AI Article Synopsis
- The study highlights the importance of having genetically similar laboratory animals, suggesting that breeding full-sib families can help achieve this.
- Researchers bred 34 families of amphioxus larvae but faced high mortality rates, ultimately obtaining only seven juvenile families.
- Survival rates among these families varied significantly, with the best survival at 32.4% and the worst at 1.67%, indicating both the potential for breeding amphioxus strains and the challenges involved.
Article Abstract
One general requirement of individual laboratory animals is that they have known genetic backgrounds. However, ensuring such genetic similarity is difficult, and can be facilitated by breeding a full strain for experimentation. To this end, the authors bred 34 full-sib families of amphioxus larvae/embryos. Due to the high mortality of the embryos and larvae, only seven full-sib families of juvenile amphioxus Branchiostoma japonicum were obtained. Among them, the highest and lowest survival ratios were 32.4% and 1.67%, respectively, whereas the shortest metamorphosis and longest larva duration were 24 d and 42 d, respectively. These results demonstrate the feasibility of establishing full-sib families of amphioxus, and provide fundamental data needed for the future breeding of amphioxus strains.
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