1
|
Tilley MF, Barry D, Hanington PC, Goater CP. Description, life cycle, and development of the myxozoan Myxobolus rasmusseni n. sp. in fathead minnows, Pimephales promelas: A possible emerging pathogen in southern Alberta, Canada. Int J Parasitol Parasites Wildl 2024; 24:100944. [PMID: 38973940 PMCID: PMC11225701 DOI: 10.1016/j.ijppaw.2024.100944] [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: 01/24/2024] [Revised: 05/10/2024] [Accepted: 05/11/2024] [Indexed: 07/09/2024]
Abstract
Morphological, gene sequence, host tissue tropism, and life cycle characteristics were utilized to describe the myxozoan, Myxobolus rasmusseni n. sp. from fathead minnow, Pimephales promelas, collected from reservoirs in southern Alberta. Results from serial histological sections of whole heads showed that myxospores were contained within irregular-shaped and sized coelozoic capsules (=plasmodia). Clusters of membrane-bound, myxospore-filled plasmodia filled the head cavities of juvenile fathead minnows, leading to the development of large, white, disfiguring lesions in mid to late summer. Bilateral exopthalmia (pop-eye disease) was a common outcome of M. rasmusseni n. sp. development. BLASTn search of a 1974 bp sequence of the 18S rDNA gene isolated from myxospores indicated that M. rasmusseni n. sp. was distinct from other coelozoic and histozoic Myxobolus spp. cataloged in GenBank. 18S rDNA gene sequences from triactinomyxon spores released from the oligochaete Tubifex were 100% identical to sequences from myxospores collected from syntopic fathead minnows. Results from a longitudinal survey of the 2020 cohort of fathead minnows showed that young-of-the-year are exposed at 1-5 mo and that 60-90% of these had developed myxospore-filled lesions approximately one year later. Data regarding potential sources and timing of M. rasmusseni n. sp. emergence in fathead minnow populations are needed.
Collapse
Affiliation(s)
- Molly F. Tilley
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB, Canada, T1K 3M4
| | - Danielle Barry
- School of Public Health, University of Alberta, Edmonton, AB, Canada, T6G 1C9
| | | | - Cameron P. Goater
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB, Canada, T1K 3M4
| |
Collapse
|
2
|
DePasquale JA. A comparison of teleost rodlet cells with apicomplexan cells. Acta Histochem 2024; 126:152167. [PMID: 38733697 DOI: 10.1016/j.acthis.2024.152167] [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: 01/17/2024] [Revised: 04/05/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024]
Abstract
Rodlet cells are unique pear-shaped cells found primarily in the epithelium of the teleost fishes. The rodlet cell was first identified by Thèlohan in 1892 who named it Rhabdospora thelohani as it was believed to be a protozoan parasite of the phylum Apicomplexa. The rodlet cell as parasite paradigm persisted for several decades afterwards but has since faded in the last 20 years or so. The rodlet cell is now generally believed to be an immune cell, functioning as an early responder to parasite intrusion. This short review makes a detailed comparison of apicomplexan structure and behavior with that of the rodlet cell to further strengthen the argument against a parasitic nature for the fish cell. It is then proposed that apical microvilli of the rodlet cell serve as a mechanical trigger for rodlet discharge as possible defense against larger ectoparasites.
Collapse
|
3
|
Sayyaf Dezfuli B, Franchella E, Bernacchia G, De Bastiani M, Lorenzoni F, Carosi A, Lorenzoni M, Bosi G. Infection of endemic chub Squalius tenellus with the intestinal tapeworm Caryophyllaeus brachycollis (Cestoda): histopathology and ultrastructural surveys. Parasitology 2024; 151:157-167. [PMID: 38193283 PMCID: PMC10941047 DOI: 10.1017/s0031182023001233] [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: 10/09/2023] [Revised: 11/22/2023] [Accepted: 11/25/2023] [Indexed: 01/10/2024]
Abstract
The endemic chub Squalius tenellus (Heckel, 1843) was introduced more than 100 years ago to Lake Blidinje (Bosnia-Herzegovina). Only 1 species of enteric helminth was found in a sample of 35 chubs, the tapeworm Caryophyllaeus brachycollis (Janiszewska, 1953). The paper includes histopathological investigation with identification of innate immune cells involved in host reaction and molecular data allowed correct designation of the cestode species. Of 35 specimens of chub examined, 21 (60%) harboured individuals of C. brachycollis and a total of 1619 tapeworms were counted, the intensity of infection ranged from 1 to 390 worms per fish (46.2 ± 15.3, mean ± s.e.). Histopathological and ultrastructural investigations showed strict contact between the worm's body and the epithelia and increase in the number of mucous cells, rodlet cells among the epithelial cells. Within the tunica propria-submucosa, beneath the site of scolex attachment, numerous neutrophils and mast cells were noticed. This is the first study of the occurrence of C. brachycollis in chub from Lake Blidinje and on the response of the innate immune cells of S. tenellus to this tapeworm. Interestingly, in 3 very heavily infected chubs, perforation of the intestinal wall was documented; this is uncommon among cestodes which use fish as a definitive host.
Collapse
Affiliation(s)
- Bahram Sayyaf Dezfuli
- Department of Life Sciences and Biotechnology, University of Ferrara, St. Borsari 46, 44121 Ferrara, Italy
| | - Emanuela Franchella
- Department of Life Sciences and Biotechnology, University of Ferrara, St. Borsari 46, 44121 Ferrara, Italy
| | - Giovanni Bernacchia
- Department of Life Sciences and Biotechnology, University of Ferrara, St. Borsari 46, 44121 Ferrara, Italy
| | - Morena De Bastiani
- Department of Life Sciences and Biotechnology, University of Ferrara, St. Borsari 46, 44121 Ferrara, Italy
| | - Francesca Lorenzoni
- Department of Chemistry, Biology, and Biotechnology, University of Perugia, St. Elce di sotto 5, 06123 Perugia, Italy
| | - Antonella Carosi
- Department of Chemistry, Biology, and Biotechnology, University of Perugia, St. Elce di sotto 5, 06123 Perugia, Italy
| | - Massimo Lorenzoni
- Department of Chemistry, Biology, and Biotechnology, University of Perugia, St. Elce di sotto 5, 06123 Perugia, Italy
| | - Giampaolo Bosi
- Department of Veterinary Medicine and Animal Science, University of Milan, St. of University 6, 26900, Lodi, Italy
| |
Collapse
|
4
|
Emeish WFA, Abd-ElHafeez HH, Alghamdi AAA, Ahmed M, Khalifa MO, El-Mansi AA, Abou-Elhamd AS, Khormi MM, Alkashif K, Soliman SA. Morphological changes in intraepithelial and stromal telocytes in Cyprinus carpio in response to salinity stress. Sci Rep 2023; 13:19987. [PMID: 37968439 PMCID: PMC10651833 DOI: 10.1038/s41598-023-43279-4] [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: 04/24/2023] [Accepted: 09/21/2023] [Indexed: 11/17/2023] Open
Abstract
Telocytes establish connections and communicate with various types of cells and structures. Few experimental studies have been performed on telocytes. In this study, we investigated the effect of salinity stress on telocytes in relation to osmoregulatory, immune, and stem cells. After exposing the common carp to 0.2 (control), 6, 10, or 14 ppt salinity, we extracted and fixed gill samples in glutaraldehyde, processed and embedded the samples in resin, and prepared semi-thin and ultrathin sections. Two types of telocytes were identified: intraepithelial and stromal telocytes. Intraepithelial telocytes were found to form part of the cellular lining of the lymphatic space and shed secretory vesicles into this space. Stromal telocytes were observed to shed their secretory vesicles into the secondary circulatory vessels. Both intraepithelial and stromal telocytes were enlarged and exhibited increased secretory activities as salinity increased. They exerted their effects via direct contact and paracrine signaling. The following changes were observed in samples from fish exposed to high salinity levels: chloride cells underwent hypertrophy, and their mitochondria became cigar-shaped; pavement cells were enlarged, and their micro-ridges became thin and elongated; stromal telocytes established contact with stem cells and skeletal myoblasts; skeletal muscle cells underwent hypertrophy; and macrophages and rodlet cells increased in number. In conclusion, our findings indicate that intraepithelial and stromal telocytes respond to salinity stress by activating cellular signaling and that they play major roles in osmoregulation, immunity, and regeneration.
