Addenda à « Cours d’Helminthologie I. — Trématodes, Sous-Classe <i>Aspidogastrea</i> »

Robertollfus,

doi:10.1051/parasite/1959345623

Cited by 6 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although the posterior sucker (incipient ventral disc) of the cotylocidium initially resembles the ventral/posterior sucker of digeneans, it subsequently undergoes subdivision into numerous alveoli. Our TEM studies tend to support the early ideas of Burmeister (1856), Monticelli (1892), Furhmann (1928), Faust (1932), Faust and Tang (1936), Chauhan (1954) and Dollfus (1958) for treating the Aspidogastrea as a separate group occupying an intermediate position between the Monogenea and the Digenea (Timofeeva 1975(Timofeeva , 2005Poddubnaya et al 2011Poddubnaya et al , 2012. Rohde (1972) also indicated that the Aspidogastrea seem to combine features of both monogeneans and digeneans.…”

Section: Comments On the Phylogenetic Implications Of The Morphogenetsupporting

confidence: 56%

“…Although some species can complete their life-cycle in one and the same mollusc, most exhibit a simple two-host lifecycle pattern. The vertebrate hosts are freshwater teleosts, and occasionally turtles, in the case of the Aspidogastrida and chondrichthyans in the case of the Stichocotylida (Aubert 1855;Voeltzkow 1888a, b;Monticelli 1892;Williams 1942;Brinkmann 1957;Dollfus 1958;Rohde 1972Rohde , 2001. Rohde (1972Rohde ( , 2001, in his major reviews of the biology and relationships of the Aspidogastrea, has considered that a closer examination of this group may shed more light on its phylogenetic affiliations with other platyhelminth groups.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Advanced stages of embryonic development and cotylocidial morphogenesis in the intrauterine eggs of Aspidogaster limacoides Diesing, 1835 (Aspidogastrea), with comments on their phylogenetic implications

Świderski

Poddubnaya

Gibson

et al. 2012

Acta Parasitologica

View full text Add to dashboard Cite

Ultrastructural aspects of the advanced embryonic development and cotylocidial morphogenesis of the aspidogastrean Aspidogaster limacoides are described. The posterior or distal regions of the uterus are filled with eggs containing larvae at advanced stages of morphogenesis and fully-formed cotylocidia. Various stages and organs of this larva are described in detail, including the aspects of the developing and fully-differentiated cotylocidium, the body wall (tegument and musculature), glandular regions and the protonephridial excretory system. Blastomere multiplication by means of mitotic divisions takes place simultaneously with the degeneration or apoptosis of some micromeres; this frequently observed characteristic is compared and discussed in relation to corresponding reports for other neodermatans. During the advanced stages of the embryonic development of A. limacoides, the vitelline syncytium disappears and the size of the embryo increases rapidly. Evident polarization of the differentiating larva was observed; towards one pole of the egg, cytodifferentiation of the mouth, surrounded by the oral sucker and cephalic glands, takes place, whereas, towards the opposite pole, differentiation of the posterior sucker (incipient ventral disc) occurs. The oral and posterior suckers are formed from numerous embryonic cells which have differentiated into myocytes. The central part of the oral sucker undergoes invagination and forms the future pharynx and intestine. Fully-developed cotylocidia of A. limacoides have a neodermatan type of tegument, flame cells and two types of glandular structures. These results suggest a sister relationship between the Aspidogastrea and the Digenea, although the systematic position of aspidogastreans in relation to other platyhelminth taxa remains somewhat equivocal.

show abstract

Section: Comments On the Phylogenetic Implications Of The Morphogenetsupporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Advanced stages of embryonic development and cotylocidial morphogenesis in the intrauterine eggs of Aspidogaster limacoides Diesing, 1835 (Aspidogastrea), with comments on their phylogenetic implications

