家蚕（鳞翅目：蚕蛾科）的二化性茧色限性品种在补充亚精胺后表现出更高的经济性能和繁殖力。

Bivoltine cocoon color sex-limited breeds of Bombyx mori (Lepidoptera: Bombycidae) show enhanced economic performance and fecundity following spermidine supplementation.

作者信息

Kasa Madhavi, Jolapuram Seetharamulu, Lima Anugata, Didugu Brinda Goda Lakshmi, Poosapati Jagannatha Raju, Mamillapalli Anitha

机构信息

Bivoltine Silkworm Breeding Laboratory, Andhra Pradesh State Sericulture Research and Development Institute, Kirikera-515 211, Hindupur, AP, India.

Department of Biotechnology, School of Science, GITAM (Deemed to be University), Visakhapatnam 530 045, AP, India.

出版信息

J Econ Entomol. 2023 Oct 10;116(5):1679-1688. doi: 10.1093/jee/toad126.

DOI:10.1093/jee/toad126

PMID:37467486

Abstract

Sericulture has immense economic significance. Separating male and female silkworm pupae for egg production in grainage is a laborious task; hence, sex-limited breeds for cocoon color are advantageous for this process. The major constraint in sex-limited breeds is their low fecundity. Sex-limited female moths lay a lower number of eggs than nonsex-limited breeds. Polyamine, spermidine was shown to improve fecundity in several organisms, including the silkworm, Bombyx mori L. In the present study, cocoon color sex-limited breeds, HTO2SL, APS27SL, and SLFC27, were selected and fed with spermidine to improve fecundity and nutritional efficiency. The fifth-instar silkworm larvae of the selected breeds were subjected to standard rearing conditions with and without spermidine supplementation up to spinning. The spermidine-supplemented sex-limited breeds exhibited a significant increase in fecundity, nutritional indices, and economic parameters compared with the control sex-limited breeds. Among the 3 sex-limited breeds tested, the performance of APS27SL improved significantly.

摘要

养蚕业具有巨大的经济意义。在蚕种场中，将雄蚕蛹和雌蚕蛹分开用于产卵是一项艰巨的任务；因此，茧色限性品种在此过程中具有优势。限性品种的主要限制因素是其低繁殖力。限性雌蛾产卵数量比非限性品种少。多胺亚精胺已被证明可提高包括家蚕（Bombyx mori L.）在内的多种生物的繁殖力。在本研究中，选择了茧色限性品种HTO2SL、APS27SL和SLFC27，并用亚精胺喂养以提高繁殖力和营养效率。所选品种的五龄蚕幼虫在标准饲养条件下饲养，直至结茧，一部分添加亚精胺，一部分不添加。与对照限性品种相比，添加亚精胺的限性品种在繁殖力、营养指标和经济参数方面均有显著提高。在所测试的3个限性品种中，APS27SL的表现显著改善。