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Heteroplasmy of the length of mitochondrial DNA and variation in the population of Mytilus trossulus (Bivalvia: Mytilidae) from the Polish coast

100%

Pempera M. , Wenne R.

Folia Malacologica

1998

tom 06

nr 1-4

Patterns of gill structure and development as taxononomic characters in bivalve molluscs [Mollusca, Bivalvia>

100%

Korniushin A. V.

Annales Zoologici

1996-1997

tom 46

nr 3-4

Variation of some structural and developmental characteristics of ctenidia was studied in bivalves representing the families Mytilidae, Unionidae, Dreissenidae, Sphaeriidae and Cardiidae. Fingernail and pill clams were investigated most thouroughly. Significant differences in the outer demibranch position were found in Sphaeriidae (in the genus Pisidium) and Cardiidae. In the first family, correlation between the outer demibranch position and the time of its ontogenetic origin is observed. Some taxonomic interpretations of the described differences are discussed. For Unio and Anodonta, the differences in the outer demibranch growth rate are demonstrated.