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Montes MM, Arrascaeta FK, Barneche JA, Balcazar D, Reig Cardarella GF, Martorelli SR. Phylogenetic position of the Neotropical Family Zonocotylidae (Paramphistomoidea) using partial 28S rDNA sequences. J Helminthol 2023; 97:e92. [PMID: 38053388 DOI: 10.1017/s0022149x23000779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Six families belonging to the Paramphistomoidea superfamily have been reported in South America, with only Zonocotylidae and Balanorchiidae being endemic. The Zonocotylidae was initially classified as Aspidogastrea and then as a paramphistomoid. This family comprises a single genus, Zononocotyle, with two species. It is primarily characterized by having an attachment organ with transverse ridges and a single testis. The placement of Zonocotylidae within Paramphistomoidea is controversial, as some researchers speculate that this genus is the most primitive member of the superfamily, while others consider it an aberrant form. The main objectives of our study were to provide the first sequences of Zonocotylidae and elucidate its phylogenetic position. We amplified the 28S gene from two parasites from Cyphocharax sp. from Punta Lara, Buenos Aires. Newly generated sequences were used to infer the phylogenetic relationships with other Paramphistomoidea species using a Bayesian approach. Zonocotylidae were clustered with Dadayiinae and Kalitrematinae (Cladorchiidae) species found in freshwater fishes from South America. Genetic analyses revealed that they formed a well-supported clade with cladorchiids in freshwater hosts from South America. However, the occurrence of genera of Cladorchiidae in North America, Middle America, Asia, and Australia suggested its polyphyletic nature and may indicate the need for the erection of new families. Other Paramphistomoidea families may also require further revision. The addition of new sequences to phylogenetic analyses along with a comprehensive and more detailed description of the genera will help resolve the relationships within this group.
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Affiliation(s)
- M M Montes
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT, CONICET-UNLP-CICPBA), La Plata, Buenos Aires, Argentina
| | - F K Arrascaeta
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT, CONICET-UNLP-CICPBA), La Plata, Buenos Aires, Argentina
| | - J A Barneche
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT, CONICET-UNLP-CICPBA), La Plata, Buenos Aires, Argentina
| | - D Balcazar
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT, CONICET-UNLP-CICPBA), La Plata, Buenos Aires, Argentina
| | - G F Reig Cardarella
- Escuela de Tecnología Médica y Centro Integrativo de Biología y Química Aplicada (CIBQA). Universidad Bernardo O' Higgins, Santiago de Chile, Chile
| | - S R Martorelli
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT, CONICET-UNLP-CICPBA), La Plata, Buenos Aires, Argentina
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Montes MM, Barneche J, Legunda N, Ferrari W, Aguilar-Aguilar R, Martorelli SR. Systematic assessment of nymphs of Diesingiinae (Pentastomida: Sebekidae) parasitizing Palloceros harpagos (Cyprinodontiformes: Poeciliidae) from Parque Nacional Iguazú, Argentina: filling gaps in an incomplete phylogenetic framework. AN ACAD BRAS CIENC 2023; 95:e20200668. [PMID: 37991102 DOI: 10.1590/0001-3765202320200668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 09/13/2020] [Indexed: 11/23/2023] Open
Abstract
During a search for parasites in fishes from Iguazu River, Argentina, a nymph of pentastomid was found encysted on mesenteries of Phalloceros harpagos. The 28S rDNA and COI mt-DNA were used to compare with the sequences deposited in the GenBank. Pentastomid nymphs belong to the subfamily Diesingiinae (Sebekidae) for having chloride cell pores distributed in a single row per annulus; also, the hooks and rows of spines of our material differ to other genera. Present specimens are most likely Diesingia sp., having 63-74 annuli, a U shaped oral cadre with fibers closing anteriorly and a peg like extension of the oral cadre. The 28S rDNA analysis places our samples into a sister group of Alofia sp., but the COI mt-DNA situate them on the base of the clade. In conclusion, our pentastomid positively belongs to Diesingia sp., however, indisputable assignation requires a reliable description of the nymph, or the availability of sequences linking nymphs and adults, which even could provide evidence of a new hitherto undescribed genus. Aditionally, the systematic position of Sebekia oxycephala previously described by P. harpagos is discussed on the basis of our results, allowing us to suggest a re-assignation of such specimens to the genus Diesingia.
