Comparative Morphology of Ancylostoma tubaeforme (Zeder, 1800) and Ancylostoma caninum (Ercolani, 1859)

Burrows, Robert B.

doi:10.2307/3275261

Cited by 40 publications

(17 citation statements)

References 3 publications

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“…The distribution data of U. stenocephala and Ancylostoma caninum did not differ significantly, indicating a compe-tence for the ecological niche in the community. The higher prevalence and abundance of U. stenocephala is surprising, since A. caninum has a higher specificity regarding canids (Fitzsimmons 1961, Burrows 1962, Okoshi and Murata 1967, 1968. This feature has also been reported in other countries with a climate similar to that of Spain; e.g., Guberti et al (1993) suggested antagonism between the two ancylostomatid species in wolves from Italy.…”

Section: Core Speciesmentioning

confidence: 84%

Ecological analyses of the intestinal helminth communities of the wolf, Canis lupus, in Spain

Segovia¹,

Guerrero²,

Torres³

et al. 2003

FOLIA PARASIT

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Abstract. This work describes the ecological characteristics of the intestinal helminth communities of 50 wolves (Canis lupus L.) from Spain. The species found were classified into three groups according to prevalence, intensity and intestinal distribution. Taenia hydatigena Pallas, 1766 and Uncinaria stenocephala (Railliet, 1884) are the core species of the community. Taenia multiceps (Leske, 1780) is a secondary species. The rest of the species, Alaria alata (Goeze, 1782), Taenia serialis (Gervais, 1847), Taenia pisiformis (Bloch, 1780), Dipylidium caninum (Linnaeus, 1758), Mesocestoides sp. aff. litteratus, Toxocara canis (Werner, 1782), Toxascaris leonina (von Linstow, 1902), Ancylostoma caninum (Ercolani, 1859) and Trichuris vulpis (Froelich, 1789), behave as satellite species. The linear intestinal distribution of all helminth species was analysed. The location of most species can be considered predictable, especially for core and secondary species. The analysis of interspecific relationships between infracommunities shows that negative associations are more numerous than positive associations. The role of A. caninum in the community is compared with that of U. stenocephala.

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Section: Core Speciesmentioning

confidence: 84%

Ecological analyses of the intestinal helminth communities of the wolf, Canis lupus, in Spain

Segovia¹,

Guerrero²,

Torres³

et al. 2003

FOLIA PARASIT

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“…: 1, dorsoventral view of anterior region; 2, lateral view of anterior region; 3, lateral view of female vulval region; 4, lateral view of female caudal region; 5, dorsal view of male caudal region; 6, egg. b Ten Ancylostoma species for comparison of dorsal rays: 1, A. taxideae [10]; 2, A. duodenale [9]; 3, A. paraduodenale [6]; 4, A. caninum [58]; 5, A. malayanum [7]; 6, A. kusimaense [9]; 7, A. ceylanicum [9, 11]; 8, A. braziliense [9, 11]; 9, A. tubaeforme [58]; 10, A. ailuropodae n. sp …”

Section: Resultsmentioning

confidence: 99%

Ancylostoma ailuropodae n. sp. (Nematoda: Ancylostomatidae), a new hookworm parasite isolated from wild giant pandas in Southwest China