Świderski

Poddubnaya

Gibson

et al. 2012

Acta Parasitologica

View full text Add to dashboard Cite

show abstract

“…Characters were coded based on discussions in Gibson (1987 ), Brooks et al . (1989); see also Brooks & McLennan (1993a) and Pearson (1992) and the following primary literature, confirmed by examination of specimens of selected available taxa: Aspidogaster conchicola (Bakker & Davids 1973; Dollfus 1958; Faust 1922; Huehner & Etges 1977; Stafford 1896; Williams 1942); Aspidogaster (Rai 1964; Rawat 1948); Cotylogaster michaelis (Monticelli 1892); Cotylogaster basini (Hendrix & Overstreet 1977); Cotylogasteroides occidentalis (Fredericksen 1980; Nickerson 1902) Cotylogasteroides barrowi (Huehner & Etges 1972); Cotylaspis (Osborn 1904; Rumbold 1928; Cho & Seo 1977); Lissemysia (Agrawal 1978; Sinha 1935; Tandon 1948; Singh & Tewari 1985); Lobatostoma (Caballero y Caballero & Hollis 1965; Zylber & Ostrowski de Nuñez 1999; Oliva & Carvajal 1984; MacCallum & MacCallum 1913); Lobatosoma manteri (Rohde 1973); Lobatosoma hanumanthai (Narasimhulu & Madhavi 1980); Lophotaspis interiora (Hendrix & Short 1972; Ward & Hopkins 1931); Lophotaspis vallei (Stossich 1899; Wharton 1933); Lophotaspis orientalis (Faust & Tang 1936); Multicalyx (Stunkard 1962; Thoney & Burreson 1987, 1988); Multicotyle purvisi (Dawes 1941; Rohde 1972); Rohdella siamensis (Gibson & Chinabut 1984); Rugogaster (Schell 1973; Amato & Pereira 1995); Stichocotyle nephropis (Nickerson 1895); Sychnocotyle kholo (Ferguson et al . 1999).…”

Section: Methodsmentioning

confidence: 76%

“…Lophotaspis vallei and Lophotaspis interiora have a single testis with two vas efferentia, which we have coded as two testes. Dollfus (1958) reported Aspidogaster conchicola as having a second rudimentary testis and therefore we have coded it as having two testes. Genital sac: present, enclosing pars prostatica and prostatic cells (0); absent (1); present, enclosing pars prostatica with prostatic cells both internal and external (2); present inclosing only the pars prostaica with prostatic cells external (3); enclosing prostatic cells but pars prostatica absent (4); pars prostatica and prostatic cells external to genital sac (5). Genital sac inclosing terminal end of uterus: absent (0); present (1). Cirrus: present (0); absent (1). Metraterm: present (0); absent (1). Vitellaria: interrupted posteriorly (0); not interrupted posteriorly (1). Vitellaria: interrupted anteriorly (0); not interrupted anteriorly (1). Vitelline ducts: paired (0); single (asymmetrical) duct (1). Vitellaria: follicular (0); compact (as cord) (1). Common vitelline duct: opening between ovary and Mehlis’ gland (0); opening at Mehlis’ gland (1). Orientation of ovary: oviduct opening posteriorly (0); opening anteriorly (1). Ootype: posterior to ovary (0); anterior to ovary (1). Proximal portion of uterus: passing posteriorly (0); passing anteriorly (1). Laurer's canal: present, proceeding posteriorly, opening externally or not (0); absent (1); present, proceeding anteriorly, opening externally (2). Agarwal (1978) states that a Laurer's canal is present without any further information regarding this structure.…”

Section: Methodsmentioning

confidence: 99%

Phylogenetic systematic assessment of the Aspidobothrea (Platyhelminthes, Neodermata, Trematoda)

Zamparo¹,

Brooks²

2002

Zoologica Scripta

View full text Add to dashboard Cite

Phylogenetic systematic analysis of 20 aspidobothrean taxa using 33 transformation series based in comparative morphology yields three most parsimonious trees with a consistency index of 62%. The trees agree with familial‐level relationships of (Rugogastridae (Stichocotylidae (Multicalycidae + Aspidogastridae))) supported by previous phylogenetic systematic assessments, which were based on only 10 transformation series. The analysis does not support completely the current subfamilial classification of the Aspidogastridae: both the Aspidobothriinae [as (Aspidogaster+Lobatostoma)] and the Cotylaspinae [as Cotylogasteroides+Cotylogaster basiri ((Cotylaspis+Lissemysia) (Rohdella (Lophotaspis (Multicotyle+Sychnocotyle)))))] are supported as monophyletic groups. Recognizing Rohdellinae, however, would make the Cotylaspinae paraphyletic. The trees support a basal trichotomy of Cotylogaster michaelis+ Aspidobothriinae + Cotylaspinae. Within the Aspidogastrinae, Aspidogaster conchicola, type species of the genus, is the sister group of all other species currently placed in the genus +Lobatosoma spp., rendering Aspidogaster paraphyletic.

