Competição intraespecífica em Boophilus microplus

Santos, Andreia Passos dos; Furlong, John

doi:10.1590/s0103-84782002000600018

Cited by 12 publications

(12 citation statements)

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“…There was a range from 0.45 to 35.30 mg of the weight of the egg mass from the back, with an average of 6.76 mg, which is statistically similar to the average of 6.90 mg obtained from the pinna region, where the range was from 0.51 mg to 36.45 mg. This similarity can be explained by the fact that the weights of the engorged females in the two regions were similar, thus confirming the aforementioned direct relationship between the weight of engorged females and number of eggs laid (SANTOS;FURLONG, 2002). The weight of egg masses reported in the literature concerning the tick R.…”

Section: Resultssupporting

confidence: 80%

“…Rabbits present low numbers because there is a correlation between the weight of the engorged female and the number of eggs laid. Therefore, smaller females lay fewer eggs, thus taking fewer days for the process, as described by Santos and Furlong (2002). The weight of the eggs, the residual weight of the females and the indices of reproductive efficiency and nutrition in the two groups are presented in Table 2.…”

Section: Resultsmentioning

confidence: 99%

“…This confirms the statement about the close relationship between these two parameters (weight of engorged females and egg weight). According to Borges et al (2001), measures that increase the weight of engorged females increase the weight of egg masses (SANTOS;FURLONG, 2002).…”

Section: Resultsmentioning

confidence: 99%

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Biological parameters of cattle ticks fed on rabbits

Amaral

Prata

Daemon

et al. 2012

Rev. Bras. Parasitol. Vet.

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With the objective of encouraging the use of rabbits as alternative hosts for the cattle tick, four rabbits were infested on the ears and back. From the second day of infestation the developmental stages were observed. The duration of larval engorgement and changes were estimated between six and eight days in the region of the back and between five and seven days in the pinna. The nymphal engorgement and changes occurred at approximately 10.80 ± 2.65 days in the dorsal and 11.00 ± 2.52 days in the ear, with the engorgement of adults and copulation occurring at 7.03 ± 2.45 days, on the dorsal region and 8.55 ± 1.82 days in the region of the pinna. The parasitic period ranged from 21 to 29 days (back) and from 23 to 30 days (pinna). The engorged females of the back and ear weighed on average 34.43 ± 18.73 and 36.30 ± 18.10 mg, respectively. The nutritional and reproductive efficiency indexes were 17.38 ± 14.27 and 26.85 ± 17.13% (back) and 17.42 ± 12.22% and 30.70 ± 19.80% (pinna). Although not appropriate to maintain successive generations of Rhipicephalus (Boophilus) microplus, rabbits can be used for different stages of engorgement of the ixodid, allowing experimental studies.Keywords: Rhipicephalus (Boophilus) microplus, alternate host, biological parameters. ResumoCom objetivo de viabilizar o uso de coelhos como hospedeiros alternativos do carrapato bovino, foram infestados quatro coelhos nas orelhas e no dorso. A partir do segundo dia da infestação, foram observados os estágios de desenvolvimento dos carrapatos. A duração do ingurgitamento e muda larval foi estimada entre seis e oito dias na região do dorso e entre cinco e sete dias no pavilhão auricular. O ingurgitamento e muda ninfal ocorreram em aproximadamente, 10,80 ± 2,65 dias na região dorsal e 11,00 ± 2,52 dias no pavilhão auricular; e o ingurgitamento e cópula dos adultos ocorreu em 7,03 ± 2,45 dias, na região do dorso e em 8,55 ± 1,82 dias na região do pavilhão auricular . O período parasitário variou de 21 a 29 dias (dorso) e de 23 a 30 dias (pavilhão auricular). As fêmeas ingurgitadas do dorso e orelha pesaram, em média, 34,43 ± 18,73 e 36,30 ± 18,10 mg, respectivamente. Os índices de eficiência reprodutiva e nutricional foram de 17,38 ± 14,27 e 26,85 ± 17,13% (região do dorso) e de 17,42 ± 12,22% e 30,70 ± 19,80% (pavilhão auricular). Embora não sejam adequados para manter sucessivas gerações de Rhipicephalus (Boophilus) microplus, os coelhos podem ser empregados para o ingurgitamento dos diferentes estádios deste ixodídeo, viabilizando estudos experimentais.Palavras-chave: Rhipicephalus (Boophilus) microplus, hospedeiro alternativo, parâmetros biológicos.

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Section: Resultssupporting

confidence: 80%

Section: Resultsmentioning

confidence: 99%

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Biological parameters of cattle ticks fed on rabbits

Amaral

Prata

Daemon

et al. 2012

Rev. Bras. Parasitol. Vet.

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“…A similar result was observed for the oviposition period of engorged females exposed to S. glaseri and H. bacteriophora IJs (H=4.699, P=0.5829 and H=3.489, P=0.384, respectively; Tables 1, 2). The values which we obtained are similar to those cited by Gloria et al (1993) and Santos and Furlong (2002).…”

Section: Resultssupporting

confidence: 93%

Steinernema glaseri Santa Rosa strain (Rhabditida: Steinernematidae) and Heterorhabditis bacteriophora CCA Strain (Rhabditida: Heterorhabditidae) as biological control agents of Boophilus microplus (Acari: Ixodidae)

Vasconcelos

Furlong²,

Freitas

et al. 2004

Parasitol Res

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The present study was carried out to evaluate the action of Steinernema glaseri Santa Rosa strain and Heterorhabditis bacteriophora CCA strain as biological control agents of Boophilus microplus. Engorged females ticks were distributed on Petri dishes containing different concentrations of infective juvenile (IJ) nematodes (0, 375, 500, 750, 1,500, 2,500, 5,000 and 25,000). The data showed a reduction of approximately 90% in the eggs laid at a concentration of 5,000 S. glaseri IJs and approximately 80% at a concentration of 1,500 H. bacteriophora IJs. The female mortality increased linearly with the increase in S. glaseri concentrations. However, in the tests with H. bacteriophora this linearity was not observed. The effectiveness of the treatment with both species of entomopathogenic nematodes was compatible with other control methods. The results show the potential of S. glaseri and H. bacteriophora as biological control agents for the control of B. microplus under laboratory conditions.

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“…On the other hand, the same positive correlation failed to occur in research by Zhioua et al (1995), Kaaya et al (2000) and Samish et al (1999b). Means of reproductive efficiency index (REI) of control group reached 46.18%, close to 47.8% by Santos and Furlong (2002). Only 26 out of 62 B. microplus females, exposed to S. carpocapsae Santa Rosa strain, produced larvae.…”

Section: Resultsmentioning

confidence: 81%