Induced polyploidy in plaice (Pleuronectes platessa) and its hybrid with the flounder (Platichthys flesus)

Purdom, C. E.

doi:10.1038/hdy.1972.61

Cited by 121 publications

(61 citation statements)

References 9 publications

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“…This information was obtained mainly from sex ratios in progenies of meiogynogenetics and triploids, and both XX/XY and ZZ/ZW mechanisms have been reported (Purdom 1972;Tabata 1991;Howell et al 1995;Tvedt et al 2006;Chen et al 2009). Environmental factors, such as temperature, do (Tabata 1995;Goto et al 1999;Luckenbach et al 2005) or do not affect (Hughes et al 2008) gonad differentiation in flatfish, but this appears not to be a primary factor in sex determination in this group (OspinaAlvarez and Piferrer 2008).…”

Section: Discussionmentioning

confidence: 99%

Identification of the Major Sex-Determining Region of Turbot (Scophthalmus maximus)

et al. 2009

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Sex determination in fish is a labile character in evolutionary terms. The sex-determining (SD) master gene can differ even between closely related fish species. This group is an interesting model for studying the evolution of the SD region and the gonadal differentiation pathway. The turbot (Scophthalmus maximus) is a flatfish of great commercial value, where a strong sexual dimorphism exists for growth rate. Following a QTL and marker association approach in five families and a natural population, we identified the main SD region of turbot at the proximal end of linkage group (LG) 5, close to the SmaUSC-E30 marker. The refined map of this region suggested that this marker would be 2.6 cM and 1.4 Mb from the putative SD gene. This region appeared mostly undifferentiated between males and females, and no relevant recombination frequency differences were detected between sexes. Comparative genomics of LG5 marker sequences against five model species showed no similarity of this chromosome to the sex chromosomes of medaka, stickleback, and fugu, but suggested a similarity to a sex-associated QTL from Oreochromis spp. The segregation analysis of the closest markers to the SD region demonstrated a ZW/ZZ model of sex determination in turbot. A small proportion of families did not fit perfectly with this model, which suggests that other minor genetic and/or environmental factors are involved in sex determination in this species.

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Section: Discussionmentioning

confidence: 99%

Identification of the Major Sex-Determining Region of Turbot (Scophthalmus maximus)

et al. 2009

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“…In addition, a project involving linkage mapping in Japanese flounder is in progress (Coinbra et al, 2003). (Purdom, 1972). Therefore, all the tools have already been prepared for surrogate production in flatfishes.…”

Section: Application Of Surrogate Propagation To Flatfish Aquaculturementioning

confidence: 99%

Developmental biotechnology for aquaculture, with special reference to surrogate production in teleost fishes

Yamaha

Saito

Goto-Kazeto

et al. 2007

Journal of Sea Research

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The purpose of this review is to introduce surrogate production as a new technique for fish-seed production in aquaculture. Surrogate production in fish is a technique used to obtain the gametes of a certain genotype through the gonad of another genotype. It is achieved by inducing germ-line chimerism between different species during early development. Primordial germ cells (PGCs) are a key material of this technique to induce germ-line chimera. In several species, it has been reported that PGCs differentiated from the blastomeres inherited some maternally supplied mRNA located at the terminal regions of the early cleavage furrows. PGCs from donor species (or strains) are isolated and transplanted into host species to induce the germ-line chimera.Four methods for inducing germ-line chimera, namely, blastomere transplantation, blastoderm-graft transplantation, transplantation of PGC from the genital ridge and transplantation visualized PGC with GFP fluorescence, are described. Several problems preventing the successful induction of germ-line chimera in various fish species are mentioned. Surrogate production, however, has the possibility to allow efficient fish-seed production and effective breeding and transfer of biodiversity to an aquaculture strain.Conservation and efficient utilization of genetic resources will be achieved through surrogate production combined with the cryopreservation of PGCs.

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“…5 for example in which 148-154 elements, very close to a triploid set, were counted. Purdom (1973) reported the production of triploids at 10% in sample from a carp the plaice and plaice-flounder hybrids by cold shock of the fertilized eggs. The viability of those triploid embryos, larvae and juveniles appeared normal.…”

mentioning

confidence: 99%

Triploidy induced by cold shock in fertilized eggs of the carp. A preliminary study.

Ojima

Makino²

1978

Proceedings of the Japan Academy. Ser. B: Physical and Biologic

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Induced polyploidy in plaice (Pleuronectes platessa) and its hybrid with the flounder (Platichthys flesus)

Cited by 121 publications

References 9 publications

Identification of the Major Sex-Determining Region of Turbot (Scophthalmus maximus)

Identification of the Major Sex-Determining Region of Turbot (Scophthalmus maximus)

Developmental biotechnology for aquaculture, with special reference to surrogate production in teleost fishes

Triploidy induced by cold shock in fertilized eggs of the carp. A preliminary study.

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