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| Pfingstl, T.; Schäffer, S.; Ebermann, E.; Krisper, G.. |
| Based on morphological, morphometric and genetic data Scutovertex ianus sp. nov. is described as a new oribatid mite species. The traditional comparison with the morphologically most similar congeneric S. minutus and S. sculptus demonstrated that the new species shares certain characters with both species, but can be clearly identified by indistinct cuticular notogastral foveae in combination with short spiniform notogastral setae. Furthermore the eggs of S. ianus exhibit a different fine structure of the exochorion. The morphometric analysis of 16 continuous morphological variables separated the three species, S. minutus, S. sculptus and S. ianus with a certain overlap indicating minor size and shape differences in overall morphology. The molecular... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cytochrome oxidase I; Exochorion; Monophyly; Scutoverticidae; Taxonomy; 42.74. |
| Ano: 2010 |
URL: http://www.repository.naturalis.nl/record/335469 |
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| Spadella,Maria A.; Desan,Simone P.; Henriques,Teresa C. B. P. O.; Oliveira,Claudio. |
| ABSTRACT Callichthyidae comprises a well-corroborated monophyletic group divided into two subfamilies: Corydoradinae and Callichthyinae. A recent proposal, based on molecular data, suggests that Corydoradinae is composed by nine monophyletic lineages, possibly genera. The species pertaining to those lineages have extensive modification in the size of genome, including diploid, tetraploid and octoploid species. Considering the occurrence of these monophyletic lineages and that the variations in DNA content may imply in significant alterations on the structure of spermatozoa, this study analyzed the morphology of the male reproductive system and the morphometry of the head of the spermatozoa of representatives of the nine lineages of Corydoradinae, seeking... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Monophyly; Morphometry; Spermatozoa; Variations in DNA. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000100221 |
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| Robe,Lizandra Jaqueline; Silva,Luciano Basso da; Loreto,Elgion Lucio da Silva. |
| Traditionally, the Drosophila guarani species group has been divided into two subgroups: the guarani and the guaramunu subgroups. Two, out of the four species included in this research, are members of the guarani subgroup (D. ornatifrons Duda, 1927 and D. subbadia Paterson & Mainland, 1943) and two are included in the guaramunu subgroup (D. maculifrons Duda, 1927 and D. griseolineata Duda, 1927). However, some authors have suggested that D. maculifrons and D. griseolineata are much closer to some species of the Drosophila tripunctata group than to some of the species of the guarani group. To add new data to the matter under dispute, Polyacrylamide Gel Eletrophoresis (PAGE-SDS) was used for the analysis and comparison of protein composition and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drosophila; Guarani group; Monophyly; Phylogeny; RAPD. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262002000400004 |
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