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Evolution of the genome and cell sizes in salamanders

  • Specialia Biologica
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Riassunto

Sono state studiate le relazioni fra alcuni parametri morfometrici della cellula e la quantità di DNA nucleare in 39 specie di tutte le famiglie di Caudati. Volume nucleare e cellulare e superficie cellulare aumentano in parallelo al DNA in maniera lineare; il rapporto superficie/volume della cellula (funzione del suo metabolismo) decresce rapidamente con l'aumento del DNA, tendendo però a stabilizzarsi a valori di DNA superiori ai 70 pg. Poichè questi ultimi sono raggiunti da specie pedogenetiche di varie famiglie, viene fatta l'ipotesi di un loro ruolo adattativo connesso con le variazioni nel metabolismo cellulare.

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Authors and Affiliations

  1. Institute of Histology and Embryology, The University, Via Mezzocannone 8, I-80134, Napoli, Italy

    O. Olmo & A. Morescalchi

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  1. O. Olmo
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  2. A. Morescalchi
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Olmo, O., Morescalchi, A. Evolution of the genome and cell sizes in salamanders. Experientia 31, 804–806 (1975). https://doi.org/10.1007/BF01938475

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