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Affiliation(s)
- Martín Miguel Montes
- Centro de Estudios Parasitológicos y Vectores (CEPAVE-UNLP-CONICET-), Boulevard 120 s/n e/60 y 64, C.P. 1900, La Plata, Buenos Aires, Argentina
| | - Jorge Barneche
- Centro de Estudios Parasitológicos y Vectores (CEPAVE-UNLP-CONICET-), Boulevard 120 s/n e/60 y 64, C.P. 1900, La Plata, Buenos Aires, Argentina
| | - Nicolas Legunda
- Centro de Estudios Parasitológicos y Vectores (CEPAVE-UNLP-CONICET-), Boulevard 120 s/n e/60 y 64, C.P. 1900, La Plata, Buenos Aires, Argentina
| | - Walter Ferrari
- Centro de Estudios Parasitológicos y Vectores (CEPAVE-UNLP-CONICET-), Boulevard 120 s/n e/60 y 64, C.P. 1900, La Plata, Buenos Aires, Argentina
| | - Rogelio Aguilar-Aguilar
- Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autónoma de México, Circuito Exterior s/n, C.P. 04510, Ciudad Universitaria, Mexico
| | - Sergio Roberto Martorelli
- Centro de Estudios Parasitológicos y Vectores (CEPAVE-UNLP-CONICET-), Boulevard 120 s/n e/60 y 64, C.P. 1900, La Plata, Buenos Aires, Argentina
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Montes MM, García I, Paredes Del Puerto JM, Barneche JA, Ibañez Shimabukuro M, Reig Cardarella GF, Martorelli SR, Pérez Ponce de León G. Integrative analysis of new Clinostomum metacercariae (Digenea, Clinostomidae) using COI mtDNA and morphology rises the number of lineages found in South American freshwater fishes. J Helminthol 2023; 97:e85. [PMID: 37945308 DOI: 10.1017/s0022149x23000706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Clinostomidae is a diverse family of digenean parasitizing fish-eating birds as adults and fishes as metacercariae. The species composition, within the genus Clinostomum has been steadily increasing in recent years. In Argentina, four named species of Clinostomum have been documented, accompanied by four metacercariae representing distinct genetic lineages whose adults have not been identified. This study focused on examining clinostomids in three fish species - Australoheros scitulus (ASI), Cichlasoma dimerus (CDIM), and Pimelodella laticeps (PLA) - at various localities in Argentina. We conducted both morphological and molecular characterizations of the Clinostomum metacercariae collected from these fish species. Molecular phylogenetic analyses using COI mtDNA were performed to determine the placement of these metacercariae within the clinostomid phylogenetic tree. Clinostomum ASC represents a distinct lineage, morphologically distinguishable from other sequenced metacercariae due to its body shape (widest anteriorly and becoming slender towards the posterior end); this lineage was found to be closely related to C. caffarae. While Clinostomum CDIM and Clinostomum PLA exhibited morphological differences, they clustered together genetically with metacercariae reported in previous studies as Clinostomum L3 and Clinostomum CVI. This outcome, coupled with a low genetic distance (0 to 3%), suggests that they are conspecific with metacercariae found in fish across Mexico, Costa Rica, and Argentina. In light of the extensive diversity of fish species in Argentine freshwater ecosystems (over 500 species), and considering the relatively constrained extent of prior investigations, the anticipation of unearthing additional Clinostomum species or lineages is plausible.
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Affiliation(s)
- M M Montes
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT, CONICET-UNLP), La Plata, Buenos Aires, Argentina
| | - I García
- Instituto de Limnología "Dr. Raúl A. Ringuelet", CONICET, La Plata, Argentina
| | | | - J A Barneche
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT, CONICET-UNLP), La Plata, Buenos Aires, Argentina
| | - M Ibañez Shimabukuro
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT, CONICET-UNLP), La Plata, Buenos Aires, Argentina
| | - G F Reig Cardarella
- Escuela de Tecnología Médica y Centro Integrativo de Biología y Química Aplicada (CIBQA). Universidad Bernardo O' Higgins, Santiago de Chile, Chile
| | - S R Martorelli
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT, CONICET-UNLP), La Plata, Buenos Aires, Argentina
| | - G Pérez Ponce de León
- Escuela Nacional de Estudios Superiores Unidad Mérida (ENES-Mérida), Universidad Nacional Autónoma de México, Mérida, Yucatán, Mexico
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Montes MM, Arredondo NJ, Barneche JA, Balcazar D, Reig Cardarella G, Martorelli SR, Pérez-Ponce de León G. Description of Diegoglossidium maradonai n. g. and n. sp. (Digenea: Alloglossidiidae) through an integrative taxonomy approach, with an amended diagnosis of the family. J Helminthol 2022; 96:e82. [PMID: 36321435 DOI: 10.1017/s0022149x22000670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
This paper describes Diegloglossidium maradonai n. g., n. sp. a parasite of the intestine of Hoplosternum littorale (Hancock) from La Plata River basin. The new genus is morphologically similar to members of Alloglossidiidae and Macroderoidiidae although they also share some traits observed in both families. Those families can be differentiated from each other by the combination of morphological features, including the density and distribution of the tegumental spines, the distribution of the vitelline follicles and the extent of the post-testicular space. The molecular analyses based on the large subunit of the ribosomal RNA gene, and the internal transcribed spacer (ITS) regions including ITS1, 5.8S and ITS2 unequivocally place the new genus in the family Alloglossidiidae which is amended based on new observed features. Diegoglossidium n. g. is characterized by a combination of characteristics, being most notably the presence of a deeply lobed ovary. Lastly, the geographical distribution and host associations of the two closely related Neotropical genera of Alloglossidiidae: Magnivitellinum and Diegoglossidium are discussed, and the host and distribution range of Magnivitellinum saltaensis is expanded into Argentina.
