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Cortes MA, Bert W, Couvreur M, De Waele D, Singh PR. Nematodes associated with terrestrial gastropod molluscs in Belgium and additional characterisation of Pellioditis californica and P. hermaphrodita. J Helminthol 2024; 98:e27. [PMID: 38509853 DOI: 10.1017/s0022149x2400004x] [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: 03/22/2024]
Abstract
A survey for slug- and snail-associated nematodes was conducted in forests, parks, botanical gardens, and nature reserves at 13 localities in Belgium to uncover more diversity of gastropod mollusc-associated nematodes and to characterise Pellioditis populations found in the country. A total of 319 slugs and snails belonging to nine species were examined. Arion vulgaris was the most commonly found mollusc species in this study (eight locations), and 19.4% of the examined mollusc specimens were found infected by nematodes. The highest prevalence of nematodes was observed in Cornu aspersum (60%) followed by A. vulgaris (34.8%), Limax maximus (28.6%), and Cepaea sp. (20%). Eleven nematode species belonging to eight families were isolated and identified from the mollusc hosts including Alloionema appendiculatum, Angiostoma dentiferum, A. gandavense, Angiostrongylus vasorum, Cosmocerca longicauda, Panagrolaimus cf. subelongatus, Pellioditis californica, P. hermaphrodita, Rhabditis sp., Tetrameres cf. fissispina, and Troglostrongylus cf. brevior.Pellioditis was the most commonly found nematode genus (at nine localities) and C. longicauda and P. californica were reported in Belgium for the first time. Co-infections of more than one nematode species were observed in eight (2.5%) molluscs specimens. Most co-infections consisted of two nematode species. In one A. vulgaris specimen, a co-infection of three nematode species (A. vasorum, P. hermaphrodita, and Tetrameres cf. fissispina) was observed. Four ex vivo cultures of P. californica and six ex vivo cultures of P. hermaphrodita were established from single hermaphrodites, and both species were described based on light microscopy, scanning electron microscopy, and morphometric, morphological, and molecular data.
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Affiliation(s)
- M A Cortes
- Nematology Research Unit, Department of Biology, Ghent University, K.L. Ledeganckstraat 35, 9000Ghent, Belgium
- Department of Veterinary Paraclinical Sciences, College of Veterinary Medicine, Visayas State University, Visca, Baybay City, Leyte, Philippines
| | - W Bert
- Nematology Research Unit, Department of Biology, Ghent University, K.L. Ledeganckstraat 35, 9000Ghent, Belgium
| | - M Couvreur
- Nematology Research Unit, Department of Biology, Ghent University, K.L. Ledeganckstraat 35, 9000Ghent, Belgium
| | - D De Waele
- Unit for Environmental Sciences and Management, North-West University, Private Bag X6001, Potchefstroom, South Africa
- Laboratory of Tropical Crop Improvement, Department of Biosystems, Faculty of Bioscience Engineering, University of Leuven, Willem de Croylaan 42, 3001Heverlee, Belgium
| | - P R Singh
- Department of Entomology and Nematology, Fort Lauderdale Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, 3205 College Ave., Davie, FL33314-7719, USA
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Lambrecht E, Baré J, Van Damme I, Bert W, Sabbe K, Houf K. Behavior of Yersinia enterocolitica in the presence of the bacterivorous Acanthamoeba castellanii. Appl Environ Microbiol 2013; 79:6407-13. [PMID: 23934496 PMCID: PMC3811209 DOI: 10.1128/aem.01915-13] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [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: 06/12/2013] [Accepted: 08/06/2013] [Indexed: 12/20/2022] Open
Abstract
Free-living protozoa play an important role in the ecology and epidemiology of human-pathogenic bacteria. In the present study, the interaction between Yersinia enterocolitica, an important food-borne pathogen, and the free-living amoeba Acanthamoeba castellanii was studied. Several cocultivation assays were set up to assess the resistance of Y. enterocolitica to A. castellanii predation and the impact of environmental factors and bacterial strain-specific characteristics. Results showed that all Y. enterocolitica strains persist in association with A. castellanii for at least 14 days, and associations with A. castellanii enhanced survival of Yersinia under nutrient-rich conditions at 25°C and under nutrient-poor conditions at 37°C. Amoebae cultivated in the supernatant of one Yersinia strain showed temperature- and time-dependent permeabilization. Intraprotozoan survival of Y. enterocolitica depended on nutrient availability and temperature, with up to 2.8 log CFU/ml bacteria displaying intracellular survival at 7°C for at least 4 days in nutrient-rich medium. Transmission electron microscopy was performed to locate the Yersinia cells inside the amoebae. As Yersinia and Acanthamoeba share similar ecological niches, this interaction identifies a role of free-living protozoa in the ecology and epidemiology of Y. enterocolitica.
