作者: F. V. Du Mond , T. C. Hutchinson
DOI: 10.1126/SCIENCE.158.3804.1067
关键词: Spermatogenesis 、 Reproduction 、 Squirrel monkey 、 Biology 、 Secondary sex characteristic 、 Subcutaneous fat 、 Testicular histology 、 Ecology 、 Zoology 、 Period (gene)
摘要: Records of reproduction in a Miami colony squirrel monkeys living seminatural state and the field indicate that male undergoes an annual testis cycle. The spermatogenic phase is associated with seasonal acquisition secondary sexual characteristic which we have termed "fatted" condition. Body weights, measurements subcutaneous fat, testicular histology studied over 12-month period further establish this Climatological analyses suggest cycle precipitation cycles respective environments.