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Ibrahim MM, Baghdadi HB, Shahin K, Abdel-Glil M, Thabit H, Attia MM, Abdelsalam M. Dasyrhynchus giganteus plerocercoids encysting in the musculature of Indian halibut (Psettodes erumei): seasonal prevalence, morpho-molecular characterization, and histopathological alterations. BMC Vet Res 2024; 20:332. [PMID: 39039589 DOI: 10.1186/s12917-024-04156-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2024] [Accepted: 06/21/2024] [Indexed: 07/24/2024] Open
Abstract
This study investigated the prevalence, morphology, molecular identification, and histopathological effects of larval tapeworms (plerocercoids) infecting the skeletal muscles of the Indian halibut (Psettodes erumei) collected from the coastal waters of the Arabian Gulf. Numerous oval or round blastocysts, measuring 13-26 mm, were found embedded within the muscular tissues of the Indian halibut, rendering the fish unsuitable for human consumption. Morphological and molecular analyses identified the plerocercoids as Dasyrhynchus giganteus (family Dasyrhynchidae), with an overall prevalence of 15.4%. The seasonal prevalence was the highest in summer (14.6%), followed by spring (10.6%), winter (4.4%), and autumn (3.5%). Infection rates increased with fish size. Histopathological examination revealed fibrous connective tissue capsules surrounding the larvae, causing muscular atrophy and degenerative changes, with few inflammatory eosinophilic cells. Molecular and phylogenetic analysis of the 28S rDNA gene sequences confirmed the specimens as D. giganteus, clustered closely with other sequences of D. giganteus with 100% bootstrap values. This study provided valuable insights into the parasitic infection dynamics, seasonal variation, molecular identification, and histopathological effects, highlighting the importance of monitoring fish for food safety and public health implications.
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Affiliation(s)
- Mustafa M Ibrahim
- Department of Pathology, Animal Health Research Institute, Dokki, Giza, 12618, Egypt
| | - Hanadi B Baghdadi
- Department of Biology, Faculty of Science, Imam Abdul Rahman Bin Faisal University, Dammam, Saudi Arabia
| | - Khalid Shahin
- National Institute of Oceanography and Fisheries, NIOF, 101 Kasr El Ainy St, Cairo, Egypt
| | - Mostafa Abdel-Glil
- Department of Pathology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Sharkia, 44511, Egypt
| | - Hasnaa Thabit
- Department of Zoology and Entomology, Faculty of Science, Assiut University, Assiut, 71526, Egypt
| | - Marwa M Attia
- Department of Parasitology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt.
| | - Mohamed Abdelsalam
- Department of Aquatic Animal Medicine and Management, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
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Paredes-Trujillo A, Hernández-Mena DI, Aguirre-Macedo ML, Mendoza-Garfias MB, Vidal-Martínez VM. Larvae trypanorhynch (Cestoda) infecting the dusky flounder, Syacium papillosum (Paralichthyidae: Pleuronectiformes) in the continental shelf of the Yucatan Peninsula, Mexico. Helminthologia 2024; 61:46-58. [PMID: 38659465 PMCID: PMC11038257 DOI: 10.2478/helm-2024-0002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 11/24/2023] [Indexed: 04/26/2024] Open
Abstract
Trypanorhynch cestode larvae were found parasitizing specimens of dusky flounder Syacium papillosum (Linnaeus, 1758) in the Southeastern Gulf of Mexico (s-GoM). Plerocercoids were recovered from a total of 194 flatfish, embedded in the intestine and stomach wall. Trypanorhynch were identified using morphology and a molecular phylogeny using newly sequenced partial 28S (region D1-D3) ribosomal DNA in combination with data derived from other species of trypanorhynchs available from GenBank. Larvae representing three genera of trypanorhynch cestodes, Nybelinia Poche, 1926; Kotorella Euzet & Radujkovic, 1989 and Oncomegas Dollfus, 1929 were found in dusky flounder specimens in the s-GoM. These plerocercoids represent six species: Nybelinia sp. 1, Nybelinia sp. 2, Nybelinia sp. 3, Nybelinia sp. 4, Kotorella pronosoma (Stossich, 1901) and Oncomegas wageneri (Linton, 1890) Dollfus, 1929. All cestode specimens in this study represent new locality records for their respective species.
