PROGRESS IN PROTOZOOLOGY

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184 PRASINOMONADIDA and VOLVOCIDA. In addition, Prof. Mignot (1981) proposed the division of PRYMNESIIDA into three suborders: PRYMNESININA, PAVLOVANINA, ISOCHRYSININA. The order DI- NOFLAGELLIDA was divided into as many as 15 suborders, which evidently should be discussed in detail before they are accepted; in fact, the author provided no diagnoses for these taxa, referring merely to the authorities of each of them. As far as the class EUGLENOMAS- TIGOPHOREA (or super-order EUGLENOMASTIGOPHORIDEA) is concerned, it was to include a single order EUGLENIDA Biitschli, 1884 and four suborders: EUTREPTIINA Leedale, 1967; EUGLENINA Biitschli, 1884; RHABDOMONADINA Leedale, 1967; and TERONEMATINA Leedale, 1967. It should be noted that Prof. Mignot found unacceptable the separation between EUTREPTIINA from EUGLENAMORPHINA Leedale, 1967 and RHABDOMONADINA from SPHENOMONADINA Leedale, 1967. A summary such as this is not an appropriate place to publish a new classification scheme. Yet to show the differences between the kind of diagnosis proposed in many instances by Prof. Mignot and that employed by the Committee (L e v i n e et al. 1980), I shall cite below the diagnoses of CHRYSOMONADIDA given by him and by the Committee. Committee of the Society of Protozoologists (Levine et al. 1980), CHRYSOMONADIDA Engler, 1898. Two unequal flagella, one directed anteriorly and bearing 2 opposite rows of mastigonemes, other trailing and smooth; chloroplast golden-brown or absent; storage products chrysolaminarin and fat; cell naked, with richly patterned silicified scales, or with lorica; sexual reproduction present. Dinobryon; Ochromonast Synura Mignot 1981 (presentation at the Congress), CHRYSOMONADIDA Engler, 1898 emend. Hibberd, 1976. — Two flagella, one directed anteriorly, bearing 2 opposite rows of tubular complex mastigonemes; zone of transition helicoidal; flagellum short, inflated at its base; cytoskeleton consisting mainly of 2 microtubular cortical systems, 1 formed by microtubules radiating from a fibrillar MTOC, situated at the dorsal edge, and by a rhizoplast associated with the nucleus; yellow-brown chloroplasts contain chlorophylls a and c, (3-carotene, lutein, fucoxanthin, didinoxanthin, violaxanthin; plastid lamellae formed by 3 thylokoids of which the peripheral ones are circular; stigma in plastid or leucoplast; single dictyosome surrounding nucleus; polysaccharide reserve in vacuoles is chrysolaminarin; cells naked or covered with silicified scales of specific complex structure; or in lorica of organic material (cellulose?); formation of scales in intracellular silicalemma originating in Golgi complex associated with endoplasmic reticulum, fre- http://rcin.org.pl
PHYLOGENETIC RELATIONSHIPS AMONG PROTOZOA 185 quently periplastidial; encystment by endogenous formation of silicified cyst wall with specific structure, pore, and aperture; very marked polymorphism with development of microfibrillar part of cytoskeleton into rhizopodial forms. Ochromonas, Dinobryon, Synura It should be added here that in the diagnosis of the class or superorder CHROMOMASTIGOPHOREA (IDEA) Prof. Mignot specified also that the mitochondria have ampouliform (inflated) or tubular cristae. Opinion has been expressed by several members of the Panel that the foregoing, and some of the other diagnoses given by Prof. M i gn o t tend to be too long and detailed. It cannot be denied, however, that they are very complete. There were certain praises as well as criticisms voiced during the session with regard to the Society's scheme of classification (L e v i n e et al. 1980) as well as with regard to that of Prof. Mignot. It was pointed out by Prof. Taylor that the Mignot scheme represents a beginning toward recognition of natural relationships among the flagellates. He considered CHROMOMASTIGOPHOREA as a good, natural grouping. On the other hand, he felt that separation of VOLVO- CIDA from their very close relatives Chlorococcales was unnatural. Prof. Taylor not only further emphasized the need for a closer collaboration between phycologists and protozoologists, but felt that such a collaboration must include also the mycologists. Class 2. ZOOMASTIGOPHOREA Calkins, 1909 As far as the separation of PHYTOMASTIGOPHOREA and ZOO- MASTIGOPHOREA is concerned, several members of the Panel, including Prof. Taylor, felt that it is unnatural and should be eliminated. The proposed elimination of these two classes while undoubtedly sound — it would not separate what appear to be related assemblages at a class level — must be the subject of further discussion. It has been suggested, for example, that a new scheme should involve elevating some groups from the taxonomic levels which they now occupy. Prof. Taylor went so far as to suggest that the dinoflagellates, with a diversity and distinctness resembling that of CILIOPHORA, might actually deserve the rank of a subphylum. A number of questions will have to be answered, as the result of ongoing discussions, before we can make major changes in the admittedly artificial class ZOOMASTI- GOPHOREA. Among these are the following: 1. Are there to be no http://rcin.org.pl
Page 1 and 2: POLISH ACADEMY OF SCIENCES NENCKI I
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Page 21 and 22: 195 The foregoing subdivisions of A
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Page 41 and 42: REFERENCES 215 Bardele C. F. 1977:
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IN VITRO CULTIVATION OF PARASITIC P
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237 Rai Choudhuri A. N.. Chowdhuri
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PROGRESS IN PROTOZOOLOGY Proceeding
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241 Only those with 9-type 1 fronto
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THE MOLECULAR DIVERSITY OF TETRAHYM
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247 in eukaryotes. It is about the
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Table 2 Mating species of Tetrahyme
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Table 8 Percentage of DNA reanneali
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259 pattern; they do confirm our ju
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Table 13 Two-dimensional electropho
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265 Cuny M., Milet M. and Hayes D.
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MEMBRANE FUSIONS IN PROTOZOA 269 It
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Table 1 Characterization of exocyto
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Fig. 3. Freeze fractured trichocyst
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* 1 ^MBBHBBHBBBBI jgf'- Fig. 5. Tan
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273 the preliminary designation "co
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MEMBRANE FUSIONS IN PROTOZOA 275 ba
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277 B i 1 i n s k i M., Plattner H.
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LIST OF SCIENTIFIC REPORTS presente
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281 structure and cytochemistry of
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283 LIST OF SCIENTIFIC REPORTS A. P
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285 LIST OF SCIENTIFIC REPORTS R. G
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287 LIST OF SCIENTIFIC REPORTS K. G
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LIST OF SCIENTIFIC REPORTS 289 R. A
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291 LIST OF SCIENTIFIC REPORTS magn
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293 Co-Chairman: Jan Kućera, Czech
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295 LIST OF SCIENTIFIC REPORTS for
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LONDON 1965 http://rcin.org.pl
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LENINGRAD 1969 http://rcin.org.pl
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CLERMONT-FERRAND 1973 http://rcin.o
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WARSAW 1981 http://rcin.org.pl
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CONTENTS Introductory Remarks 179 B
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