Collapse
Affiliation(s)
- Walaa F A Emeish
- Department of Fish Diseases, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt
| | - Hanan H Abd-ElHafeez
- Department of Cell and Tissues, Faculty of Veterinary Medicine, Assiut University, Assiut, 71526, Egypt.
| | | | - Madeha Ahmed
- Department of Histology, Faculty of Veterinary Medicine, Sohag University, Sohagt, 82524, Egypt
| | - Mahmoud Osman Khalifa
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Aswan University, Aswan, Egypt
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Ahmed A El-Mansi
- Biology Department, Faculty of Science, King Khalid University, Abha, Saudi Arabia
| | - Alaa S Abou-Elhamd
- Department of Cell and Tissues, Faculty of Veterinary Medicine, Assiut University, Assiut, 71526, Egypt
- Department of Respiratory Therapy, Faculty of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia
| | - Mohsen M Khormi
- Department of Biology, College of Science, Jazan University, Jazan, Saudi Arabia
| | - Khalid Alkashif
- Physiology Department, faculty of Medicine, Merit University, Sohage, Egypt
| | - Soha A Soliman
- Department of Histology, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt.
| |
Collapse
|
5
|
Sayyaf Dezfuli B, Lorenzoni M, Carosi A, Giari L, Bosi G. Teleost innate immunity, an intricate game between immune cells and parasites of fish organs: who wins, who loses. Front Immunol 2023; 14:1250835. [PMID: 37908358 PMCID: PMC10613888 DOI: 10.3389/fimmu.2023.1250835] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 10/06/2023] [Indexed: 11/02/2023] Open
Abstract
Fish, comprising over 27,000 species, represent the oldest vertebrate group and possess both innate and adaptive immune systems. The susceptibility of most wild fish to parasitic infections and related diseases is well-established. Among all vertebrates, the digestive tract creates a remarkably favorable and nutrient-rich environment, which, in turn, renders it susceptible to microparasites and macroparasites. Consequently, metazoan parasites emerge as important disease agents, impacting both wild and farmed fish and resulting in substantial economic losses. Given their status as pathogenic organisms, these parasites warrant considerable attention. Helminths, a general term encompassing worms, constitute one of the most important groups of metazoan parasites in fish. This group includes various species of platyhelminthes (digeneans, cestodes), nematodes, and acanthocephalans. In addition, myxozoans, microscopic metazoan endoparasites, are found in water-dwelling invertebrates and vertebrate hosts. It is worth noting that several innate immune cells within the fish alimentary canal and certain visceral organs (e.g., liver, spleen, and gonads) play active roles in the immune response against parasites. These immune cells include macrophages, neutrophils, rodlet cells, and mast cells also known as eosinophilic granular cells. At the site of intestinal infection, helminths often impact mucous cells number and alter mucus composition. This paper presents an overview of the state of the art on the occurrence and characteristics of innate immune cells in the digestive tract and other visceral organs in different fish-parasite systems. The data, coming especially from studies employed immunohistochemical, histopathological, and ultrastructural analyses, provide evidence supporting the involvement of teleost innate immune cells in modulating inflammatory responses to metazoan and protozoan parasitic infections.
Collapse
Affiliation(s)
- Bahram Sayyaf Dezfuli
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Massimo Lorenzoni
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Perugia, Italy
| | - Antonella Carosi
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Perugia, Italy
| | - Luisa Giari
- Department of Environmental and Prevention Sciences, University of Ferrara, Ferrara, Italy
| | - Giampaolo Bosi
- Department of Veterinary Medicine and Animal Science, University of Milan, Lodi, Italy
| |
Collapse
|
6
|
Born-Torrijos A, van Beest GS, Merella P, Garippa G, Raga JA, Montero FE. Mapping a brain parasite: Occurrence and spatial distribution in fish encephalon. INTERNATIONAL JOURNAL FOR PARASITOLOGY: PARASITES AND WILDLIFE 2023; 21:22-32. [PMID: 37081833 PMCID: PMC10111940 DOI: 10.1016/j.ijppaw.2023.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 03/09/2023] [Accepted: 03/10/2023] [Indexed: 03/13/2023]
Abstract
Parasites, especially brain-encysting trematodes, can have an impact on host behaviour, facilitating the transmission to next host and completion of the life cycle, but insufficient research has been done on whether specific brain regions are targeted. Using Cardiocephaloides longicollis as a laboratory model, the precise distribution of metacercariae in experimentally-infected, wild and farmed fish was mapped. The brain regions targeted by this parasite were explored, also from a histologic perspective, and potential pathogenic effects were evaluated. Experimental infections allowed to reproduce the natural infection intensity of C. longicollis, with four times higher infection intensity at the higher dose (150 vs 50 cercariae). The observed metacercarial distribution, similar among all fish groups, may reflect a trematode species-specific pattern: metacercariae occur with highest density in the optic lobe area (primarily infecting the periventricular gray zone of optic tectum) and the medulla oblongata, whereas other areas such as the olfactory lobes and cerebellar lobes may be occupied when the more frequently invaded parts of the brain were crowded. Mono- and multicysts (i.e. formed either with a single metacercaria, or with 2-25 metacercariae encapsulated together) may be formed depending on the aggregation and timing of metacercariae arrival, with minor host inflammatory response. Larvae of C. longicollis colonizing specific brain areas may have an effect on the functions associated with these areas, which are generally related to sensory and motor functions, but are also related to other host fitness traits such as school maintenance or recognition of predators. The detailed information on the extent and distribution of C. longicollis in fish encephalon sets the ground to understand the effects of brain parasites on fish, but further investigation to establish if C. longicollis, through purely mechanical damage (e.g., occupation, pressure and displacement), has an actual impact on host behaviour remains to be tested under controlled experimental conditions.