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Affiliation(s)
- A. Paredes-Trujillo
- Laboratorio de Sanidad Acuícola, Instituto de Ecología, Pesquerías y Oceanografía (EPOMEX) de la Universidad Autónoma de Campeche. Campus de investigación 6 Av. Héroes de Nacozari 466, Campeche, Campeche, C.P. 24039, México
| | - D. I. Hernández-Mena
- Instituto de Biología, Universidad Nacional Autonoma de México (UNAM), A.P.70-153, C.P. 04510, México D.F
| | - M. L. Aguirre-Macedo
- Laboratorio de Parasitología, Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV-IPN), Unidad Mérida, Carretera Antigua a Progreso Km. 6, Mérida, Yucatán, C.P. 97310, México
| | - M. B. Mendoza-Garfias
- Instituto de Biología, Universidad Nacional Autonoma de México (UNAM), A.P.70-153, C.P. 04510, México D.F
| | - V. M. Vidal-Martínez
- Laboratorio de Parasitología, Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV-IPN), Unidad Mérida, Carretera Antigua a Progreso Km. 6, Mérida, Yucatán, C.P. 97310, México
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Palomba M, Marchiori E, Tedesco P, Fioravanti M, Marcer F, Gustinelli A, Aco-Alburqueque R, Belli B, Canestrelli D, Santoro M, Cipriani P, Mattiucci S. An update and ecological perspective on certain sentinel helminth endoparasites within the Mediterranean Sea. Parasitology 2023; 150:1139-1157. [PMID: 37942726 PMCID: PMC10941224 DOI: 10.1017/s0031182023000951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/06/2023] [Accepted: 10/07/2023] [Indexed: 11/10/2023]
Abstract
The Mediterranean Sea is recognized as a marine biodiversity hotspot. This enclosed basin is facing several anthropogenic-driven threats, such as seawater warming, pollution, overfishing, bycatch, intense maritime transport and invasion by alien species. The present review focuses on the diversity and ecology of specific marine trophically transmitted helminth endoparasites (TTHs) of the Mediterranean ecosystems, aiming to elucidate their potential effectiveness as ‘sentinels’ of anthropogenic disturbances in the marine environment. The chosen TTHs comprise cestodes and nematodes sharing complex life cycles, involving organisms from coastal and marine mid/upper-trophic levels as definitive hosts. Anthropogenic disturbances directly impacting the free-living stages of the parasites and their host population demographies can significantly alter the distribution, infection levels and intraspecific genetic variability of these TTHs. Estimating these parameters in TTHs can provide valuable information to assess the stability of marine trophic food webs. Changes in the distribution of particular TTHs species can also serve as indicators of sea temperature variations in the Mediterranean Sea, as well as the bioaccumulation of pollutants. The contribution of the chosen TTHs to monitor anthropogenic-driven changes in the Mediterranean Sea, using their measurable attributes at both spatial and temporal scales, is proposed.
