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Fertilização e desenvolvimento embrionário: Morfometria e análise estereomicroscópica dos ovos dos híbridos de surubins (pintado, Pseudoplatystoma corruscans x cachara, Pseudoplatystoma fasciatum)
(2007-01-01)
This study aimed to analyze the morphometry of hybrids' eggs under stereomicroscopy. The induced reproduction was carried out in specimens of pintado's females (P. corruscans) and cachara's males (P. fasciatum) from Cepta ...
Cytogenetic characterization of F1, F2 and backcross hybrids of the Neotropical catfish species Pseudoplatystoma corruscans and Pseudoplatystoma reticulatum (Pimelodidae, Siluriformes)
(Sociedade Brasileira de Genética, 2012-01-01)
The cytogenetic characteristics of Pseudoplatystoma corruscans and Pseudoplatystoma reticulatum and their F1, F2 and backcross hybrids were assessed by using chromosome banding techniques. The diploid number of 56 chromosomes ...
Abundância natural do isótopo estável de carbono (13C) de alguns itens alimentares e sua contribuição no crescimento de juvenis de pintado, Pseudoplatystoma corruscans (Agassiz, 1829) (Osteichthyes, Pimelodidae)
(2002-12-01)
The aim of this study is to determine the natural abundance of carbon stable isotope (13C) of some food components and determine its contribution to the pintado juvenile growth, in laboratory conditions. 150 fishes were ...
Isolation and characterization of microsatellite loci in Pseudoplatystoma corruscans (Siluriformes : Pimelodidae) and cross-species amplification
(Blackwell Publishing, 2005-09-01)
A total of five polymorphic microsatellites loci from Pseudoplatystoma corruscans were isolated and characterized. A population survey involving 43 specimens resolved a large number of alleles (range seven to eight among ...
Cytogenetic mapping of H1 histone and ribosomal RNA genes in hybrids between catfish species Pseudoplatystoma corruscans and Pseudoplatystoma reticulatum
(2013-01-01)
A physical chromosome mapping of the H1 histone and 5S and 18S ribosomal RNA (rRNA) genes was performed in interspecific hybrids of Pseudoplatystoma corruscans and P. reticulatum. The results showed that 5S rRNA clusters ...
Observation of the embryonic development in Pseudoplatystoma coruscans (Siluriformes: Pimelodidae) under light and scanning electron microscopy
(Cambridge University Press, 2008-11-01)
Pseudoplatystoma coruscans is a very popular species for tropical fish culture as it has boneless meat of delicate taste and firm texture. Few studies on fish reproductive biology refer to the morphological features of ...
Histopatologia do intestino de Pseudoplatystoma fasciatum (osteichthyes, pimelodidae) parasitados com cestodas proteocefalídeos e nematodas
(Inst Pesca, 2009-01-01)
This work describes intestine histopathology of Pseudoplatystoma fasciatum infected by endohelminths. Nineteen specimens were caught from Aquidauna River, Mato Grosso do Sul State, in October 2005 and submitted to necropsy, ...
Brazilian catfish parasitized by Epistylis sp. (Ciliophora, Epistylididae), with description of parasite intensity score
(2013-01-01)
The determination of mean intensity of parasitism for colony-forming sessile protozoan such as Epistylis has been a great problem in parasitological studies. Some alternatives have been proposed by researchers for laboratory ...