Collapse
Affiliation(s)
- Ana Born-Torrijos
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Branišovská 31, 370 05, České Budějovice, Czech Republic
- Department of Coastal Systems, NIOZ Royal Netherlands Institute for Sea Research, Den Burg, Texel, Netherlands
- Corresponding author. Department of Coastal Systems, NIOZ Royal Netherlands Institute for Sea Research, Den Burg, Texel, Netherlands.
| | - Gabrielle S. van Beest
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Branišovská 31, 370 05, České Budějovice, Czech Republic
- Cavanilles Institute for Biodiversity and Evolutionary Biology, Science Park, University of Valencia, PO Box 22 085, 46071, Valencia, Spain
| | - Paolo Merella
- Dipartimento di Medicina Veterinaria, Università di Sassari, Sassari, Italy
| | - Giovanni Garippa
- Dipartimento di Medicina Veterinaria, Università di Sassari, Sassari, Italy
| | - Juan Antonio Raga
- Cavanilles Institute for Biodiversity and Evolutionary Biology, Science Park, University of Valencia, PO Box 22 085, 46071, Valencia, Spain
| | - Francisco E. Montero
- Cavanilles Institute for Biodiversity and Evolutionary Biology, Science Park, University of Valencia, PO Box 22 085, 46071, Valencia, Spain
| |
Collapse
|
7
|
Alesci A, Cicero N, Fumia A, Petrarca C, Mangifesta R, Nava V, Lo Cascio P, Gangemi S, Di Gioacchino M, Lauriano ER. Histological and Chemical Analysis of Heavy Metals in Kidney and Gills of Boops boops: Melanomacrophages Centers and Rodlet Cells as Environmental Biomarkers. TOXICS 2022; 10:toxics10050218. [PMID: 35622632 PMCID: PMC9147125 DOI: 10.3390/toxics10050218] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 04/20/2022] [Accepted: 04/25/2022] [Indexed: 12/17/2022]
Abstract
Industrialization has resulted in a massive increase in garbage output, which is frequently discharged or stored in waterways like rivers and seas. Due to their toxicity, durability, bioaccumulation, and biomagnification, heavy metals (such as mercury, cadmium, and lead) have been identified as strong biological poisons. Their presence in the aquatic environment has the potential to affect water quality parameters and aquatic life in general. Teleosts’ histopathology provides a sensitive indicator of pollutant-induced stress, because their organs have a central role in the transformation of different active chemical compounds in the aquatic environment. In particular, the gills, kidneys, and liver are placed at the center of toxicological studies. The purpose of this study is to examine the morphological changes caused by heavy metals in the kidney and gills of Boops boops, with a focus on melanomacrophages centers (MMCs) and rodlet cells (RCs) as environmental biomarkers, using histological and histochemical stainings (hematoxylin/eosin, Van Gieson trichrome, Periodic Acid Schiff reaction, and Alcian Blue/PAS 2.5), and immunoperoxidase methods. Our findings show an increase of MMCs and RCs linked to higher exposure to heavy metals, confirming the role of these aggregates and cells as reliable biomarkers of potential aquatic environmental changes reflected in fish fauna. The cytological study of RCs and MMCs could be important in gaining a better understanding of the complicated immune systems of teleosts.
Collapse
Affiliation(s)
- Alessio Alesci
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Stagno d’Alcontres 31, 98166 Messina, Italy; (P.L.C.); (E.R.L.)
- Correspondence: (A.A.); (N.C.); (A.F.)
| | - Nicola Cicero
- Department of Biomedical and Dental Science and Morphofunctional Imaging, University of Messina, Via Consolare Valeria, 98125 Messina, Italy;
- Correspondence: (A.A.); (N.C.); (A.F.)
| | - Angelo Fumia
- Department of Clinical and Experimental Medicine, University of Messina, Viale Gazzi, 98147 Messina, Italy;
- Correspondence: (A.A.); (N.C.); (A.F.)
| | - Claudia Petrarca
- Center of Advanced Science and Technology (CAST), G. D’Annunzio University, 66100 Chieti, Italy; (C.P.); (R.M.); (M.D.G.)
- YDA–Institute of Clinical Immunotherapy and Advanced Biological Treatments, 65121 Pescara, Italy
| | - Rocco Mangifesta
- Center of Advanced Science and Technology (CAST), G. D’Annunzio University, 66100 Chieti, Italy; (C.P.); (R.M.); (M.D.G.)
| | - Vincenzo Nava
- Department of Biomedical and Dental Science and Morphofunctional Imaging, University of Messina, Via Consolare Valeria, 98125 Messina, Italy;
| | - Patrizia Lo Cascio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Stagno d’Alcontres 31, 98166 Messina, Italy; (P.L.C.); (E.R.L.)
| | - Sebastiano Gangemi
- Department of Clinical and Experimental Medicine, University of Messina, Viale Gazzi, 98147 Messina, Italy;
| | - Mario Di Gioacchino
- Center of Advanced Science and Technology (CAST), G. D’Annunzio University, 66100 Chieti, Italy; (C.P.); (R.M.); (M.D.G.)
- YDA–Institute of Clinical Immunotherapy and Advanced Biological Treatments, 65121 Pescara, Italy
| | - Eugenia Rita Lauriano
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Stagno d’Alcontres 31, 98166 Messina, Italy; (P.L.C.); (E.R.L.)
| |
Collapse
|
8
|
Alesci A, Pergolizzi S, Capillo G, Lo Cascio P, Lauriano ER. Rodlet cells in kidney of goldfish (Carassius auratus, Linnaeus 1758): A light and confocal microscopy study. Acta Histochem 2022; 124:151876. [PMID: 35303512 DOI: 10.1016/j.acthis.2022.151876] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/09/2022] [Accepted: 03/09/2022] [Indexed: 02/08/2023]
Abstract
Rodlet cells (RCs) have always been an enigma for scientists. RCs have been given a variety of activities over the years, including ion transport, osmoregulation, and sensory function. These cells, presumably as members of the granulocyte line, are present only in teleosts and play a role in the innate immune response. RCs are migratory cells found in a variety of organs, including skin, vascular, digestive, uropoietic, reproductive, and respiratory systems, and present distinct physical properties that make them easily recognizable in tissues and organs. The development of RCs can be divided into four stages: granular, transitional, mature, and ruptured, having different morphological characteristics. Our study aims to characterize the different stages of these cells by histomorphological and histochemical techniques. Furthermore, we characterized these cells at all stages with peroxidase and fluorescence immunohistochemical techniques using different antibodies: S100, tubulin, α-SMA, piscidin, and for the first time TLR-2. From our results, the immunoreactivity of these cells to the antibodies performed may confirm that RCs play a role in fish defense mechanisms, helping to expand the state of the art on immunology and immune cells of teleosts.
