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Table 4 Results of generalized linear models for testing the effect of cichlid species of each ecomorph on carbon and nitrogen stable isotope ratios of their muscles

From: Depth segregation and diet disparity revealed by stable isotope analyses in sympatric herbivorous cichlids in Lake Tanganyika

δ13 C      
 browser      
  Estimate SE t value p
Intercept (Ldar) −16.9 0.7 −25.3 <0.001
Pcur  9.0 0.9  9.5 <0.001
Sdia  3.4 0.9  3.6 <0.01
Tmoo  6.0 0.9  6.3 <0.001
Ttem  0.5 0.9  0.6 NS
Tvit  4.3 0.9  4.6 <0.001
Vmoo  2.5 0.9  2.6 <0.05
 grazer      
  Estimate SE t value p
Intercept (Iloo) −14.4 0.6 −25.2 <0.001
Pfam  1.9 0.8  2.3 <0.05
Pfas  1.8 0.8  2.3 <0.05
Pmac  4.2 0.8  5.2 <0.001
Ppol  3.9 0.8  4.9 <0.001
Phor  −2.5 0.9  −2.9 <0.01
Ptre  0.5 0.8  0.6 NS
δ15 N      
 browser      
  Estimate SE t value p
Intercept (Ldar)  6.2 0.3  24.3 <0.001
Pcur  −1.6 0.4  −4.3 <0.001
Sdia  −0.1 0.4  −0.3 NS
Tmoo  −1.8 0.4  −5.1 <0.001
Ttem  −0.3 0.4  −0.9 NS
Tvit  −1.3 0.4  −3.7 <0.001
Vmoo  0.1 0.4  0.3 NS
 grazer      
  Estimate SE t value p
Intercept (Iloo)  3.6 0.2  16.5 <0.001
Pfam  0.3 0.3  0.9 NS
Pfas  0.6 0.3  2.0 NS
Pmac  1.6 0.3  5.3 <0.001
Ppol  0.2 0.3  0.6 NS
Phor  0.5 0.3  1.7 NS
Ptre  1.0 0.3  3.2 <0.01
  1. SE, standard error; NS, not significant.
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Zoological Letters

ISSN: 2056-306X

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