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Affiliation(s)
- Marialetizia Palomba
- Department of Ecological and Biological Sciences (DEB), Tuscia University, Viterbo, Italy
| | - Erica Marchiori
- Department of Animal Medicine, Production and Health, University of Padova, Legnaro, Padua, Italy
| | - Perla Tedesco
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano dell'Emilia, Bologna, Italy
| | - Marialetizia Fioravanti
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano dell'Emilia, Bologna, Italy
| | - Federica Marcer
- Department of Animal Medicine, Production and Health, University of Padova, Legnaro, Padua, Italy
| | - Andrea Gustinelli
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano dell'Emilia, Bologna, Italy
| | - Renato Aco-Alburqueque
- Department of Public Health and Infectious Diseases, Section of Parasitology, Sapienza University of Rome, Rome, Italy
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Naples, Italy
| | - Beatrice Belli
- Department of Public Health and Infectious Diseases, Section of Parasitology, Sapienza University of Rome, Rome, Italy
| | - Daniele Canestrelli
- Department of Ecological and Biological Sciences (DEB), Tuscia University, Viterbo, Italy
| | - Mario Santoro
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Naples, Italy
| | - Paolo Cipriani
- Department of Public Health and Infectious Diseases, Section of Parasitology, Sapienza University of Rome, Rome, Italy
- Section of Contaminants and Biohazards, Institute of Marine Research (IMR), Nordnes, Bergen, Norway
| | - Simonetta Mattiucci
- Department of Public Health and Infectious Diseases, Section of Parasitology, Sapienza University of Rome, Rome, Italy
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Ramilo A, Abollo E, Pascual S. Molecular characterization of Maccallumtrema xiphiados (Trematoda: Azygiida) and Molicola sp. (Cestoda: Trypanorhyncha) infecting commercial frozen slices of Atlantic swordfish. Int J Food Microbiol 2023; 389:110103. [PMID: 36724602 DOI: 10.1016/j.ijfoodmicro.2023.110103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 01/13/2023] [Accepted: 01/18/2023] [Indexed: 01/26/2023]
Abstract
Muscle gross lesions, associated to parasites, were routinely found during self-inspection in a Spanish fish plant processing Atlantic swordfish. To determine the taxonomic status of these parasites, molecular analysis was performed based on 18S, ITS1, 5.8S, ITS2 and 28S rDNA sequences, obtaining a consensus sequences of 4581 bp for the cestode and 4200 bp for the trematode. Taxonomic affiliation was determined by phylogenetic analysis of combined SSU + LSU rDNA regions using maximum likelihood models. Molecular characterization allows us to identify the trematode Maccallumtrema xiphiados and the cestode Molicola sp. infecting the musculature of the Atlantic swordfish. Both parasites are responsible of significant economic loss to fish industry due to commercial rejection of parasitized products.
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Affiliation(s)
- A Ramilo
- Instituto de Investigaciones Marinas, Consejo Superior de Investigaciones Científicas, IIM-CSIC, 36208 Vigo, Pontevedra, Spain.
| | - E Abollo
- Instituto de Investigaciones Marinas, Consejo Superior de Investigaciones Científicas, IIM-CSIC, 36208 Vigo, Pontevedra, Spain
| | - S Pascual
- Instituto de Investigaciones Marinas, Consejo Superior de Investigaciones Científicas, IIM-CSIC, 36208 Vigo, Pontevedra, Spain
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Santoro M, Palomba M, Aco Alburqueque R, Mattiucci S. Integrative Taxonomy Reveals Molicola uncinatus and Gymnorhynchus gigas (Cestoda: Trypanorhyncha) Coinfection in the Atlantic Pomfret Brama brama From the Mediterranean Sea, With Notes on the Phylogenetic Position of G. gigas Within the Family Gymnorhynchidae. Front Vet Sci 2022; 9:909163. [PMID: 35782558 PMCID: PMC9249017 DOI: 10.3389/fvets.2022.909163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 04/26/2022] [Indexed: 11/13/2022] Open
Abstract
The cestode family Gymnorhynchidae Dollfus, 1935 (Trypanorhyncha) comprises three genera and six valid species that are typically intestinal parasites of large pelagic sharks. Members of Gymnorhynchidae show a wide geographic distribution and represent a global sanitary concern because as larvae they infect the edible flesh of several commercially important fishes with some species having allergenic potential. Larval Gymnorhynchidae collected from the muscles of the Atlantic pomfret Brama brama from various localities in the Mediterranean Sea were identified and characterized by combining traditional morphology, scanning electronic microscopy, and molecular analyses using newly generated nuclear 18S and 28S rRNA sequences. Overall, 98 larvae were collected from 20 (100%) Atlantic pomfrets (intensity of infection: 4.9; range: 1–12). High-quality sequences were obtained for 54 larvae. Of these, 11 and 43 larvae were identified as Molicola uncinatus and Gymnorhynchus gigas, respectively. The phylogenetic analysis showed the existence of three main clades within Gymnorhynchidae. The first included species of G. gigas and M. uncinatus from the Mediterranean and Atlantic; the second and third major clades included an unidentified species of Molicola from the Indian Ocean and specimens of Gymnorhynchus isuri from the Mediterranean and Atlantic, respectively. Finally, Chimaerarhynchus rougetae was the basal and most diverging taxon. The phylogenetic analysis suggested that G. gigas is more closely related to the members of Molicola. We demonstrated the coinfection of M. uncinatus and G. gigas from all localities studied and extended the intermediate hosts and geographical range of M. uncinatus by including the Atlantic pomfret and the Tyrrhenian and Ionian Seas, respectively. The present results supported the previous proposal that G. gigas and Molicola species should be included in the same genus. Our study demonstrated the usefulness of the integrative taxonomy for the unequivocal recognition of larval trypanorhynch species, resolving the current difficulties in the taxonomy, and elucidating the poorly known ecological and biological aspects of members of Gymnorhynchidae.
