Oogenesis in Macrotrachela quadricornifera (Rotifera, Bdelloidea)

Autor:	Claudia Ricci, Carlo Alberto Redi, Manuela Pagani
Rok vydání:	1993
Předmět:	biology Chromosome Karyotype Parthenogenesis Aquatic Science Oocyte biology.organism_classification Oogenesis Polar body medicine.anatomical_structure Evolutionary biology medicine Bdelloidea Genome size
Zdroj:	Hydrobiologia. :225-230
ISSN:	1573-5117 0018-8158
DOI:	10.1007/bf00025843
Popis:	Bdelloids reproduce via obligate apomictic parthenogenesis. Oogenesis occurs through two subsequent equational divisions, with the extrusion of two polar bodies. Although the morphology of the bdelloid reproductive apparatus has been previously described, the eutely of the germarium has never been investigated. We studied oogenesis in Macrotrachela quadricornifera by assessing: (1) the constancy of oocyte number, (2) chromosome number and size, and (3) the DNA content of oocytes and blastomeres. Oocyte number at birth is constant and determines minimal fertility. We found a chromosome number of S, in which two homologous pairs can be recognized. The genome size of the species is 0.75 picograms
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0554d82d58ae09af45130ab4692402e7 https://doi.org/10.1007/bf00025843 Zobrazit plný text záznamu Full text from SpringerLink