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Affiliation(s)
- M M Montes
- Centro de Estudios Parasitológicos y Vectores, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata-Comisión de Investigaciones Científicas, La Plata, Argentina
| | - N J Arredondo
- Laboratorio de Sistemática y Biología de Parásitos de Organismos Acuáticos, Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA, CONICET-UBA), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - J A Barneche
- Centro de Estudios Parasitológicos y Vectores, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata-Comisión de Investigaciones Científicas, La Plata, Argentina
| | - D Balcazar
- Centro de Estudios Parasitológicos y Vectores, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata-Comisión de Investigaciones Científicas, La Plata, Argentina
| | - G Reig Cardarella
- Escuela de Tecnología Médica y Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo O' Higgins, Avenida Viel 1497, CP 8370993, Santiago, Chile
| | - S R Martorelli
- Centro de Estudios Parasitológicos y Vectores, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata-Comisión de Investigaciones Científicas, La Plata, Argentina
| | - G Pérez-Ponce de León
- Instituto de Biología, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Escuela Nacional de Estudios Superiores Unidad Mérida (ENES-Mérida), Universidad Nacional Autónoma de México, Mérida, Yucatán, Mexico
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Montes MM, Arredondo NJ, Marcotegui P, Ferrari W, Solari A, Martorelli SR. New insights on Pomphorhynchus sphaericus Gil de Pertierra, Spatz et Doma, 1996 (Acanthocephala: Pomphorhynchidae). Parasitol Res 2021; 120:3725-3737. [PMID: 34611724 DOI: 10.1007/s00436-021-07331-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 09/24/2021] [Indexed: 11/29/2022]
Abstract
The finding of Pomphorhynchus sphaericus in new localities from La Plata River allowed the reevaluation of the species using a taxonomic integrative approach. The newly found specimens in Pimelodus maculatus from Samborombon Bay differ from P. sphaericus by the roots of hooks 1-6 which not form a wide sheet split into 2 apophysis, the slender, separated and equatorial testicles, the position of the cement glands, the shape of the proboscis, the shape and length of lemnisci, and the eggs size. Despite the notorious observed morphological differences, the COI mtDNA analysis confirmed that Pomphorhynchus individuals are the same conspecific, and showed that there is a high phenotypical plasticity in this species. Pomphorhynchus sphaericus is the first South American species analyzed to a DNA level (COI mtDNA, ITS, and 18S rDNA genes). The molecular analysis relates P. sphaericus to P. bulbocolli and P. purhepechus.
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Affiliation(s)
- Martin Miguel Montes
- Centro de Estudios Parasitológicos Y Vectores (CEPAVE), Consejo Nacional del Investigaciones Científicas Y Técnicas, Universidad Nacional de La Plata (CCT-La Plata-CONICET-UNLP), Calle 2 No. 584, 1900, Buenos Aires, La Plata, Argentina.
| | - Nathalia J Arredondo
- Laboratorio de Sistemática Y Biología de Parásitos de Organismos Acuáticos, Instituto de Biodiversidad Y Biología Experimental Y Aplicada (IBBEA, CONICET-UBA), Facultad de Ciencias Exactas Y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, 4ºpiso, Int. Güiraldes 2160, C1428EGA, Buenos Aires, Argentina
| | - Paula Marcotegui
- Centro de Estudios Parasitológicos Y Vectores (CEPAVE), Consejo Nacional del Investigaciones Científicas Y Técnicas, Universidad Nacional de La Plata (CCT-La Plata-CONICET-UNLP), Calle 2 No. 584, 1900, Buenos Aires, La Plata, Argentina
| | - Walter Ferrari
- Centro de Estudios Parasitológicos Y Vectores (CEPAVE), Consejo Nacional del Investigaciones Científicas Y Técnicas, Universidad Nacional de La Plata (CCT-La Plata-CONICET-UNLP), Calle 2 No. 584, 1900, Buenos Aires, La Plata, Argentina
| | - Agustin Solari
- Instituto de Biología Subtropical (CONICET/UNAM), Puerto Iguazú, Misiones, Argentina
| | - Sergio Roberto Martorelli
- Centro de Estudios Parasitológicos Y Vectores (CEPAVE), Consejo Nacional del Investigaciones Científicas Y Técnicas, Universidad Nacional de La Plata (CCT-La Plata-CONICET-UNLP), Calle 2 No. 584, 1900, Buenos Aires, La Plata, Argentina
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Montes MM, Barneche J, Pagano L, Ferrari W, Martorelli SR, de León GPP. Molecular data reveal hidden diversity of the genus Clinostomum (Digenea, Clinostomidae) in Argentina, with the description of a new species from Ardea cocoi (Ardeidae). Parasitol Res 2021; 120:2779-2791. [PMID: 34232388 DOI: 10.1007/s00436-021-07234-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 06/23/2021] [Indexed: 11/29/2022]
Abstract
The genus Clinostomum has been recently a subject of a large number of molecular phylogenetic studies that have uncovered a larger species diversity than we thought. In Argentina, only two nominal species have been reported, namely C. detruncatum and C. marginatum. Three putative species represented by metacercariae were recently molecularly diagnosed, and there are at least two additional metacercarial morphotypes diagnosed on morphological grounds. Here, we molecularly characterized specimens of Clinostomum sampled from freshwater fishes and fish-eating birds from Argentina through mtDNA cytochrome c oxidase subunit I (COI). Unexpectedly, the phylogenetic analysis uncovered three new additional genetic lineages, two of them corresponding to metacercarial stages and another matching COI sequences of C. heluans Braun, 1899, being considered conspecific, whereas the others still require formal description. Additionally, we add a new host species for a lineage molecularly diagnosed in a previous study. The adult specimens recovered from A. cocoi in Buenos Aires Province represented a new species clearly distinguished from the two species previously reported in Argentina. Clinostomum detruncatum is distinguished from the new species by possessing a characteristic tenoidean uterus, and testes located more posteriorly. Clinostomum marginatum is morphologically similar but differs from the new species in having rounded ovary, posterior testis lobated, and lateral cirrus-sac and displacing the anterior testis, and vitelline follicles not extending beyond the caeca end. Our study raises the number of Clinostomum species in Argentina up to 10. We describe the new species herein.
