Acoustic and morphological variation on two populations of Dryophytes arenicolor in central México

Bioacoustics ◽  
2020 ◽  
pp. 1-12
Author(s):  
Cristian I. Hernández-Herrera ◽  
Hibraim A. Pérez-Mendoza
Keyword(s):  
Morphological Variation ◽  
Central Mexico ◽  
Two Populations

Comparative morphology and genetics of two populations of spiny lizards (genus Sceloporus) from Central Mexico

2017 ◽  
Vol 267 ◽  
pp. 21-30 ◽  
Author(s):  
A. García-Rosales ◽  
A. Ramírez-Bautista ◽  
B.P. Stephenson ◽  
R.N. Meza-Lázaro ◽  
A. Nieto-Montes de Oca
Keyword(s):  
Comparative Morphology ◽  
Central Mexico ◽  
Two Populations

Molecular characterisation of, and new data on, two populations of Xiphinema ingens Luc & Dalmasso, 1964 (Nematoda: Longidoridae) from Iran

Nematology ◽  
2015 ◽  
Vol 17 (2) ◽  
pp. 125-138
Author(s):  
Sohrab Mirzaei ◽  
Ebrahim Pourjam ◽  
Majid Pedram
Keyword(s):  
Bayesian Inference ◽  
Maximum Likelihood ◽  
Morphological Variation ◽  
Phylogenetic Analyses ◽  
Molecular Data ◽  
28S Rdna ◽  
Molecular Characterisation ◽  
Morphometric Data ◽  
Two Populations

Two populations of Xiphinema ingens were recovered and characterised based on morphological, morphometric and molecular data. Interesting morphological variation was observed on the nature of differentiation in uterus of females between both populations, i.e. one population had only a pseudo-Z-organ in the shape of globular bodies, whilst the second population had a similar pseudo-Z-organ but also had crystalloids which varied in size and number and were located near the pseudo-Z-globules or sometimes at some distance from them towards the vagina. Variation was also observed in the shape of tail of juveniles within each population as well as between two recovered populations. Both populations had the same range of morphometric data and formed a fully supported clade in both Bayesian inference (BI) and maximum likelihood (ML) methods of phylogenetic analyses using partial sequences of 28S rDNA D2-D3 and ITS1 regions. The two populations of X. ingens formed a clade with another Xiphinema species native to Iran (X. castilloi) in 28S and two species, X. macroacanthum and X. bernardi, in ITS1 trees.

scholarly journals Morphological variation of Cosmos bipinnatus (Asteraceae) and its relation to abiotic variables in central Mexico

2015 ◽  
Vol 88 (1) ◽  
Author(s):  
Maribel Paniagua-Ibáñez ◽  
Alfredo López-Caamal ◽  
Patricia Mussali-Galante ◽  
Enrique Sánchez-Salinas ◽  
Ma. Laura Ortiz-Hernández ◽  
...  
Keyword(s):  
Morphological Variation ◽  
Central Mexico ◽  
Cosmos Bipinnatus ◽  
Abiotic Variables

scholarly journals Morphological variation and the process of domestication of Stenocereus stellatus (Cactaceae) in Central Mexico

1999 ◽  
Vol 86 (4) ◽  
pp. 522-533 ◽  
Author(s):  
Alejandro Casas ◽  
Javier Caballero ◽  
Alfonso Valiente-Banuet ◽  
Jose Antonio Soriano ◽  
Patricia Da´vila
Keyword(s):  
Morphological Variation ◽  
Central Mexico ◽  
Stenocereus Stellatus

Serbian spruce, a narrow endemic, contains much genetic variation

1991 ◽  
Vol 21 (3) ◽  
pp. 363-367 ◽  
Author(s):  
H. Kuittinen ◽  
O. Muona ◽  
K. Kärkkäinen ◽  
Ž. Borzan
Keyword(s):  
Genetic Variation ◽  
Morphological Variation ◽  
Quantitative Traits ◽  
Small Population ◽  
Finnish Population ◽  
Natural Distribution ◽  
Seedling Traits ◽  
Narrow Endemic ◽  
Serbian Spruce ◽  
Two Populations

