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dc.contributor.author
Honji, Renato Massaaki  
dc.contributor.author
Araújo, Bruno Cavalheiro  
dc.contributor.author
Caneppele, Danilo  
dc.contributor.author
Lo Nostro, Fabiana Laura  
dc.contributor.author
Guimaraes Moreira, Renata  
dc.date.available
2023-09-12T13:56:08Z  
dc.date.issued
2022-04  
dc.identifier.citation
Honji, Renato Massaaki; Araújo, Bruno Cavalheiro; Caneppele, Danilo; Lo Nostro, Fabiana Laura; Guimaraes Moreira, Renata; Dynamics of ovarian maturation during the annual reproductive cycle of the endangered fish Steindachneridion parahybae (Siluriformes: Pimelodidae) in captivity; Wiley Blackwell Publishing, Inc; Journal of Fish Biology; 101; 1; 4-2022; 55-68  
dc.identifier.issn
0022-1112  
dc.identifier.uri
http://hdl.handle.net/11336/211233  
dc.description.abstract
To characterize the female reproductive biology of the endangered species Steindachneridion parahybae in captivity, the authors used the concentration of gonadal steroids and the oocyte development during the annual reproductive cycle (RC) and after artificial induced spawning (AIS) until 48 h. Three stages of gonadal maturation were identified, based on morphological and physiological features: early maturation or previtellogenic (PRV) oocyte, advanced maturation or vitellogenic (VTG) oocyte and regression (REG) or follicular atresia. They identified and characterized the following stages of germ cells: oogonia, perinucleolar and cortical alveoli, and VTG and atretic oocytes during RC. The oestradiol levels were higher in PRV than those in VTG and REG during the RC, whereas androgens showed higher levels of oestradiol in VTG than those in PRV and REG. The progestogen levels remained unchanged during the whole RC. The final oocyte maturation (FOM) was achieved after AIS and postovulatory follicles (POF) were identified. Plasma concentration of progestogens (17α,20β-dihydroxy-pregnen-3-one and 17α-hydroxyprogesterone) increased considerably after AIS, remaining high up to 6 h after AIS, and progressively decreased over time after AIS. During RC, the lack of FOM and POFs reveals that captivity negatively impacts S. parahybae reproduction. Nonetheless, the VTG stage of oocytes, reached during RC, is suitable for ovulation induction with artificial hormone manipulation, enabling the reproduction of this species in captivity and being essential for the success of fish farming and/or fish conservation programmes (conservationist aquaculture).  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Wiley Blackwell Publishing, Inc  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
11-KETO  
dc.subject
17Α,20Β-DIHYDROXY-4-PREGNEN-3-ONE  
dc.subject
17Β-ESTRADIOL  
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OVARIAN DEVELOPMENT  
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TESTOSTERONE  
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TESTOSTERONE  
dc.subject.classification
Otros Tópicos Biológicos  
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Ciencias Biológicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Dynamics of ovarian maturation during the annual reproductive cycle of the endangered fish Steindachneridion parahybae (Siluriformes: Pimelodidae) in captivity  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2023-07-06T22:39:58Z  
dc.journal.volume
101  
dc.journal.number
1  
dc.journal.pagination
55-68  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Honji, Renato Massaaki. Universidade de Sao Paulo; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina  
dc.description.fil
Fil: Araújo, Bruno Cavalheiro. No especifíca;  
dc.description.fil
Fil: Caneppele, Danilo. No especifíca;  
dc.description.fil
Fil: Lo Nostro, Fabiana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina  
dc.description.fil
Fil: Guimaraes Moreira, Renata. Universidade de Sao Paulo; Brasil  
dc.journal.title
Journal of Fish Biology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1111/jfb.15070