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Affiliation(s)
- E. Lambrecht
- Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - J. Baré
- Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - I. Van Damme
- Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - W. Bert
- Nematology Unit, Department of Biology, Ghent University, Ghent, Belgium
| | - K. Sabbe
- Laboratory of Protistology and Aquatic Ecology, Department of Biology, Ghent University, Ghent, Belgium
| | - K. Houf
- Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
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Borgonie G, García-Moyano A, Litthauer D, Bert W, Bester A, van Heerden E, Möller C, Erasmus M, Onstott TC. Nematoda from the terrestrial deep subsurface of South Africa. Nature 2011; 474:79-82. [DOI: 10.1038/nature09974] [Citation(s) in RCA: 156] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Accepted: 03/01/2011] [Indexed: 11/09/2022]
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Bert W, Claeys M, Borgonie G. The comparative cellular architecture of the female gonoduct among tylenchoidea (nematoda: tylenchina). J Nematol 2006; 38:362-375. [PMID: 19259542 PMCID: PMC2586704] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2006] [Indexed: 05/27/2023] Open
Abstract
The cellular architecture of the female gonoduct of 68 nematode populations representing 42 species belonging to Tylenchidae, Belonolaimidae, Hoplolaimidae and Meloinema is shown to have an overall similarity in cellular gonoduct structure. The oviduct consists of two rows of four cells; the spermatheca is comprised of 10 to 20 cells, and the uterus cells, except in the case of Psilenchus, are arranged in four (Tylenchidae) or three (Belonolaimidae, Hoplolaimidae and Meloinema) regular rows. Although the genus Meloinema is classified within Meloidogynidae, its spermatheca is clearly hoplolaimid-like and lacks the spherical shape with lobe-like protruding cells typical of Meloidogyne. Detailed morphology of expelled gonoducts may provide a valuable character set in phylogenetic analysis, and the cellular morphology of the spermatheca appears to be a distinguishing feature at species level, especially in the genera Tylenchus and Geocenamus. Ultrastructural data on the oviduct-spermatheca region of Meloidogyne incognita complement light-microscopic (LM) results. The combination of LM of expelled organs and transmission electron microscopy (TEM) on selected sections is put forward as a powerful tool to combine three-dimensional knowledge with ultrastructural detail.
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Affiliation(s)
- W Bert
- Nematology Unit, Department of Biology, Ghent University, Belgium
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Elbadri GA, Bert W, Geraert E. Tylenchida associated with different crops in Sennar State (Sudan). Meded Rijksuniv Gent Fak Landbouwkd Toegep Biol Wet 2003; 66:633-43. [PMID: 12425088] [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] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
Abstract
A study was done on the taxonomy and morphology of plant parasitic nematodes (Tylenchida) found in Sennar State (Sudan). Sixty samples of different crops were collected in the sugarcane area. Thirty samples originated from soil around the roots of Saccharum officinarum (sugarcane) from different ratoons and thirty samples were collected from other crops (Mangifera indica; Citrus limon; Citrus aurantifolia; Citrus paradisi; Citrus sinensis, Phoenix dactylifera, Musa sapentium; Cassia italica, Capsicum annuum, Sorghum bicolor, Sorghum sudanensis, Gossypium barbadense, Ficus nitida, Khaya senegalensis, Eucalyptus microtheca, Acacia nilotica, Acacia seyal, Azardichta indica, Cajanus cajana, Caltropsis spp. and Liguster ovalifolium). Seven species belonging to seven different genera of Tylenchida were identified: Paratrophurus lobatus, Scutellonema clathricaudatum, Hoplolaimus aegypti and Filenchus cylindricus. Helicotylenchus plumariae, Pratylenchus thornei and Malenchus andrassyi are new records for Sudan. These seven species were compared with the descriptions given in the literature and differences and variations were discussed. Additional morphological data were described by means of SEM microscopy.
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Affiliation(s)
- G A Elbadri
- Agricultural Research Corporation, Wad Medani, P. O. 126, Sudan
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