Temporal aspects of macroscopic changes in rainbow trout (Salmo gairdneri) oocytes before ovulation and of ova fertility during the post-ovulation period; effect of treatment with 17α-hydroxy-20β-dihydroprogesterone

Bry, C.

doi:10.1016/0044-8486(81)90052-1

Cited by 44 publications

(20 citation statements)

References 10 publications

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“…Complete loss of egg viability in kutum (Rutilus frisii kutum) was observed 72-96 hr postovulation at 11 C and 60-72 hr postovulation at 14 C (Samarin et al, 2011a). Successful in vivo egg retention time has been reported to be 5 to 15 days for rainbow trout at 8-17 C (Sakai et al, 1975;Bry, 1981;Springate et al, 1984;Lahnsteiner, 2000;Azuma et al, 2003;Bonnet et al, 2003;Aegerter and Jalabert, 2004;Samarin et al, 2008) and 30-40 days for Caspian brown trout (Salmo trutta caspius) at 7 C (Bahrekazemi et al 2010).…”

Section: Egg Viability Rete Changes Through Oocyte Ageingmentioning

confidence: 95%

Fish Oocyte Ageing and its Effect on Egg Quality

Samarin

Policar

Lahnsteiner

2015

Reviews in Fisheries Science & Aquaculture

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In fish, delayed spawning in nature, delayed egg collection in capture and delayed fertilization after egg stripping can lead to oocyte ageing and over-ripening. Oocyte ageing is reported as one of the most important factors affecting the egg quality. During over-ripening, morphological, physiological, biochemical, histological, cellular, and molecular changes occur inside the eggs and ovarian fluid. These alterations can negatively affect the egg fertilization capacity and successive developmental stages. The time period during which eggs remain viable after ovulation or stripping has been reported from a few minutes to a few weeks depending on the fish species and the storage temperature. Although several biomarkers that characterize the over-ripening phenomenon have been defined, the reliability of these parameters in the field of aquaculture is controversial. For future researches, inhibition of oocyte ageing by antioxidants could be a valuable research topic. In the present article, the morphological, physiological, biochemical, histological, cellular, and molecular changes that occur during oocyte over-ripening under in vivo conditions and during in vitro storage are reviewed and possible reasons for the decrease in viability of eggs are presented. Species-specific changes in the egg viability and larval development are also considered.

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Section: Egg Viability Rete Changes Through Oocyte Ageingmentioning

confidence: 95%

Fish Oocyte Ageing and its Effect on Egg Quality

Samarin

Policar

Lahnsteiner

2015

Reviews in Fisheries Science & Aquaculture

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“…Such an initial increase in the egg viability rates after ovulation has been documented in some studies (Sakai et al, 1975;Bry, 1981;Springate et al, 1984;Mylonas et al, 1992;Linhart andBillard, 1995: Aegerter andSamarin et al 2008;Rasines et al, 2012), while it has not been found in other reports (e.g., Espinach et al, 1984;Lahnsteiner, 2000;Rizzo et al, 2003;Samarin et al, 2011). We found the same trend in common carp (Cyprinus carpio) and pike (Esox lucius) post-ovulatory oocytes as well (unpublished data).…”

Section: Discussionmentioning

confidence: 70%

“…For each measured parameter, means sharing a common alphabetical symbol do not significantly differ. Rizzo et al, 2003Rasines et al, 2012Espinach et al, 1984Formacion et al, 1993Samarin et al, 2011aSakai et al 1975Bry, 1981;Springate et al, 1984;Lahnsteiner, 2000;Azuma et al 2003;Bonnet et al, 2003;Aegerter and Jalabert, 2004;Samarin et al, 2011 Caspian brown trout (Salmo trutta caspius) 30-40 days Bahrekazemi et al, 2010 different fish species (Table 3). Increasing eyed-egg mortality and malformation rates can be interpreted as post-ovulatory oocyte ageing is accompanied by biochemical changes inside the eggs (Craik and Harvey, 1984;Lahnsteiner, 2000) as well as by the leakage of a number of oocyte components, such as protein fragments, into the ovarian fluid (Rime et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

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Samarin¹,

Blecha²,

Bytyutskyy³

et al. 2015

Turk. J. Fish. Aquat. Sci.

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The effect of post-ovulatory oocyte ageing on egg quality was assessed in pikeperch Sander lucioperca to identify the reliable and the best post-ovulatory stripping time. Ovulated eggs were retained in the ovarian cavity for 0-3, 3-9, 6-12 and 12-18 hours post-ovulation (HPO) prior to fertilization. Fertilization, hatching and embryo mortality rates as well as the occurrence of larval malformations and ploidy anomalies were considered as indices for egg quality. The results indicated that the fertilization and hatching rates remained nearly constant, at approximately 80%, for the eggs retained in the ovarian cavity between 0-18 hours after ovulation. Post-ovulatory oocyte ageing did not affect the embryo mortality or the occurrence of larval malformations at least during the 12-hour experimental period. However, the incidence of triploidization in the larvae increased over time from 1.6% at 0-3 HPO to 5% in more aged oocytes at 6-18 HPO. Egg quality retention for at least 12 hours after ovulation appears to be helpful for pikeperch breeding programs by providing synchronous artificial egg insemination and thereby easing hatchery management.

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“…Among steroids, progestogens have been used in laboratory experiments to induce ovulation either in combination with pituitary powder in carp (Jalabert et al 1977) or alone in rainbow trout (Bry 1981), but this approach has not been extended to commercial practice. Only one mammalian hormone, human chorionic gonadotropin (hCG) is used on a commercial scale to induce ovulation, but its efficiency depends on the species.…”

Section: Induction Synchronization and Advancement Of Oocyte Maturatmentioning

confidence: 99%

Endocrinology and fish culture

Billard

1989

Fish Physiol Biochem

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In the current practice of fish culture the use of hormones is mainly limited to the field of reproduction, and more precisely to induce or synchronize ovulation and stimulate spermiation. The practice of pituitary homogenates injection (called hypophysation) which started in the early 1930's has allowed spectacular developments in the culture of some cyprinid species, especially in China, India and Europe. HCG has been used successfully in a limited number of species and LHRH-A, often associated with antidopaminergic compounds, started to be used in some species, especially cyprinids, on a commercial scale. Sex steroids are now commonly used to reverse the sex of some species in salmonids, cyprinids, tilapias. Due to legal restriction and consumer opposition, the tendency is to limit the use of steroids, especially in fish which are later offered to consumption. GH, which significantly stimulates growth and reduces the food conversion rate in laboratory experiments, will possibly be used on a large scale in fish farms. Endocrinology has considerably increased the knowledge of the mechanisms controlling some physiological functions; this has allowed the identification of sensitive phases in fish in captivity, and helps in the management and the process of domestication (most of the cultured fish species have been taken form the wild recently).

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Temporal aspects of macroscopic changes in rainbow trout (Salmo gairdneri) oocytes before ovulation and of ova fertility during the post-ovulation period; effect of treatment with 17α-hydroxy-20β-dihydroprogesterone

Cited by 44 publications

References 10 publications

Fish Oocyte Ageing and its Effect on Egg Quality

Fish Oocyte Ageing and its Effect on Egg Quality

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Endocrinology and fish culture

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