Oocyte quality of tambaqui (Colossoma macropomum) during the reproductive season

Galo, Juliana Minardi; Ribeiro, Ricardo Pereira; Streit-Junior, D P; Albuquerque, Daniele Menezes; Fornari, Darci Carlos; Roma, C F C; Guerreiro, Luis Ricardo Jayme

doi:10.1590/1519-6984.10113

Cited by 10 publications

(6 citation statements)

References 27 publications

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“…Nevertheless, Galo et al (2015) and Chellappa et al (1996) obtained fertilization rates of 86.3% and 80%, respectively, in a single spawning of C. macropomum, which are similar to those that resulted in the present experiment. In addition, the hatching rates in the present study (in both the first and second spawnings) were similar to the 89% rate that was observed by Galo et al (2015) in a single spawning of C. macropomum.…”

Section: Discussionsupporting

confidence: 89%

“…The total oocyte weight and production index obtained in both the first and second spawnings were similar to those reported by Souza et al (2018) in a single spawning of C. macropomum. There was a greater total oocyte weight (Galo et al, 2015) and absolute fecundity (Vieira et al, 1999) with females that had greater body weights, but without great changes in production index (ratio between oocyte weight and fish weight), as demonstrated in the study of Galo et al (2015).…”

Section: Discussionmentioning

confidence: 67%

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Colossoma macropomum females can reproduce more than once in the same reproductive period

Pires

Filho

Sanches

et al. 2018

Animal Reproduction Science

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The aim of the present study was to evaluate induced reproduction in Colossoma macropomum females at the beginning of the reproductive period and 75 days after the first spawning in which reproduction was induced. The experiment was conducted in Nova Mutum, MT, Brazil. Eight 4-year-old C. macropomum females with an average body weight of 6.7 ± 2.4 kg were used. Hormonal induction was performed at the beginning of the reproductive period and repeated 75 days after the first spawning. The following variables were then evaluated: weight of released oocytes, production index, absolute fecundity, oocyte diameter, fertilization rate, and hatching rate. Of the eight females that spawned during the first hormonal induction, three (37.5%) spawned again 75 days after the first spawning. Two females died after the first induced spawning. None of the means of the evaluated variables differed between the two induced spawnings, except for fertilization rate, which was greater (P < 0.05) with the first spawning (88.8 ± 6.1%) than in the second (74.1 ± 10.4%). The results of the present study indicate that C. macropomum females can reproduce again 75 days after a first induced spawning.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 67%

Colossoma macropomum females can reproduce more than once in the same reproductive period

Pires

Filho

Sanches

et al. 2018

Animal Reproduction Science

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“…Induced reproduction of the tambaqui among kin specimens is not common due to the fish´s high fecundity (GALO et al, 2015). Increase in endogamy may eliminate important allele combinations such as those related to pathogen resistance and adaptability.…”

mentioning

confidence: 99%

Genetic diversity of tambaqui broodstocks in stock enhancement programs

Neto

Ayres

Streit

et al. 2017

SCA

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Natural populations of tambaqui (Colossoma macropomum) have significantly decreased in recent decades especially due to human extraction activities. So that the environmental impact may be reduced, the restocking of fish and increase in fish production are enhanced. Genetic evaluations using molecular markers are essential for this purpose. Current study evaluates the genetic variability of two tambaqui broodstocks used in restocking programs. Sixty-five samples (33 samples from broodstock A and 32 samples from broodstock B) were collected. DNA was extracted from caudal fin samples, with the amplification of four microsatellite loci: Cm1A11 (EU685307) Cm1C8 (EU685308) Cm1F4 (EU685311) and Cm1H8 (EU685315). Fourteen alleles in the stock of broodstock A were produced, five alleles for Cm1A11 locus (230, 255, 260, 270 and 276 bp), three alleles Cm1C8 (239, 260, and 273 bp), two alleles Cm1F4 (211 and 245 bp), four alleles for Cm1H8 (275, 290, 320 and 331 bp) and two unique alleles were found for Cm1A11 loci (alleles 270 and 276 bp) and Cm1H8 (alleles 275 and 331 bp). In broodstock B, ten alleles were produced, the same alleles of the first stock except for alleles 270 and 276 bp in Cm1A11 locus and 275 and 331 bp in Cm1H8 locus. Broodstock A revealed low frequency alleles in Cm1A11 loci, Cm1C8, Cm1F4 and Cm1H8, whereas broodstock B had no locus with low allelic frequency. Loci Cm1A11, Cm1C8 and Cm1H8 exhibited significant deficit of heterozygotes in both broodstocks, revealing changes in Hardy-Weinberg equilibrium. Genetic diversity between stocks was 0.1120, whilst genetic similarity was 0.894, with F ST rate = 0.05, and Nm = 3.93, indicating gene flow between the two broodstocks. Results show that broodstocks are genetically closely related, with no great genetic variability. Strategies such as a previous genetic analysis of breeding with its marking, use of a large Ne crossing between the most genetically divergent specimens, and the introduction of new genetic material to broodstocks may maximize genetic diversity and minimize inbreeding within the next generation.

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“…2011; Giesing et al . 2011) and time of egg collection within the spawning season (Galo et al . 2015) can affect egg quality.…”

Section: Egg Collection and Use Of Thawed Sperm Samplesmentioning

confidence: 99%

Cryopreservation in fish: current status and pathways to quality assurance and quality control in repository development

Torres

Hu²,

Tiersch

2016

Reprod. Fertil. Dev.

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Cryopreservation in aquatic species in general has been constrained to research activities for more than 60 years. Although the need for application and commercialisation pathways has become clear, the lack of comprehensive quality assurance and quality control programs has impeded the progress of the field, delaying the establishment of germplasm repositories and commercial-scale applications. In this review we focus on the opportunities for standardisation in the practices involved in the four main stages of the cryopreservation process: (1) source, housing and conditioning of fish; (2) sample collection and preparation; (3) freezing and cryogenic storage of samples; and (4) egg collection and use of thawed sperm samples. In addition, we introduce some key factors that would assist the transition to commercial-scale, high-throughput application.

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Oocyte quality of tambaqui (Colossoma macropomum) during the reproductive season

Cited by 10 publications

References 27 publications

Colossoma macropomum females can reproduce more than once in the same reproductive period

Colossoma macropomum females can reproduce more than once in the same reproductive period

Genetic diversity of tambaqui broodstocks in stock enhancement programs

Cryopreservation in fish: current status and pathways to quality assurance and quality control in repository development

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