加拉帕戈斯群岛（ spp.）色素沉着和部分色素沉着的陆地鬣蜥自然种群中的 25-羟维生素 D 血浆水平。

We report the first data on 25-hydroxyvitamin D plasma levels in natural populations of three species of land iguana endemic to the Galápagos Islands (, , and ). The pigment is present throughout the whole body in the skin of and . On the contrary, pigment is not present in the skin of an extended part of the body in . The only existing population of is syntopic with a population of , and the two species are closely related. These circumstances would suggest that, under the assumption that the species show a similar basking behavior and in the absence of compensatory mechanisms, lighter pigmentation should favor higher vitamin D levels. Thus, , compared with in Wolf Volcano, could show higher levels of 25(OH)D plasma levels, or equal, if compensatory mechanisms exist. The three species showed levels in the range of average values for healthy iguanas. However, contrary to the expectation, consistently exhibited the lowest 25(OH)D plasma levels. We discuss possible factors affecting vitamin concentration and hypothesize that may use the habitat to limit exposure to the high UVB irradiation at Wolf Volcano.

我们报告了三种加拉帕戈斯群岛特有陆地鬣蜥（,, 和）自然种群中 25-羟维生素 D 血浆水平的首批数据。色素存在于和整个身体的皮肤中。相反，在的身体延长部分的皮肤中不存在色素。的唯一现存种群与的种群同域分布，并且这两个物种密切相关。这些情况表明，假设这些物种表现出相似的日光浴行为，并且不存在补偿机制，那么更浅的色素沉着应该有利于更高的维生素 D 水平。因此，如果存在补偿机制，与沃尔夫火山的相比，可能表现出更高的 25(OH)D 血浆水平，或者相等。三种物种的水平处于健康鬣蜥的平均水平范围内。然而，与预期相反， consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently consistently

25-Hydroxyvitamin D Plasma Levels in Natural Populations of Pigmented and Partially Pigmented Land Iguanas from Galápagos ( spp.).

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