Serbian spruce (Piceaomorika (Pančić) Purk.) is reputedly a self-fertile and morphologically uniform species with a natural distribution restricted to a total area of less than 60 ha in central Yugoslavia. This has led to the conclusion that the species lacks genetic variation. In this study, genetic variation at 19 enzyme loci was investigated in two populations: a natural Yugoslavian population and a cultivated Finnish population. The average expected heterozygosities over 19 loci were 0.13 and 0.15 in the two populations, which are similar to those observed in other conifers. Heritabilities of four seedling traits were estimated on the basis of a progeny trial. They varied from 0.34 to 1.23, with standard deviations of 0.17–0.37. Because of maternal effects, these are probably inflated estimates, but they show that there may be considerable genetic variation in quantitative traits, as well. The observed amount of genetic variation in Serbian spruce is unexpectedly high considering its self-fertility and lack of morphological variation. We conclude that drift due to small population size has not had a large impact on the level of genetic variation in this species The lack of morphological variation observed by many authors is probably a result of selection.

Two new species of Lerista Bell, 1833 (Reptilia: Scincidae) from north Queensland populations formerly assigned to Lerista storri Greer, McDonald and Lawrie, 1983

Zootaxa ◽  
2019 ◽  
Vol 4577 (3) ◽  
pp. 473
Author(s):  
ANDREW P. AMEY ◽  
PATRICK J. COUPER ◽  
JESSICA WORTHINGTON WILMER
Keyword(s):  
New Species ◽  
Morphological Variation ◽  
Population Analysis ◽  
Conservation Status ◽  
Morphological Diversity ◽  
Two New Species ◽  
Voucher Specimens ◽  
Type Population ◽  
Two Populations ◽  
Geographically Isolated

Ongoing surveys for skinks of the genus Lerista in north Queensland have resulted in the collection of voucher specimens from two populations formerly assigned to Lerista storri Greer, McDonald & Lawrie, 1983 that are geographically isolated from the type population and show a degree of morphological variation differing from the type population. Analysis of recently collected material has confirmed both populations are specifically distinct to the type population, with one being more closely related to Lerista ameles Greer, 1979, another little known, north Queensland species. Consequently, these populations are described as Lerista alia sp. nov. and Lerista parameles sp. nov. The morphological diversity of L. storri is thereby restricted, necessitating a redescription. The conservation status of all these taxa is discussed.  

scholarly journals Variación morfológica de poblaciones silvestres y arvenses de Solanum ehrenbergii (Solanaceae)

2017 ◽  
pp. 85
Author(s):  
Mario Luna Cavazos
Keyword(s):  
Principal Components ◽  
Morphological Variation ◽  
Morphological Characterization ◽  
Numerical Analyses ◽  
Central Mexico ◽  
Natural Conditions ◽  
The People

Solanum ehrenbergii ("papa de monte" or "papa güera") is a species with edible tubers, valuable for the people from central Mexico. The farmers seek the tubers in "nopaleras" and "mezquitales'', but more commonly, they can be found in corn and bean cultivated fields, thus the plants are tolerated and encouraged. The environment in which S. ehrenbergii grows is variable, from harsh, in natural conditions , to bening, in the cultivated fields. The hypothesis is that it must exist a pattern of morphological variation in response to the origin of the populations. The objectives of the study were: a] to analyze the pattern of morphological variation between wild and weed populations of Solanum ehrenbergii and b] to document possible taxonomic differences and evolutive trends under management conditions. The methods included the morphological characterization of botanic material and the numerical analyses of data by cluster and principal components. The results indicated, that populations are grouped according to its origin wild or weed. Probably, the morphological variation of S. ehrenbergii is influenced for an incipient process of domestication in response to practices of tolerance, protection and encouragement carried out by the farmers.

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