scholarly journals Karyotype of Myotis lavali (Chiroptera, Vespertilionidae)

Barbastella ◽  
2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Brunna Almeida ◽  
Roberto Leonan M. Novaes ◽  
Ricardo Moratelli ◽  
Júlia Lins Luz ◽  
Luciana M. Costa ◽  
...  
Keyword(s):  
Diploid Number ◽  
Minas Gerais ◽  
Giemsa Staining ◽  
South American ◽  
The South ◽  
Fundamental Number

Myotis lavali is an insectivorous bat that occurs along the South American Dry Diagonal, extending from the Brazilian Caatinga southward to Paraguayan Alto Chaco. This species was described recently and there is little information about its biology. Herein, we describe the conventional karyotype from three males captured in an arboreal savanna from Vale do Jequitinhonha, State of Minas Gerais, Brazil. The diploid number (2n) and the fundamental number of autosomes (FNa) were 44 and 50, respectively. Its karyotype, in Giemsa staining, is similar to others described for Neotropical Myotis, and it is not useful to identify specimens.

Karyotypes of South-West Pacific Ranid Frogs (Anura:Ranidae)

1996 ◽  
Vol 44 (2) ◽  
pp. 119
Author(s):  
MJ Mahony ◽  
RM Norris ◽  
SC Donnellan
Keyword(s):  
Diploid Number ◽  
Solomon Islands ◽  
Chromosomal Rearrangements ◽  
The South ◽  
West Pacific ◽  
Fundamental Number ◽  
South West ◽  
Telocentric Chromosomes

Karyotypes of 12 species from five genera of Australian, New Guinean and Solomon Islands ranid frogs are reported and for convenience are compared and contrasted with the 2n = 26, fundamental number (FN) = 52 karyotype of Rana, the typical karyotype of the subfamily Raninae. This karyotype was found in the four species of Rana examined. One species, Ceratobatrachus guentheri, had an increased diploid number of 30, a lower FN of 38, and altered relative lengths and centromere positions of pairs 1-5, and several of the smaller pairs. These changes could have resulted from centric fissions and pericentric rearrangements which produced an increase in the number of telocentric chromosomes. Eight species, Batrachylodes vertebralis, Discodeles bufoniformis, D. guppyi, Platymantis boulengeri, P. myersi, P. neckeri, P. solomonis and P. weberi, had reduced diploid numbers and FN. The means by which reduction in diploid number and FN has occurred in these species is unknown, but may involve centric fissions to produce telocentrics, followed by translocation onto other chromosomes, or a process involving pericentric rearrangements to produce telocentric chromosomes followed by fusion of these products. With the exception of Rana, the level of chromosomal rearrangements in the south-west Pacific ranid frogs that occur on archipelagos is high compared with that observed in the continental lineages of this subfamily.

Tadpole and advertisement call of Rhinella pombali (Baldissera, Caramaschi & Haddad, 2004) (Amphibia, Anura, Bufonidae)

Zootaxa ◽  
2010 ◽  
Vol 2370 (1) ◽  
pp. 65 ◽  
Author(s):  
ANA CAROLINA CALIJORNE LOURENÇO ◽  
DÉLIO BAÊTA ◽  
ALINE CRISTINE LOPES DE ABREU ◽  
JOSÉ P. POMBAL JR.
Keyword(s):  
South America ◽  
Atlantic Forest ◽  
Species Group ◽  
Minas Gerais ◽  
The State ◽  
Southeastern Brazil ◽  
Advertisement Call ◽  
South American ◽  
The South

