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Journal ArticleDOI

REVIEW: Current Status of Extenders and Cryoprotectants onFish Spermatozoa Cryopreservation

01 Jan 2005-Biodiversitas-Vol. 6, Iss: 1, pp 66-69
TL;DR: A review of studies on the cryopreservation of mammalian sperm, animal husbandry sperm and human sperm have progressed significantly but studies on fish sperm is still confined to some aquatic.
Abstract: An important component of many studies of cryopreservation of fish spermatozoa is the type of extenders and cryoprotectants. The suitability of extenders and cryoprotectants differs from one fish to another. There are many studies have been done in cryopreservation of fish spermatozoa. However, there are few review have been done. This review reveals some aspects of cryopreservation especially the role of extender and cryoprotectant in fish sperm cryopreservation. Fish produce high viscosity of sperm and in some cases only small volume is produced. Before cryopreserved in liquid nitrogen, sperm have to dilute with extenders and for long-term cryopreservation,cryoprotectants are needed to protect the sperm cell from cold and hot shock treatments and prevent cell dehydration during pre-freezing, freezing and post thawed. The suitability of extenders and cryoprotectants differs from one fish to another. Over the last decade, studies on the cryopreservation of mammalian sperm, animal husbandry sperm and human sperm have progressed significantly but studies on fish sperm is still confined to some aquatic.© 2005 Jurusan Biologi FMIPA UNS SurakartaKey words: fish, sperm, cryopreservation, extenders, cryoprotectants

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Citations
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Journal ArticleDOI
TL;DR: This study was designed to test a vitrification method in Atlantic salmon spermatozoa and determine the capacity of seminal plasma (SP) to protect these cells from cryoinjuries.

75 citations

Journal ArticleDOI
TL;DR: There were significant differences in the plasma membrane integrity, mitochondrial membrane potential, motility, fertilization rate, VCL, VAP and VSL compared with the controls (P < 0·05).
Abstract: The objective of this study was to determine the effect of freezing on the function in Atlantic salmon Salmo salar spermatozoa. The semen was frozen in Cortland's medium + 1.3M dimethyl sulphoxide + 0.3M glucose + 2% bovine serum albumin (final concentration) in a ratio of 1:3 (semen:cryoprotectant) as the treatment (T) and fresh semen as the control (F). Straws of 0·5 ml of sperm suspension were frozen in 4 cm of N2 L. They were thawed in a thermoregulated bath (40° C). After thawing, the percentage of spermatozoa with fragmented DNA [transferase dUTP (deoxyuridine triphosphate) nick-end labelling (TUNEL)], plasma membrane integrity (SYBR-14/PI) and mitochondrial membrane potential (ΔΨMMit, JC-1) were evaluated by flow cytometry and motility was evaluated by optical microscope under stroboscopic light. The fertilization rates of the control and treatment semen were tested at a sperm density of 1·5 × 10(7) spermatozoa oocyte(-1) , by observation of the first cleavages after 16 h incubation at 10° C. In the cryopreserved semen (T), the mean ± s.d. DNA fragmentation was 4·8 ± 2·5%; plasma membrane integrity 75·2 ± 6·3%; mitochondrial membrane potential 51·7 ± 3·6%; motility 58·5 ± 5·3%; curved line velocity (VCL ) 61·2 ± 17·4 µm s(-1) ; average-path velocity (VAP ) 50·1 ± 17·3 µm s(-1) ; straight-line velocity (VSL ) 59·1 ± 18·4 µm s(-1) ; fertilization rate 81·6 ± 1·9%. There were significant differences in the plasma membrane integrity, mitochondrial membrane potential, motility, fertilization rate, VCL , VAP and VSL compared with the controls (P < 0·05). Also the mitochondrial membrane potential correlated with motility, fertilization rate, VCL and VSL (r = 0·75; r = 0·59; r = 0·77 and r = 0·79, respectively; P < 0·05); and the fertilization rate correlated with VCL and VSL (r = 0·59 and r = 0·55, respectively).

57 citations

Journal ArticleDOI
TL;DR: A positive role of glucose in the improvement of sperm cryopreservation in farmed greenlip abalone is demonstrated, showing that the addition of glucose could significantly improve the sperm plasma membrane integrity and mitochondrial membrane potential.

35 citations


Cites background from "REVIEW: Current Status of Extenders..."

  • ...In aquatic species, sperm cryopreservation research has mainly been conducted in fish species [7,47,63]....

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Journal ArticleDOI
TL;DR: The effect of cryoprotectants on the spermatozoa abnormality and motility were significant and there is a negative correlation between sperm motility and abnormality.

