KARYOLOGY OF NORTH AMERICAN NATRICINE SNAKES (FAMILY COLUBRIDAE) OF THE GENERA NATRIX AND REGINA

1973 ◽  
Vol 15 (2) ◽  
pp. 355-361 ◽  
Author(s):  
C. William Kilpatrick ◽  
Earl G. Zimmerman
Keyword(s):  
Sex Chromosomes ◽  
North American ◽  
Related Species ◽  
Related Genus ◽  
Chromosomal Variation ◽  
Closely Related Species ◽  
Old World ◽  
Water Snake ◽  
The Family

Four species of the water snake genus Natrix have a distinctly different pattern of chromosomal morphology than found in two species of the related genus Regina. Natrix all have a karyotype with seven pairs of large or medium-sized submetacentric autosomes, three pairs of medium-sized subtelocentric autosomes, and seven pairs of small metacentric autosomes. All have a 2n of 36 with a submetacentric Z and submetacentric or subtelocentric W. The autosomal complement of Regina consists of seven pairs of large to medium-sized submetacentrics, five pairs of medium-sized submetacentrics, and five pairs of small metacentrics. The Z and W are both submetacentric chromosomes. The sex chromosomes are easily distinguished in both genera. The relationships of Natrix and Regina and Old World Natrix are discussed, as well as chromosomal variation in closely related species in the family Colubridae.

On the systematic status of Isopericlimenaeus Marin, 2012 and its type species, Periclimenaeus gorgonidarum (Balss, 1913) (Crustacea: Decapoda: Palaemonidae)

Zootaxa ◽  
2019 ◽  
Vol 4614 (2) ◽  
pp. 353 ◽  
Author(s):  
JIN-HO PARK ◽  
SAMMY DE GRAVE ◽  
WON KIM
Keyword(s):  
Related Species ◽  
Type Species ◽  
The Philippines ◽  
Diagnostic Character ◽  
Valid Species ◽  
Related Genus ◽  
Closely Related Species ◽  
Systematic Status ◽  
The Family ◽  
Molecular Comparison

The palaemonid genus Isopericlimenaeus is currently comprised of only the type species, Isopericlimenaeus gorgonidarum, with the diagnostic character of the genus being the presence of a molar and fossa structure on both second chelipeds. Periclimenaeus uropodialis is a closely related species, which has either been considered a synonym of I. gorgonidarum or placed as a valid species in the related genus, Periclimenaeus. During fieldwork in the Philippines, Taiwan and Korea, several species of Periclimenaeus and other sponge associated shrimps belonging to the family Palaemonidae were collected, including I. gorgonidarum and P. uropodialis. Based on a morphological and molecular comparison, it is demonstrated that both taxa are conspecific and that Isopericlimenaeus is a junior synonym of Periclimenaeus.

The Natural Groups of Species in the Genus Ips De Geer (Coleoptera: Scolytidae) in North America

1963 ◽  
Vol 95 (5) ◽  
pp. 508-516 ◽  
Author(s):  
G. R. Hopping
Keyword(s):  
North America ◽  
North American ◽  
Related Species ◽  
North American Species ◽  
Closely Related Species ◽  
The North ◽  
The World ◽  
Group Relationships ◽  
Natural Groups

AbstractThe genus Ips is one of four closely related genera in the tribe Ipini, sub-tribe Ipina (De Geer 1775, Balachowsky 1949, Nunberg 1954, Hopping 1963). There are now 32 species of Ips recognized in North America, with a few more as yet undescribed. This paper defines the groups of closely related species with observations on the group relationships of species from other parts of the world. Work is in progress to define the North American species in each group.

Karyotype Characterisation of Two Australian Dragon Lizards (Squamata: Agamidae: Amphibolurinae) Reveals Subtle Chromosomal Rearrangements Between Related Species with Similar Karyotypes

2020 ◽  
Vol 160 (10) ◽  
pp. 610-624
Author(s):  
Shayer M.I. Alam ◽  
Stephen D. Sarre ◽  
Arthur Georges ◽  
Tariq Ezaz
Keyword(s):  
Sex Chromosomes ◽  
Related Species ◽  
Chromosomal Rearrangements ◽  
In Situ Hybridisation ◽  
Fluorescence In Situ Hybridisation ◽  
Closely Related Species ◽  
Pogona Vitticeps ◽  
Molecular Cytogenetic Techniques ◽  
Heterogametic Sex