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Affiliation(s)
- Martin Miguel Montes
- Centro de Estudios Parasitológicos y Vectores, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata-Comision de Investigaciones Científicas, La Plata, Argentina.
| | - Jorge Barneche
- Centro de Estudios Parasitológicos y Vectores, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata-Comision de Investigaciones Científicas, La Plata, Argentina
| | - Luis Pagano
- División Ornitología, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, La Plata, Argentina
| | - Walter Ferrari
- Centro de Estudios Parasitológicos y Vectores, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata-Comision de Investigaciones Científicas, La Plata, Argentina
| | - Sergio Roberto Martorelli
- Centro de Estudios Parasitológicos y Vectores, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata-Comision de Investigaciones Científicas, La Plata, Argentina
| | - Gerardo Pérez-Ponce de León
- Escuela Nacional de Estudios Superiores Unidad Mérida (ENES-Mérida), Universidad Nacional Autónoma de México, Km. 4.5 carretera Mérida-Tétiz, 97357, Ucú Municipality, Yucatán, Mexico
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Montes MM, Castro-Romero R, Martorelli SR. Morphological identification and DNA barcoding of a new species of Parabrachiella (Siphonostomatoida: Lernaeopodidae) with aspects of their intraspecific variation. Acta Trop 2017; 173:34-44. [PMID: 28545896 DOI: 10.1016/j.actatropica.2017.05.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 05/09/2017] [Accepted: 05/20/2017] [Indexed: 11/30/2022]
Abstract
We present a detailed morphological description and a DNA barcoding of Parabrachiella platensis n. sp. collected from Mugil liza Valenciennes in Samborombon Bay (Buenos Aires, Argentina). This new species was compared with two Parabrachiella species parasitic on mugilids: Parabrachiella exilis (Shiino, 1956) and Parabrachiella mugilis (Kabata, Raibaut et Ben Hassine, 1971). Parabrachiella platensis n. sp. differs from those species in the shape of posterior processes, the anal slit with two pairs of bipartite papillae, the size of cephalothorax, the trunk, the maxilla, the microhabitat on the host, and the lack of caudal rami. On the host, the new species was in the nostrils (a new site for a species of the genus Parabrachiella) and in the fins base. Some minor morphological differences were observed in relation to the locations on the host. The molecular analysis conducted based on mtDNA-COI between specimens of the new species on the fins and nostrils showed a genetic similarity of 99.8%. This percentage supports that the specimens found in nostrils and fins base could represent a single species. New studies on P. platensis n. sp., including infection of the same fish with the two forms, could bring some new information. Anyway according to the genetic information provided and the minimal morphological differences spotted we conclude that the two forms are a single specie. The differences observed are possibly influenced by the place of the host where the two forms of copepods were found, nostrils and fins. The new species was also molecularly compared to other five species of Parabrachiella including P. exilis (parasitizing mugilid from Chile), Parabrachiella anisotremis, Parabrachiella auriculata, Parabrachiella merluccii, and P. hugu (the last two sequences were taken from the GenBank). The genetic distance of 9% among P. platensis n. sp. and P. exilis, which is the close morphological related species, allow to states that these two copepods on mugilids belong to different species and then validating the morphological differences found between them.
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Affiliation(s)
- M M Montes
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional del Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT-La Plata CONICET-UNLP), Calle 120 s/n e/60 y 64, 1900, La Plata, Buenos Aires, Argentina.
