Life history of Acanthocollaritrema umbilicatum Travassos, Freitas and Bührnheim, 1965 (Digenea: Cryptogonimidae)

Simões, Susana Balmant Emerique; Neves, Roberta Ferreira Cura das; Santos, Cláudia Portes

doi:10.1007/s00436-008-1000-x

Cited by 16 publications

(13 citation statements)

References 10 publications

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“…To date, seven trematode species have been recorded (Etchegoin 1997, Etchegoin and Martorelli 1997, Carnevia et al 2004, Simões et al 2008, Alda et al 2010, 2013: four microphallids [Microphallus simillimus (Travassos, 1920); Microphallus szidati Martorelli, 1986; Maritrema bonaerense Etchegoin et Martorelli, 1997; and Maritrema orensense Cremonte et Martorelli, 1998], two heterophyids [Ascocotyle (Phagicola) longa Ransom, 1920 and Pygidiopsis macrostomum Travassos, 1928], and a cryptogonimid (Acanthocollaritrema umbilicatum Travassos, Freitas et Bührnheim, 1965). Eleven other trematodes have been described but not identified to the species level (Etchegoin 1997).…”

Section: Introductionmentioning

confidence: 99%

Larval trematodes infecting the South-American intertidal mud snail Heleobia australis (Rissooidea: Cochliopidae)

Alda

Martorelli

2014

Acta Parasitologica

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Larval trematodes infecting the snail Heleobia australis (Cochliopidae) from the Bahía Blanca estuary, Argentina were surveyed for two years. A total of 7,504 snail specimens was dissected and the larval stages of 15 different trematodes were recovered and examined morphologically. These larvae included four species that had previously been reported from H. australis in Brazil, Uruguay, and Argentina: the heterophyid Ascocotyle (Phagicola) longa and the microphallids, Maritrema bonaerense, Maritrema orensense, and Microphallus simillimus. Three other species, the echinostomatid Stephanoprora uruguayensis, the microphallid Levinseniella cruzi, and the psilostomid Psilochasmus oxyurus are reported here for the first time as parasites of H. australis. Eight other trematodes found in H. australis are described and placed in the appropriate superfamilies, families or genera (Cryptogonimidae, Apocreadiidae, Aporocotylidae, Notocotylidae, Haploporidae, Renicolidae, Himasthla, and Renicola). The prevalence of the trematode taxa infecting H. australis in the Bahía Blanca estuary was low (<3%) with a single exception (M. simillimus; >20%). Microphallidae were the richest and the most prevalent family, probably because of the high abundance of crabs -the second-intermediate hosts of certain microphallid species -and the considerable diversity of gulls. Here we compare the parasite assemblage found in the H. australis from Bahía Blanca estuary with other parasite assemblages infecting Heleobia spp. and other rissooids from the rest of the world.

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Section: Introductionmentioning

confidence: 99%

Larval trematodes infecting the South-American intertidal mud snail Heleobia australis (Rissooidea: Cochliopidae)

Alda

Martorelli

2014

Acta Parasitologica

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“…macrostomum, has already been reported for other trematode species (Lundahl 1941, Greer & Corkum 1979, Cribb 1986, Simões et al 2008). In our experiment, the snails were infected only once with eggs of Pyg.…”

Section: Discussionmentioning

confidence: 61%

“…Therefore, our data strongly suggest that the sporocysts may have the capacity to multiply germinal cells for the permanent production of rediae, and thus cercariae, as long as the snail host lives (Galaktianov & Dobrovolskij 2003). This may also be a more likely explanation for Acanthocollaritrema umbilicatum Travassos (Cryptogonimidae), whose life cycle we have discussed in relation to the possibility that there might be more than two generations of rediae (Simões et al 2008). …”

Section: Discussionmentioning

confidence: 90%

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The life history of Pygidiopsis macrostomum Travassos, 1928 (Digenea: Heterophyidae)