show abstract

“…Although the organ that character 25 refers to is not a pharynx but an oesophageal bulb (see Pharynx under Cercaria), the question which position of the pharynx is plesiomorphic is still of interest as in some digeneans, such as Heronimus, the pharynx abuts the oral sucker and is separated from the caecal bifurcation by an oesophagus, whereas in others, such as Stephanostomum Looss, 1899, it is at the caecal bifurcation and is separated from the oral sucker by a long prepharynx. As there is no oesophagus in Brooks' outgroups, the Udonellidea and Temnocephalidea, and a short oesophagus in his sister group, the Aspidocotylea (Dollfus, 1958), position of pharynx at the caecal bifurcation is plesiomorphic, reversing the polarity of the above pair. The polarity of this series has been reversed by Brooks et al (1989), who said that presence of body spines is plesiomorphic, with which I agree.…”

Section: Head Collarsmentioning

confidence: 99%

On the position of the digenean family Heronimidae: an inquiry into a cladistic classification of the Digenea

Pearson

1992

Syst Parasitol

View full text Add to dashboard Cite

Brooks, O'Grady & Glen (1985b) placed the seemingly aberrant and highly derived family Heronimidae at the base of their cladogram of the Digenea. In the absence of arguments for the composition and polarity of the putative homologous series on which their cladogram is based, it was found necessary to consider in detail almost all of their character series. In the course of my analysis I (1) argue that the oral sucker is singular to the Digenea, and that the oral sucker is not synapomorphic nor the ventral sucker symplesiomorphic for the Digenea, but that early digeneans lacked both suckers, (2) reiterate that the amphistomate condition is secondary and has arisen more than once, and that the embryology of the excretory system proves it to be secondary in all cases, (3) offer support for Cable's view that the cercarial stylet is not of single origin, and (4) restate the argument that paramphistomes, microscaphidiids, and gyliauchenids have not an oral sucker but a pharynx. Brooks, Bandoni, Macdonald & O'Grady (1989) stated that the bifurcate gut is unambiguously a synapomorph of the Digenea, on the basis of their cladistic demonstration that Rugogaster with a bifurcate gut is a sister group to the rest of the Aspidobothria, which in turn is a sister group to the Digenea. Testing this in a new cladogram of the Aspidobothria constructed from Brooks et al. 's (1989) 15 characters (corrected, especially those of the ventral sucker, for which a new phylogeny is advanced), supplemented by an additional 23 characters, reveals Rugogaster as the derived form it appeared to be and aspidogastrids, with a single caecum, as sister group to the rest of the Aspidobothria.A new analysis of the characters produced an increase in homoplasy from 18% to 37%, showed 97 out of 212 characters invalid as used, these two resulting in a decrease in resolution from 82% to 32%, and resulted in changes in polarity in 20 of the 65 putative homologous series listed by Brooks et al. (1985b).The Heronimidae cannot be at the base of their cladogram as it has not three but 13 apomorphs, which is more than have the next three groups, the paramphistomiforms, echinostomatiforms and haploporiforms.Comparison of the Heronimidae with the Bivesiculidae in the light of 48 defensible plesiomorphs shows that the Bivesiculidae, which have 39 of the 48 characters, are more plesiomorphic than the Heronimidae, which have only 23.In conclusion, what remains of the data-base is insufficient to support their cladogram and classification. Better data from the flukes themselves are necessary for a sound cladistic analysis. 82 J.C. Pearson

show abstract

Addenda à « Cours d’Helminthologie I. — Trématodes, Sous-Classe Aspidogastrea »

Cited by 6 publications

References 0 publications

Advanced stages of embryonic development and cotylocidial morphogenesis in the intrauterine eggs of Aspidogaster limacoides Diesing, 1835 (Aspidogastrea), with comments on their phylogenetic implications

Advanced stages of embryonic development and cotylocidial morphogenesis in the intrauterine eggs of Aspidogaster limacoides Diesing, 1835 (Aspidogastrea), with comments on their phylogenetic implications

Phylogenetic systematic assessment of the Aspidobothrea (Platyhelminthes, Neodermata, Trematoda)

On the position of the digenean family Heronimidae: an inquiry into a cladistic classification of the Digenea

Contact Info

Product

Resources

About