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首页> 外文期刊>Zoologia (Curitiba) >Isotopic signatures (δ 13C and δ15N) of muscle, carapace and claw in Phrynops geoffroanus (Testudines: Chelidae)
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Isotopic signatures (δ 13C and δ15N) of muscle, carapace and claw in Phrynops geoffroanus (Testudines: Chelidae)

机译:Phrynops geoffroanus(Testudines:Chelidae)的肌肉,甲壳和爪的同位素特征(δ13C和δ15N)

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The isotopic composition ( δ13C and δ 15N) of muscle, carapace and claw was determined from six wild individuals of Phrynops geoffroanus (Schweigger, 1812) in order to verify the variation between those tissues. The mean values of δ13C e δ 15N were, respectively, -19.48 ± 0.81‰ (-20.8 - -18.64‰) and 7.23 ± 0.67‰ (6.49 - 8.3‰) for muscle, -16.52 ± 0.98‰ (-17.88 - -15.43‰) and 7.29 ± 0.54‰ (6.74 - 7.97‰) for carapace and -18.57 ± 0.97‰ (-19.97 - -17.26‰) and 4.36 ± 0.33‰ (3.93 - 4.79‰) for claw. We found a significant difference for the tissues evaluated for both δ13C and δ15N. Muscle and claw were statistically similar and more depleted in 13C than the carapace. Nonetheless, claw was more depleted in 15N than muscle and carapace tissues. These results are likely related to differences in metabolic processes involved on each tissue formation. The description of the isotopic signatures variation in P. geoffroanus tissues provides a baseline for future investigations on the diet reconstruction of this species when more than one tissue is involved.
机译:从六只Phrynops geoffroanus(Schweigger,1812)的野生个体中确定了肌肉,甲壳和爪的同位素组成(δ13C和δ15N),以验证这些组织之间的差异。肌肉的δ13Ceδ15N平均值分别为-19.48±0.81‰(-20.8--18.64‰)和7.23±0.67‰(6.49-8.3‰),-16.52±0.98‰(-17.88--15.43甲)为7.29±0.54‰(6.74-7.97‰),爪为-18.57±0.97‰(-19.97--17.26‰)和4.36±0.33‰(3.93-4.79‰)。我们发现针对δ13C和δ15N评估的组织存在显着差异。从统计学上讲,肌肉和爪在13C中比甲壳更消耗。但是,与肌肉和甲壳组织相比,15N的爪子消耗更多。这些结果可能与每种组织形成所涉及的代谢过程的差异有关。当涉及到多个组织时,对地缘假单胞菌组织中同位素标记变化的描述为该物种的饮食重建提供了基础。

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