Larval Survival of <i>Anocentor nitens</i> Under Simulated Natural Conditions

Díaz, G; Vega, R. de la

doi:10.1111/j.1749-6632.2000.tb05306.x

Cited by 4 publications

(2 citation statements)

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“…The success or failure in egg viability has important biological ramifications, for example, in models that calculate reproductive success of females located at the edges of the distribution range for the species (PRICE, 1977) where not only egg-laying values are considered, but also hatchability and final larvae production. Reproductive capacity of the studied strains provides reference values that should be considered for different uses, as the information generated in the laboratory can be useful to predict behavior in the field (DE LA VEGA; DIAZ, 1996;DE LA VEGA, 2000;OGDEN et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

Comparison of efficiency and reproductive aptitude indexes between a reference and field strains of the cattle tick Rhipicephalus (Boophilus) microplus, in Sinaloa, Mexico

Camacho¹,

García-Vázquez²,

Cruz-Vázquez³

et al. 2009

RBPV

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Comparison of efficiency and reproductive aptitude indexes between a reference and field strains of the cattle tickRhipicephalus (Boophilus) microplus, in Sinaloa, Mexico AbstractThe objective of this work was to study the reproductive behavior of two strains of R. (B.) microplus, one wild-caught (Native) and one reference strain (Media Joya) for two years, measuring the reproductive efficiency index (REI) and reproductive aptitude index (RAI). Engorged ticks from each strain were collected monthly from February 2002 to February 2004. These were weighed and kept in the laboratory until egg-laying. Oogenic masses were individually weighed and incubated until larvae emergence. REI and RAI were calculated from each sample, grouping ticks by weight in 100 mg range classes. An analysis of variance and Duncan's multiple rank tests were carried out on the data (P < 0.05). Pearson's correlation coefficients were estimated (P < 0.01) in order to determine the relationship between engorgement weight and the weight and number of laid and hatched eggs. The Native strain showed a higher engorgement weight than Media Joya strain. In both strains REI and RAI were similar in all weight classes; with a quadratic tendency in Media Joya and linear-quadratic in the Native strain (P < 0.05). Significant differences where observed when REI and RAI of both strains were compared along the duration of the study (P < 0.01) with the Native strain performing better in both indexes, including better performance during the dry season. All parameters studied showed highly significant correlation; eggs laid and eggs hatched were notably highly correlated, 0.94 and 0.91, for Media Joya strain and Native strain respectively. ResumoO objetivo deste trabalho foi estudar a conduta reprodutiva de duas cepas de R. (B.) microplus, uma coletada no campo (Nativa) e outra de referência (Média Jóia), por dois anos, calculando o índice de eficiência reprodutiva (REI) e o índice de aptidão reprodutiva (RAI). Foram coletados mensalmente carrapatos fêmeas engurgitadas de cada cepa no período de Fevereiro de 2002 a Fevereiro de 2004. Estas foram pesadas e conservadas no laboratório até ovipositar. As massas de ovos foram pesadas individualmente e incubadas até a eclosão das larvas. O REI e o RAI foram calculados para cada coleta, agrupando os carrapatos em classe de peso de 100 mg. Os dados foram submetidos a uma análise de variância e prova de classe múltipla de Duncan (P < 0,05). Foram calculados os coeficientes de correlação de Pearson (P < 0,01) para estimar a associação entre o peso dos carrapatos engurgitados e o peso e número de ovos postos e eclosionados. A cepa Nativa mostrou um peso ao engurgitamento mais alto do que a cepa Média Jóia. Os valores de REI e de RAI em ambas cepas foram similares em todos as classes de peso, mostrando tendência cuadrática na Média Jóia e linear-cuadrática na cepa Nativa (P < 0,05). Ambos os índices por classe de peso no engurgitamento foram sempre mais altos na cepa Nativa (P < 0,05). Os valores de REI e de RAI de amba...