| | - R Castro-Romero
- Universidad de Antofagasta, Facultad de Ciencias del Mar y recursos naturales, Departamento de Ciencias Acuáticas y Ambientales, Casilla 170, Antofagasta, Chile
| | - S R Martorelli
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional del Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT-La Plata CONICET-UNLP), Calle 120 s/n e/60 y 64, 1900, La Plata, Buenos Aires, Argentina
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Montes MM, Barneche J, García I, Preisz S, Martorelli SR. New data on the acanthocephalan Neoechinorhynchus villoldoi Vizcaíno, 1992 (Neoechinorhynchidae: Acanthocephala), based on specimens found in Austrolebias bellottii (Steindachner, 1881) (Rivulidae: Cyprinodontiformes) from Punta Indio, Argentina. CheckList 2017. [DOI: 10.15560/13.4.53] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Rodríguez-Haro C, Montes MM, Marcotegui P, Martorelli SR. Riggia puyensis n. sp. (Isopoda: Cymothoidae) parasitizing Chaetostoma breve and Chaetostoma microps (Siluriformes: Loricariidae) from Ecuador. Acta Trop 2017; 167:50-58. [PMID: 28012904 DOI: 10.1016/j.actatropica.2016.12.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 12/17/2016] [Indexed: 11/28/2022]
Abstract
A new isopod was found parasitizing Chaetostoma breve and Chaetostoma microps from the Puyo and Bobonaza rivers. The parasite found belongs to the Cymothoidae family and could be located within the genus Riggia instead of Artystone by the presence of abdominal plates fused with the telson. The specimens found represent a new species, Riggia puyensis n. sp., and could be distinguished from Riggia cryptocularis by the presence of developed eyes. The main difference of the new specie from Riggia nana and Riggia brasiliensis is the size, bigger compared with the first and smaller compared with the last species. Riggia acuticaudata have the maxilliped with simple setae, the palp without spination, and maxillule with five spines (two terminal and three subterminal) instead in R. puyensis n. sp. the maxilliped have plumose setae, the palp have spination (with one apical spine, two setae on middle article and one in the basal article) and the maxillule have five spines: two terminal, two subterminal and other spine lower to the others. Riggia paranaensis have similar size, same number of segments in the antena, and similar maxilla to R. puyensis n. sp., but the antennule in the new specie have seven segments instead 6 in R. paranaensis, the antennule and antenna present spines not mentioned in R. paranaensis. Besides, the relative position of the mandible in R. puyensis n. sp. is different compared with R. paranaensis, the maxillule have the same number of spines but with different disposition, and the maxilliped have simple setae in R. paranaensis but those are plumose in the new specie.
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Affiliation(s)
- C Rodríguez-Haro
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT, CONICET-UNLP), Calle 120 s/n e/61 y 62, 1900, Argentina.
| | - M M Montes
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT, CONICET-UNLP), Calle 120 s/n e/61 y 62, 1900, Argentina
| | - P Marcotegui
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT, CONICET-UNLP), Calle 120 s/n e/61 y 62, 1900, Argentina
| | - S R Martorelli
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT, CONICET-UNLP), Calle 120 s/n e/61 y 62, 1900, Argentina
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10
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Montes MM, Plaul SE, Martorelli SR. A new species of philometrid parasite (Nematoda, Philometridae) and histopathological lesions in juvenile whitemouth croakers, Micropogonias furnieri (Desmarest). J Fish Dis 2016; 39:1053-1059. [PMID: 26775636 DOI: 10.1111/jfd.12439] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 10/20/2015] [Accepted: 10/20/2015] [Indexed: 06/05/2023]
Abstract
A new species of nematode parasite, Philometroides tahieli sp. nov. is described. The juvenile whitemouth croaker, Micropogonias furnieri Desmarest, was collected during the spring and summer of the years 2008-2010 from estuarial environments of Argentina. During investigations of the parasite fauna a nematode encapsulated in the musculature of the operculum was found. The nematodes were removed from the host's muscle tissue and slide-mounted in lactophenol solution to clarify the specimens. Opercular muscle with the parasite was processed for histopathological examination. Philometroides tahieli sp. nov. can be identified by the location of gravid females in the host, presence of anterior oesophageal bulb, bosses on the surface of the body, presence of transversal mounds and 14 cephalic papillae in two circular rows. The pathogenicity of the parasite is low in the natural environment, but lesions are consistent with a chronic process. The appearance of caseous necrosis suggests the presence of a locally acting substance. Philometroides tahieli sp. nov. is the second species of this genera described from brackish waters, and since the discovery of Philometroides maplestoni in 1928, is the first species of this genus recorded for South America.
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Affiliation(s)
- M M Montes
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT-La Plata-CONICET-UNLP), La Plata, Buenos Aires, Argentina
| | - S E Plaul
- Laboratorio de Histología y Embriología Descriptiva, Comparada y Experimental, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
| | - S R Martorelli
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT-La Plata-CONICET-UNLP), La Plata, Buenos Aires, Argentina
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11
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Plaul SE, Montes MM, Barbeito CG, Martorelli SR. Morphological aspects and histological effects of the attachment organ of Parabrachiella sp. (Copepoda: Lernaeopodidae) on the grey mullet, Mugil liza Valenciennes. J Fish Dis 2013; 36:853-859. [PMID: 23444867 DOI: 10.1111/jfd.12083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Revised: 12/07/2012] [Accepted: 12/07/2012] [Indexed: 06/01/2023]
Abstract
The genus Parabrachiella Wilson, 1915 (Lernaeopodidae) is represented by copepods that are highly adapted to a parasitic way of life. In Argentina, only P. insidiosa var. lageniformis Heller, 1865, P. chevreuxii Van Beneden, 1891 and P. spinicephala Ringuelet, 1945 have been cited, but none of these have been reported on mugilids. Recently, other species of this genus were found attached to the nasal cavities of juvenile grey mullets, Mugil liza Valenciennes, from Samborombón bay, Buenos Aires province. In this study, the prevalence and mean intensity of the Parabrachiella sp. on grey mullet is investigated. In addition, the damage the parasite imposes on its hosts is examined through evaluation of histological sections and immunostaining for proliferative cell nuclear antigen (PCNA). The morphology of the parasite's bulla is described from light and scanning electron micrographs.
