SYSTEMATIC REVIEW OF THE HELIGMOSOMIDAE (NEMATODA: TRICHOSTRONGYLINA) IN NORTH AMERICA
Notice bibliographique
Résumé
Heligmosomidae are gastrointestinal nematodes of rodents; members of this family are distributed through the Holarctic and Nearctic regions. Traditionally, the classification of Heligmosomidae was built based on basic morphological characteristics of the cuticle and sexual characteristics of the males. To this date, there is no revision that summarizes the geographic distribution and diversity of this group across North America. Thus, the primary goal of this dissertation was to produce a monograph of Heligmosomidae in the continent that helps in the understanding of the geographical distribution of the members of the family using museum records and peer-reviewed publications. To achieve this, holdings of scientific museums were used to examine the morphological variability, reconstruct phylogeny, establish species limits and identify, name and describe three new species. Thus, this compendium is based on the examination of 209 lots representing 18 species.Re-examination of the available holotypes gives scientists the ability to characterize intra- and interspecific character variability. By examining the holotype of a species, one is able to compare and evaluate structures that would have been ignored in the original description. As a consequence, I was able to characterize the cuticular ornamentation of two nematode species described over 100 years ago. Further, these efforts supported the proposal of three new species, two of Citellinema and one of Heligmosomoides. The new species of Heligmosomoides Hall, 1916 is proposed for nematodes collected from Peromyscus maniculatus (Deer Mouse) in western Canada; this species of parasite is diagnosed by the presence of two internal bursal membranes and number of ridges in the synlophe. The description of the species of Citellinema is based on the examination of materials collected in Alaska and western Canada. These organisms can be diagnosed based on the structure of their male genitalia and cuticular ornamentation. An assessment of the six recognized species in the genus is offered as well as a discussion to reinstate two of these species. I offer a brief characterization of specimens of Ohbayashinema and Heligmosomum since sequences from North America and Russia are available for analyses. The reconstruction based on 28S shows that Citellinema, Heligmosomoides, Heligmosomum, and Ohbayashinema are a monophyletic group, yet the topology suggests that Heligmosomoides is not a natural group. This topology is supported by the analysis of one nuclear and three mitochondrial genes. The genetic distance among these taxa is used as ancillary evidence to support the proposal of the new species.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,001 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».