Consulta: creatorFacets:"Fontanetti,Carmem Silvia"
Registros recuperados: 6
Data/hora: 01/06/2024 02:15:37

Morphology of the testicles of some brazilian species of Diplopoda and their phyllogenetic relations
Provedor de dados: 104
Autores: Fontanetti,Carmem Silvia.
The morphology of the testicles of some Brazilian species of Diplopoda is described. One type is scalariform, with two deferent ducts and the other consists of some single deferent duct. Phyllogenetic considerations on the structure are made.
Tipo: Info:eu-repo/semantics/article
Ano: 1990
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751990000400013

Description of a new species and the karyotype of the cavernicolous millipede Pseudonannolene Silvestri and the karyotype of Pseudonannolene strinatti Mauriès (Diplopoda, Pseudonannolenida, Pseudonannolenidae)
Provedor de dados: 104
Autores: Fontanetti,Carmem Silvia.
Pseudonannolene tocaiensis, sp.n. is described from Brazil, São Paulo, Itirapina. The karyotypes of P. tocaiensis, sp.n. and P. strinatti Mauriès, 1974 are also presented, both species are found in cave environments. P. tocaiensis has 2n=20, XY and P. strinatti, 2n=16; it was not possible to observe the sex determination mechanism in the latter.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diplopoda; Pseudonannolene; Cave millipedes; Cytogenetic; Millipedes.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000200012

Description of three cave diplopods of Pseudonannolene Silvestri (Diplopoda, Pseudonannolenida, Pseudonannolenidae)
Provedor de dados: 104
Autores: Fontanetti,Carmem Silvia.
Three new species of Pseudonannolene Silvestri, 1895 diplopods are described: P. anapophysis (type locality, "Caverna Lapão", Bahia), P. imbirensis (type locality, "Caverna São Mateus", Imbira III, Goiás), and P. chaimowiczi (Minas Gerais, Bahia)
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diplopoda; Pseudonannolene; Millipedes; Cave fauna; Neotropics.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000200013

Effectiveness of estradiol valerate on sex reversion in Astyanax altiparanae (Characiformes, Characidae)
Provedor de dados: 52
Autores: Bem,Jaqueline Cristina de; Fontanetti,Carmem Silvia; Senhorini,José Augusto; Parise-Maltempi,Patricia Pasquali.
The objective of this study was to evaluate the effectiveness of estradiol valerate in an attempt to feminize the male Astyanax altiparanae. One thousand newly-hatched larvae were randomly distributed in four incubators. During a period of 30 days, estradiol valerate was administered in different dosages (20, 40, and 80 mg/kg of diet); the control group did not receive hormone in the diet. After 161 days of hatching, biometry was performed on 50 fishes per treatment group, and the gonads were analyzed. The hormone treatments were effective in feminizing A. altiparanae, achieving 70-76% of the desired sex, while the control treatment had 44% females. The hormone did not affect the growth of fish.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Astyanax altiparanae; Characidae; Feminization; Sex Reversion; Estrogen.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000200015

Cytogenetics of six Brazilian species of Psocoptera
Provedor de dados: 54
Autores: Zefa,Edison; Fontanetti,Carmem Silvia; Mesa,Alejo.
The karyotypes of the following six species of Brazilian Psocoptera are reported: Caecillius sp. (Caecillidae), Triplocania ? caudata New (Ptiloneuridae), Brachinodiscus cf. lepidus (Banks) (Psocidae), Psococerastis interrupta New (Psocidae), Ptycta nr reticulata New (Psocidae) and Trichadenotecnum sinuatum New (Psocidae). All of them had males with 2n = 17 and an XO sex determining mechanism.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytogenetics; Psocoptera.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551996000400011

Karyotype of a termitophilic species of Diplopoda (Polydesmida, Chelodesmidae)
Provedor de dados: 54
Autores: Fontanetti,Carmem Silvia.
This report describes the karyotype of a Brazilian Diplopod species (Arthropoda), Sandalodesmus gasparae (Schubart, Acta Zool. Lilloana Inst. "Miguel Lillo" 2: 321-440,1944), collected from a termite mound Cornitermes bequaerti. This species has 2n = 12. The sex pair could not be distinguished.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Karyotype; Termitophilic; Diplopoda.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551996000400010