当前位置: X-MOL 学术Can. J. Fish. Aquat. Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Differences in growth and condition of juvenile Oncorhynchus mykiss related to sex and a migration-associated genomic region
Canadian Journal of Fisheries and Aquatic Sciences ( IF 2.4 ) Pub Date : 2020-10-29 , DOI: 10.1139/cjfas-2020-0073
David E. Rundio 1, 1 , John Carlos Garza 1, 1 , Steven T. Lindley 1, 1 , Thomas H. Williams 1, 1 , Devon E. Pearse 1, 1
Affiliation  

Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print.
The expression of anadromy in partially migratory salmonid populations is influenced by sex-specific interactions among an individual’s genotype, condition, and environment, but genotype–phenotype relationships prior to the expression of migratory type are poorly understood. We examined whether juvenile growth and condition differed with respect to sex and a migration-associated genomic region (Omy05) in a coastal California population of steelhead and rainbow trout (Oncorhynchus mykiss). Sex and Omy05 genotype had additive effects on annual growth from age 0+ to age 1+ (∼6–18 months old), with higher growth in males and individuals with copies of the rearranged–resident haplotype. Condition at age 1+ increased with the number of copies of the rearranged–resident haplotype, with similar support for additive or interactive effects with sex; additive effects suggested that genotype differences occurred in both sexes and also that condition was slightly higher in males, while interactive effects suggested that the genotype differences occurred only in males. Our results indicate that phenotypic differences related to sex and Omy05 genotype occur well in advance of anadromous migration or freshwater maturation in this southern O. mykiss population.


中文翻译:

与性别和与迁移相关的基因组区域有关的幼年Oncorhynchus mykiss生长和状况的差异

《加拿大渔业和水生科学杂志》,印刷前。
在部分迁徙鲑鱼种群中,性腺功能异常的表达受个体基因型,状况和环境之间性别特异性相互作用的影响,但人们对迁徙类型表达之前的基因型与表型关系了解甚少。我们检查了加利福尼亚沿海的硬头鳟和虹鳟鱼(Oncorhynchus mykiss)的性别和与迁移相关的基因组区域(Omy05)的幼年生长和状况是否存在差异。性别和Omy05基因型对0岁以上至1岁以上(约6-18个月大)的年生长具有累加效应,男性和具有重排居住单倍型的个体的生长速度更高。1岁以上的病情随着重排的居民单倍体的拷贝数的增加而增加,对性别的加性或互动作用也有类似的支持;加性效应表明,男女性别均存在基因型差异,男性的病情略高,而交互效应则表明男性仅存在基因型差异。我们的研究结果表明,在南部南方人群中,与性和Omy05基因型有关的表型差异很早发生在异常迁移或淡水成熟之前。
更新日期:2020-10-29
down
wechat
bug