Agamid lizards (Squamata: Agamidae) are karyotypically heterogeneous. Among the 101 species currently described from Australia, all are from the subfamily Amphibolurinae. This group is, with some exceptions, karyotypically conserved, and all species involving heterogametic sex show female heterogamety. Here, we describe the chromosomes of 2 additional Australian agamid lizards, <i>Tympanocryptis lineata</i> and <i>Rankinia diemensis</i>. These species are phylogenetically and cytogenetically sisters to the well-characterised <i>Pogona vitticeps,</i> but their sex chromosomes and other chromosomal characteristics are unknown. In this study, we applied advanced molecular cytogenetic techniques, such as fluorescence in situ hybridisation (FISH) and cross-species gene mapping, to characterise chromosomes and to identify sex chromosomes in these species. Our data suggest that both species have a conserved karyotype with <i>P. vitticeps</i> but with subtle rearrangements in the chromosomal landscapes. We could identify that <i>T. lineata</i> possesses a female heterogametic system (ZZ/ZW) with a pair of sex microchromosomes, while <i>R. diemensis</i> may have heterogametic sex chromosomes, but this requires further investigations. Our study shows the pattern of chromosomal rearrangements between closely related species, explaining the speciation within Australian agamid lizards of similar karyotypes.

A TAXONOMIC REVISION OF THE GENUS PSEUDOPHYSALOPTERA BAYLIS, 1934 (NEMATODA: PHYSALOPTERIDAE)

1963 ◽  
Vol 41 (6) ◽  
pp. 1069-1077 ◽  
Author(s):  
G. A. Schad
Keyword(s):  
North American ◽  
Related Species ◽  
Taxonomic Revision ◽  
Distinct Species ◽  
Closely Related Species ◽  
Tentative Identification

The genus Pseudophysaloptera, recognized as a genus distinct from Physatoptera, is tentatively considered monotypic. The several species previously assigned to the genus Pseudophysaloptera, and the closely related species Physaloptera kotlani, have been reduced to one polytypic species, Pseudophysaloptera formosana, with two subspecies, P. f. formosana and P. f. soricina. The former occurs in Oriental species of Suncus, while the latter occurs in Palaearctic and Ethiopian soricid insectivores. North American specimens, which may represent a distinct species, are tentatively assigned to P. f. soricina. Presently available collections are only sufficient for a tentative identification of the Nearctic form.

scholarly journals The Occurrence of Quill Mites (Arachnida: Acariformes: Syringophilidae) on Bee-Eaters (Aves: Coraciiformes: Meropidae: Merops) of Two Sister Clades

Animals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3500
Author(s):  
Maciej Skoracki ◽  
Jakub Z. Kosicki ◽  
Bozena Sikora ◽  
Till Töpfer ◽  
Jan Hušek ◽  
...  
Keyword(s):  
New Species ◽  
Sri Lanka ◽  
Papua New Guinea ◽  
Related Species ◽  
The Philippines ◽  
Closely Related Species ◽  
Sister Clade ◽  
The Family ◽  
Host Lineage ◽  
A New Species

We studied the quill mite fauna of the family Syringophilidae, associated with bee-eaters. We examined 273 bird specimens belonging to nine closely related species of the genus Merops, representing two phylogenetic sister clades of a monophyletic group. Our examination reveals the presence of two species of the genus Peristerophila, as follows: (1) a new species Peristerophila mayri sp. n. from Merops viridis in the Philippines, M. leschenaulti in Nepal and Sri Lanka, and M. orientalis in Sri Lanka; and (2) P. meropis from M. superciliosus in Tanzania and Egypt, M. persicus in Sudan, Tanzania, Liberia, Senegal, Kenya, and D.R. Congo, M. ornatus in Papua New Guinea, M. philippinus in Thailand, Indonesia and Sri Lanka, and M. americanus in the Philippines. The prevalence of host infestations by syringophilid mites varied from 3.1 to 38.2%. The distribution of syringophilid mites corresponds with the sister clade phylogenetic relationships of the hosts, except for P. meropis associated with Merops americanus. Possible hypotheses for the host lineage shift are proposed.

scholarly journals Targets, Tactics, and Cooperation in the Play Fighting of Two Genera of Old World Monkeys (Mandrillus and Papio):Accounting for Similarities and Differences

2019 ◽  
Vol 32 ◽  
Author(s):  
Kelly L. Kraus ◽  
Vivien C. Pellis ◽  
Sergio M. Pellis
Keyword(s):  
Related Species ◽  
Species Differences ◽  
The Body ◽  
Old World Monkeys ◽  
Closely Related Species ◽  
Old World ◽  
Competition And Cooperation ◽  
Play Fighting ◽  
Attack And Defense ◽  
Bodily Contact

Play fighting in many species involves partners competing to bite one another while avoiding being bitten. Species can differ in the body targets that are bitten and the tactics used to attack and defend those targets. However, even closely related species that attack and defend the same body target using the same tactics can differ markedly in how much the competitiveness of such interactions is mitigated by cooperation. A degree of cooperation is necessary to ensure that some turn-taking between the roles of attacker and defender occurs, as this is critical in preventing play fighting from escalating into serious fighting. In the present study, the dyadic play fighting of captive troops of 4 closely related species of Old World monkeys, 2 each from 2 genera of Papio and Mandrillus, was analyzed. All 4 species have a comparable social organization, are large bodied with considerable sexual dimorphism, and are mostly terrestrial. In all species, the target of biting is the same – the area encompassing the upper arm, shoulder, and side of the neck – and they have the same tactics of attack and defense. However, the Papio species exhibit more cooperation in their play than do the Mandrillus species, with the former using tactics that make biting easier to attain and that facilitate close bodily contact. It is possible that species differences in how rigidly dominance relationships are maintained are expressed in the play of juveniles by altering the balance between competition and cooperation.