30 citations

Journal Article
TL;DR: Coconut water showed the highest fertility and hatching rates at 1:20 dilution ratio and was the optimal condition for African catfish spermatozoa among the natural extenders investigated.
Abstract: The objective of the present study was to determine the most suitable extender and their respective dilution ratios for African catfish sperm for artificial induced breeding and cryopreservation purposes Three natural extenders were tested ie coconut water, sugarcane water and soybean solutions, at three different levels of sperm to extender dilutions of 1:20, 1:30 and 1:40 While Ringer solution was used as a control Diluted sperm were fertilized with ready isolated eggs to assess the fertility and hatching rate at 0, 6 and 12 hour intervals The results showed that the eggs hatched approximately 19 to 27 hours after fertilization In general, the fertilization and hatching rates decreased with increasing dilution ratio With respect to natural extenders, the coconut water showed the highest fertility and hatching rates at 1:20 dilution ratio Therefore, coconut water at 1:20 dilution ratio was the optimal condition for African catfish spermatozoa among the natural extenders investigated

29 citations

References
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Journal ArticleDOI
TL;DR: These concepts of membrane structure and the relationship of membrane composition to water and cryoprotectant movement are reviewed and reintroduced in the context of the established and successful protocol for freezing bull sperm to illustrate the molecular responses that may be necessary to survive a freeze-thaw cycle.
Abstract: Techniques for freezing bull sperm developed over the past 40 years have not yielded protocols for preserving sperm from other species. Recent advances in our understanding of cell membrane structure function and metabolism now permit alternative modes of investigation. These data will allow development of unique studies which should have a higher probability of yielding successful protocols for sperm from other species. In this review the authors will: (1) provide a general overview of cryopreservation; (2) review emerging concepts of membrane structure and the relationship of membrane composition to water and cryoprotectant movement; (3) emphasize how these parameters affect cell volume and surface areas; (4) focus attention on the concept that cryoprotectants will alter membrane structure and function in addition to their well-recognized effects on bulk solvent; and (5) emphasize the effect of the processing protocol on metabolic balance. These concepts are reintroduced in the context of the established and successful protocol for freezing bull sperm to illustrate the molecular responses that may be necessary to survive a freeze-thaw cycle.

735 citations


"REVIEW: Current Status of Extenders..." refers background in this paper

  • ...: +62-0651-555622 e-mail: icin@eudoramail.com 2005 Jurusan Biologi FMIPA UNS Surakarta Key words: fish, sperm, cryopreservation, extenders and cryoprotectants....

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  • ...In addition, Hammerstedt et al. (1990) reported that ice formation and changes in osmotic pressure are other major causes of spermatozoa damage during cryopreservation, and the ability of spermatozoa plasma membrane to resist structural damage during cryopreservation may be related to the type of…...

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Journal ArticleDOI
TL;DR: This paper reviews the recent advances in finfish and shellfish gamete and embryo cryopreservation and suggests ways to overcome the problems posed by finfish ova and embryos using very recent technical innovations.

242 citations


"REVIEW: Current Status of Extenders..." refers background in this paper

  • ...Major cryoinjuries can occur in relation to freezing and thawing process during conventional cryopreservation within the temperature ranges of generalized cryopreservation procedures due to the cold shock during freezing and hot shock when the samples thawed (Chao and Liao, 2001)....

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  • ...Other causes of cryoinjuries include pH fluctuation, ice crystal formation, osmotic pressure and cryoprotectant toxicity (Chao and Liao, 2001)....

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  • ...: +62-0651-555622 e-mail: icin@eudoramail.com 2005 Jurusan Biologi FMIPA UNS Surakarta Key words: fish, sperm, cryopreservation, extenders and cryoprotectants....

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  • ...For example 1 part milt: 1 part extender for the sperm of grey mullet, black porgy, and tilapia; 1:4 for milkfish; and 1:20 for grouper (Chao and Liao, 2001)....

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  • ...According to Chao and Liao (2001), cryopreservation of fish sperm has been well established for many years in many finfish species....

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Journal ArticleDOI
TL;DR: In this study, fish sperm cryopreservation methods were elaborated upon for ex situ conservation of nine strains of Bohemian common carp and showed significant differences between fresh and frozen/thawed sperm regarding fertilization rate and insignificant differences on the hatching rate.

196 citations


"REVIEW: Current Status of Extenders..." refers background in this paper

  • ...It was postulated that fatty acids protect the cell from osmotic pressure of extenders and cryoprotectants solution and hot or cold shock during freezing and thawing further prevent cell dehydration and damages....

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Journal ArticleDOI
TL;DR: This cryopreservation protocol resulted in frozen-thawed semen with 35 to 65% motile and 5 to 25% locally motile spermatozoa depending on the quality of fresh semen.

119 citations


"REVIEW: Current Status of Extenders..." refers background or methods in this paper

  • ...Another extender that can be used is saline solution consisting of 75 mmol/L NaCl, 70 mmol/L KCl, 2 mmol CaCl2, 1 mmol/L MgSO4, and 20 mmol/L tris (pH 8) which is suitable for cyprinid fish spermatozoa (Lahnsteiner et al., 2000)....

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  • ...…major causes of spermatozoa damage during cryopreservation, and the ability of spermatozoa plasma membrane to resist structural damage during cryopreservation may be related to the type of fatty acids in the spermatozoa plasma membrane and the strength of the bonds between membrane components....

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Journal ArticleDOI
TL;DR: In this paper, a method for cryopreserving spermatozoa and optimizing sperm:egg dilution ratio in African catfish Clarias gariepinus was developed.

112 citations