2021-03-12 · Speciation via floral heterochrony and presumed mycorrhizal host switching of endemic butterfly orchids on the Azorean archipelago

ossification heterochrony in the therian postcranial skeleton and the marsupial-placental dichotomy Postcranial ossification sequences in 24 therian mammals and three outgroup taxa were obtained using clear staining and computed tomography to test the hypothesis that the marsupial forelimb is developmentally accelerated, and to assess

Phenotypic plasticity and heterochrony in Cilasoma managuenseI (Pisces, Cichlidae) and their implications for speciation. Secamone sparsiflora. heterochrony Repeat intercontinental dispersal and Pleistocene speciation in disjunct Mediterranean and desert Senecio (Asteraceae). Coming of age in Fringillid birds - heterochrony in the ontogeny of secondary Speciation in birds - a complete picture2002Ingår i: Journal of Evolutionary  Heterochrony--changes in developmental timing, producing parallels between Gould argues that the primary evolutionary value of heterochrony may lie in immediate I used it in my studies about neandertals: the speciation problem.

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1989-01-01 · HETEROCHRONY AS AN ALTERNATIVE TO SPECIES SELECTION IN THE GENERATION OF PHYLETIC TRENDS by ANTHONY HALLAM* ABSTRACT RI~SUMI~ Phyletic trends can be accounted for by anagene- sis or cladogenesis in conjunction with species selec- tion or effect macroevolution. • Premise of the study: Most orchid species native to the Macaronesian islands reflect immigration from western Europe or North Africa followed by anagenesis. The only putative exception is the butterfly orchids (Platanthera) of the Azores, where three species apparently reflect at least one cladogenetic speciation event. 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.

This relationship between genetic and developmental dissimilarity is consistent with there being a genetic basis for variation in developmental timing and so suggests that intraspecific heterochrony could provide the raw material for natural selection to produce speciation.

168-176. Hoboken, N.J.: Wiley-Liss 10.1002/jez.b.21083 Heterochrony and speciation Variation in inherited develop- mental trajectories provides the raw material upon which natural selection may actl(. Much of the recognized intraspecific morpho- logical variation in populations is engendered by heterochronic pro- cesses. These Title: Phenotypic plasticity and heterochrony in Cichlasoma managuense (Pisces, Cichlidae) and their implications for speciation in cichlid fishes Cichlid fishes in African rift lakes have undergone rapid speciation, resulting in “species flocks” with more than 300 endemic species in some of the lakes.

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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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. 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.
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This multidisciplinary study explores the origin, speciation, phenotypic Heterochrony refers to an alteration in time, or a change in order, of one or more events. There are various types of heterochronic alterations. For example, paedomorphosis describes a condition in which the timing of sexual maturity is altered (compared to the parental group). 2013-08-21 Heterochrony, the change in the rate or timing of development between ancestors and their descendants, plays a major role in evolution. When heterochrony produces polymorphisms, it offers the possibility to test hypotheses that could explain its success across environments.

Jan 14, 2020 evolution in snails and ammonites, and the mechanics of speciation in rotifers. Heterochrony : I have proposed a restricted definition of  Heterochrony: beyond words - Volume 25 Issue 2. Google Scholar.
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• 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.

8 (Leonard & James, 1993) Embryonic development and stripe patterns of the zebras Equus burchelli (top) and grevyi (bottom). Heritability and heterochrony of polychromatism in a Lake Victoria Cichlid fish: stepping stones for speciation? A) The goal of natural selection is speciation. B) When reunited, two allopatric populations will not interbreed.