Geographic overlap and acquisition pairing

2018 ◽  
Vol 39 (2) ◽  
pp. 329-355 ◽  
Author(s):  
Zhuo Chen ◽  
Prashant Kale ◽  
Robert E. Hoskisson
Keyword(s):  
Geographic Overlap

scholarly journals The Biogeography of Adaptive Radiations and the Geographic Overlap of Sister Species

2015 ◽  
Vol 186 (5) ◽  
pp. 565-581 ◽  
Author(s):  
Mikael Pontarp ◽  
Jörgen Ripa ◽  
Per Lundberg
Keyword(s):  
Sister Species ◽  
Adaptive Radiations ◽  
Geographic Overlap

Diversity, complementary distributions and taxonomy of Rhagada land snails (Gastropoda : Camaenidae) on the Burrup Peninsula, Western Australia

2016 ◽  
Vol 30 (4) ◽  
pp. 323 ◽  
Author(s):  
Michael S. Johnson ◽  
Sean Stankowski ◽  
Peter G. Kendrick ◽  
Zoë R. Hamilton ◽  
Roy J. Teale
Keyword(s):  
Western Australia ◽  
Genetic Similarity ◽  
Phylogenetic Diversity ◽  
Sister Group ◽  
Land Snails ◽  
Island Species ◽  
Local Sampling ◽  
Geographic Overlap

Phylogenetic diversity of Rhagada land snails is high on the Burrup Peninsula, Western Australia, with four distinct clades, representing three of the four major clades of the Pilbara region. Detailed sampling indicated little geographic overlap of the four clades, conforming to the general rarity of congeneric sympatry in Australian camaenids. The diversity on the Burrup Peninsula includes three previously unclassified morphotypes. One of these lies within the broad endemic clade of the adjacent Dampier Archipelago, and is provisionally assigned to the island species R. perprima, based on phylogenetic evidence. The two other undescribed morphotypes constitute an endemic clade that is the sister group of the broader Dampier Archipelago clade. All COI p-distances within clades are less than 6%, whereas nearly all distances between clades exceed 10%, the gap corresponding to differences among species of Rhagada generally. One morphotype in the Burrup Peninsula endemic clade has a low spire and a distinctive keel, and is restricted to a single rockpile. Detailed local sampling revealed gradation between this form and the more widely distributed globose morphotype. On the basis of genetic similarity and morphological continuity, we describe the morphologically variable endemic Burrup Peninsula clade as Rhagada ngurrana, sp. nov., which has a distribution spanning only 9 km.

DISPLAY BY APPARENT HYBRID PRAIRIE-CHICKENS IN A ZONE OF GEOGRAPHIC OVERLAP

The Condor ◽  
2002 ◽  
Vol 104 (3) ◽  
pp. 683 ◽  
Author(s):  
Matthew R. Bain ◽  
Greg H. Farley
Keyword(s):  
Geographic Overlap

Chromosomal Races in the Australian Grasshopper Moraba viatica in a Zone of Geographic Overlap

Evolution ◽  
1964 ◽  
Vol 18 (3) ◽  
pp. 417 ◽  
Author(s):  
M. J. D. White ◽  
H. L. Carson ◽  
J. Cheney
Keyword(s):  
Chromosomal Races ◽  
Geographic Overlap

scholarly journals Expansion of the fern genus Lecanopteris to encompass some species previously included in Microsorum and Colysis (Polypodiaceae)

2021 ◽  
Author(s):  
L.R. Perrie ◽  
A.R. Field ◽  
D.J. Ohlsen ◽  
P.J. Brownsey
Keyword(s):  
Type Species ◽  
Morphological Character ◽  
Phylogenetic Analyses ◽  
New Combinations ◽  
Venation Pattern ◽  
Morphological Characterisation ◽  
Single Genus ◽  
Geographic Overlap