Collapse
|
9
|
Sayyaf Dezfuli B, Pironi F, Maynard B, Simoni E, Bosi G. Rodlet cells, fish immune cells and a sentinel of parasitic harm in teleost organs. FISH & SHELLFISH IMMUNOLOGY 2022; 121:516-534. [PMID: 35123696 DOI: 10.1016/j.fsi.2021.09.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/28/2021] [Accepted: 09/30/2021] [Indexed: 06/14/2023]
Abstract
Rodlet cells (RCs) are the enigmatic and distinctive pear-shaped cells had found in many tissues of marine and freshwater teleosts. They have a distinctive fibrous capsule or the cell cortex that envelopes conspicuous inclusions called rodlets, basally situated nucleus, and poorly developed mitochondria. The contraction of the cell cortex results in the expulsion of the cell contents through an apical opening. One hundred and thirty years since rodlet cells were first reported, many questions remain about their origin and a function. This review will present new evidence regarding the relationship between RCs and metazoan parasites, and a protozoan infecting organs of different fish species, and update the state of knowledge about the origin, structure and the function of these intriguing fish cells.
Collapse
Affiliation(s)
- Bahram Sayyaf Dezfuli
- Department of Life Sciences and Biotechnology, University of Ferrara, St. Borsari 46, 44121, Ferrara, Italy.
| | - Flavio Pironi
- Department of Life Sciences and Biotechnology, University of Ferrara, St. Borsari 46, 44121, Ferrara, Italy.
| | - Barbara Maynard
- The Institute for Learning and Teaching, Colorado State University, Fort Collins, CO, 80523, USA.
| | - Edi Simoni
- Department of Neurosciences, University of Padua, St. Giuseppe Orus, 2/B, 35128, Padua, Italy.
| | - Giampaolo Bosi
- Department of Health, Animal Science and Food Safety, University of Milan, St. of University 6, 26900, Lodi, Italy.
| |
Collapse
|
10
|
Achatz TJ, Chermak TP, Martens JR, Pulis EE, Fecchio A, Bell JA, Greiman SE, Cromwell KJ, Brant SV, Kent ML, Tkach VV. Unravelling the diversity of the Crassiphialinae (Digenea: Diplostomidae) with molecular phylogeny and descriptions of five new species. CURRENT RESEARCH IN PARASITOLOGY & VECTOR-BORNE DISEASES 2021; 1:100051. [PMID: 35284861 PMCID: PMC8906103 DOI: 10.1016/j.crpvbd.2021.100051] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 09/05/2021] [Accepted: 09/18/2021] [Indexed: 11/18/2022]
Abstract
Crassiphialinae Sudarikov, 1960 is a large subfamily of the Diplostomidae Poirier, 1886 with a complex taxonomic history. It includes a diversity of species parasitic in the intestines of avian and mammalian definitive hosts worldwide. Posthodiplostomum Dubois, 1936 is a large and broadly distributed crassiphialine genus notorious for its association with diseases in their fish second intermediate hosts. In this study, we generated partial 28S rDNA and cytochrome c oxidase subunit 1 (cox1) mtDNA gene sequences of digeneans belonging to seven crassiphialine genera. The 28S sequences were used to study the interrelationships among crassiphialines and their placement among other major diplostomoidean lineages. Our molecular phylogenetic analysis and review of morphology does not support subfamilies currently recognized in the Diplostomidae; therefore, we abandon the current subfamily system of the Diplostomidae. Molecular phylogenetic analyses suggest the synonymy of Posthodiplostomum, Ornithodiplostomum Dubois, 1936 and Mesoophorodiplostomum Dubois, 1936; morphological study of our well-fixed adult specimens and review of literature revealed lack of consistent differences among the three genera. Thus, we synonymize Ornithodiplostomum and Mesoophorodiplostomum with Posthodiplostomum. Our phylogenetic analyses suggest an Old World origin of Posthodiplostomum followed by multiple dispersal events among biogeographic realms. Furthermore, our analyses indicate that the ancestors of these digeneans likely parasitized ardeid definitive hosts. Four new species of Posthodiplostomum collected from birds in the New World as well as one new species of Posthodiplostomoides Williams, 1969 from Uganda are described.
Collapse
Affiliation(s)
- Tyler J. Achatz
- Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9019, Grand Forks, ND 58202, USA,Department of Natural Sciences, Middle Georgia State University, Macon, GA 31206, USA
| | - Taylor P. Chermak
- Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9019, Grand Forks, ND 58202, USA
| | - Jakson R. Martens
- Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9019, Grand Forks, ND 58202, USA
| | - Eric E. Pulis
- Department of Science and Mathematics, Northern State University, Aberdeen, SD 57401, USA
| | - Alan Fecchio
- Programa de Pós-graduação em Ecologia e Conservação da Biodiversidade, Universidade Federal de Mato Grosso, Cuiabá 78060900, Mato Grosso, Brazil
| | - Jeffrey A. Bell
- Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9019, Grand Forks, ND 58202, USA
| | - Stephen E. Greiman
- Department of Biology, Georgia Southern University, Statesboro, GA 30460, USA
| | - Kara J. Cromwell
- Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA,Confluence Ecology, Missoula, MT 59802, USA
| | - Sara V. Brant
- Museum of Southwestern Biology, Division of Parasites, Department of Biology, University of New Mexico, Albuquerque, NM 87131, USA
| | - Michael L. Kent
- Department of Microbiology, Oregon State University, 220 Nash Hall, Corvallis, OR 97331, USA
| | - Vasyl V. Tkach
- Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9019, Grand Forks, ND 58202, USA,Corresponding author.
| |
Collapse
|
11
|
Survival of metazoan parasites in fish: Putting into context the protective immune responses of teleost fish. ADVANCES IN PARASITOLOGY 2021; 112:77-132. [PMID: 34024360 DOI: 10.1016/bs.apar.2021.03.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Defence mechanisms of fish can be divided into specific and non-specific that act in concert and are often interdependent. Most fish in both wild and cultured populations are vulnerable to metazoan parasites. Endoparasitic helminths include several species of digeneans, cestodes, nematodes, and acanthocephalans. Although they may occur in large numbers, helminth infections rarely result in fish mortality. Conversely, some ectoparasites cause mass mortality in farmed fish. Given the importance of fish innate immunity, this review addresses non-specific defence mechanisms of fish against metazoan parasites, with emphasis on granulocyte responses involving mast cells, neutrophils, macrophages, rodlet cells, and mucous cells. Metazoan parasites are important disease agents that affect wild and farmed fish and can induce high economic loss and, as pathogen organisms, deserve considerable attention. The paper will provide our light and transmission electron microscopy data on metazoan parasites-fish innate immune and neuroendocrine systems. Insights about the structure and functions of the cell types listed above and a brief account of the effects and harms of each metazoan taxon to specific fish apparati/organs will be presented.
Collapse
|
12
|
Abd-Elhafeez HH, Abdo W, Kamal BM, Soliman SA. Fish telocytes and their relation to rodlet cells in ruby-red-fin shark (rainbow shark) Epalzeorhynchos frenatum (Teleostei: Cyprinidae). Sci Rep 2020; 10:18907. [PMID: 33144597 PMCID: PMC7641163 DOI: 10.1038/s41598-020-75677-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 10/19/2020] [Indexed: 12/11/2022] Open
Abstract
Telocytes comprise the major constituents of the supportive interstitial framework within the various organs. They form a 3D network between different types of stromal and non-stromal cells, which makes them distinctively vital. We have previously explored the origin of the peculiar rodlet cells, especially on their differential stages in aquatic species. The current study aimed at highlighting the relation of telocytes with different rodlet stages. Samples of fish, olfactory organs, and gills were processed for semi thin sections, transmission electron microscopy, and immunohistochemistry. It was evident in the study that telocytes formed a 3D interstitial network, entrapping stem cells and differentiating rodlet cells, to establish direct contact with stem cells. Differentiated stem cells and rodlet progenitor cells, practically in the granular and transitional stages, also formed ultrastructure junctional modifications, by which nanostructures are formed to establish cell contact with telocytes. Telocytes in turn also connected with macrophage progenitor cells. Telocytes (TCs) expressed CD34, CD117, VEGF, and MMP-9. In conclusion, telocytes established direct contact with the stem and rodlet cells in various differential stages. Telocytes may vitally influence stem/progenitor cell differentiation, regulate rodlet cell function, and express MPP-9 that may regulate immune cells functions especially, including movement and migration ability.