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Affiliation(s)
- Mario Santoro
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Naples, Italy
- *Correspondence: Mario Santoro
| | - Marialetizia Palomba
- Department of Biological and Ecological Sciences, University of Tuscia, Viterbo, Italy
| | - Renato Aco Alburqueque
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Naples, Italy
- Department of Biological and Ecological Sciences, University of Tuscia, Viterbo, Italy
| | - Simonetta Mattiucci
- Department of Public Health and Infectious Diseases, Section of Parasitology, Sapienza University of Rome, Rome, Italy
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Santoro M, Bellisario B, Crocetta F, Degli Uberti B, Palomba M. A molecular and ecological study of Grillotia (Cestoda: Trypanorhyncha) larval infection in small to mid-sized benthonic sharks in the Gulf of Naples, Mediterranean Sea. Ecol Evol 2021; 11:13744-13755. [PMID: 34707814 PMCID: PMC8525172 DOI: 10.1002/ece3.7933] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 06/03/2021] [Accepted: 07/05/2021] [Indexed: 11/09/2022] Open
Abstract
AIM Trypanorhyncha cestodes comprise a wide range of heteroxenous parasites infecting elasmobranchs as definitive hosts. Limited data exist on the larval infection of these cestodes and the role of intermediate and paratenic hosts in the life cycle of these parasites. We investigated the factors that determine the occurrence and the level of infection of Grillotia plerocerci in the skeletal muscles of various benthonic sharks and analyzed the parasites through an integrative taxonomic approach. LOCATION Mediterranean Sea. METHODS Sharks obtained as bycatch of commercial trawling activities (i.e., Etmopterus spinax, Galeus melastomus, and Scyliorhinus canicula) were used in this study. Data from a limited number of Dalatias licha and Scyliorhinus stellaris were also included. Grillotia plerocerci were molecularly characterized using the partial 28S large subunit rDNA. Boosted regression trees were used to model the relationship between the abundance of infection with both morphological and physiological predictors in each host. RESULTS Plerocerci of Grillotia were detected in all shark species except S. stellaris. Host species significantly differed in terms of parasite abundance, with the highest and lowest prevalence and abundance of infection detected in G. melastomus and E. spinax, respectively. The relative influence of the traits involved in explaining the parasite abundance was related to the host size in G. melastomus, while both morphology- and physiology-related traits explained the patterns observed in E. spinax and S. canicula. The 28S rDNA sequences shared an identity of ∼99.40% with a Grillotia species previously found in the Mediterranean Sea. At intraspecific level, two different genotypes were found. A first type was retrieved only from D. licha, whereas a second type was found in G. melastomus, E. spinax, and S. canicula. MAIN CONCLUSIONS Present results suggest that the two genotypes could be involved in different consumer-resource systems and confirm most of the examined shark species as transport hosts of Grillotia species for unknown larger top predators.
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Affiliation(s)
- Mario Santoro
- Department of Integrative Marine EcologyStazione Zoologica Anton DohrnNaplesItaly
| | - Bruno Bellisario
- Department of Agricultural and Forestry Sciences (DAFNE)University of ViterboViterboItaly
| | - Fabio Crocetta
- Department of Integrative Marine EcologyStazione Zoologica Anton DohrnNaplesItaly
| | - Barbara Degli Uberti
- Department of Animal HealthIstituto Zooprofilattico Sperimentale del MezzogiornoPorticiItaly
| | - Marialetizia Palomba
- Department of Integrative Marine EcologyStazione Zoologica Anton DohrnNaplesItaly
- Department of Public Health and Infectious DiseasesSection of ParasitologySapienza University of RomeRomeItaly
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