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Affiliation(s)
- S E Plaul
- Facultad de Ciencias Veterinarias, Cátedra de Histología y Embriología, UNLP. La Plata, Bs. As., Argentina
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12
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Martorelli SR, Lino A, Marcotegui P, Montes MM, Alda P, Panei CJ. Morphological and molecular identification of the fish-borne metacercaria of Ascocotyle (Phagicola) longa Ransom, 1920 in Mugil liza from Argentina. Vet Parasitol 2012; 190:599-603. [PMID: 22832071 DOI: 10.1016/j.vetpar.2012.07.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2011] [Revised: 06/29/2012] [Accepted: 07/02/2012] [Indexed: 10/28/2022]
Abstract
This is the first report of Ascocotyle (Phagicola) longa Ransom, 1920 (Digenea: Heterophyidae) in Argentina confirmed by morphological and molecular studies. The metacercaria was found encysted in myotomal musculature, heart and mesentery of the mullet Mugil liza (Pisces: Mugilidae) from Samborombon bay. We provide a morphological description of the metacercaria which we identified using species-specific primers for A. (Phagicola) longa and nucleotid sequence. This worldwide parasite has been reported as one of the causative agents of heterophyiosis, an emerging fish-borne disease of humans, contracted by the consumption of raw mullet. The discovery of A. (Phagicola) longa in Argentina represents a warning of the potentially great impact of this parasite on public health.
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Affiliation(s)
- S R Martorelli
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional del Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT-La Plata-CONICET-UNLP), Calle 2 No. 584, 1900, La Plata, Buenos Aires, Argentina.
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13
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Cremont F, Kroeck MA, Martorelli SR. A new monorchiid cercaria (Digenea) parasitising the purple clam Amiantis purpurata (Bivalvia: Veneridae) in the Southwest Atlantic Ocean, with notes on its gonadal effect. Folia Parasitol (Praha) 2002; 48:217-23. [PMID: 11699657 DOI: 10.14411/fp.2001.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
An unnamed microcercous cercaria (Digenea: Monorchiidae), a parasite of Amiantis purpurata (Lamarck, 1818) (Bivalvia: Veneridae) and its corresponding metacercaria from the province of Buenos Aires and the Patagonian coast of the Southwest Atlantic Ocean, are described. The cercaria described in this paper differs from the three other monorchiid microcercous cercariae, i.e., Lasiotocus minutus (Manter, 1931), Lasiotocus elongatus (Manter, 1931), and Cercaria caribbea XXXVI Cable, 1956, mainly because of the extension of the excretory vesicle and the location of the ventral sucker. Cercariae artificially extracted from sporocysts encyst in a dish and form metacercariae enveloped by a gelatinous sac with two prolongations, which are used to adhere to the substratum. The monorchiid described in this paper has a life cycle similar to those of L. minutus and L. elongatus, although the adult stage of the present species is still unknown. Their larvae are similar in morphology and have venerid clams as their first hosts. The presence of a monorchiid larva is reported for the first time in the Southern Hemisphere. Its monthly prevalence rates, ranging from 0 to 25% (mean: 8.3%), are given from the Patagonian coast. The infection seems to cause castration as it was observed that during March through to May, when most gametes were produced in uninfected individuals, 81% of the infected individuals did not produce gametes.
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Affiliation(s)
- F Cremont
- Centro de Estudios Parasitológicos y de Vectores (CONICET-UNLP), La Plata, Argentina.
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14
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Abstract
The life history of Ascarophis marina in Argentina is proposed on the basis of morphometric features of larval and adult specimens, as well as of trophic relationships among invertebrate and vertebrate hosts in the same geographic area. Adult and larval specimens of A. marina were found in the alimentary tract of the teleost fishes Parona signata (Carangidae) and Urophycis brasiliensis (Gadidae). Third-stage larvae ocurred in the shrimps Peisos petrunkevitchi (Sergestidae) and Artemesia longinaris (Penaeidae).
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Affiliation(s)
- S R Martorelli
- Centro de Estudios Parasitológicos y Vectores (CEPAVE-CONICET) Calle 2 Nro, 584, La Plata, Buenos Aires, Argentina
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15
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Gutiérrez PA, Martorelli SR. Hemibranch preference by freshwater monogeneans a function of gill area, water current, or both? Folia Parasitol (Praha) 2000; 46:263-6. [PMID: 10730198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Differences in the occurrence of monogeneans on lamellae of fish gill arches were observed in this study. These differences were attributed to variations in water current on the gill surfaces or to greater area of certain arches. Two computer simulation programs based on gill area and water current were written to generate parasite metapopulations with clumped patterns. The results obtained were compared with true distributions of selected freshwater monogenean taxa. The combination of both theoretical models (gill area and water current) had greater explanatory power than either of the models alone.
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Affiliation(s)
- P A Gutiérrez
- Departamento de Biología, Universidad CAECE, Buenos Aires, Argentina.
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16
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Gutiérrez PA, Martorelli SR. Niche preferences and spatial distribution of Monogenea on the gills of Pimelodus maculatus in Río de la Plata (Argentina). Parasitology 1999; 119 ( Pt 2):183-8. [PMID: 10466126 DOI: 10.1017/s003118209900459x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Five Monogenea species were found on the gills of the catfish Pimelodus maculatus in Río de la Plata (Argentina). These were used for studying the preference of species on different gill-hemibranches, niche breadth and niche overlap between species. It was found that congeneric species had a generic-specific preference for certain gill-hemibranches. Niche breadth appeared to be related to the number of individuals of each species. Niche overlap between the species is discussed.