Collapse
Affiliation(s)
- Hanan H Abd-Elhafeez
- Department of Anatomy, Embryology and Histology, Faculty of Veterinary Medicine, Assiut University, Assiut, 71526, Egypt.
| | - Walied Abdo
- Department of Pathology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafr el-Sheikh, 33516, Egypt
| | - Basma Mohamed Kamal
- Anatomy and Embryology Department, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, 32897, Egypt
| | - Soha A Soliman
- Department of Histology, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt
| |
Collapse
|
13
|
Ibrahim IA, Mokhtar DM, Fadl S. The morphological development of the proventriculus of Dandarawi chick: Light and electron microscopical studies. Morphologie 2020; 104:1-19. [PMID: 31587839 DOI: 10.1016/j.morpho.2019.09.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 09/11/2019] [Accepted: 09/16/2019] [Indexed: 06/10/2023]
Abstract
This study was carried out on 40 chick embryos collected from incubated eggs of Dandarawi chicken (Gallus gallus domesticus) on the 5th to 19th incubation day (27 to 45 Hamburger and Hamilton, H&H stages). In addition, 15 chicks were collected on the day of hatching (stage 46 H&H), one week and two weeks post-hatching to demonstrate the histological, histochemical, and electron microscopic developmental changes of the proventriculus (of the digestive tract). Histologically, the proventriculus was observed as a narrow tube at 27 H&H stage. It was lined by pseudostratified columnar epithelium through 27-39 H&H stages and from the stage 43 till post-hatching, it was lined by simple columnar epithelium. The Lamina muscularis mucosa could be identified at stage 43. The proventricular glands were detected firstly at stage 31 and branching at stage 35. Histochemically, the surface epithelium and proventricular glands reacted positively to PAS, alcian blue and bromophenol blue from stage 31 till maturity. The glands displayed an apocrine mode of secretion at stage 39 and their cytoplasm contained abundant mitochondria, RER, secretory granules, and lipid droplets. Enteroendocrine cells could be observed among the glandular and surface epithelium at stage 45 H&H. The interstitial tissue contained fibroblasts and telocytes. The telocytes were firstly detected at stage 35 H&H and composed of a cell body and two long cell processes called telopodes. The tunica muscularis differentiated into three layers of smooth muscle fibers at stage 37 H&H. The cellular and stromal organizations of the proventriculus and their relations to the development and function were discussed.
Collapse
Affiliation(s)
- I A Ibrahim
- Department of Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
| | - Doaa M Mokhtar
- Department of Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt.
| | - S Fadl
- Department of Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
| |
Collapse
|
14
|
Putative Rodlet Cell Neoplasms in the Livers of Two White Suckers (Catostomus commersonii). J Comp Pathol 2018; 164:1-16. [DOI: 10.1016/j.jcpa.2018.08.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Revised: 07/31/2018] [Accepted: 08/02/2018] [Indexed: 02/01/2023]
|
15
|
Bosi G, DePasquale JA, Manera M, Castaldelli G, Giari L, Sayyaf Dezfuli B. Histochemical and immunohistochemical characterization of rodlet cells in the intestine of two teleosts, Anguilla anguilla and Cyprinus carpio. JOURNAL OF FISH DISEASES 2018; 41:475-485. [PMID: 29159968 DOI: 10.1111/jfd.12751] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 09/22/2017] [Accepted: 09/24/2017] [Indexed: 06/07/2023]
Abstract
Rodlet cells (RC) are characterized by a distinctive cell cortex and conspicuous inclusions named "rodlets." These cells are particularly abundant and large in size in intestine of eels. Histochemical, immunohistochemical and ultrastructural investigations were carried out on European eel Anguilla anguilla and Common carp Cyprinus carpio from Northern Italy. Eight biotinylated lectins were used to probe for specific carbohydrate residues in deparaffinized, hydrated intestinal sections of eel and carp. Five antibodies were tested on intestinal sections of both fish species: inducible nitric oxide synthase (i-NOS), leu-enkephalin, lysozyme, serotonin and tumour necrosis factor-α. Lectin histochemistry revealed rodlet cells (RCs) of the eel intestine to react with two of the eight lectins tested, specifically Concanavalin A (ConA) and Sambucus Nigra Agglutinin (SNA). This contrasted to lectin staining of RCs in the intestine of common carp, where four of the eight lectins showed a positive reaction; Dolichos Biflorus Agglutinin (DBA), Wheat Germ Agglutinin (WGA), SNA and ConA. RCs in eel and carp intestine were immunoreactive with antibodies to lysozyme and i-NOS. The occurrence of the inflammatory peptides lysozyme and i-NOS in RCs of the eel and common carp poses in favour that these cells are involved in the mechanism of defence against pathogens.
Collapse
Affiliation(s)
- G Bosi
- Department of Health, Animal Science and Food Safety, Università degli Studi di Milano, Milan, Italy
| | | | - M Manera
- Faculty of Biosciences, Food and Environmental Technologies, University of Teramo, Teramo, Italy
| | - G Castaldelli
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - L Giari
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - B Sayyaf Dezfuli
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| |
Collapse
|
16
|
Sayyaf Dezfuli B, Castaldelli G, Giari L. Histopathological and ultrastructural assessment of two mugilid species infected with myxozoans and helminths. JOURNAL OF FISH DISEASES 2018; 41:299-307. [PMID: 29064086 DOI: 10.1111/jfd.12713] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 08/03/2017] [Accepted: 08/04/2017] [Indexed: 06/07/2023]
Abstract
The histopathology and ultrastructure of the intestine of mullets, Liza ramada and Liza saliens, from Comacchio lagoons (northern Italy) naturally infected with myxozoans and helminths were investigated and described. Sixty-two (80.5%) of 77 mullets harboured one or more of the following parasites species: Myxobolus mugchelo (Myxozoa), Neoechinorhynchus agilis (Acanthocephala), Haplosplanchnus pachysomus and Dicrogaster contractus (Digenea). Co-occurrence of helminths with myxozoans was common. The main damage caused by digeneans was destruction of the mucosal epithelium of the villi, necrosis and degeneration of intestinal epithelial cells. More severe intestinal damage was caused by acanthocephalans which reach the submucosa layer with their proboscis. At the site of helminths infection, several mast cells (MCs), rodlet cells (RCs), mucous cells and few neutrophils and macrophages were observed in the epithelium. RCs and mucous cells exhibited discharge activity in close vicinity to the worm's tegument. M. mugchelo conspicuous plasmodia were encysted mainly in muscle and submucosa layers of the intestine. Indeed, spores of M. mugchelo were documented within the epithelial cells of host intestine and in proximity to MCs. Degranulation of the MCs near the myxozoans was very frequent.
