6533b86ffe1ef96bd12ce93c
RESEARCH PRODUCT
Spermatocyte Chromosomes in Some Species of the Family Aplysiidae (Gastropoda, Opisthobranchia)
R. VittoriE. CatalanoMaria B. RasottoN. Parrinellosubject
biologyAplysia depilansBotanyGastropodaGeneticsOpisthobranchiaAplysiidaeLimacinaBursatella leachiiPloidyGeneral Agricultural and Biological Sciencesbiology.organism_classificationNotaspideadescription
SUMMARYCounting spermatocyte bivalents, we have determined the haploid number n = 16 for Aplysia depilans and A. punctata, and n = 17 for A. limacina. We have confirmed n = 17 for Bursatella leachii. Male diakinetic bivalents are probably chiasmatic in all the species examined. The orders Nudibranchia and Notaspidea, possessing haploid values of 13 and 12 chromosomes respectively, seem to be more evolved than the other orders of the sub-class Opisthobranchia.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1982-01-01 | Caryologia |