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Section: Discussionmentioning

confidence: 99%

Comparison of efficiency and reproductive aptitude indexes between a reference and field strains of the cattle tick Rhipicephalus (Boophilus) microplus, in Sinaloa, Mexico

Camacho¹,

García-Vázquez²,

Cruz-Vázquez³

et al. 2009

RBPV

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“…The effect of thermal constants on the non-parasitic stage of D. nitens was also studied [ 63 , 64 ]. The most favorable climatic conditions for D. nitens in Cuba were temperatures between 26 and 30 °C and 100% of relative humidity [ 63 , 65 , 66 ]. The studies by de la Vega et al [ 32 ] showed that the non-parasitic stage of R. microplus was better adapted to the warm-humid conditions of Cuba than that of D. nitens .…”

Section: Ecophysiology Of Ticks In Cubamentioning

confidence: 99%

Ticks and Tick-Borne Diseases in Cuba, Half a Century of Scientific Research

et al. 2020

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Ticks and the vast array of pathogens they transmit, including bacteria, viruses, protozoa, and helminths, constitute a growing burden for human and animal health worldwide. In Cuba, the major tropical island in the Caribbean, ticks are an important cause of vector-borne diseases affecting livestock production, pet animal health and, to a lesser extent, human health. The higher number of tick species in the country belong to the Argasidae family and, probably less known, is the presence of an autochthonous tick species in the island, Ixodes capromydis. Herein, we provide a comprehensive review of the ticks and tick-borne pathogens (TBPs) affecting animal and human health in Cuba. The review covers research results including ecophysiology of ticks, the epidemiology of TBPs, and the diagnostic tools used currently in the country for the surveillance of TBPs. We also introduce the programs implemented in the country for tick control and the biotechnology research applied to the development of anti-tick vaccines.

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Transmission of Babesia caballi by Dermacentor nitens (Acari: Ixodidae) Is Restricted to One Generation in the Absence of Alimentary Reinfection on a Susceptible Equine Host

Schwint

Knowles

Ueti

et al. 2008

Journal of Medical Entomology

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The tropical horse tick, Dermacentor nitens, is a natural vector of Babesia caballi in the Americas. B. caballi, one of the etiologic agents of equine piroplasmosis, occurs widely throughout the world, but the United States and a few other countries are considered to be free of infection. B. caballi is transovarially transmitted by the one-host tick D. nitens; we tested the hypothesis that B. caballi can persist in multiple generations of D. nitens in the absence of opportunity to reacquire infection from a susceptible equine host. Partially engorged female D. nitens were collected from a B. caballi-infected horse in Puerto Rico and allowed to reattach and feed on an uninfected horse, successfully transmitting the infection. Three subsequent generations of ticks were reared on calves (nonsusceptible hosts for B. caballi), testing for B. caballi infection in each generation by feeding a sample of the larvae on naive horses. The first generation ofD. nitens reared on a nonsusceptible host transmitted B. caballi, whereas the second and third failed to transmit to naive horses, showing that D. nitens infection with B. caballi was restricted to one generation in the absence of alimentary reinfection. These results imply that, in the event of the introduction of this pathogen into areas of the continental United States where D. nitens occurs, the tick could become a short-term reservoir of B. caballi, making control of introduced infections more complex.

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Larval Survival of Anocentor nitens Under Simulated Natural Conditions

Cited by 4 publications

References 3 publications

Comparison of efficiency and reproductive aptitude indexes between a reference and field strains of the cattle tick Rhipicephalus (Boophilus) microplus, in Sinaloa, Mexico

Comparison of efficiency and reproductive aptitude indexes between a reference and field strains of the cattle tick Rhipicephalus (Boophilus) microplus, in Sinaloa, Mexico

Ticks and Tick-Borne Diseases in Cuba, Half a Century of Scientific Research

Transmission of Babesia caballi by Dermacentor nitens (Acari: Ixodidae) Is Restricted to One Generation in the Absence of Alimentary Reinfection on a Susceptible Equine Host

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