Karyotypic Megaevolution and Phylogenetic Analysis: New World Nectar-feeding Bats Revisited

Warner, R. M.

doi:10.1093/sysbio/32.3.279

Cited by 8 publications

(5 citation statements)

References 13 publications

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“…In comparable data sets from the same family, fixed differences among seven species of Tonatia averaged five (of 20 loci) per spe¬ cies. Among eight species of Micronycteris, fixed differences aver¬ aged 4.25 (of 21 loci) per species (Arnold, 1981), and in two sibling species of Monophyllus there were three (of 12 loci) (Baker et al, 1981). The average number of fixed differences among Artib¬ eus cinereus, A. watsoni, A. toltecus, and A, phaeotis was 0.25 (of 22 loci).…”

Section: Discussionmentioning

confidence: 95%

“…Calculation of time since divergence based on fixed allozymic differences would suggest that either Artibeus cinereus, A. watsoni, A. toltecus, and A. phaeotis have only just diverged because they have even fewer fixed differences than sibling species of Monophyllus or perhaps because they are incipient species. If time since divergence was based on genetic similarity or distance (which uses polymorphic systems in measur¬ ing evolutionary distance), then the average age of species within the genera Tonatia and Micronyctens (Net's I = 0.34 and 0.28, respectively, Arnold, 1981) would be greater than the average age of the small Artibeus (Rogers' S = 0.77). However, each of these small Artibeus species would then be older than the sibling spe¬ cies Monophyllus redmani and M. plethodon (Rogers' S = 0.83, Baker et al, 1981), indicating that the number of fixed differences between congeners is not in all cases correlated with genetic dis¬ tance, polymorphism, or heterozygosity.…”

Section: Discussionmentioning

confidence: 99%

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Electrophoretic studies of relationships of six species of Artibeus (Chiroptera:Phyllostomidae) /

Koop¹,

Baker²

1983

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Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 99%

Electrophoretic studies of relationships of six species of Artibeus (Chiroptera:Phyllostomidae) /

Koop¹,

Baker²

1983

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“…Study of brachyphylline / glossophagine phylogenetic relationships has stimulated considerable debate Baker, 1982, 1984;Griffiths, 1983;Warner, 1983;Smith and Hood, 1984).…”

mentioning

confidence: 99%

Phylogenetic Relationships and Classification of the Higher Categories of the New World Bat Family Phyllostomidae

1989

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A new classification of the higher taxonomic levels within the New World bat family Phyllostomidae is presented which designates evolutionary relationships, provides a phylogenetic framework upon which modifications can be made as new comparative data are produced, and resolves certain obvious unnatural taxa that exist in the traditional classification. This new classification is a synthesis of classical morphological, chromosomal, and biochemical data. Within the family three subfamilies, the Desmodontinae, Phyllostominae, and Vampyrinae are recognized. The Desmodontinae includes the three genera of vampires, the Vampyrinae includes Vampyrum, Trachops, and Chrotopterus, and the Phyllostominae contains three tribes, the Phyllostomini (including Phyllostomus, Tonatia, Mimon, Lonchorhina, and Macrophyllum), the Glossophagini (including genera of the previously recognized Glossophaginae and Brachyphyllinae), and Stenodermatini (including genera of the previously recognized Stenodermatinae and Carolliinae). Two genera (Macrotus and Micronycteris), do not share synapomorphies with any of these subfamilies, but have retained a large number of plesiomorphic features and are placed as incertae sedis. [Classification; phylogenetic reconstruction; Phyllostomidae.]

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“…In a recent paper, Warner (1983) questioned the systematic value of cladistically analyzed G-band data from taxa with extensive repatterning of the karyotype and suggested that in such cases morphological and biochemical data are more informative in assessing phylogenetic relationships at specific and generic taxonomic levels. In the case of Reithrodontomys, it is clear that classical morphology and standard karyology could not resolve the systematic problem of the relationship of R. raviventris.…”

Section: Discussionmentioning

confidence: 99%

Chromosomal Studies and Evolutionary Relationships of an Endangered Species, Reithrodontomys raviventris

Hood

Robbins

Baker

et al. 1984

Journal of Mammalogy

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ABSTRACT.-G-and C-banded karyotypes of Reithrodontomys raviventris were examined to identify the amount and types of chromosomal change that have occurred in this species. The evolutionary origin and phylogenetic relationships of R. raviventris were evaluated by comparing G-and C-band data with six additional species of Reithrodontomys (fulvescens, creper, mexicanus, megalotis, montanus, and sumichrasti). Banding homologies indicate that the low diploid number forms (raviventris, montanus, megalotis, and sumichrasti) shared a common ancestry and that a major dichotomy exists among these taxa. R. raviventris and R. montanus share a phylogenetic relationship as indicated by 10 shared-derived chromosomal rearrangement events. R. megalotis and R. sumichrasti represent a second well-defined clade. These chromosomal banding data suggest an alternative hypothesis to the traditionally accepted view that R. raviventris is most closely related to R. megalotis.The salt-marsh harvest mouse, Reithrodontomys raviventris, is an endangered species restricted to salt marshes in the San Francisco Bay area. Two subspecies, R. r. raviventris (Dixon, 1908) and R. r. hahcoetes (Dixon, 1909) are recognized, representing southern and northern populations, respectively (Fig. 1). Previous studies have concluded that R. raviventris and another locally abundant harvest mouse, R. megalotis longicaudus, were derived from a common ancestral stock with R. megalotis being the closest living relative of R. raviventris. Hooper's (1944) assessment of San Francisco Bay as an isolating mechanism for speciation of small mammals first introduced the notion of a phylogenetic relationship between R. raviventris and megalotis. Fisler (1965) pursued the idea that R. raviventris was a megalotis derivative in a detailed study of adaptation and speciation of harvest mice in the San Francisco Bay area.Chromosomal studies were undertaken by Shellhammer (1967Shellhammer ( , 1969 to document variability in the three forms of harvest mice from San Francisco Bay. Both subspecies of R. raviventris possess a 2n = 38, FN = 72 karyotype, but vary in chromosomal morphology. The standard karyotype of R. megalotis longicaudus is similar (2n = 42, FN = 80), which led Shellhammer (1967) to propose that the karyotype of R. raviventris had most likely evolved from one like that found in R. megalotis.Recent studies of chromosomal evolution within and among species of Reithrodontomys document that the genus is characterized by a high amount of chromosomal variability (Carleton and Myers, 1979; Robbins and Baker, 1980;Engstrom et al., 1981). On the basis of standard karyotypic data, there appear to be two major groups. One group includes species with high diploid numbers (50-52) and mostly acrocentric elements (Reithrodontomys fulvescens, mexicanus, creper, gracilis, tenuirostris, and humulis). The second assemblage includes species characterized by low diploid number (38-42) and an entirely biarmed karyotype (R. raviventris, montanus, megalotis, and sumichrasti). Carleton and ...

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Karyotypic Megaevolution and Phylogenetic Analysis: New World Nectar-feeding Bats Revisited

Cited by 8 publications

References 13 publications

Electrophoretic studies of relationships of six species of Artibeus (Chiroptera:Phyllostomidae) /

Electrophoretic studies of relationships of six species of Artibeus (Chiroptera:Phyllostomidae) /

Phylogenetic Relationships and Classification of the Higher Categories of the New World Bat Family Phyllostomidae

Chromosomal Studies and Evolutionary Relationships of an Endangered Species, Reithrodontomys raviventris

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