Cryobanking of Fish and Shellfish Egg, Embryos and Larvae: An Overview

Harke, Sanjay; Gopalkrishna,; Panche, Archana N

doi:10.3389/fmars.2020.00251

Cited by 35 publications

(17 citation statements)

References 148 publications

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“…Furthermore, with reference to cryopreserving oocytes from endangered animal species, the oocyte membrane permeability to cryoprotectant agents varies among species, again leading to theoretical models being used to predict likely optimal freezing protocols ( Tharasanit & Thuwanut 2021 ). Oocyte cryopreservation is particularly challenging in fish due to the large cell volume, multiple compartments, the presence of a chorion, the low membrane permeability to cryoprotectants and a high chilling sensitivity ( Asturiano et al 2017 , Diwan et al 2020 ). Therefore, for those species, alternatives are intensively investigated and germ cell surrogacy via germ cell transplantation looks like one of the most promising methods ( Rivers et al 2020 ).…”

Section: Gamete and Reproductive Tissue Cryopreservationmentioning

confidence: 99%

Resurrecting biodiversity: advanced assisted reproductive technologies and biobanking

Bolton¹,

Mooney²,

Pettit

et al. 2022

Reproduction and Fertility

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Biodiversity: the variety of all living organisms on Earth is essential for human survival. However, anthropogenic activities are causing the sixth mass extinction, threatening even our own species. For many animals, dwindling numbers are becoming fragmented populations with low genetic diversity, threatening long-term species viability. With extinction rates 1,000-10,000 times greater than is natural, ex situ and in situ conservation programmes need additional support to save species. The indefinite storage of cryopreserved (-196oC) viable cells and tissues (cryobanking), followed by assisted or advanced assisted reproductive technology (ART: utilisation of oocytes and spermatozoa to generate offspring; aART: utilisation of somatic cell genetic material to generate offspring), may be the only hope for species long-term survival. As such, cryobanking should be considered a necessity for all future conservation strategies. Following cryopreservation, ART/aART can be used to reinstate lost genetics back into a population, resurrecting biodiversity. However, for this to be successful, species-specific protocol optimisation and increased knowledge of basic biology for many taxa is required. Current ART/aART is primarily focused on mammalian taxa, however, this needs to be extended to all, including to some of the most endangered: amphibians. Gamete, reproductive tissue and somatic cell cryobanking can fill the gap between losing genetic diversity today, and future technological developments. This review explores species prioritisation for cryobanking and the successes and challenges of cryopreservation and multiple ARTs/aARTs. We discuss the value of cryobanking before more species are lost and the potential of advanced reproductive technologies not only to halt, but reverse biodiversity loss.

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Section: Gamete and Reproductive Tissue Cryopreservationmentioning

confidence: 99%

Resurrecting biodiversity: advanced assisted reproductive technologies and biobanking

Bolton¹,

Mooney²,

Pettit

et al. 2022

Reproduction and Fertility

View full text Add to dashboard Cite

show abstract

“…Many of the attempts to cryopreserve fish eggs were failure due to dehydration, relatively large size of eggs, presence of large amount of yolk and different water permeability rate of membranes [159][160][161]. The major hindrances recorded in the cryopreservation of egg and embryos of teleost fishes [162] are the large size of fish egg and embryos which results in low surface/volume ratio and lower membrane permeability to water and cryoprotectant solutions that makes the embryos difficult to cool and warm uniformly without damage and ice formation, low permeability of the membrane due to the presence of chorionic layer, sensitivity of fish egg and embryosto low temperatures and the presence of multi-layered membrane structure which hinders the osmotic properties for each compartment of the egg/embryos which finally affects the transport of the cryoprotectant solutions.…”

Section: Cryopreservation Of Fish Eggs and Embryosmentioning

confidence: 99%

Cryopreservation and Its Application in Aquaculture

C¹,

Siva²,

J³

2022

Veterinary Medicine and Science

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Aquaculture is the major aquatic animal production segment. Problems like inbreeding depression, genetic drift, introgressive hybridization, etc. have been influencing the production of quality seeds negatively. Cryopreservation serves as a way-out for these problems and a possible answer to produce quality seeds and genetically improved varieties. It has been considered as a major strategy for conservation of fish genetic resources. Cryopreservation of fish gametes has been in vogue since 1953 and the technology is well studied and validated for many species. So far the milt of 200 fish species has been cryopreserved successfully. In this chapter, the importance of aquaculture in overcoming malnutrition, genetic issues affecting quality seed production, cryopreservation protocol employed for various fish species, problems faced in cryopreserving fish eggs and embryos and future of cryopreservation in aquaculture have been discussed.

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“…As such, desirable traits being targeted by precision breeding can be more efficiently transferred between conspecifics without the constraints of genetic dilution that occur when employing conventional breeding approaches [ 163 ]. Ongoing breakthroughs on the cryopreservation of Atlantic salmon gametes [ 165 ] can safeguard the long-term storage of valuable genetic resources, an urgent need transversal to the whole production of aquatic animals [ 166 ]. If the genetic diversity of the southernmost populations of Atlantic salmon is not lost and is rapidly unraveled, it may contribute to paving the way towards the development of a “warm water tolerant” strain through precision breeding.…”

Section: The Way Forwardmentioning

confidence: 99%

Summer Is Coming! Tackling Ocean Warming in Atlantic Salmon Cage Farming

Calado

Mota

Madeira

et al. 2021

Animals

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Atlantic salmon (Salmo salar) cage farming has traditionally been located at higher latitudes where cold seawater temperatures favor this practice. However, these regions can be impacted by ocean warming and heat waves that push seawater temperature beyond the thermo-tolerance limits of this species. As more mass mortality events are reported every year due to abnormal sea temperatures, the Atlantic salmon cage aquaculture industry acknowledges the need to adapt to a changing ocean. This paper reviews adult Atlantic salmon thermal tolerance limits, as well as the deleterious eco-physiological consequences of heat stress, with emphasis on how it negatively affects sea cage aquaculture production cycles. Biotechnological solutions targeting the phenotypic plasticity of Atlantic salmon and its genetic diversity, particularly that of its southernmost populations at the limit of its natural zoogeographic distribution, are discussed. Some of these solutions include selective breeding programs, which may play a key role in this quest for a more thermo-tolerant strain of Atlantic salmon that may help the cage aquaculture industry to adapt to climate uncertainties more rapidly, without compromising profitability. Omics technologies and precision breeding, along with cryopreservation breakthroughs, are also part of the available toolbox that includes other solutions that can allow cage farmers to continue to produce Atlantic salmon in the warmer waters of the oceans of tomorrow.

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Cryobanking of Fish and Shellfish Egg, Embryos and Larvae: An Overview

Cited by 35 publications

References 148 publications

Resurrecting biodiversity: advanced assisted reproductive technologies and biobanking

Resurrecting biodiversity: advanced assisted reproductive technologies and biobanking

Cryopreservation and Its Application in Aquaculture

Summer Is Coming! Tackling Ocean Warming in Atlantic Salmon Cage Farming

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