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Affiliation(s)
- P A Gutiérrez
- Departamento de Biología, Universidad Caece, Buenos Aires, Argentina.
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17
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Abstract
The Monogenea fauna was studied from the gills of the catfish Pimelodus maculatus. Fish were caught from Río de la Plata, in Buenos Aires harbour (Argentina). Five species of Monogenea were found. The structure of the monogenean community was analysed at the component and infracommunity level. The nature of the monogenean community, its possible interactivity, seasonal variation and predictability are also discussed.
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Affiliation(s)
- P A Gutiérrez
- Departamento de Biología, Universidad Caece, Buenos Aires, Argentina.
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18
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Timi JT, Martorelli SR, Sardella NH. Digenetic trematodes parasitic on Engraulis anchoita (Pisces: Engraulidae) from Argentina and Uruguay. Folia Parasitol (Praha) 1999; 46:132-8. [PMID: 10425743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
A total of 2,086 specimens of Engraulis anchoita Hubbs et Marini (Pisces: Engraulidae), from waters off Argentina and Uruguay were examined for parasitic digeneans. Four species of digeneans were found, Parahemiurus merus (Linton, 1910) (adult) in the stomach; Lecithochirium microstomum Chandler, 1935 (non-ovigerous and ovigerous juveniles) in the swimbladder; Cardiocephaloides sp. (metacercaria) in the eyes and Rhipidocotyle sp. (metacercaria) in the musculature. These four species are recorded for the first time as parasites of E. anchoita.
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Affiliation(s)
- J T Timi
- Departamento de Biología, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Argentina.
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19
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Martorelli SR, Cremonte F. A proposed three-host life history of Monascusfiliformis (Rudolphi, 1819) (Digenea: Fellodi-stomidae) in the southwest Atlantic Ocean. CAN J ZOOL 1998. [DOI: 10.1139/z98-039] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This is the first record of cercariae of Monascus filiformis (Rudolphi, 1819) and of Chaetognatha as a secondintermediate host in the southwest Atlantic Ocean. The morphology of the sporocyst and cercaria from Nucula obliqua (Bivalvia:Nuculidae) and a full description of the metacercaria from hydromedusae are given. The life cycle of M. filiformis involves threehosts. The bivalve N. obliqua is the first intermediate host, Chaetognatha and medusae are the second intermediate hosts, and thejurel Trachurus lathami (Pisces: Carangidae) is the final host. The life cycle of M. filiformis occurs in shallow waters in theArgentine Sea and differs from Køies experimental scheme for the North Sea in the addition of planktonic invertebrates assecond intermediate hosts. The life cycle proposed here follows the general pattern given for the family Fellodistomidae.
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Sardella NH, Martorelli SR. Occurrence of Merogony of Aggregata Frenzel 1885 (Apicomplexa) in Pleoticus muelleri and Artemesia longinaris (Crustacea: Natantia) from Patagonian Waters (Argentina). J Invertebr Pathol 1997; 70:198-202. [PMID: 9367726 DOI: 10.1006/jipa.1997.4689] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The aim of this paper is to describe the merogonic phases of the coccidian Aggregata sp. in the natantians Pleoticus muelleri and Artemesia longinaris from Argentina. Ninety-seven specimens of P. muelleri (from San Jorge Gulf) and 49 of A. longinaris (from Rawson) were examined for intestinal parasites. Intestines were processed under standard histological conditions. The distribution of the octopuses (where gamogony and sporogony of Aggregata spp. take place) in the area considered and the importance of finding these protistans in crustaceans other than brachyurans are also explored. High prevalence values for both hosts indicate that shrimps are the primary hosts for these parasites in Argentinean waters. Copyright 1997 Academic Press. Copyright 1997 Academic Press
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Affiliation(s)
- NH Sardella
- Departamento de Biologia, F.C.E. y N., Funes 3350, Mar del Plata, 7600, Argentina
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21
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Ivanov VA, Navone GT, Martorelli SR. Ascarophis marina n. comb. (Nematoda: cystidicolidae) from the fishes Parona signata (Carangidae) and Urophycis brasiliensis (Gadidae) in the southwestern Atlantic. J Parasitol 1997; 83:917-21. [PMID: 9379299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The taxonomic position of Cystidicola marina Szidat, 1961 is revised, based on the re-examination of type and new specimens collected from the type host, Urophycis brasiliensis (Gadidae), and a new host, Parona signata (Carangidae), in the southwestern Atlantic. The species is redescribed and transferred to Ascarophis as A. marina n. comb. It is distinguished from other species of Ascarophis by the following combination of characters: body length (male: 10.2-22.5 mm, female: 32.8-44.2 mm), number of egg filaments (2 on each pole), egg size (0.030-0.039 mm x 0.015-0.021 mm), and left spicule length (0.4-0.6 mm).
