Age Distribution and Seasonal Dynamics of Abomasal Helminths in Wild Red Deer from Central Spain

Santín‐Durán, Mónica; Alunda, José María; Hoberg, Eric P.; Fuente, Concepción de la

doi:10.1645/ge-1109.1

Cited by 23 publications

(27 citation statements)

References 20 publications

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“…It was noteworthy that females were less often infected than males for each parasite and age class. This pattern is supported by previous studies (reviewed by Zuk and McKean 1996;Santín-Durán et al 2008). Body mass negatively influenced the prevalence of both parasites in males, whereas population density rather than body mass influenced the prevalence of both parasites in females.…”

Section: Discussionsupporting

confidence: 88%

“…First, independently of sex, parasite group and metric of parasitism considered, adults are less often parasitized and carry lower parasite burdens than fawns and old individuals. This pattern has been regularly reported in other species (Santín-Durán et al 2008 for Ostertagia drodzil/Ostertagia ryjikovi on red deer (Cervus elaphus); Hayward et al 2009 for gastro-intestinal helminth on Soay sheep). Moreover, parasitism of adults was remarkably constant over time compared to the parasitism of fawns and old individuals.…”

Section: Discussionsupporting

confidence: 81%

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Population density and phenotypic attributes influence the level of nematode parasitism in roe deer

et al. 2011

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The impact of parasites on population dynamics is well documented, but less is known on how host population density affects parasite spread. This relationship is difficult to assess because of confounding effects of social structure, population density, and environmental conditions that lead to biased among-population comparisons. Here, we analyzed the infestation by two groups of nematodes (gastro-intestinal (GI) strongyles and Trichuris) in the roe deer (Capreolus capreolus) population of Trois Fontaines (France) between 1997 and 2007. During this period, we experimentally manipulated population density through changes in removals. Using measures collected on 297 individuals, we quantified the impact of density on parasite spread after taking into account possible influences of date, age, sex, body mass, and weather conditions. The prevalence and abundance of eggs of both parasites in females were positively related to roe deer density, except Trichuris in adult females. We also found a negative relationship between parasitism and body mass, and strong age and sex-dependent patterns of parasitism. Prime-age adults were less often parasitized and had lower fecal egg counts than fawns or old individuals, and males were more heavily and more often infected than females. Trichuris parasites were not affected by weather, whereas GI strongyles were less present after dry and hot summers. In the range of observed densities, the observed effect of density likely involves a variation of the exposure rate, as opposed to variation in host susceptibility.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionsupporting

confidence: 81%

Population density and phenotypic attributes influence the level of nematode parasitism in roe deer

et al. 2011

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“…However, high and low parasite abundance may be associated with different seasons depending on the parasite and host species studied. For instance, several trematode populations of the snail Helisoma anceps reach their highest prevalence during the spring (Negovetich and Esch 2007), whereas nematode populations of the wild Red deer Cervus elaphus reach their highest prevalence and abundance during the winter months (Santín-Durán et al 2008). Although seasonal variations in parasite populations have been associated, generally, with environmental conditions, few studies have effectively identified specific factors as affecting the dynamics of parasite populations (Bauer and Karimov 2006).…”

Section: Introductionmentioning

confidence: 99%

Monthly variation in the parasite communities of the intertidal fish Scartichthys viridis (Blenniidae) from central Chile: are there seasonal patterns?

Muñoz

Randhawa

2011

Parasitol Res

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Monthly variation in parasite populations and communities, from the blenniid fish Scartichthys viridis, were assessed during two consecutive years in order to examine monthly and seasonal temporal patterns. A total of 969 S. viridis was collected from September 2006 to August 2008 in central Chile. Sample size and fish total length (TL) varied among months. The S. viridis parasite community included 17 parasite taxa, of which five species were present throughout the year: a leech (Piscicolidae gen. sp.), two copepods (Lepeophtheirus zbigniewi and Colobomatus sp.), a monogenean (Microcotyle sp.) and a trematode (Lecithasteridae gen. sp.). The parasite prevalence, abundance and biovolume varied among months. More precisely, the leech and the copepod Colobomatus sp. were the most prevalent and abundant parasites, reaching their maxima between November and January (austral spring-summer). The parasite communities also showed seasonal patterns; prevalence, abundance and species richness of parasites were higher between October and January (spring-summer) than between March and May (autumn-winter). The population and community descriptors of parasites were significantly correlated with fish TL. Consequently, the variation in parasite populations and communities was associated with fish growth throughout the year. Postlarval settlement of S. viridis, in the intertidal rocky pools, occurs in autumn, with fish reaching larger body size in summer.

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“…These nematodes are economically most significant because it causes insidious loss of production, weight loss and even mortality in lambs (Fentahun and Luke, 2012) and important emerging anthelmintic resistance parasite (Mortensen et al, 2003). These parasites are more prevalent in the tropical and warmer temperate countries, particularly where there is good rainfall in the summer season (Sissay et al, 2007;Santín-Durán et al, 2008;Qamar et al, 2009). The acute and debilitating form of disease is most commonly seen in young animals while adult animals are resistant to infection (Onyenwe et al, 2005;Santín-Durán et al, 2008).…”

mentioning

confidence: 99%

“…These parasites are more prevalent in the tropical and warmer temperate countries, particularly where there is good rainfall in the summer season (Sissay et al, 2007;Santín-Durán et al, 2008;Qamar et al, 2009). The acute and debilitating form of disease is most commonly seen in young animals while adult animals are resistant to infection (Onyenwe et al, 2005;Santín-Durán et al, 2008). The most common clinical signs are failure to thrive, weight loss, anemia, hypoproteinemia, sub-mandibular edema (bottle jaw), ascites, diarrhea, lethargy and death (Kelkele et al, 2012;Tehrani et al, 2012).…”

mentioning

confidence: 99%

Histopathological and Parasitological Study of Blood-Sucking Haemonchus contortus Infection in Sheep

Saminathan¹

2015

Adv. Anim. Vet. Sci.

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Age Distribution and Seasonal Dynamics of Abomasal Helminths in Wild Red Deer from Central Spain

Cited by 23 publications

References 20 publications

Population density and phenotypic attributes influence the level of nematode parasitism in roe deer

Population density and phenotypic attributes influence the level of nematode parasitism in roe deer

Monthly variation in the parasite communities of the intertidal fish Scartichthys viridis (Blenniidae) from central Chile: are there seasonal patterns?

Histopathological and Parasitological Study of Blood-Sucking Haemonchus contortus Infection in Sheep

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