May 4, 2018 This includes speciation; gene duplication and animal developmental genetics; paralogous and orthologous genes; heterochrony and

Speciation, Heterochrony, and Genetic Variation in Hispaniolan Palm-Tanagers; Speciation, Heterochrony, and Genetic Variation in Hispaniolan Palm-Tanagers.

Abstract. Phylogenetic heterochrony can be perceived in how distantly related Speciation via floral heterochrony and presumed mycorrhizal host switching of endemic Butterfly-orchids on the Azorean archipelago June 2014 American Journal of Botany 101(6) Abstract. Heterochrony is known as a developmental change in the timing or rate of ontogenetic events across phylogenetic lineages. It is a key concept synthesizing development into ecology and evolution to explore the mechanisms of how developmental processes impact on phenotypic novelties. Li and Johnston 2000 (cited under Heterochrony in Plants: General Overviews) is a review of the literature through the 20th century on heterochrony in plants.

This multidisciplinary study explores the origin, speciation Heterochrony, broadly defined, refers to evolutionary change in the rate or timing of development. The concept has long been central to evolutionary developmental biology and remains actively investigated; it has dominated the literature of evolutionary developmental biology. Heterochrony is known as a developmental change in the timing or rate of ontogenetic events across phylogenetic lineages. It is a key concept synthesizing development into ecology and evolution to explore the mechanisms of how developmental processes impact on phenotypic novelties.

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ecological speciation by the combination of field studies and experiments, particularly in the fields of morphometric heterochrony and comparative behaviour.

Heterochrony : I have proposed a restricted definition of Heterochrony: beyond words - Volume 25 Issue 2. Google Scholar. Hallam, A. 1998. Speciation patterns and trends in the fossil record.

Phylogenetic heterochrony can be perceived in how distantly related pairs of sister species are, in the rate of diversification events through time of specific clades, and …

A likely pathway of the evolution of novel paedomorphic species is via selection of thyroxin‐response alleles that delay metamorphic timing (Voss et al . of heterochrony that appear repeatedly in parallel in particular clades reflect shared, inherited morphogenetic responses to common environmental causes. Third, there are limits on the ways in which speciation can occur in general and even narrower limits in the case of any particular monophyletic group of • Heterochrony involves a shift in the timing of developmental processes so an event occurs earlier, later, or at a different rate in a taxon compared to its ancestor. 8 (Leonard & James, 1993) Embryonic development and stripe patterns of the zebras Equus burchelli (top) and grevyi (bottom). Illustration drawn by Carole B. 9. phenotypic plasticity and heterochrony in cichlasoma managuense (pisces, cichlidae) and their implications for speciation in cichlid fishes Axel Meyer Museum of Vertebrate Zoology and Department of Zoology, University of California, Berkeley, CA, 94720 2013-08-21 · Heterochrony, the altered timing of developmental events between ancestors and descendants, could be such a link although the processes responsible for producing heterochrony, widely viewed as an interspecific phenomenon, are still unclear. 2002-03-19 · Heterochrony (changes in the rates of developmental growth and/or shifts in the timing of developmental events) has been successfblly argued as the most probable process by which the rapid speciation changes inherent to the concept of punctuated equilibrium could occur.

2003), but this perspective deserves closer attention HETEROCHRONY, MATERNAL EFFECTS, AND PHENOTYPIC VARIATION AMONG SYMPATRIC PUPFISHES HETEROCHRONY, MATERNAL EFFECTS, AND PHENOTYPIC VARIATION AMONG SYMPATRIC PUPFISHES Holtmeier, Cami L. 2001-02-01 00:00:00 Department of Ecology and Evolutionary Biology, Corson Hall, Cornell University, Ithaca, New York 14853-2701 Abstract. Variation … Heterochrony is evolutionary change in the timing of expression of a phenotype trait, that transfers expression of the trait from one life stage or behavioral or physiological phase to another—”the shifting of characters from one part of an ontogeny to another” (Valentine, 1977b, p. 260) or simply “the displacement of characters in time” (Gould, 1977, p.
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spatial arrangement of depository and resorptive bone growth fields speciation ÆspeciationÆ results of heterochrony . .

Two works, Raff 1996 and Hall 1998 , present a general overview of evolutionary developmental biology, placing heterochrony within that broader context. Lethaia, 9: 245-259. HALLAM A. 1978 - How rare is phyletic gradualism?
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investigating heterochrony within an adaptive context across animal taxa, including plasticity's impacts on diversification and speciation. Trends Ecol. Evol.

Although macroevolutionary events play a defining role in speciation, microevolutionary events, acting over extended periods of time (especially with strong selection), 2007-01-01 Speciation processes are seldom studied from the point of view of changes in developmental control and timing (e.g., Naisbit et al .