1,721,200 research outputs found
Zoology: The view from 1,000 feet
No full textAlessandro Minelli, Gregory D. Edgecombe (2022): Zoology: The view from 1,000 feet. Current Biology 32 (5): 225-228, DOI: 10.1016/j.cub.2022.01.07
Zoology: The view from 1,000 feet
No full textAlessandro Minelli, Gregory D. Edgecombe (2022): Zoology: The view from 1,000 feet. Current Biology 32 (5): 225-228, DOI: 10.1016/j.cub.2022.01.07
Figure 2 in Zoology: The view from 1,000 feet
No full textFigure 2. Asuper-elongated centipede. The centipede Himantarium gabrielis, from Sicily, body length ca. 10 cm. (Photo: Gonzalo Giribet.)Published as part of Alessandro Minelli & Gregory D. Edgecombe, 2022, Zoology: The view from 1,000 feet, pp. 225-228 in Current Biology 32 (5) on page 227, DOI: 10.1016/j.cub.2022.01.072, http://zenodo.org/record/635948
On the Evolutionary Developmental Biology of Speciation
No full textThe mainstream approaches to the study of speciation and clade diversification have extensively focused on genetic mechanisms and ecological contexts, while much less attention has been paid to the role of development. In this paper we provide materials to support the thesis that taking development into the picture of evolutionary processes can bring important insights on how species multiply and diversify. Evidence that developmentally entangled evolutionary factors are important in speciation comes from different lines of investigation that can be broadly grouped under three headings: evolvability, phenotypic plasticity, and phenology. Evolvability enters the scene through the complexity of the genotype-phenotype map, the developmental link between transmissible genetic information and selectable phenotypes. Phenotypic plasticity can act as a facilitator for speciation, promoting diversification at different stages of the speciation process, as well as generating novel targets and novel trade-offs for evolutionary processes. The formal inclusion of the developmental time axis in speciation models widens the scope for investigating the onset and/or reinforcement of reproductive barriers through a range of situations along an organism’s life cycle. Overall, developmental processes can contribute to speciation and diversification at different stages of the speciation process, at different levels of biological organization and along the organism’s whole life cycle
Le classificazioni nelle scienze
No full textAtti del convegno tenutosi a Padova sulla classificazione nelle scienz
Classification [Based in part on the previous version of this eLS article ‘Classification’ (2012) by Alessandro Minelli].
No full textA biological classification is a hierarchical arrangement of species, subspecific units and higher taxa, with the corresponding scientific nomenclature; classification is also the part of systematic biology concerned with generating such an arrangement. Scientific classifications have ancient roots in folk taxonomies. Between the classical Antiquity and the Renaissance, major conceptual advancement was due to Aristotle and Cesalpino, but modern classifications owe mainly to John Ray and eventually to Linnaeus, who introduced binomial nomenclature. Modern classifications are increasingly aiming to mirror phylogenetic relationships, an effort that may eventually require abandoning the traditional Linnaean ranks such as the genus, the family, the order and the class. Nomenclature is disciplined by international codes – these provide rules for introducing new names and for selecting the names to be used in the case of conflict between synonymous or homonymous names
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