Simões¹,

Barbosa

Santos³

2009

Mem. Inst. Oswaldo Cruz

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Pygidiopsis macrostomum Travassos, 1928, originally described based on a single specimen from Rattus norvegicus (Erxleben) in Brazil, has also been reported from a piscivorous bat, Noctilio leporinus mastivus Ribeiro, in Cuba (Odening 1969, Zdzitowiecki & Rutkowska 1980. We have previously redescribed this species from the holotype and adults obtained from hamsters Mesocricetus auratus Waterhouse experimentally infected with metacercariae from naturally infected guppies Poecilia vivipara Bloch and Schneider taken from Rodrigo de Freitas Lagoon in Rio de Janeiro (RJ), Brazil (Simões et al. 2005). However, other aspects of the life history and biology of this species, especially in relation to the first intermediate host, still need to be elucidated. In this work, the life cycle was completed under laboratory conditions and we provide new host records along with the first descriptions of the redia and cercaria. MATERIALS AND METHODSThe guppies Poe. vivipara, Phalloptychus januarius (Hensel) and Jenynsia multidentata (Jenyns) were collected on the edge of the Rodrigo de Freitas Lagoon, RJ, Brazil (22º57'2"S, 43º11'9"W) and examined for metacercariae. A hydrobiid snail, Heleobia australis (d´Orbigny), was collected in the same lagoon and examined for cercariae. Poe. vivipara and H. australis were reared in the laboratory in filtered lagoon water to provide specimens devoid of infection.Two experimental infections (summer and winter) were performed. For each experiment, one hamster M. auratus was fed with the mesenteries of four naturally infected Poe. vivipara and, on the fourth day postinfection (dpi) each was examined for ovigerous adults of Pyg. macrostomum. Two uninfected stocks of snails (summer and winter) were exposed to infection by placing the eggs of adult Pyg. macrostomum, obtained experimentally from hamsters in their aquaria. Laboratory-reared Poe. vivipara (4 in each experiment for summer and winter) were exposed to cercariae obtained from these experimentally infected H. australis. One hamster for each experiment was fed with the mesenteries of the experimentally infected fish and later examined at four dpi for adults of Pyg. macrostomum.All larval stages and adults were studied live, with or without vital stains. Semi-permanent slides were prepared in glycerine jelly (Moravec 1994) and glycerine/picric acid (Ergens 1969). Other specimens were fixed in 70% alcohol or hot 4% formaldehyde solution, stained with Gomori's trichrome or alcoholic chloridric carmine, cleared in beechwood creosote and mounted in Canada balsam. Illustrations were made with the aid of a drawing attachment on a Leica DM LS2 microscope. Measurements are presented as the range, with the mean in parentheses.For scanning electron microscopy (SEM), specimens were fixed for 1h at rt with 2.5% glutaraldehyde in 0.1 M Na-cacodylate buffer and washed in the same buffer. Specimens were post-fixed for 3 h at rt in a solution of 1% osmium tetroxide in 0.1 M Na-cacodylate buffer, dehydrated in an ascending acetone series, dried by criticalpo...

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“…In the area of Rio de Janeiro, Brazil, the life cycles of digenean species have been elucidated in the ecosystem of the Rodrigo de Freitas lagoon [5-8] and maintained in our laboratory, enabling us to compare the swimming behaviour of an intermediate fish host before and after a digenean infection using an image analysis biomonitoring system [9]. Although the avian and fish fauna of the lagoon are well known, there are few studies on molluscs in this area [6], among which is the ‘red-rim melania’ Melanoides tuberculatus (Müller, 1774) (Thiaridae), an introduced gastropod snail which now has a wide geographical distribution throughout the Neotropics [10]. …”

Section: Resultsmentioning

confidence: 99%

Does the trematode Centrocestus formosanus affect the locomotory activity of the mollusc Melanoides tuberculatus?

2013

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BackgroundMelanoides tuberculatus (Müller, 1774) (Thiaridae), an introduced gastropod mollusc with a wide geographical distribution in the Neotropics, is the intermediate host of the trematode Centrocestus formosanus (Nishigori, 1924) (Heterophyidae). This parasite is considered to be pathogenic to humans. The aim of the present work was to evaluate the locomotory activity of uninfected M. tuberculatus compared with those naturally infected with C. formosanus.FindingsThe locomotory activity of each mollusc was recorded using an image analysis biomonitoring system, Videomex-V ®, to evaluate and quantify the parameters of ‘Stereotypic’ and ‘Resting time’. The Generalized Estimating Equation analysis of locomotory activity of M. tuberculatus infected with C. formosanus revealed significant differences compared with uninfected molluscs for the parameters ‘Stereotypic time’ and ‘Resting time’ with a reduction of movement. The variations in the values of the monitoring intervals recorded showed a significant difference for the infected molluscs in the case of Stereotypic time, with an irregular locomotory activity pattern, as compared to that of uninfected molluscs. The analysis of the standard length of all molluscs did not exhibit any correlation with locomotory activity, showing that C. formosanus is able to alter the locomotory activity of its snail host regardless of the standard length.ConclusionsThe trematode C. formosanus affects the locomotory activity of the mollusc M. tuberculatus by reducing its movement and causing it to exhibit an irregular pattern of activity, both of which are independent of the snail's standard length.

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Life history of Acanthocollaritrema umbilicatum Travassos, Freitas and Bührnheim, 1965 (Digenea: Cryptogonimidae)

Cited by 16 publications

References 10 publications

Larval trematodes infecting the South-American intertidal mud snail Heleobia australis (Rissooidea: Cochliopidae)

Larval trematodes infecting the South-American intertidal mud snail Heleobia australis (Rissooidea: Cochliopidae)

The life history of Pygidiopsis macrostomum Travassos, 1928 (Digenea: Heterophyidae)

Does the trematode Centrocestus formosanus affect the locomotory activity of the mollusc Melanoides tuberculatus?

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