Spermatogenesis in haploid males of the jewel wasp Nasonia vitripennis
| Autor: | Manjinder S. Cheema, Brent E. Gowen, Patrick M. Ferree, Mary R. Van Schaick, Christopher T. Norwood, Juan Ausió, John C. Aldrich, Xueyuan A. Jing |
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| Rok vydání: | 2019 |
| Předmět: |
Male
0301 basic medicine Science media_common.quotation_subject Wasps Haploidy Biology Article Nasonia vitripennis 03 medical and health sciences 0302 clinical medicine Meiosis Developmental biology Homologous chromosome Animals Spermatogenesis Mitosis media_common Multidisciplinary fungi Sperm Chromosomes Insect 030104 developmental biology Evolutionary biology Medicine Ploidy Reproduction 030217 neurology & neurosurgery |
| Zdroj: | Scientific Reports Scientific Reports, Vol 9, Iss 1, Pp 1-13 (2019) |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-019-48332-9 |
| Popis: | Males of hymenopteran insects, which include ants, bees and wasps, develop as haploids from unfertilized eggs. In order to accommodate their lack of homologous chromosome pairs, some hymenopterans such as the honeybee have been shown to produce haploid sperm through an abortive meiosis. We employed microscopic approaches to visualize landmark aspects of spermatogenesis in the jewel wasp Nasonia vitripennis, a model for hymenopteran reproduction and development. Our work demonstrates that N. vitripennis, like other examined hymenopterans, exhibits characteristics indicative of an abortive meiosis, including slight enlargement of spermatocytes preceding meiotic initiation. However, we saw no evidence of cytoplasmic buds containing centrioles that are produced from the first abortive meiotic division, which occurs in the honeybee. In contrast to other previously studied hymenopterans, N. vitripennis males produce sperm in bundles that vary widely from 16 to over 200, thus reflecting a range of cellular divisions. Our results highlight interesting variations in spermatogenesis among the hymenopteran insects, and together with previous studies, they suggest a pattern of progression from meiosis to a more mitotic state in producing sperm. |
| Databáze: | OpenAIRE |
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