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Aquaculture of the hybrid cultivars of Saccharina japonica: Removing the obstacle of sori production by photoperiodic control
Su, Li1,2,3; Shan, Ti Feng1,2,3; Li, Jing1,2,3; Pang, Shao Jun1,2,3; Leng, Xiao Fei4; Zhang, Yan4; Gao, Hong Tao4
2020-03-30
Source PublicationAQUACULTURE
ISSN0044-8486
Volume519Pages:7
Corresponding AuthorPang, Shao Jun(sjpang@qdio.ac.cn)
AbstractIn aquaculture of the kelp Saccharina japonica, hybrid cultivars could improve both the yield and quality of the farmed products. Hybrid cultivars refer to the diploid macroscopic offspring resulted from crossing a pair of haploid vegetative gametophyte cell lines. When these two cell lines are derived from individuals that are geographically isolated, the adult sporophytic offspring mostly remain immature in their second year of growth from June to September in the sea. The absence of sori in the adult sporophytes of the hybrid during this period prevents them from being used as parental ones for releasing spores to produce "summer seedlings" in hatchery. This is due to the seasonal restriction of hatchery operation which requires the availability of matured sori exclusively in August in the temperate zone in the northern hemisphere. The reasons for appearance of nonsporulating adult individuals has never been investigated although raising adult sporophyte in land-based tank filled with recirculated cold water at 10 degrees C has been a routine operation in hatchery enterprises in the subtropical zone in the south region of China for more than 20 years. While in the north region of China, parental sporophytes have been always raised in the sea until they are used for hatchery. From 2017 to 2019, we have conducted a series of culture experiments, both in beakers with isolated thallus in incubators and in large concrete tanks with intact individuals, trying to understand this phenomenon and look for a solution. The results showed that, (1) the hybrid cultivars demonstrated a feature of photoperiodic short-day plant and that it could form sorus within 25 days when exposed to SD at higher temperature (18 degrees C); (2) the hybrid cultivar maintains unique genetic structures different from the conventional ones as revealed by use of ten polymorphic microsatellite markers; (3) the sensitivity of the hybrids to the shortening of day-length differs in at least 10 days among individuals and could be inherited to its offspring; (4) sori induction in the intact adult sporophytes could be achieved within a month when supplied with SD, applicable to all current cultivars including the hybrids. The discovery and solution presented in this article has opened a gateway to utilization of hybrid cultivars in the giant kelp farming industry in China.
KeywordSaccharina japonica Seaweed cultivation Aquaculture Hybrid Algae
DOI10.1016/j.aquaculture.2019.734917
Indexed BySCI
Language英语
Funding ProjectChina Agriculture Research System[CARS-50] ; National Key Technology Support Program[2015BAD13B05] ; State's Key Project of Research and Development Plan[2016YFC1402507] ; special supporting program for maintaining seaweed stock culture from the Chinese Academy of Science[CZBZX-1] ; STS program from the Chinese Academy of Sciences[KFJ-STS-QYZD-154] ; National Infrastructure of Fishery Germplasm Resource[2019DKA30470] ; Taishan Scholar Program of Shandong Province ; Huiquan Scholar Program of Institute of Oceanology, Chinese Academy of Sciences
WOS Research AreaFisheries ; Marine & Freshwater Biology
WOS SubjectFisheries ; Marine & Freshwater Biology
WOS IDWOS:000511835000078
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/165611
Collection实验海洋生物学重点实验室
Corresponding AuthorPang, Shao Jun
Affiliation1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Expt Marine Biol, 7 Nanhai Rd, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Ctr Ocean Megasci, 7 Nanhai Rd, Qingdao 266071, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, 7 Nanhai Rd, Qingdao 266071, Peoples R China
4.Dalian Haibao Fishery Co Ltd, 1 Bailanzi Tieshan Lvshun, Dalian 116045, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Su, Li,Shan, Ti Feng,Li, Jing,et al. Aquaculture of the hybrid cultivars of Saccharina japonica: Removing the obstacle of sori production by photoperiodic control[J]. AQUACULTURE,2020,519:7.
APA Su, Li.,Shan, Ti Feng.,Li, Jing.,Pang, Shao Jun.,Leng, Xiao Fei.,...&Gao, Hong Tao.(2020).Aquaculture of the hybrid cultivars of Saccharina japonica: Removing the obstacle of sori production by photoperiodic control.AQUACULTURE,519,7.
MLA Su, Li,et al."Aquaculture of the hybrid cultivars of Saccharina japonica: Removing the obstacle of sori production by photoperiodic control".AQUACULTURE 519(2020):7.
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