Collapse
Affiliation(s)
- B Sayyaf Dezfuli
- Department of Life Sciences & Biotechnology, University of Ferrara, Ferrara, Italy
| | - G Castaldelli
- Department of Life Sciences & Biotechnology, University of Ferrara, Ferrara, Italy
| | - L Giari
- Department of Life Sciences & Biotechnology, University of Ferrara, Ferrara, Italy
| |
Collapse
|
17
|
Blasco-Costa I, Locke SA. Life History, Systematics and Evolution of the Diplostomoidea Poirier, 1886: Progress, Promises and Challenges Emerging From Molecular Studies. ADVANCES IN PARASITOLOGY 2017; 98:167-225. [PMID: 28942769 DOI: 10.1016/bs.apar.2017.05.001] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Members of the Diplostomoidea mature in amniotes and employ vertebrates, annelids and molluscs as second intermediate hosts. Diplostomoid life cycles generally follow a three-host pattern typical of digeneans, but novelties have arisen in some species, including obligate four-host life cycles, vertical transmission, and intracellular parasitism. In this review, we summarize the basic biology of diplostomoids with reference to molecular studies, and present challenges, gaps and areas where molecular data could address long-standing questions. Our analysis of published studies revealed that most molecular surveys find more diplostomoid species than expected, but this tendency is influenced by how much effort goes into examining specimens morphologically and the number of sequenced worms. To date, molecular work has concentrated disproportionately on intraspecific or species-level diversity of larval stages in the Diplostomidae in temperate northern regions. Although the higher taxonomy of the superfamily is recognized to be in need of revision, little molecular work has been conducted at this level. Our phylogenetic analysis indicates several families and subfamilies require reconsideration, and that larval morphotypes are more reflective of evolutionary relationships than definitive hosts. The host associations of adult diplostomoids result from host-switching processes, whereas molecular surveys indicate that larval diplostomoid metacercariae have narrow ranges of second intermediate hosts, consistent with coevolution. Molecular data are often used to link diplostomoid developmental stages, and we provide data from adult Neodiplostomum and Mesoophorodiplostomum that correct earlier misidentifications of their larval stages and propose alternatives to collecting definitive hosts.
Collapse
|
18
|
Dezfuli BS, Bosi G, DePasquale JA, Manera M, Giari L. Fish innate immunity against intestinal helminths. FISH & SHELLFISH IMMUNOLOGY 2016; 50:274-287. [PMID: 26868213 DOI: 10.1016/j.fsi.2016.02.002] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 01/29/2016] [Accepted: 02/04/2016] [Indexed: 06/05/2023]
Abstract
Most individual fish in farmed and wild populations are infected with parasites. Upon dissection of fish, helminths from gut are often easily visible. Enteric helminths include several species of digeneans, cestodes, acanthocephalans and nematodes. Some insights into biology, morphology and histopathological effects of the main fish enteric helminths taxa will be described here. The immune system of fish, as that of other vertebrates, can be subdivided into specific and aspecific types, which in vivo act in concert with each other and indeed are interdependent in many ways. Beyond the small number of well-described models that exist, research focusing on innate immunity in fish against parasitic infections is lacking. Enteric helminths frequently cause inflammation of the digestive tract, resulting in a series of chemical and morphological changes in the affected tissues and inducing leukocyte migration to the site of infection. This review provides an overview on the aspecific defence mechanisms of fish intestine against helminths. Emphasis will be placed on the immune cellular response involving mast cells, neutrophils, macrophages, rodlet cells and mucous cells against enteric helminths. Given the relative importance of innate immunity in fish, and the magnitude of economic loss in aquaculture as a consequence of disease, this area deserves considerable attention and support.
Collapse
Affiliation(s)
- B S Dezfuli
- Department of Life Sciences and Biotechnology, University of Ferrara, University of Ferrara, Ferrara, Italy.
| | - G Bosi
- Department of Veterinary Sciences and Technologies for Food Safety, Università degli Studi di Milano, Milan, Italy
| | - J A DePasquale
- Morphogenyx Inc, PO Box 717, East Northport, NY 11731, USA
| | - M Manera
- Faculty of Biosciences, Food and Environmental Technologies, University of Teramo, Teramo, Italy
| | - L Giari
- Department of Life Sciences and Biotechnology, University of Ferrara, University of Ferrara, Ferrara, Italy
| |
Collapse
|
19
|
Dezfuli BS, Manera M, Giari L, DePasquale JA, Bosi G. Occurrence of immune cells in the intestinal wall of Squalius cephalus infected with Pomphorhynchus laevis. FISH & SHELLFISH IMMUNOLOGY 2015; 47:556-564. [PMID: 26434712 DOI: 10.1016/j.fsi.2015.09.043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 09/25/2015] [Accepted: 09/29/2015] [Indexed: 06/05/2023]
Abstract
A sub-population of 34 specimens of chub, Squalius cephalus, was sampled from the River Brenta (Northern Italy) and examined for ecto- and endo-parasites. Pomphorhynchus laevis (Acanthocephala) was the only enteric helminth encountered. Immunofluorescence and ultrastructural studies were conducted on the intestines of chub. Near the site of parasite's attachment, mucous cells, mast cells (MCs), neutrophils and rodlet cells (RCs) were found to co-occur within the intestinal epithelium. The numbers of mucous cells, MCs and neutrophils were significantly higher in infected fish (Mann-Whitney U test, p < 0.05). Dual immunofluorescence staining with the lectin Dolichos Biflorus Agglutinin (DBA) and the macrophage-specific MAC387 monoclonal antibody, with parallel transmission electron microscopy, revealed that epithelial MCs often made intimate contact with the mucous cells. Degranulation of a large number of MCs around the site of the acanthocephalan's attachment and in proximity to mucous cells was also documented. MCs and neutrophils were abundant in the submucosa. Immune cells of the intestinal epithelium have been described at the ultrastructural level and their possible functions and interactions are discussed.