et al. 2017

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BackgroundHookworms belonging to the genus Ancylostoma (Dubini, 1843) cause ancylostomiasis, a disease of considerable concern in humans and domestic and wild animals. Molecular and epidemiological data support evidence for the zoonotic potential among species of Ancylostoma where transmission to humans is facilitated by rapid urbanization and increased human-wildlife interactions. It is important to assess and describe these potential zoonotic parasite species in wildlife, especially in hosts that have physiological similarities to humans and share their habitat. Moreover, defining species diversity within parasite groups that can circulate among free-ranging host species and humans also provides a pathway to understanding the distribution of infection and disease. In this study, we describe a previously unrecognized species of hookworm in the genus Ancylostoma in the giant panda, including criteria for morphological and molecular characterization.MethodsThe hookworm specimens were obtained from a wild giant panda that died in the Fengtongzai Natural Reserve in Sichuan Province of China in November 2013. They were microscopically examined and then genetically analyzed by sequencing the nuclear internal transcribed spacer (ITS, ITS1-5.8S-ITS2) and mitochondrial cytochrome c oxidase subunit 1 (cox1) genes in two representative specimens (one female and one male, FTZ1 and FTZ2, respectively).Results Ancylostoma ailuropodae n. sp. is proposed for these hookworms. Morphologically the hookworm specimens differ from other congeneric species primarily based on the structure of the buccal capsule in males and females, characterized by 2 pairs of ventrolateral and 2 pairs of dorsolateral teeth; males differ in the structure and shape of the copulatory bursa, where the dorsal ray possesses 2 digitations. Pairwise nuclear and mitochondrial DNA comparisons, genetic distance analysis, and phylogenetic data strongly indicate that A. ailuropodae from giant pandas is a separate species which shared a most recent common ancestor with A. ceylanicum Looss, 1911 in the genus Ancylostoma (family Ancylostomatidae).Conclusion Ancylostoma ailuropodae n. sp. is the fourth species of hookworm described from the Ursidae and the fifteenth species assigned to the genus Ancylostoma. A sister-species association with A. ceylanicum and phylogenetic distinctiveness from the monophyletic Uncinaria Frölich, 1789 among ursids and other carnivorans indicate a history of host colonization in the evolutionary radiation among ancylostomatid hookworms. Further, phylogenetic relationships among bears and a history of ecological and geographical isolation for giant pandas may be consistent with two independent events of host colonization in the diversification of Ancylostoma among ursid hosts. A history for host colonization within this assemblage and the relationship for A. ailuropodae n. sp. demonstrate the potential of this species as a zoonotic parasite and as a possible threat to human health. The cumulative morphological, molecular and phylogenetic ...

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“…For nearly 100 years, the common hookworm of both dogs and cats was referred as Ancylostoma caninum [32]. Later then, some authors stated that it was difficult to infect dogs with larvae from cats, and vice versa [32–36].…”

Section: Discussionmentioning

confidence: 99%

Molecular Identification ofAncylostoma caninumIsolated from Cats in Southern China Based on Complete ITS Sequence

Liu

Gong

Alsarakibi

et al. 2013

BioMed Research International

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Ancylostoma caninum is a blood-feeding parasitic intestinal nematode which infects dogs, cats, and other mammals throughout the world. A highly sensitive and species-specific PCR-RFLP technique was utilised to detect the prevalence of A. caninum in cats in Guangzhou, southern China. Of the 102 fecal samples examined, the prevalence of A. caninum in cats was 95.1% and 83.3% using PCR-RFLP and microscopy, respectively. Among them, the prevalence of single hookworm infection with A. caninum was 54.90%, while mixed infections with both A. caninum and A. ceylanicum were 40.20%. Comparative analysis of three complete ITS sequences obtained from cat-derived A. caninum showed the same length (738 bp) as that of dog-derived A. caninum. However, the sequence variation range was 98.6%–100%, where only one cat isolate (M63) showed 100% sequence similarity in comparison with two dog-derived A. caninum isolates (AM850106, EU159416) in the same studied area. The phylogenetic tree revealed A. caninum derived from both cats and dogs in single cluster. Results suggest that cats could be the main host of A. caninum in China, which may cause cross-infection between dogs and cats in the same area.

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Comparative Morphology of Ancylostoma tubaeforme (Zeder, 1800) and Ancylostoma caninum (Ercolani, 1859)

Cited by 40 publications

References 3 publications

Ecological analyses of the intestinal helminth communities of the wolf, Canis lupus, in Spain

Ecological analyses of the intestinal helminth communities of the wolf, Canis lupus, in Spain

Ancylostoma ailuropodae n. sp. (Nematoda: Ancylostomatidae), a new hookworm parasite isolated from wild giant pandas in Southwest China

Molecular Identification ofAncylostoma caninumIsolated from Cats in Southern China Based on Complete ITS Sequence

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