Interspecific relationships of the midday gerbil (Meriones meridianus Pall., 1773) and tamarisk gerbil (M. tamariscinus Pall., 1773) in pasture ecosystems of the Kalmyk Republic

2008 ◽  
Vol 39 (2) ◽  
pp. 130-135
Author(s):  
S. A. Shilova
Keyword(s):  
Interspecific Relationships ◽  
Tamarisk Gerbil ◽  
Kalmyk Republic

scholarly journals Diversity of Epibionts Associated with Lepidochelys olivacea (Eschscholtz 1829) Sea Turtles Nesting in the Mexican South Pacific

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1734
Author(s):  
Brenda Sarahí Ramos-Rivera ◽  
Himmer Castro-Mondragon ◽  
José Gabriel Kuk-Dzul ◽  
Pedro Flores-Rodríguez ◽  
Rafael Flores-Garza
Keyword(s):  
Data Analysis ◽  
Sea Turtles ◽  
South Pacific ◽  
First Record ◽  
Abundant Species ◽  
Interspecific Relationships ◽  
Lepidochelys Olivacea ◽  
Significant Difference ◽  
The Relationship ◽  
Head Neck

The present study contributes to the knowledge of epibionts recorded on sea turtles that nested on a beach in the South Pacific of Mexico. A total of 125 Lepidochelys olivacea turtles nested on Llano Real beach, Guerrero, Mexico, were examined. We collected 450 conspicuous organisms from 8 species from 43 turtles. The corresponding data analysis was carried out to obtain the relative abundance, the relationship between turtle sizes and the presence of organisms, the similarity of species between the sampling months, and the interspecific relationships between the epibionts and the turtles observed. Chelonibia testudinaria was the most abundant species, while Remora remora was the least abundant species. The turtles were divided into six body sections, with the greatest abundance of these organisms located in the head–neck section of turtles, and there was a significant difference in the size of the turtles that presented epibionts and those that did not. C. testudinaria showed greater similarity between sampling months, and the interspecific relationships recorded were commensalism, parasitism, amensalism, and protocooperation. This research contributes the first record of epibionts in L. olivacea nesting in Guerrero, Mexico.

ON CONIFEROPHAGOUS SPECIES OF CHORISTONEURA (LEPIDOPTERA: TORTRICIDAE) IN NORTH AMERICA: III. SOME CHARACTERS OF IMMATURE FORMS HELPFUL IN THE IDENTIFICATION OF SPECIES

1967 ◽  
Vol 99 (5) ◽  
pp. 464-481 ◽  
Author(s):  
G. T. Harvey ◽  
G. Stehr
Keyword(s):  
North America ◽  
Taxonomic Group ◽  
Single Individual ◽  
Interspecific Relationships ◽  
Identification Of Species ◽  
Colour Morphs

AbstractPigmentation of heads and prothoracic shields of last-instar larvae, colour of pupae, and frequencies of haemolymph colour morphs in fresh pupae are used to support the taxonomic differentiation of the following members of the genus Choristoneura: fumiferana, biennis, orae, occidentalis, viridis, subretiniana, pinus pinus, p. maritima, and lambertiana. These characters are statistical in nature and not competent to relate a single individual unequivocally to a taxonomic group; nevertheless, a key is developed to assist identification of populations on the basis of the characters described. Interspecific relationships within the genus are considered.

scholarly journals La región de los ITS del ADN ribosomal del núcleo (nrADN), fuente de caracteres moleculares en la sistemática de las gimnospermas

2017 ◽  
pp. 159 ◽  
Author(s):  
Adrián Quijada ◽  
Guadalupe Méndez-Cárdenas ◽  
Blanca Hernández-Baños ◽  
Elena Álvarez-Buylla
Keyword(s):  
Chloroplast Dna ◽  
Direct Evidence ◽  
Phylogenetic Reconstruction ◽  
Its Region ◽  
Phylogenetic Inference ◽  
Reticulate Evolution ◽  
Length Variation ◽  
Interspecific Relationships ◽  
Considerable Length

The ITS region of gymnosperm plants has shown to be longer than the typical angiosperm ITS and shows considerable length variation. The larger size relative to the ITS in angiosperms offers more characters for phylogenetic reconstruction, which make this marker suitable for inference at different taxonomic levels. Unlike chloroplast DNA (cpDNA), ITS data can provide direct evidence of interspecific hibridization. This permits the use of the ITS to obtain measurements of introgression rates among populations and to detect events of reticulate evolution. Infraspecific ITS variation in the genus Pinus has been reported, which can compromises the inference of interspecific relationships. This potential must be taken into account in phylogenetic inference of gymnosperms.

