

-20.1 (0.3)

-12.8 (1.0)

-19.2 (0.5)

-15.5 (0.5)

9.8

15.7 (0.5)

7.3 (0.9)

1.7

Central Pacific - Oceanic

 

 

 

 

 

 

 

 

 

 

 

 

Cm5

nHGF

Muscle

38.0

-16.7

-4.6 (0.7)

-23.6 (0.6)

-23.8 (0.4)

-12.9 (0.1)

-22.8 (0.5)

-17.6 (0.3)

15.0

24.7 (0.6)

9.5 (0.2)

2.5

Cm6

nHGF

Muscle

47.4

-16.3

-3.6 (1.5)

-23.2 (0.4)

-24.6 (0.4)

-13.0 (0.9)

-22.0 (0.4)

-17.8 (0.5)

14.4

24.5 (0.3)

8.3 (0.7)

2.7

Cm7

nHGF

Muscle

47.5

-16.6

-7.5 (1.0)

-24.5 (0.3)

-23.9 (0.3)

-14.2 (0.9)

-23.0 (0.6)

-17.6 (0.7)

14.0

23.4 (0.2)

9.2 (0.2)

2.4

Cm8

nHGF

Muscle

51.1

-16.3

-6.3 (1.2)

-23.4 (1.1)

-23.7 (0.2)

-13.8 (1.1)

-22.6 (0.2)

-17.3 (0.2)

18.1

27.6 (0.5)

13.8 (0.5)

2.4

Peru - Oceanic

 

 

 

 

 

 

 

 

 

 

 

 

Cm9

nHGF

Skin

58.7

-15.5

-8.1 (1.0)

-24.2 (0.6)

-23.4 (1.1)

-12.5 (0.1)

-22.2 (1.0)

-17.7 (1.7)

11.3

18.7 (0.5)

4.8 (0.6)

2.4

Cm10

nHGF

Skin

51.0

-15.8

-9.3 (0.2)

-24.7 (0.4)

-25.9 (0.3)

-14.8 (0.3)

-23.2 (0.4)

-20.0 (0.5)

13.5

20.3 (0.2)

6.7 (0.4)

2.3

Cm11

nHGF

Skin

48.0

-16.0

-12.1 (0.8)

-24.9 (0.6)

-25.6 (0.7)

-17.0 (0.8)

-22.7 (0.2)

-20.4 (1.0)

10.5

18.6 (0.2)

3.9 (1.0)

2.5

Cm12

HGF*

Skin

41.0

-14.5

-9.5 (0.7)

-24.0 (0.3)

-25.2 (0.5)

-13.7 (0.2)

-22.6 (0.2)

-19.8 (0.5)

11.2

18.7 (0.4)

6.6 (0.5)

2.1

Lo1

nHGF

Skin

38.2

-14.6

-11.9 (0.4)

-23.8 (1.3)

-25.0 (0.4)

-13.9 (1.1)

-23.3 (0.2)

-19.3 (0.5)

13.5

21.0 (0.3)

6.2 (0.5)

2.5

Lo2

nHGF

Skin

56.0

-16.3

-14.5 (1.4)

-23.9 (1.0)

-26.5 (0.5)

-12.9 (0.7)

-23.2 (0.3)

-21.1 (1.0)

12.3

20.6 (0.3)

6.7 (0.7)

2.4

Cc1

nHGF

Skin

56.0

-16.2

-11.3 (0.4)

-25.2 (0.5)

-25.7 (0.3)

-15.1 (0.3)

-23.1 (0.1)

-20.4 (1.0)

10.9

19.5 (0.2)

3.8 (0.8)

2.6

Cc2

nHGF

Skin

51.5

-16.0

-9.6 (0.5)

-23.3 (0.6)

-24.7 (0.5)

-14.2 (0.9)

-22.4 (0.2)

-19.6 (0.6)

16.2

23.6 (0.2)

9.5 (0.6)

2.4

Central Pacific - Fish

 

 

 

 

 

 

 

 

 

 

 

 

Lg

nHGF

Muscle

110

-19.9

-8.8 (0.5)

-24.1 (0.2)

-26.1 (0.6)

-18.3 (0.8)

-25.5 (0.8)

-19.0 (0.6)

 

 

 

 

Ch

nHGF

Muscle

74

-16.3

-10.6 (0.9)

-22.5 (0.7)

-24.7 (0.7)

-16.9 (0.9)

-24.0 (1.5)

-18.6 (0.8)

 

 

 

 

Xg

nHGF

Muscle

166

-21.8

-7.1 (0.7)

-23.0 (0.5)

-25.9 (0.2)

-16.8 (1.3)

-24.2 (0.3)

-19.0 (0.6)

 

 

 

 

1Species: Cm – Chelonia mydas; Cc – Caretta Caretta; Lo - Lepidochelys olivacea;Lg - Lampris guttatus; Ch - Coryphaena hippurus; Xg - Xiphias gladius.

2Assumed digestive strategy based on location of capture: hindgut fermentation (HGF), non-hindgut fermentation (nHGF),*re-classified based on PCA outcome

3Turtles: Curved carapace length (CCL), Hawaii turtles CCL = 1.06(SCL)+0.64, where SCL = straight carapace length (cm). Conversion based on 2460 measurements, r2 = 0.991; Fish: Lg and Ch are fork length (FL) and Xg is eye to fork length (EFL).


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