Chapter 4 Fish Sperm Maturation, Capacitation, and Motility Activation

Pérez, Luz

doi:10.1007/978-981-15-2290-1_5

Cited by 5 publications

(3 citation statements)

References 97 publications

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“…In amphibians, the fibrous glycoconjugate network of the oocyte jelly layer containing Sias is involved in capacitation ( Brun, 1974 ). In Fish, sperm capacitation is diverse and mediated either by seminal plasma changes in pH, HCO3, Na + , Ca 2+ , by release in the external medium, or after a contact with the oocyte surrounding Sias ( Pérez, 2020 ).…”

Section: Sperm Preparation Through the Coating/uncoating Changes In Siasmentioning

confidence: 99%

Diversity of sialic acids and sialoglycoproteins in gametes and at fertilization

Fliniaux

Marchand²,

Molinaro³

et al. 2022

Front. Cell Dev. Biol.

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Sialic acids are a family of 9-carbon monosaccharides with particular physicochemical properties. They modulate the biological functions of the molecules that carry them and are involved in several steps of the reproductive process. Sialoglycoproteins participate in the balance between species recognition and specificity, and the mechanisms of these aspects remain an issue in gametes formation and binding in metazoan reproduction. Sialoglycoproteins form a specific coat at the gametes surface and specific polysialylated chains are present on marine species oocytes. Spermatozoa are submitted to critical sialic acid changes in the female reproductive tract facilitating their migration, their survival through the modulation of the female innate immune response, and the final oocyte-binding event. To decipher the role of sialic acids in gametes and at fertilization, the dynamical changes of enzymes involved in their synthesis and removal have to be further considered.

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Section: Sperm Preparation Through the Coating/uncoating Changes In Siasmentioning

confidence: 99%

Diversity of sialic acids and sialoglycoproteins in gametes and at fertilization

Fliniaux

Marchand²,

Molinaro³

et al. 2022

Front. Cell Dev. Biol.

View full text Add to dashboard Cite

show abstract

“…Still, the elements of such a signalling cascade should be further investigated. In some mammals, fertilization synchronization is realized through the capacitation process when only a small part of the sperm population is capacitated and ready to fertilize during the ovulation period, thus prolonging the time window for successful fertilization (Perez-Cerezales et al, 2015), but for fishes, sperm capacitation 136 was described in only a few species (Dzyuba et al, 2019;Pérez, 2020). For many Chondrichthyan species, synchronization may be needed to ensure fertilization immediately after ovulation and before egg encapsulation (Walker, 2020).…”

Section: Spermatozeugmata and Spermatophoresmentioning

confidence: 99%

Development and Application of Techniques for the Control of Captive Breeding in Elasmobranchs

García Salinas

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Appearing 420 million years ago, sharks and rays constitute an ancient and ecologically diverse group of aquatic vertebrates known as elasmobranchs. This diverse group possesses life strategies that make them highly vulnerable to rapid environmental changes, such as those resulting from anthropogenic actions. Despite being key elements in regulating the ecosystems in which they live, they are currently one of the most threatened vertebrate groups on the planet.In parallel with in situ conservation, ex situ conservation programs can be used to improve the situation of some sensitive species. Among these programs, captive breeding plans would increase the sustainability of public aquariums and research centres, as well as allow the development of conservation strategies in the wild. However, to be effective, these plans should include the use of assisted reproductive control techniques. Unfortunately, these techniques have been scarcely developed in the past, so their usefulness has not been adequately proven.

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“…Populations of many marine fish species will be affected, and under suboptimal conditions, they will become extinct (Coley et al 2022). Fish (in seawater spawners) (Pérez 2020) and such an osmotic shock induces the initiation of sperm motility. Sperm motility is a key requirement to assess the quality and fertilizing capacity of the sperm (Billard et al 1995).…”

Section: Introductionmentioning

confidence: 99%

Sperm Quality and Cryopreservation in Teleost: Effect of Seminal Plasma Component and Climate Change

Padilla Sánchez

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The cryopreservation of semen from neotropical fish is an important tool for aquaculture, being necessary to establish cryogenic protocols for most native species. This research aimed to determine the influence of seminal plasma as a constituent of the cryoprotective solution on the cryopreservation sperm and of sperm subpopulation structure of the cryopreserved-thawed Pseudoplatystoma reticulatum semen. As cryoprotective solutions were used: T1 = 5% glucose + 10% methanol; T2 = T1 + 30% of P. reticulatum natural seminal plasma e; T3 = T1 + 30% artificial seminal plasma. The data were analyzed by the sperm analysis program (CASA), and a Principal Component Analysis (PCA) was applied. DNA damage was evaluated using the comet assay. There was a statistically significant difference in the variables of Total Motility (MOT) and Progressive Motility (PM) between T1 and T3, with no significant difference between these and T2. The fertilization test showed statistical differences between T3 and Control (fresh sperm), T2 and T1. In the evaluation of DNA, the three treatments showed significant differences, with T2 being the most effective in protecting against DNA damage. The PCA analysis showed that the FERT and seminal quality variables MOT and MP better represented T1. Three subpopulations were present for the cryopreservedthawed sperm, SP1 (fast-linear), SP2 (fast-non-linear), and SP3 (slow-linear).The simple combination of methanol (10%) and glucose (5%) was the most effective treatment for maintaining fast and linear subpopulations. The treatment supplemented with seminal artificial plasma did not show effective results in the protection of the spermatozoa of the species Therefore, we can 48 suggest T1 whit a high degree of protection in the cryopreservation of P. reticulatum sperm.

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Chapter 4 Fish Sperm Maturation, Capacitation, and Motility Activation

Cited by 5 publications

References 97 publications

Diversity of sialic acids and sialoglycoproteins in gametes and at fertilization

Diversity of sialic acids and sialoglycoproteins in gametes and at fertilization

Development and Application of Techniques for the Control of Captive Breeding in Elasmobranchs

Sperm Quality and Cryopreservation in Teleost: Effect of Seminal Plasma Component and Climate Change

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