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GENETIC DIVERGENCE IN THE POECILIA SPHENOPS COMPLEX IN MIDDLE AMERICABRETT BLH; TURNER BJ.1983; BIOCHEMICAL SYSTEMATICS AND ECOLOGY; ISSN 0305-1978; GBR; DA. 1983; VOL. 11; NO 2; PP. 127-137; BIBL. 43 REF.Article

EPENDYMAL CELLS OF THE FILUM TERMINALE IN FISH (POECILIA SPHENOPS) ADAPTED TO FRESHWATER AND SATTWATER: ELECTRON MICROSCOPIC STUDYKRIEBEL RM.1981; ANAT. REC.; ISSN 0003-276X; USA; DA. 1981; VOL. 201; NO 1; PP. 189-195; BIBL. 30 REF.Article

A COMPARATIVE STUDY OF THE PRETUMOROUS THYROID GLAND OF THE GYNOGENETIC TELEOST, POECILIA FORMOSA, AND THAT OF OTHER POECILIID FISHES.WOODHEAD AD; SCULLY PM.1977; CANCER RES.; U.S.A.; DA. 1977; VOL. 37; NO 10; PP. 3751-3755; BIBL. 15 REF.Article

An early stage of ZW/ZZ sex chromosome differentiation in Poecilia sphenops var. melanistica (Poeciliidae, Cyprinodontiformes)HAAF, T; SCHMID, M.Chromosoma (Berlin. Print). 1984, Vol 89, Num 1, pp 37-41, issn 0009-5915Article

Primitive sex chromosomes in poeciliid fishes harbor simple repetitive DNA sequencesINDRAJIT NANDA; SCHARTL, M; EPPLEN, J. T et al.The Journal of experimental zoology. 1993, Vol 265, Num 3, pp 301-308, issn 0022-104XArticle