Consulta: creatorFacets:"Streit Jr.,Danilo Pedro"
Registros recuperados: 3
Data/hora: 12/06/2024 10:10:17

Functional integrity of Colossoma macropomum (Cuvier, 1816) sperm cryopreserved with enriched extender solutions
Provedor de dados: 83
Autores: Garcia,Raycon Roberto Freitas; Vasconcelos,Ana Carina Nogueira; Povh,Jayme Aparecido; Oberst,Eneder Rosana; Varela Jr.,Antonio Sérgio; Corcini,Carine Dahl; Streit Jr.,Danilo Pedro.
Cryoprotectant solutions are used to protect the sperm from alterations caused by the low temperature in the cryopreservation process. We evaluated the quality of Colossoma macropomum semen after freezing, using dimethyl sulfoxide (DMSO) as a cryoprotectant, combined with two extender solutions (T1 - Solution 1: Glucose 90.0 g/L, Sodium Citrate 6.0 g/L, EDTA 1.5 g/L, Sodium Bicarbonate 1.5 g/L, Potassium Chloride 0.8 g/L, Gentamycin Sulphate 0.2 g/L, and T2 - Solution 2: Glucose 90.0 g/L, ACP(r)-104 10.0 g/L). Motility rate and motility time did not differ between T1 and T2 and were lower than fresh semen. The number of normal sperm was significantly different in treatments T1 (15.1%) and T2 (21.9%), and both showed a reduction in the percentage of normal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cryopreservation; Cryoprotectant solution; Mitochondrial functionality; Motility; Spermatic DNA.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000300599

Microsatellite analysis of the parental contribution of Piaractus mesopotamicus to the production of offspring in the semi-natural system of reproduction
Provedor de dados: 52
Autores: Povh,Jayme Aparecido; Ribeiro,Ricardo Pereira; Sirol,Rodolfo Nadez; Streit Jr.,Danilo Pedro; Moreira,Heden Luiz Marques; Siewerdt,Frank; Lopera-Barrero,Nelson Mauricio; Mangolin,Claudete Aparecida; Vargas,Lauro.
The objective of this study was to evaluate the genetic diversity and the parental contribution of Piaractus mesopotamicus in the production of offspring in the semi-natural system of reproduction. Twenty parental fishes (eleven males and nine females) and the total of 100 larvae were evaluated by microsatellite marker. The parents and offspring had thirty-one alleles and heterozygosity of 0.550 and 0.563, respectively. The females were fertilised by two up to six males while the males fertilised three up to five females. The contribution of the females and males to the offspring were 66.6 and 58%, respectively. Such results indicated no loss in the genetic variability in the offspring, and the parents had multiple paternity and reasonable contribution to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic variability; Stock enhancement programme; Reproductive management.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000200018

Comparação do sêmen de Curimbá (Prochilodus lineatus) induzido por extrato de hipófise de frango, coelho ou carpa
Provedor de dados: 62
Autores: Streit Jr.,Danilo Pedro; Moraes,Gentil Vanini de; Ribeiro,Ricardo Pereira; Sakaguti,Eduardo Shigueiro; Souza,Ederval Donizeti de; Povh,Jayme Aparecido; Caçador,Walangiery.
Foram selecionados 48 Curimbás (Prochilodus lineatus) e hipofisados com extrato de hipófise de frango (EHF), extrato de hipófise de coelho (EHCo) e o controle com extrato de hipófise de carpa (EHC). Os animais foram induzidos, aleatoriamente, com os tratamentos arranjados em um fatorial de três hormônios e três semanas. Animais tratados com EHF, EHC ou EHCo produziram, em média, 0,65, 0,45 e 0,20 mL de sêmen, respectivamente, havendo diferença (P&lt;0,05) entre os tratamentos com EHF e EHCo, mesmo comportamento verificado para o número médio de espermatozóides totais produzidos. Para os animais tratados com EHCo, houve maior concentração de espermatozóides/mm³ de sêmen quando comparado com os machos induzidos com EHC (P&lt;0,05). Todavia, não houve...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquacultura; Avaliação espermática; Hipófise; Indução hormonal.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962004000300001