The caryotype of some teleostea fish obtained by tissue culture in vitro

Chiarelli, B.; O, Ferrantelli; Cucchi, C.

doi:10.1007/bf01899963

Cited by 35 publications

(16 citation statements)

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“…We studied the metacentric chromosomes with par ticular care since some authors have claimed that the largest and smallest of them constitute a heteromorphic pair in the female (Chiarelli et al, 1969;Ohno el al. 1973: Passakas, 1976.…”

Section: Resultsmentioning

confidence: 99%

Cytogenetics of Atlantic eels: C- and G-banding, nucleolus organizer regions, and DNA content

Sola

Camerini

Cataudella

1984

Cytogenet Genome Res

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Section: Resultsmentioning

confidence: 99%

Cytogenetics of Atlantic eels: C- and G-banding, nucleolus organizer regions, and DNA content

Sola

Camerini

Cataudella

1984

Cytogenet Genome Res

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“…Its Wide dispersion has facilitated a great number of cytotaxonomic studies (Makino, 1938Lieder, 1954;Nogusa, 1960;Post, 1965;Chiarelli et al, 1969;Denton & Howell, 1969, Lieppman & Hubbs, 1969Fontana et al, 1970;Kang & Park, 1973). However, considering the fact that only approximately 90 species of this family are known from the karyological point of view, there is still much to be studied in order to reach an exact cytotaxonomic description of the group.…”

Section: Introductionmentioning

confidence: 99%

The chromosomes of 11 species of cyprinidae and one cobitidae from Italy, with some remarks on the problem of polyploidy in the cypriniformes

Cataudella¹,

Sola²,

Muratori

et al. 1977

Genetica

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The present paper gives a detailed description of the morphology of the karyotype of 11 Cyprinidae and 1 Cobitidae indigenous to Italian inland waters. The data relating to Chondrostoma toxostoma, C soetta, Phoxinus phoxinus, Rutilus rubilio, Barbus meridionalis and Cobitis taenia are new from a karyological point of view; as regards Leuciscus cephalus, L. souffia, Alburnus alburnus, Scardinius erythrophtalmus, Tinca tinca and Barbus barbus the already known diploid numbers are confirmed and the morphology of the karyotypes is specified. The data on the morphology of the karyotype are used in discussing the problem of polyploidization of the chromosomal complement in both the Cyprinidae and the whole order Cypriniformes.

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“…Eight studies on the chromosomes of the European eel (Anguilla anguilla) have been published (Chiarclli et aL 1969;Passakas and Klekowski. 1972;Legendre, 1975;Passakas, 1976Passakas, , 1978Passakas, , 1981Sola et al, 1980;Park and Grimm.…”

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confidence: 99%

Sex determination in the European eel (<i>Anguilla anguilla, </i>L.)

Wiberg¹

1983

Cytogenet Genome Res

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Metaphase chromosomes from cultured blood cells of female, male, and hermaphroditic European eels were analyzed. In addition, both gonads from each of the specimens were examined microscopically to ensure correct sexing. The karyological investigation revealed that in some of the specimens a heteromorphic chromosome pair was present. This heteromorphism appeared in both sexes and in the hermaphrodite. C-banding and silver nitrate staining demonstrated that the heteromorphism was due to quantitative differences in constitutive heterochromatin and nucleolar organizing regions in the short arm of chromosome 8. In G-banded preparations it was demonstrated that, except for the heteromorphism mentioned, the karyotypes from both sexes and the hermaphrodite were identical. With the G-band technique it was also easily demonstrated that both the largest metacentric (No. 1) and the smallest metacentric (No. 11) had homologs. Therefore, in contrast to some earlier reports which claimed that these two chromosomes were a heteromorphic pair of sex chromosomes, it is concluded that Anguilla anguilla has no heteromorphic sex chromosomes. The implication of these findings are discussed in relation to the many reports of strongly skewed sex ratios found in commercial eel farms. It is tentatively hypothesized that sex determination in A. anguilla may be metagamic and that sex inversion may occur in this species.

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The caryotype of some teleostea fish obtained by tissue culture in vitro

Cited by 35 publications

References 0 publications

Cytogenetics of Atlantic eels: C- and G-banding, nucleolus organizer regions, and DNA content

Cytogenetics of Atlantic eels: C- and G-banding, nucleolus organizer regions, and DNA content

The chromosomes of 11 species of cyprinidae and one cobitidae from Italy, with some remarks on the problem of polyploidy in the cypriniformes

Sex determination in the European eel (<i>Anguilla anguilla, </i>L.)

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