The fern genus Microsorum is not monophyletic, with previous phylogenetic analyses finding three lineages to group not with the type species, but to form a grade related to the 13 species of Lecanopteris. These three lineages have recently been recognised as separate genera: Bosmania, Dendroconche, and Zealandia. Here, we explore the morphological characterisation of Lecanopteris and these other three lecanopteroid genera. While the traditional circumscription of Lecanopteris has seemed sacrosanct, its defining morphological character states of rhizome cavities and ant brooding associations occur in other lecanopteroid ferns and elsewhere in the Polypodiaceae. Instead, we suggest that the morphological characterisation of an expanded Lecanopteris including the Dendroconche and Zealandia lineages is just as good, if not better, with the pertinent character states being the absence of sclerenchyma strands in the rhizome and at least some fronds having Nooteboom’s type 5 venation pattern. This wider circumscription is also better able to accommodate phylogenetic uncertainty, and it means that groups of species traditionally placed together in a single genus are not distributed across different genera. General users familiar with the narrower circumscription of Lecanopteris will not be significantly disrupted, because there is little geographic overlap with the lineages added to the genus. Consequently, we make new combinations in Lecanopteris for 11 species and one subspecies.

Bank Networks and Acquisitions

2020 ◽  
Vol 66 (11) ◽  
pp. 5216-5241 ◽  
Author(s):  
Ross Levine ◽  
Chen Lin ◽  
Zigan Wang
Keyword(s):  
Stock Returns ◽  
Abnormal Returns ◽  
Executive Turnover ◽  
Cumulative Abnormal Returns ◽  
Loan Quality ◽  
Network Overlap ◽  
Identification Strategy ◽  
Number Of Branches ◽  
Geographic Overlap

Does the predeal geographic overlap of the branches of two banks affect the probability that they merge, postannouncement stock returns, and postmerger performance? We compile information on U.S. bank acquisitions from 1984 through 2016, construct several measures of network overlap, and design and implement a new identification strategy. We find that greater predeal network overlap (1) increases the likelihood that two banks merge; (2) boosts the cumulative abnormal returns of the acquirer, target, and combined banks; and (3) reduces employment, boosts revenues, reduces the number of branches, improves loan quality, and expedites executive turnover. This paper was accepted by Tomasz Piskorski, finance.

scholarly journals Display by Apparent Hybrid Prairie-Chickens in a Zone of Geographic Overlap

The Condor ◽  
2002 ◽  
Vol 104 (3) ◽  
pp. 683-687 ◽  
Author(s):  
Matthew R. Bain ◽  
Greg H. Farley
Keyword(s):  
Tympanuchus Cupido ◽  
First Case ◽  
Prairie Chicken ◽  
In The Wild ◽  
Geographic Overlap

Abstract Greater (Tympanuchus cupido) and Lesser (T. pallidicinctus) Prairie-Chicken are thought to be historically and presently allopatric. We documented an area of approximately 250 000 ha in western Kansas characterized by leks with displaying males of both species. Display booms unlike typical Greater or Lesser Prairie-Chickens were heard and recorded at nine mixed leks. Spectrograms of these vocalizations contained elements of Greater and Lesser Prairie-Chicken booms, and comparisons suggested intermediate similarity. Males giving these booms had additional novel characters as well as novel combinations of Greater and Lesser Prairie-Chicken characters, and might represent the first case of hybridization in the wild. Despliegues de Híbridos Aparentes de Tympanuchus en una Zona de Simpatría Resumen. Aunque se ha pensado que Tympanuchus cupido y T. pallidicinctus son especies histórica y actualmente alopátricas, documentamos un área de aproximadamente 250 000 ha en el oeste de Kansas que está caracterizada por asambleas de cortejo integradas por machos de ambas especies. Escuchamos y grabamos vocalizaciones de despliegue diferentes de las típicas de T. cupido y T. pallidicinctus en nueve asambleas de cortejo mixtas. Los espectrogramas de dichas vocalizaciones contenían elementos de los cantos de T. cupido y T. pallidicinctus y presentaban similitud intermedia. Los machos que emitieron esas vocalizaciones presentaban caracteres adicionales novedosos, así como nuevas combinaciones de caracteres de T. cupido y T. pallidicinctus. Éste podría representar el primer caso de hibridación de estas dos especies en condiciones naturales.

scholarly journals CHROMOSOMAL RACES IN THE AUSTRALIAN GRASSHOPPER MORABA VIATICA IN A ZONE OF GEOGRAPHIC OVERLAP

Evolution ◽  
1964 ◽  
Vol 18 (3) ◽  
pp. 417-429 ◽  
Author(s):  
M. J. D. White ◽  
H. L. Carson ◽  
J. Cheney
Keyword(s):  
Chromosomal Races ◽  
Geographic Overlap
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