Collapse
Affiliation(s)
- Bahram S Dezfuli
- Department of Life Sciences & Biotechnology, University of Ferrara, St. Borsari 46, 44121 Ferrara, Italy.
| | - Maurizio Manera
- Faculty of Biosciences, Agro-Alimentary and Environmental Technologies, University of Teramo, St. Crispi 212, I-64100 Teramo, Italy
| | - Luisa Giari
- Department of Life Sciences & Biotechnology, University of Ferrara, St. Borsari 46, 44121 Ferrara, Italy
| | | | - Giampaolo Bosi
- Department of Veterinary Sciences and Technologies for Food Safety, Università degli Studi di Milano, St. Trentacoste 2, 20134 Milan, Italy
| |
Collapse
|
20
|
Abstract
Host behavioural modification by parasites is a common and well-documented phenomenon. However, knowledge on the complexity and specificity of the underlying mechanisms is limited, and host specificity among manipulating parasites has rarely been experimentally verified. We tested the hypothesis that the ability to infect and manipulate host behaviour is restricted to phylogenetically closely related hosts. Our model system consisted of the brain-encysting trematode Euhaplorchis sp. A and six potential fish intermediate hosts from the Order Cyprinodontiformes. Five co-occurring cyprinids were examined for naturally acquired brain infections. Then we selected three species representing three levels of taxonomic relatedness to a known host to experimentally evaluate their susceptibility to infection, and the effect of infection status on behaviours presumably linked to increased trophic transmission. We found natural brain infections of Euhaplorchis sp. A metacercariae in three cyprinids in the shallow sublittoral zone. Of the three experimentally exposed species, Fundulus grandis and Poecilia latipinna acquired infections and displayed an elevated number of conspicuous behaviours in comparison with uninfected controls. Euhaplorchis sp. A was able to infect and manipulate fish belonging to two different families, suggesting that ecological similarity rather than genetic relatedness determines host range in this species.
Collapse
|
21
|
Grobbelaar A, van As LL, van As JG, Butler HJB. Pathology of eyes and brain of fish infected with diplostomids, southern Africa. AFRICAN ZOOLOGY 2015. [DOI: 10.1080/15627020.2015.1055701] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
22
|
Schultz AG, Jones PL, Toop T. Rodlet cells in Murray cod, Maccullochella peelii peelii (Mitchell), affected with chronic ulcerative dermatopathy. JOURNAL OF FISH DISEASES 2014; 37:219-228. [PMID: 23496361 DOI: 10.1111/jfd.12099] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 01/17/2013] [Accepted: 01/27/2013] [Indexed: 06/01/2023]
Abstract
We have previously identified an unknown cell type in the gills of Murray cod affected with chronic ulcerative dermatopathy (CUD), a condition that causes severe erosion of epidermis surrounding cephalic and lateral line sensory canals. The condition arises in aquaculture facilities that utilize groundwater, with the cause of the condition suggested to be an unknown contaminant(s). Light and transmission electron microscopy were used to characterize and quantify the unknown cells in CUD-affected Murray cod. The cells were identified as rodlet cells and were characterized by their oval or round shape, basally located nucleus, thick fibrillar capsule surrounding the cell, and multiple rodlet sacs containing a central electron-dense core within the cell. Rodlet cells were present in the gills, kidney and intestine of non-CUD-affected and CUD-affected Murray cod; however, differences in the numbers were observed between the groups of fish. A significantly greater number of rodlet cells were observed in the gills and collecting ducts of CUD-affected fish. This is the first report of rodlet cells in Murray cod, and we suggest that the increased rodlet cell numbers in CUD-affected Murray cod may be in response to unknown water contaminant(s) present in the groundwater that give rise to CUD.
Collapse
Affiliation(s)
- A G Schultz
- School of Life and Environmental Sciences, Deakin University, Geelong, VIC, Australia
| | | | | |
Collapse
|
23
|
Dezfuli BS, Lui A, Pironi F, Manera M, Shinn AP, Lorenzoni M. Cell types and structures involved in tench, Tinca tinca (L.), defence mechanisms against a systemic digenean infection. JOURNAL OF FISH DISEASES 2013; 36:577-585. [PMID: 23294469 DOI: 10.1111/jfd.12049] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 10/13/2012] [Accepted: 10/13/2012] [Indexed: 06/01/2023]
Abstract
Histopathological and ultrastructural investigations were conducted on 36 tench, Tinca tinca (L.), from Lake Trasimeno (Italy). The gills, intestine, liver, spleen, kidney and heart of 21 individuals were found to harbour an extensive infection of larvae of an unidentified digenean trematode. The eyes, gonads, swim bladder and muscles were uninfected. The parasites in each tissue type were embedded in a granulomatous proliferation of tissue, forming a reactive fibroconnective capsule around each larva. Most of the encysted larvae were metacercariae, in a degenerative state, but on occasion some cercariae were found. Many of the granulomas were either necrotic or had a calcified core. Within the granuloma of each, the occurrence of granulocytes, macrophages, rodlet cells and pigment-bearing macrophage aggregates was observed. Hearts bore the highest parasitic infection. Whilst the presence of metacercariae within the intestine was found positioned between the submucosa and muscle layers, metacercariae in the liver were commonly found encysted on its surface where the hepatocytes in close contact with the granuloma were observed to have electron-lucent vesicles within their cytoplasm. Metacercariae encysting adjacent to the cartilaginous rods of gill filaments were seen to elicit a proliferation of the cartilage from the perichondrium. Rodlet cells, neutrophils and mast cells were frequently observed in close proximity to, and within, infected gill capillaries. Given the degenerated state of most granulomas, a morphology-based identification of the enclosed digeneans was not possible.
Collapse
Affiliation(s)
- B S Dezfuli
- Department of Biology and Evolution, University of Ferrara, Ferrara, Italy.
| | | | | | | | | | | |
Collapse
|
24
|
Yashpal M, Kumari U, Mittal S, Mittal AK. Glycoproteins in the Buccal Epithelium of a Carp,Cirrhinus mrigala(Pisces, Cyprinidae): A Histochemical Profile. Anat Histol Embryol 2013; 43:116-32. [DOI: 10.1111/ahe.12055] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Accepted: 03/03/2013] [Indexed: 11/29/2022]
Affiliation(s)
- M. Yashpal
- Skin Physiology Laboratory; Centre of Advanced Study; Department of Zoology; Banaras Hindu University; Varanasi 221 005 Uttar Pradesh India
- Electron Microscope Facility; Department of Anatomy; Institute of Medical Sciences; Banaras Hindu University; Varanasi 221 005 Uttar Pradesh India
| | - U. Kumari
- Skin Physiology Laboratory; Centre of Advanced Study; Department of Zoology; Banaras Hindu University; Varanasi 221 005 Uttar Pradesh India
| | - S. Mittal
- Skin Physiology Laboratory; Centre of Advanced Study; Department of Zoology; Banaras Hindu University; Varanasi 221 005 Uttar Pradesh India
| | - A. K. Mittal
- Skin Physiology Laboratory; Centre of Advanced Study; Department of Zoology; Banaras Hindu University; Varanasi 221 005 Uttar Pradesh India
- Retired Professor of Zoology; Banaras Hindu University; 9 Mani Nagar, Kandawa, Near Chitaipur Crossing Varanasi 221 106 Uttar Pradesh India
| |
Collapse
|
25
|
Lafferty KD, Shaw JC. Comparing mechanisms of host manipulation across host and parasite taxa. J Exp Biol 2013; 216:56-66. [DOI: 10.1242/jeb.073668] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Summary
Parasites affect host behavior in several ways. They can alter activity, microhabitats or both. For trophically transmitted parasites (the focus of our study), decreased activity might impair the ability of hosts to respond to final-host predators, and increased activity and altered microhabitat choice might increase contact rates between hosts and final-host predators. In an analysis of trophically transmitted parasites, more parasite groups altered activity than altered microhabitat choice. Parasites that infected vertebrates were more likely to impair the host’s reaction to predators, whereas parasites that infected invertebrates were more likely to increase the host’s contact with predators. The site of infection might affect how parasites manipulate their hosts. For instance, parasites in the central nervous system seem particularly suited to manipulating host behavior. Manipulative parasites commonly occupy the body cavity, muscles and central nervous systems of their hosts. Acanthocephalans in the data set differed from other taxa in that they occurred exclusively in the body cavity of invertebrates. In addition, they were more likely to alter microhabitat choice than activity. Parasites in the body cavity (across parasite types) were more likely to be associated with increased host contact with predators. Parasites can manipulate the host through energetic drain, but most parasites use more sophisticated means. For instance, parasites target four physiological systems that shape behavior in both invertebrates and vertebrates: neural, endocrine, neuromodulatory and immunomodulatory. The interconnections between these systems make it difficult to isolate specific mechanisms of host behavioral manipulation.
