Review of research on hookworms (Uncinaria lucasi Stiles, 1901) in northern fur seals (Callorhinus ursinus Linnaeus, 1758)

Lyons, E. T.; Spraker, Terry R.; Long, Robert L. De; Ioniţă, Mariana; Melin, Sharon R.; Nadler, Steven A.; Tolliver, S. C.

doi:10.1007/s00436-011-2420-6

Cited by 24 publications

(36 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The scarce literature on the effect of hookworms on wildlife host growth rates is probably related to logistic limitations to perform experimental studies in most free-ranging populations, an approach that facilitates measurement and comparison of growth rates in infected and uninfected animals. Additionally, hookworm infection is a primarily neonatal disease in pinnipeds, because infective stage 3 larvae only develop into adults when ingested by a pup with its mother's milk (Lyons et al., 2011a, Lyons et al., 2011b Seguel et al., 2017), therefore, retarded growth is a significant component of hookworm disease in these mammalian species (Chilvers et al., 2009, Delong et al., 2009 Seguel et al., 2017). …”

Section: The Impact Of Hookworm Infections On Wildlifementioning

confidence: 99%

“…When hookworms feed on the intestinal mucosa they leave small 1–2 mm erosions on the mucosal surface that sometimes can be observed grossly, as is the case of Coyote pups infected with low numbers of A. caninum (Pence et al., 1988), California sea lions, South American fur seals, New Zealand sea lions, and Northern fur seals infected with Uncinaria sp hookworms (Spraker et al., 2007, Lyons et al., 2011a, Lyons et al., 2011b, Seguel et al., 2017). The chronic bleeding of these intestinal wounds and accompanying inflammation elicited by the disruption of the mucosal barrier lead to different degrees of hemorrhagic enteritis, a common consequence of A. caninum infections in coyotes (Radomsky, 1989), A. pluridentatum in young cougars, Uncinaria sp.…”

Section: The Impact Of Hookworm Infections On Wildlifementioning

confidence: 99%

See 1 more Smart Citation

The diversity and impact of hookworm infections in wildlife

Seguel

Gottdenker

2017

International Journal for Parasitology: Parasites and Wildlife

View full text Add to dashboard Cite

Hookworms are blood-feeding nematodes that parasitize the alimentary system of mammals. Despite their high pathogenic potential, little is known about their diversity and impact in wildlife populations. We conducted a systematic review of the literature on hookworm infections of wildlife and analyzed 218 studies qualitative and quantitatively. At least 68 hookworm species have been described in 9 orders, 24 families, and 111 species of wild mammals. Black bears, red foxes, and bobcats harbored the highest diversity of hookworm species and Ancylostoma pluridentatum, A. tubaeforme, Uncinaria stenocephala and Necator americanus were the hookworm species with the highest host diversity index. Hookworm infections cause anemia, retarded growth, tissue damage, inflammation and significant mortality in several wildlife species. Anemia has been documented more commonly in canids, felids and otariids, and retarded growth only in otariids. Population- level mortality has been documented through controlled studies only in canines and eared seals although sporadic mortality has been noticed in felines, bears and elephants. The main driver of hookworm pathogenic effects was the hookworm biomass in a population, measured as prevalence, mean burden and hookworm size (length). Many studies recorded significant differences in prevalence and mean intensity among regions related to contrasts in local humidity, temperature, and host population density. These findings, plus the ability of hookworms to perpetuate in different host species, create a dynamic scenario where changes in climate and the domestic animal-human-wildlife interface will potentially affect the dynamics and consequences of hookworm infections in wildlife.

show abstract

Section: The Impact Of Hookworm Infections On Wildlifementioning

confidence: 99%

Section: The Impact Of Hookworm Infections On Wildlifementioning

confidence: 99%

The diversity and impact of hookworm infections in wildlife

Seguel

Gottdenker

2017

International Journal for Parasitology: Parasites and Wildlife

View full text Add to dashboard Cite

show abstract

“…Young animals such as northern fur seals (Callorhinus ursinus) may be affected by hookworm (Uncinaria spp.) which can cause anemia (Lyons et al 2000). These animals are prone to hypoxemia and vascular compromise.…”

Section: Netsmentioning

confidence: 99%

Otariid Seals

Haulena¹

2014

Zoo Animal and Wildlife Immobilization and Anesthesia

View full text Add to dashboard Cite

“…However, currently on these islands, hookworms are almost extinct from the parasite fauna of NFSs which have had a tremendous decrease in number the last several decades (DeLong, 2007;Lyons et al, 2011Lyons et al, , 2014. It is of interest that in contrast to NES, hookworms have been found in southern elephant seals (Johnston & Mawson, 1945;. Southern elephant seals were exploited but the population apparently was not reduced to numbers as low as NESs.…”

Section: Resultsmentioning

confidence: 99%

“…There are 34 species of pinnipeds (Suborder Pinnipedia Illiger, 1811) assigned to three families of the mammalian order Carnivora Bowdich, 1821: Otariidae Gray, 1825, Phocidae Gray, 1821 and Odobenidae Allen, 1880 (Jefferson et al 1993;Higdon et al 2007). Hookworms from the genus Uncinaria Frölich, 1789 have been reported in 15 pinniped species -12 otariids (six species of fur seals, and six species of sea lions) and three phocids (Lyons et al, 2011;Nadler et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Parasitological examination of northern elephant seal (Mirounga angustirostris) pups for presence of hookworms (Uncinariaspp.) on San Miguel Island, California

et al. 2016

View full text Add to dashboard Cite

SummaryNecropsy and extensive parasitological examination of dead northern elephant seal (NES) pups was done on San Miguel Island, California, in February, 2015. The main interest in the current study was to determine if hookworms were present in NESs on San Miguel Island where two hookworm species of the genus Uncinaria are known to be present -Uncinaria lyonsi in California sea lions and Uncinaria lucasi in northern fur seals. Hookworms were not detected in any of the NESs examined: stomachs or intestines of 16 pups, blubber of 13 pups and blubber of one bull. The results obtained in the present study of NESs on San Miguel Island plus similar fi nding on Año Nuevo State Reserve and The Marine Mammal Center provide strong indication that NES are not appropriate hosts for Uncinaria spp. Hookworm free-living third stage larvae, developed from eggs of California sea lions and northern fur seals, were recovered from sand. It seems that at this time, further search for hookworms in NESs would be nonproductive.

show abstract

Review of research on hookworms (Uncinaria lucasi Stiles, 1901) in northern fur seals (Callorhinus ursinus Linnaeus, 1758)

Cited by 24 publications

References 31 publications

The diversity and impact of hookworm infections in wildlife

The diversity and impact of hookworm infections in wildlife

Otariid Seals

Parasitological examination of northern elephant seal (Mirounga angustirostris) pups for presence of hookworms (Uncinariaspp.) on San Miguel Island, California

Contact Info

Product

Resources

About