Shape, size and surface topography of genital organs of Leucochloridium sp. (Digenea), revealed by light and scanning electron microscopy

A revision of the family Leucochloridiidae Poche (Digenea) and studies on the morphology of Leucochloridium paradoxum Carus, 1835

“…The positions of the genital and excretory pores were as described for Leucochloridium sp. (see Bakke, 1976a).…”

“…In addition he placed Urotocus Looss, 1899 within the subfamily. The results of Bakke's (1976aBakke's ( , b, 1978b investigations stressed the need for a revision of Kagan's (1952b) generic diagnoses. It seems apparent that the system of using the adult stage only should be replaced by one primarily stressing the important larval similarities and differences; these characters are tabulated here (Table III).…”

“…The muscular bulbous vesicle present in Urogonimus, which according to Bakke (1977) may represent a modified prostatic organ, may function as an ejaculatory seminal vesicle. There is no specially developed seminal structure in the leucochloridiids, though dilatations of the ejaculatory duct may serve as such (Bakke, 1976a). Accordingly, the following genera whose final hosts are birds, are recognized within the family Leucochloridiidae Poche (superfamily Brachylaimoidea Allison, 1943): Leucochloridium Carus, 1835;Urogonimus Monticelli, 1888; Urotocus Looss, 1899; Michajlovia Pojmanska, 1973 (only adults known ) ( Table III).…”

“…Because of the great variability in the diagnostic characters used for adults (Bakke, Dr. W. Junk b.v. Publishers -The Hague, The Netherlands 1978c), scanning electron microscope (SEM) study was made of the surface topography of adults, experimentally reared from known sporocysts, to determine if this would reveal additional characters for L. paradoxum. These and previous results (Bakke, 1976a(Bakke, , b, 1978b indicate that the classification based on adults and presented by Kagan (1950Kagan ( , 1951Kagan ( , 1952b (which also needs revision), should be replaced by a system based primarily on larval similarities and differences. In the present paper a new classification is proposed based on the author's data and on information on the larvae available in the literature.…”

The reproductive system of Opisthogonimus philodryadum (West, 1896) (Digenea)

“…Mané-Garzon & Gortari, 1965; Travassos et al 1969 ;Gomes 1979), which in other digeneans has proved important for taxo nomical judgements (Bakke, 1976(Bakke, , 1977(Bakke, , 1978 The genitalia play an important role in the classifica tion of digenetic Trematoda (Bakke, 1976(Bakke, , 1977(Bakke, , 1978. It is not strange to find that the scant knowledge of the histologi.…”