Collapse
Affiliation(s)
- Kevin D. Lafferty
- Western Ecological Research Center, US Geological Survey, USA
- Marine Science Institute, University of California, Santa Barbara, CA 93106, USA
| | - Jenny C. Shaw
- Marine Science Institute, University of California, Santa Barbara, CA 93106, USA
| |
Collapse
|
26
|
DePasquale JA. Rodlet cells in epidermal explant cultures ofLepomis Macrochirus. ACTA ZOOL-STOCKHOLM 2012. [DOI: 10.1111/azo.12013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
27
|
DEZFULI BS, LUI A, GIARI L, CASTALDELLI G, SHINN AP, LORENZONI M. Innate immune defence mechanisms of tench,Tinca tinca(L.), naturally infected with the tapewormMonobothrium wageneri. Parasite Immunol 2012; 34:511-9. [DOI: 10.1111/j.1365-3024.2012.01373.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
|
28
|
Dezfuli BS, Giari L, Squerzanti S, Lui A, Lorenzoni M, Sakalli S, Shinn AP. Histological damage and inflammatory response elicited by Monobothrium wageneri (Cestoda) in the intestine of Tinca tinca (Cyprinidae). Parasit Vectors 2011; 4:225. [PMID: 22152408 PMCID: PMC3261215 DOI: 10.1186/1756-3305-4-225] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Accepted: 12/07/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Among the European cyprinids, tench, Tinca tinca (L.), and the pathological effects their cestodes may effect, have received very little or no attention. Most literature relating to Monobothrium wageneri Nybelin, 1922, a common intestinal cestode of tench, for example, has focused on aspects of its morphology rather than on aspects of the host-parasite interaction. RESULTS Immunopathological and ultrastructural studies were conducted on the intestines of 28 tench, collected from Lake Piediluco, of which 16 specimens harboured tight clusters of numerous M. wageneri attached to the intestinal wall. The infection was associated with the degeneration of the mucosal layer and the formation of raised inflammatory swelling surrounding the worms. At the site of infection, the number of granulocytes in the intestine of T. tinca was significantly higher than the number determined 1 cm away from the site of infection or the number found in uninfected fish. Using transmission electron microscopy, mast cells and neutrophils were frequently observed in close proximity to, and inside, the intestinal capillaries; often these cells were in contact with the cestode tegument. At the host-parasite interface, no secretion from the parasite's tegument was observed. Intense degranulation of the mast cells was seen within the submucosa and lamina muscularis, most noticeably at sites close to the tegument of the scolex. In some instances, rodlet cells were encountered in the submucosa. In histological sections, hyperplasia of the mucous cells, notably those giving an alcian blue positive reaction, were evident in the intestinal tissues close to the swelling surrounding the worms. Enhanced mucus secretion was recorded in the intestines of infected tench. CONCLUSIONS The pathological changes and the inflammatory cellular response induced by the caryophyllidean monozoic tapeworm M. wageneri within the intestinal tract of an Italian population of wild tench is reported for the first time.
Collapse
|
29
|
Dezfuli BS, Giari L, Lui A, Lorenzoni M, Noga EJ. Mast cell responses to Ergasilus (Copepoda), a gill ectoparasite of sea bream. FISH & SHELLFISH IMMUNOLOGY 2011; 30:1087-1094. [PMID: 21316458 DOI: 10.1016/j.fsi.2011.02.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Revised: 02/04/2011] [Accepted: 02/06/2011] [Indexed: 05/30/2023]
Abstract
Immunocytochemical, light microscopy and ultrastructural studies were conducted on gill of sea bream, Sparus aurata L., naturally parasitized with the important parasitic copepod Ergasilus sp. to assess pathology and cellular responses. Thirty-seven S. aurata were examined from a fish farm; 26 (70%) were parasitized, with infection intensity ranging from 3 to 55 parasites per fish. Hosts were divided into two groups, lightly infected fish (<15 parasites per fish) and heavily infected fish (>15 parasites per fish). In histological sections, the copepod encircled gill lamellae with its second antennae, compressed the epithelium, provoked hyperplasia and hemorrhage, occluded arteries and often caused lamellar disruption. Fusion of the secondary lamellae due to epithelial hyperplasia was common in all infected fish; heavily infected fish showed more intense branchial inflammation. In both healthy and infected fish, mast cells (MCs) were free within the connective tissue inside and outside the blood vessels of the primary lamellae and made close contact with vascular endothelial cells, mucous cells and rodlet cells (RCs). MCs were irregular in shape with a cytoplasm filled by numerous electron-dense, membrane-bound granules. Immunostaining of primary and secondary gill filaments with an antibody against the antimicrobial peptide (AMP) piscidin 3 (anti-piscidin 3 antibody, anti-HAGR) revealed a subpopulation of MCs that were positive. These MCs were more abundant in gills of heavily infected fish than in either lightly infected or uninfected fish (ANOVA, P<0.05). Our report documents the response of gill to ectoparasite infection and provides further evidence that mast cells and their AMPs may play a role in responding to branchial ectoparasite infections.
Collapse
Affiliation(s)
- Bahram S Dezfuli
- Department of Biology & Evolution, University of Ferrara, St. Borsari 46, 44123 Ferrara, Italy.
| | | | | | | | | |
Collapse
|
30
|
DEZFULI BS, CASTALDELLI G, BO T, LORENZONI M, GIARI L. Intestinal immune response of Silurus glanis and Barbus barbus naturally infected with Pomphorhynchus laevis (Acanthocephala). Parasite Immunol 2011; 33:116-23. [DOI: 10.1111/j.1365-3024.2010.01266.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
31
|
Raissy M, Ansari M, Moumeni M. Parasite Fauna of the Zagros Tooth-Carp, Aphanius vladykovi Coad, 1988 (Osteichthyes: Cyprinodontidae), in Gandoman Lagoon. COMP PARASITOL 2011. [DOI: 10.1654/4474.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
32
|
Matisz CE, Goater CP. Migration, site selection, and development of Ornithodiplostomum sp. metacercariae (Digenea: Strigeoidea) in fathead minnows (Pimephales promelas). Int J Parasitol 2010; 40:1489-96. [DOI: 10.1016/j.ijpara.2010.04.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2010] [Revised: 04/28/2010] [Accepted: 04/30/2010] [Indexed: 11/16/2022]
|