Inosperma subsphaerosporum (Inocybaceae), a new species from Hainan, tropical China

Phytotaxa ◽  
2021 ◽  
Vol 502 (2) ◽  
pp. 169-178
Author(s):  
LUN-SHA DENG ◽  
WEN-JIE YU ◽  
NIAN-KAI ZENG ◽  
LI-JIE LIU ◽  
LI-YUE LIU ◽  
...  
Keyword(s):  
New Species ◽  
Molecular Phylogeny ◽  
South Asia ◽  
Related Species ◽  
Hainan Province ◽  
Closely Related Species ◽  
Old World ◽  
Thin Walled ◽  
Tropical China ◽  
A New Species

Inosperma subsphaerosporum sp. nov. is described from Hainan Province of China, based on morphological features and molecular phylogeny. The new species is characterized by a medium-sized basidioma, a scaly-fibrillose to rimulose pileus, subglobose to globose basidiospores, and thin-walled cheilocystidia. Moreover, I. subsphaerosporum is phylogenetically placed in an Old World tropical clade, in which all members described are from South Asia. Detailed descriptions, color photographs as well as comparisons between the new species and its closely related species are provided.

Synopsis of the genus Paraleuctra (Plecoptera: Leuctridae) from China

Zootaxa ◽  
2010 ◽  
Vol 2350 (1) ◽  
pp. 46 ◽  
Author(s):  
WEIHAI LI ◽  
YUNBING WANG ◽  
DING YANG
Keyword(s):  
Related Species ◽  
Closely Related Species ◽  
The Family

A species of the family Leuctridae, Paraleuctra tianmushana sp. nov., is described from Zhejiang and Henan, China. Its relationship with closely related species is discussed and a key to Chinese species of Paraleuctra is presented.

Phenetic variation between some species in the family Phytoseiidae (Acarina: Gamasida)

1980 ◽  
Vol 58 (2) ◽  
pp. 184-197 ◽  
Author(s):  
D. A. Chant ◽  
R. I. C. Hansell ◽  
H. J. Rowell
Keyword(s):  
North America ◽  
Related Species ◽  
Morphological Diversity ◽  
Multivariate Techniques ◽  
Closely Related Species ◽  
Frequency Distributions ◽  
Consistent Trend ◽  
The Family ◽  
Phenetic Diversity ◽  
Species Groups

Examination of differences in phenetic variation between a number of closely related species of mites of the family Phytoseiidae from four widely different environments in North America, ranging from subarctic to subtropical, was undertaken. Phenetic variation was measured by (1) determining the numbers of taxa recorded in given areas as a measure of the richness of species and genera; (2) determining interspecific morphological diversity using multivariate techniques based on frequency distributions of the taxonomic distances between pairs of species; and (3) by using phenogram analyses to determine the species groups in a given area.The results show a consistent trend in the degree of diversity. The more northerly communities have fewer taxa and these show little phenetic diversity, whereas the more southern communities have more taxa and they show greater phenetic diversity.

Mites of the family Parasitidae Oudemans, 1901 (Acari: Mesostigmata) from Japan: a new species of Vulgarogamasus Tichomirov, 1969, and a key to Japanese species

Zootaxa ◽  
2018 ◽  
Vol 4429 (2) ◽  
pp. 379 ◽  
Author(s):  
MOHAMED W. NEGM ◽  
TETSUO GOTOH
Keyword(s):  
New Species ◽  
Related Species ◽  
Japanese Literature ◽  
Key To Species ◽  
Japanese Species ◽  
Closely Related Species ◽  
The Family ◽  
Ibaraki Prefecture ◽  
Morphological Differences ◽  
A New Species

Vulgarogamasus edurus sp. nov. (Acari: Parasitidae) is described based on females, deutonymphs and males extracted from leaf litter and soil in Ami, Ibaraki Prefecture, Japan. Morphological differences between the new species and its closely related species, Vulgarogamasus fujisanus (Ishikawa, 1972), are recorded based on the examination of type materials. Information about parasitid mites reported in Japanese literature is reviewed, and a key to species is provided. 

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