Most species of the South American bufonid toads are placed in Rhinella Fitzinger, 1828 (Frost 2009). Currently, this genus contains 77 species and most of them are distributed in Central and South America (Frost 2009). According to Baldissera et al. (2004), the R. crucifer species group is composed of five species: R. abei (Baldissera, Caramaschi & Haddad, 2004), R. crucifer (Wied-Neuwied, 1821), R. henseli (A. Lutz, 1934), R. ornata (Spix, 1824), and R. pombali (Baldissera, Caramaschi & Haddad, 2004). This species group is widely distributed in northern Argentina, southeastern Brazil, and Uruguay (Baldissera et al. 2004; Frost 2009), and can be found in ponds and streams in forests and open areas (Heyer et al. 1990; Baldissera et al. 2004; Pombal & Gordo 2004; Eterovick & Barata 2006). Herein we describe the tadpole and advertisement call of Rhinella pombali, a species distributed throughout the Atlantic forest and in its transitional areas with the Cerrado in the State of Minas Gerais, southeastern Brazil (Frost 2009).

scholarly journals The South American Plated Catfish Genus Aspidoras R. von Ihering, 1907,

1976 ◽  
Vol 46 (1) ◽  
pp. 107-131 ◽  
Author(s):  
H. Nijssen ◽  
I.J.H. Isbrücker
Keyword(s):  
New Species ◽  
Type Species ◽  
Minas Gerais ◽  
Nominal Species ◽  
South American ◽  
Related Genus ◽  
The South ◽  
Mato Grosso ◽  
Morphological Differences

The South American callichthyid catfish genus Aspidoras R. von Ihering, 1907, is redefined on the basis of thirteen nominal species. Morphological differences with the related genus Corydoras Lacépède, 1803, are discussed. Two species originally described in Corydoras, viz., Corydoras raimundi and Corydoras pauciradiatus are herein transferred to Aspidoras. Aspidoras now consists of the following previously described nominal species: (1) Aspidoras rochai R. von Ihering, 1907 (type-species of the genus), known from Brazil, Est. Ceará, Fortaleza, (2) Aspidoras raimundi (Steindachner, 1907) from Brazil, Est. Moararnhão, Rio Parnaíba system, (3) Aspidoras lakoi P. de Miranda Ribeiro, 1949, from Brazil, Est. Minas Gerais, Rio Paranaíba system, and (4) Aspidoras pauciradiatus (Weitzman & Nijssen, 1970) from Brazil, Est. Goiás, Rio Araguaia system. Nine new species from Brazil are described herein: (1) Aspidoras albater from Est. Goiás, Rio Tocantinzinha, (2) Aspidoras brunneus from Est. Mato Grosso, Serra do Roncador, (3) Aspidoras carvalhoi from Est. Ceará, Guaramiranga, (4) Aspidoras eurycephalus from Est. Goiás, Córego Vermelho, (5) Aspidoras fuscoguttatus from Est. Mato Grosso, Córrego Corguinho, (6) Aspidoras maculosus from Est. Bahia, Rio Itapicurú system, (7) Aspidoras menezesi from Est. Ceará, Rio Salgado system, (8) Aspidoras poecilus from Est. Mato Grosso, upper Rio Xingu, and from Est. Goiás, Rio Araguaia, and (9) Aspidoras spilotus from Est. Ceará, a tributary of Rio Acaráu, and from Cachoeira do Gusmão. In addition to these nominal species some material is described and figured under the provisional designation of Aspidoras sp. aff. poecilus. These specimens may represent another species, but are not formally named.

Cnidochloa: A New Genus of Grasses from Brazil (Poaceae: Panicoideae: Paniceae)

2020 ◽  
Vol 105 (2) ◽  
pp. 183-194
Author(s):  
Fernando O. Zuloaga ◽  
Sandra S. Aliscioni ◽  
M. Amalia Scataglini
Keyword(s):  
New Genus ◽  
Phylogenetic Position ◽  
South American ◽  
The South ◽  
South American Species ◽  
Molecular Characters

Generic boundaries of the South American species Panicum longipedicellatum Swallen are explored and compared with allied genera of the tribe Paniceae. On the basis of morphological, anatomical, and molecular characters a new genus, Cnidochloa Zuloaga, is proposed. The phylogenetic position of the new genus within the Paniceae is evaluated.

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