<htm>Desenvolvimento gonadal de <i>Deuterodon langei</i> Travassos (Teleostei: Characidae)</htm>
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چکیده
منابع مشابه
The life history of Pygidiopsis macrostomum Travassos, 1928 (Digenea: Heterophyidae).
The life history of the trematode Pygidiopsis macrostomum Travassos, 1928 is described for the first time. Rediae and cercariae were obtained from naturally infected snails Heleobia australis (d Orbigny), a new first intermediate host. Metacercariae were found encysted in the mesenteries of three naturally infected guppies, Phalloptychus januarius (Hensel), Jenynsia multidentata (Jenyns) (new h...
متن کاملCosmocerca parva Travassos, 1925 (Nematoda: Cosmocercidae) in toads from Argentina.
Cosmocerca parva Travassos 1925 (Asca-ridida, Cosmocercoidea, Cosmocercidae) was originally described from Helosia nasus (Leptodactylidae) of Angra dos Reis, State of Rio de Janeiro, Brazil. It has also been reported in Leptodactylus chaquensis, L. elenae, Hyla fuscovaria and Bufo paracnemis from Paraguay (MR Baker & C Vaucher 1984 Rev Suisse Zool 91: 299-307). This note enlarges the known morp...
متن کاملGonadal dysgenesis
Disorders of sex development (DSD), previously referred to as intersex disorders, comprise a variety of congenital diseases with anomalies of the sex chromosome, the gonads, the reproductive ducts and the genitalia. DSD is loosely classified into four groups on the basis of histological features of the gonadal tissue: XX-DSD with two ovaries (female pseudohermaphroditism), XY-DSD with two testi...
متن کاملAdditional data on the synlophe of Stilestrongylus aculeata (Travassos, 1918) and Stilestrongylus eta (Travassos, 1937) (Heligmonellidae) parasitic in Akodon montensis (Sigmodontinae) from the Atlantic Forest.
Additional data on the synlophe and morphological measurements are provided for the heligmonellids Stilestrongylus aculeata (Travassos, 1918) and Stilestrongylus eta (Travassos, 1937), collected from Akodon montensis Thomas, 1913, of the Atlantic Forest, Rio de Janeiro, Brazil. The synlophe of S. aculeata is characterized by 19 cuticular middle body ridges in males and 24 cuticular middle body ...
متن کاملInhibin immunoreactivity in gonadal and non-gonadal tumors.
Inhibin immunoreactivity was estimated in a number of gonadal and non-gonadal tumors. Dog Sertoli cell tumors and human granulosa cell and Leydig cell tumors contained high concentrations of inhibin-like material. Levels, comparable with those in normal testes and ovaries were detected in human testicular non-seminomas and in ovarian cystadenomas, thecomas and adenofibromas. No activity was fou...
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ژورنال
عنوان ژورنال: Acta Biológica Paranaense
سال: 2007
ISSN: 2236-1472,0301-2123
DOI: 10.5380/abpr.v36i0.9802