2004
DOI: 10.1508/cytologia.69.261
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Cytogenetic Studies on Metaphase Chromosomes of Six Bivalve Species of Families Mytilidae and Veneridae (Nucinelloidea, Mollusca)

Abstract: Chromosomes of 6 bivalve species were studied from mitotic metaphases using cell suspension techniques. Among Family Mytilidae, Modiolus barbatus (Linnaeus 1758) has a diploid chromosome number of 2nϭ32 with 5 metacentric, 2 submetacentric, 5 subtelocentric and 4 telocentric chromosome pairs, Septifer excisus (Wiegmann 1837) has 2nϭ26 with 9 metacentric, 2 submetacentric, and 2 telocentric chromosome pairs and Septifer bilocularis (Linnaeus 1758) also has 2nϭ26 with 8 metacentric, 2 submetacentric and 3 subtel… Show more

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Cited by 6 publications
(6 citation statements)
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“…To date, karyological data are available for only a few species of the family Veneridae [ 10 , 11 , 24 ]. Both the chromosome numbers and the karyotypes determined in this work for Ruditapes philippinarum , R. decussatus , Venerupis corrugata , Venus verrucosa, and Dosinia exoleta are in agreement with previous results [ 12 , 13 , 25 , 26 ] and further confirm that, unlike other families within the order Veneroida in which interspecific differences in chromosome numbers have been detected, all Veneridae species have the same chromosome number, 2 n = 38. Nevertheless, the high variation in karyotype composition detected in these species indicates that speciation in Veneridae was accompanied by some chromosome rearrangements.…”
Section: Discussionsupporting
confidence: 91%
“…To date, karyological data are available for only a few species of the family Veneridae [ 10 , 11 , 24 ]. Both the chromosome numbers and the karyotypes determined in this work for Ruditapes philippinarum , R. decussatus , Venerupis corrugata , Venus verrucosa, and Dosinia exoleta are in agreement with previous results [ 12 , 13 , 25 , 26 ] and further confirm that, unlike other families within the order Veneroida in which interspecific differences in chromosome numbers have been detected, all Veneridae species have the same chromosome number, 2 n = 38. Nevertheless, the high variation in karyotype composition detected in these species indicates that speciation in Veneridae was accompanied by some chromosome rearrangements.…”
Section: Discussionsupporting
confidence: 91%
“…Teredo utriculus (2n = 38) 14 Vitturi et al (1983) Family VENERIDAE Chamelea gallina (2n = 38) 4 Corni and Trentini (1986) Circe scripta (2n = 38) 3 Ebied and Aly (2004) Cyclina sinensis (2n = 36) b 11 Meretrix meretrix (2n = 38) b 3 Wu et al 2002Ruditapes aureus (V. aurea) (2n = 38) 1 Borsa and Thiriot-Quievreux (1990), Carrilho et al (2011) 1…”
Section: Discussionmentioning
confidence: 99%
“…Ruditapes decussatus (2n = 38) 5 Ebied and Aly (2004) Tapes rhomboides (2n = 38) 4 Carrilho et al (2011) 1…”
Section: Discussionmentioning
confidence: 99%
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“…In contrast, the chromosomal characterization of the venerid clams lags far beyond the knowledge achieved for other bivalve families. Classical venerid cytogenetics was limited to determine chromosome numbers and karyotypes in a few species [ 30 – 32 ]. More recently, a restriction endonuclease banding pattern was described in Ruditapes decussatus [ 33 ] and some repetitive DNA sequences were mapped by fluorescent in situ hybridization (FISH).…”
Section: Introductionmentioning
confidence: 99%