Cave Biology Life in Darkness by Aldemaro Romero

By Aldemaro Romero

Biospeleology, the examine of organisms that stay in caves, has an immense capability to notify many facets of contemporary biology; but this zone of data is still principally anchored in neo-Lamarckian perspectives of the wildlife in either its ways and jargon. Written for graduate scholars and educational researchers, this ebook presents a severe exam of present wisdom and ideas on cave biology, with emphasis on evolution, ecology, and conservation. Aldemaro Romero offers a old research of principles that experience motivated biospeleology, discusses evolutionary phenomena in caves, from cave colonization to phenotypic and genotypic adjustments, and integrates strategies and information from diversified organic viewpoints. He demanding situations the normal knowledge concerning the biology of caves, and highlights pressing questions that are supposed to be addressed so that it will get a greater and extra entire realizing of caves as ecosystems.

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Spelaea and concluded that its eyes and those of blind cave crayfishes had become rudimentary as a result of disuse: While it is true, in general, that all animals retain their essential form, and that no species passes over into another by transformation, we know that less material changes of form are produced by external influences such as changes in climate or food, lasting through many generations of the same species. In other words, he had the idea that disuse led to rudimentation while negating the possibility of evolution above the species level, despite the fact that he could not find the unmodified form that gave rise to the blind and depigmented one.

3 Darwinism and American neo-Lamarckism (1859–1919) · 29 dismissed natural selection as its main mechanism. These, together with Alpheus Hyatt45 and Edward Drinker Cope,46 were the founders of the American neo-Lamarckian school, and they saw cave fauna as the perfect example to support their ideas. Since Darwin himself adhered to the explanation of disuse as a mechanism for change and had not articulated a strong argument in favor of selection acting on cave organisms, they did not feel they were contradicting in any significant measure the tenets of the later editions of the Origin on this matter.

Agassiz studied comparative anatomy under Cuvier and developed his ideas along the lines of natural theology, that is, to prove the existence of God through the study of nature. Agassiz became professor of natural history at Harvard (1847–73), where he established the Museum of Comparative Zoology in 1859, combining research, teaching, and public outreach while securing large amounts of funds both public and private to support such endeavors. During the 5 October 1847 meeting of the American Academy of Arts and Sciences, Agassiz proposed a ‘Plan for an investigation of the embryology, anatomy and effect of light on the blind-fish of the Mammoth Cave, Amblyopsis spelaeus’ (Agassiz 1847, p.

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