{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,17]],"date-time":"2026-07-17T07:08:30Z","timestamp":1784272110296,"version":"3.55.0"},"reference-count":36,"publisher":"Cambridge University Press (CUP)","license":[{"start":{"date-parts":[[2026,4,20]],"date-time":"2026-04-20T00:00:00Z","timestamp":1776643200000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["cambridge.org"],"crossmark-restriction":true},"short-container-title":["Parasitology"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Despite several recent studies, the helminth diversity of small mammals in South Africa remains poorly understood. During a survey conducted from 2023 to 2025 on the helminth assemblages of rodents in the Western Cape Province, South Africa, nematodes were collected from the stomach of a female\n                    <jats:italic>Micaelamys namaquensis<\/jats:italic>\n                    in the Nama-Karoo biome. For one of the nematode species identified, morphological characters, based on light and electron microscopy, corresponded to the genus\n                    <jats:italic>Gastronodus<\/jats:italic>\n                    : a short, heavily sclerotized buccal capsule armed with 6 teeth, the presence of 3 pairs of pedunculate postcloacal papillae as well as dissimilar and unequal spicules in males and a vulva situated at the level of the glandular oesophagus in females. The presence of 3, rather than 2, pairs of postcloacal pedunculate papillae distinguishes our specimens from the closely related genera\n                    <jats:italic>Cylicospirura, Skrjabinocercina<\/jats:italic>\n                    and\n                    <jats:italic>Spirocerca<\/jats:italic>\n                    . Furthermore, the presence of 4\u20135 vs 6\u20137 pairs of pedunculate precloacal papillae distinguishes them from their single currently recognized congener,\n                    <jats:italic>Gastronodus strasseni<\/jats:italic>\n                    sampled from\n                    <jats:italic>Suncus murinus<\/jats:italic>\n                    in India. Based on these results, we here describe\n                    <jats:italic>Gastronodus karooensis<\/jats:italic>\n                    n. sp. Phylogenetic analyses of the mtDNA\n                    <jats:italic>cox1<\/jats:italic>\n                    gene suggest some affiliation with the genus\n                    <jats:italic>Spirocerca<\/jats:italic>\n                    and provide some support for their placement in the Spirocercidae. This is the first record of the genus\n                    <jats:italic>Gastronodus<\/jats:italic>\n                    in Africa. The description of a new species of Spirocercidae from\n                    <jats:italic>M. namaquenis<\/jats:italic>\n                    highlights the need for further studies as the nematode diversity in wild hosts in South Africa is currently underestimated.\n                  <\/jats:p>","DOI":"10.1017\/s0031182026102030","type":"journal-article","created":{"date-parts":[[2026,4,20]],"date-time":"2026-04-20T05:26:28Z","timestamp":1776662788000},"page":"1-10","update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":0,"title":["A new species of\n                    <i>Gastronodus<\/i>\n                    Singh, 1934 (Nematoda: Spirocercidae) from\n                    <i>Micaelamys namaquensis<\/i>\n                    (A. Smith, 1834) (Rodentia: Muridae) in the Nama-Karoo, South Africa"],"prefix":"10.1017","author":[{"given":"Ernst","family":"Schlemmer","sequence":"first","affiliation":[{"name":"Stellenbosch University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6650-1201","authenticated-orcid":false,"given":"Kerstin","family":"Junker","sequence":"additional","affiliation":[{"name":"Agricultural Research Council-Onderstepoort Veterinary Institute"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yasen","family":"Mutafchiev","sequence":"additional","affiliation":[{"name":"Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6836-069X","authenticated-orcid":false,"given":"Conrad A.","family":"Matthee","sequence":"additional","affiliation":[{"name":"Stellenbosch University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7289-6262","authenticated-orcid":false,"given":"Sonja","family":"Matthee","sequence":"additional","affiliation":[{"name":"Stellenbosch University"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2026,4,20]]},"reference":[{"key":"S0031182026102030_ref10","doi-asserted-by":"publisher","DOI":"10.1128\/spectrum.03067-24"},{"key":"S0031182026102030_ref4","first-page":"129","article-title":"Sur la syst\u00e9matique des n\u00e9matodes proches de Spirocerca lupi (Rud., 1809)","volume":"1","author":"Chabaud","year":"1959","journal-title":"Parassitologia"},{"key":"S0031182026102030_ref3","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182000007149"},{"key":"S0031182026102030_ref12","doi-asserted-by":"publisher","DOI":"10.1007\/s12639-018-1009-8"},{"key":"S0031182026102030_ref15","doi-asserted-by":"publisher","DOI":"10.1017\/S0022149X17000761"},{"key":"S0031182026102030_ref8","doi-asserted-by":"publisher","DOI":"10.7589\/0090-3558-47.1.140"},{"key":"S0031182026102030_ref23","unstructured":"Rambaut, A (2016) FigTree v1.4.3. https:\/\/tree.bio.ed.ac.uk\/software\/figtree\/ (accessed 9 May 2025)."},{"key":"S0031182026102030_ref5","first-page":"361","volume-title":"CIH Keys to the Nematode Parasites of Vertebrates. 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