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Affiliation(s)
- V A Ivanov
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET), La Plata, Buenos Aires, Argentina
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22
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Etchegoin JA, Martorelli SR. Description of a new species of Maritrema (Digenea:Microphallidae) from Mar Chiquita coastal lagoon (Buenos Aires, Argentina) with notes on its life cycle. J Parasitol 1997; 83:709-13. [PMID: 9267416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Adults of Maritrema bonaerensis n. sp. (Digenea:Microphallidae) were collected from the intestine of the gulls Larus maculipennis and Larus atlanticus from Mar Chiquita coastal lagoon, Buenos Aires province, Argentina. The new species differs from M. pulcherrima Travassos, 1928 in having smaller sucker ratio, longer intestinal ceca, ovary not lobed, and larger eggs, and from Maritrema prosthometra Deblock and Heard, 1969 it differs in having larger suckers, smaller vitelline follicles, and in the absence of pars prostatica. It differs from Maritrema acadiae (Swales, 1933) in having larger body and pharynx and longer cirrus. It differs from Maritrema paracadiae Ching, 1974 in the larger pharynx, longer cirrus, and in the absence of prominent prostatic cells. From Maritrema majestova Ke, 1976, it differs in having a larger body, smaller eggs, and a long and protusible cirrus. Finally, M. bonaerensis differs from Maritrema chiricae Deblock, 1975 in the larger body, longer cirrus, and in the morphology of the seminal vesicle. Sporocysts and metacercarial stages isolated from the snail Heleobia australis australis and from the crabs Cyrtograpsus angulatus and Chasmagnatus granulata, respectively, suggest that those invertebrates could act as intermediate host in the life cycle of the new species in the lagoon. This assumption is supported by evidence derived from natural and experimental infections, from studies on biology of the actual and presumed hosts, as well as from previous reports on life cycles of species of Maritrema with similar transmission patterns.
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Affiliation(s)
- J A Etchegoin
- Laboratorio de Parasitología, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Argentina
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Martorelli SR. First record of encysted metacercariae in hydrozoan jellyfishes and ctenophores of the southern Atlantic. J Parasitol 1996; 82:352-3. [PMID: 8604116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Three species of pelagic coelenterates and ctenophores captured in Mar del Plata port, Buenos Aires, Argentina, were examined for digenean parasites. Encysted metacercariae were observed and collected. Cysts were found in the mesoglea of the hydromedusae Phialidium sp. and Liriope tetraphylla, and in the ectenophore Mnemiopsis macradyi. The morphology of the worms resembles that of the lepocreadiid digeneans. This is the first record for a metacercaria encysted in hydromedusae or ctenophores.
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Affiliation(s)
- S R Martorelli
- Centro de Estudios Parasitologicos y Vectores (CEPAVE), La Plata, Argentina
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Martorelli SR. Parasites of commercial shrimps and fishes in Argentine sea: on the adult and metacercaria of Opecoeloides feliciae n. sp. (Digenea: Opecoelidae). Mem Inst Oswaldo Cruz 1992; 87:43-8. [PMID: 1308553 DOI: 10.1590/s0074-02761992000100008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Opecoeloides feliciae n. sp., first record of opecoelid metacercariae in commercial shrimps of South Atlantic Ocean, parasitizing Cynoscion striatus (adults) and Artemesia longinaris (metacercariae), is described, illustrated and compared with related species of the genus. Adults, immature worms and metacercariae are compared, and rates of prevalence and intensity of infection are also given.
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Affiliation(s)
- S R Martorelli
- Centro de Estudios Parasitológicos y Vectores (CEPAVE-CONICET), Facultad de Ciencias Naturales y Museo, La Plata, Argentina
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Martorelli SR. [The role of Cytograpsus angulatus (Crustacea; Brachyura) in the life cycles of Microphallus szidati (Digenea; Microphallidae) and Falsifilicollis chasmagnathi (Acanthocephala; Filicollidae): various aspects of their ecological parasitology]. Mem Inst Oswaldo Cruz 1989; 84:567-74. [PMID: 2487452 DOI: 10.1590/s0074-02761989000400016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Based on a study of the larvae from two helminth species parasitizing the crab Cyrtograpsus angulatus Dana, 1851 (Microphallus szidati Martorelli, 1986 and Falsifilicollis chasmagnathi Holcman-Spector et al., 1977), from Mar chiquita lagoom (Argentina) together with the analyses of their life cycles and rates of prevalence, intensity and association coefficient (compared in definitive and intermediate host) the following conclusions have been reached: a) C. angulatus suns to be an excellent intermediate host in the life-cycles of the studied helminths; b) the size of the crabs and the occurrence of natural amputations in the females (Spivak & Politis, in press) appeared correlated with prevalence; c) in the studied crabs the prevalence for F. chasmagnathi is higher in males than in females; d) the intensity did not appear correlated with size and sex of the intermediate host; e) M. szidati and F. chasmagnathi are closely associated with the intermediate host; f) C. angulatus and Himantopus melanurus Vieillot, 1817 (Aves; Recurvirostridae) are reported as new intermediate and definitive hosts, respectively, for F. chasmagnathi; g) Chasmagnathus granulata Dana, 1851 (Crustacea; Brachyura) is reported as a new intermediate host for M. szidati.
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Affiliation(s)
- S R Martorelli
- CEPAVE-Centro de Estudios Parasitológicos y Vectores, Fac. de Cs. Naturales, Univ. Nacional de La Plata, Argentina
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