Hydrolycus Müller & Troschel, 1844 (Osteichthyes, Cypriniformes): confirmation proposée de Hydrocyon scomberoides Cuvier, 1819 comme espèce-type. Case 2556

Biologie de Hyalomma dromedarii (Koch 1844)

Description de Hyalomma dromedarii (Koch 1844) Morphologie de la larve et de la nymphe

Preliminary Qualitative Analysis on mtDNA in Astyanax fasciatus Populations Cuvier, 1819 (Teleostei; Characidae) Indicate Population Distinctiveness

A preliminary qualitative analysis of genetic variability status in Astyanax fasciatus (Cuvier, 1819) from upper Tibagi River headwaters and Vila Velha State Park (VVSP) was carried out by enzymatic digestion (RFLP) of DLoop region from mtDNA. The results showed that Tibagi and VVSP populations were genetically different.

Histopathological changes in the gills of naturally- infected Capoeta aculeata (Cuvier and Valenciennes, 1844) with parasites

Histopathological changes in gills of a native fish Capoeta aculeata, naturally-infected with parasites were studied. The specimens (15.5 to 22.8 cm) were collected from Choghakhor lagoon in West Iran. 35 (11%) of the total 318 studied fishes were infected with gill parasites. Overall, six protozoan and metazoan parasite species were collected from fishes including Ichthyophthirius multifiliis,...

Restriction site heteroplasmy in the mitochondrial DNA of Brycon opalinus (Cuvier, 1819) (Characiformes, Characidae, Bryconiae).

Homoplasmy is a feature usually found in the mtDNA of higher animal taxa. On the other hand, the presence of two classes of mtDNA in the same cell or organism is rare and may appear in length or site variation. Data from mtDNA RFLP analysis of Brycon opalinus populations (Cuvier, 1819; Characiformes, Characidae, Bryconinae) revealed site heteroplasmy from endonuclease NheI digestion. Southern b...