Cranial anatomy of tadpoles of five species of Scinax (Hylidae, Hylinae)

Zootaxa ◽  
2011 ◽  
Vol 2787 (1) ◽  
pp. 19 ◽  
Author(s):  
LEANDRO ALCALDE ◽  
FLORENCIA VERA CANDIOTI ◽  
FRANCISCO KOLENC ◽  
CLAUDIO BORTEIRO ◽  
DIEGO BALDO
Keyword(s):  
Buccal Cavity ◽  
Morphological Data ◽  
Sister Taxon ◽  
Anatomical Features ◽  
Interspecific Relationships ◽  
Lower Jaw ◽  
Lateral Ridge ◽  
Source Of Information

We studied the oral apparatus, buccal cavity and musculoskeletal features in tadpoles of five species of the genus Scinax (S. acuminatus, S. uruguayus, S. aff. pinima, S. aromothyella, and S. berthae). Observed variation is mainly related to intrageneric grouping. Scinax acuminatus (S. ruber clade, sister taxon of S. rostratus group) has a distinctive combination of a mental gap in the margin of oral papillae, straight labial teeth with few or absent cusps, processus muscularis acute and posteriorly directed, and m. subarcualis rectus I with two slips. Scinax uruguayus and S. aff. pinima (S. uruguayus group) have keratinized sheets ventrolateral to the lower jaw sheath, well-developed infralabial and lateral ridge papillae, robust jaw cartilages, cornua trabeculae with short and widely divergent free portions, processus articularis short and wide, processus muscularis thin and directed anteriorly. Scinax aromothyella and S. berthae (S. catharinae group) have poorly developed, non-colored spurs behind the lower jaw sheath, long and thin processus articularis, wide and rounded processus muscularis, and tripartite cartilago suprarostralis. Anatomical features described are congruent with current phylogenetic arrangements based on molecular, chromosomal, and morphological data, and provide a source of information that can be useful to solve interspecific relationships within Scinax.

scholarly journals Genetic diversity and interspecific relationships of some Allium species using inter simple sequence repeat markers

2015 ◽  
Vol 22 (2) ◽  
pp. 67-75 ◽  
Author(s):  
Leila Samiei ◽  
Mahnaz Kiani ◽  
Homa Zarghami ◽  
Farshid Memariani ◽  
Mohammad Reza Joharchi
Keyword(s):  
Genetic Diversity ◽  
Simple Sequence Repeat ◽  
Gene Diversity ◽  
Inter Simple Sequence Repeat ◽  
Issr Markers ◽  
Group Method ◽  
Sequence Repeat ◽  
Allium Species ◽  
Interspecific Relationships ◽  
Simple Sequence

In this study genetic diversity and interspecific relationships of 11 Allium L. species from Khorassan province of Iran including 32 accessions were investigated by inter simple sequence repeat (ISSR) markers. Nine ISSR primers produced a total of 80 polymorphic markers and revealed high polymorphism among the studied species. The average gene diversity, effective number of alleles and Shannon’s information index were 0.2, 1.28 and 0.3, respectively. Allium kuhsorkhense exhibited the greatest level of variation (He: 0.18), whereas A. stipitatum demonstrated the lowest level of variability (He: 0.05). UPGMA (Unweighted Pair Group Method with Arithmetic mean) analysis showed that Allium accessions have a similarity range of 0.60 to 0.95. Allium scapriscapum composed the most distant group in the dendrogram. The clustered groups of Allium species clearly reflect the recent taxonomic concept of the genus at the subgenus and section levels. The present study showed that the ISSR technique is an effective molecular approach for analyzing genetic diversity and relationship in Allium species.Bangladesh J. Plant Taxon. 22(2): 67-75, 2015 (December)

scholarly journals Interspecific relationships in co-occurring populations of social parasites and their host ants

2013 ◽  
Vol 109 (3) ◽  
pp. 699-709 ◽  
Author(s):  
Magdalena Witek ◽  
Luca Pietro Casacci ◽  
Francesca Barbero ◽  
Dario Patricelli ◽  
Marco Sala ◽  
...  
Keyword(s):  
Social Parasites ◽  
Interspecific Relationships
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