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Your search keyword '"Carios capensis"' showing total 3 results
Start Over Descriptor "Carios capensis" Topic ecology
3 results on '"Carios capensis"'

1. GROWTH OF BROWN PELICAN NESTLINGS EXPOSED TO SUBLETHAL LEVELS OF SOFT TICK INFESTATION.

Author

Eggert, Lisa M. F. and Jodice, Patrick G. R.

Subjects
*BROWN pelican, *BABY birds, *NESTS, *PARASITISM, *EGG incubation, *TICKS, *ORNITHOLOGY, *ECOLOGY
Abstract

Ectoparasites are a common component of seabird colonies and are generally considered to have a negative impact on their hosts. Nest parasites such as the soft tick Carios capensis may pose a distinct threat to altricial nestlings confined to the nest and unable to escape infestation. To assess the potential effects of ticks on growth, we measured linear growth rates of Brown Pelican (Pelecanus occidentalis) nestlings during early development in relation to C. capensis infestation at insecticide treated and untreated nests at two colonies in South Carolina during the 2004 and 2005 breeding seasons. Tick infestation levels differed between colonies but not between years. We found a positive relationship between tick infestation and both growth rates and hatching success at the more infested colony. We did not find a consistent relationship between insecticide treatment and growth rates, although chicks from nests treated with insecticide had fewer ticks compared to chicks from untreated nests. Our study suggests that the cohabitation of ectoparasites and seabirds within colonies may result in behavioral or physiological adaptations of adults or nestlings that inhibit the expected negative effect of ectoparasites on nestling growth at sublethal levels of infestation. [ABSTRACT FROM AUTHOR]

Published
2008
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2. First Detection ofRickettsiain Soft-Bodied Ticks Associated with Seabirds, Japan

Author

Ichiro Kurane, Hiromi Fujita, Noboru Nakamura, Yoko Ushijima, Shuji Ando, Miyako Tsurumi, Ai Takano, Hiroki Kawabata, Sadao Nogami, Fumio Sato, Mamoru Takahashi, Masahito Fukunaga, Toshio Kishimoto, and Haruo Watanabe

Subjects
Male, biology, Ecology, Immunology, Ribosomal RNA, biology.organism_classification, Microbiology, Pacific ocean, Birds, Ticks, Rickettsia, Japan, Phylogenetics, RNA, Ribosomal, 16S, Virology, biology.animal, Animals, Female, Seabird, Carios capensis, Phylogeny
Abstract

Rickettsia was first detected in seabird soft-bodied ticks, Carios capensis and C. sawaii in Japan. According to sequence analysis, Rickettsia in Japan was identical to Rickettsia scc31 in C. capensis in the U.S.A. This suggested that an environmental circulation had consisted among microorganisms, ticks and long distance migratory seabirds around the Pacific Ocean.

Published
2006
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3. The mitochondrial genomes of soft ticks have an arrangement of genes that has remained unchanged for over 400 million years

Author

Norihiko Tabuchi, Y. Aoki, Masahito Fukunaga, Stephen C. Barker, Harumi Mitani, and Renfu Shao

Subjects
Most recent common ancestor, Molecular Sequence Data, Zoology, Tick, DNA, Mitochondrial, Genome, Japan, Ornithodoros moubata, Gene Order, parasitic diseases, Genetics, Animals, Codon, Carios capensis, Molecular Biology, Gene, Base Sequence, biology, Ecology, Sequence Analysis, DNA, Locus Control Region, bacterial infections and mycoses, biology.organism_classification, Insect Science, Argasidae, Haemaphysalis flava, Hard ticks
Abstract

There are two major groups of ticks: soft ticks and hard ticks. The hard ticks comprise the prostriate ticks and the metastriate ticks. The mitochondrial (mt) genomes of one species of prostriate tick and two species of metastriate ticks had been sequenced prior to our study. The prostriate tick has the ancestral arrangement of mt genes of arthropods, whereas the two metastriate ticks have rearrangements of eight genes and duplicate control regions. However, the arrangement of genes in the mt genomes of soft ticks had not been studied. We sequenced the mt genomes of two species of soft ticks, Carios capensis and Ornithodoros moubata, and a metastriate tick, Haemaphysalis flava. We found that the soft ticks have the ancestral arrangement of mt genes of arthropods, whereas the metastriate tick, H. flava, shares the rearrangements of mt genes and duplicate control regions with the other two metastriate ticks that have previously been studied. Our study indicates that gene rearrangements and duplicate control regions in mt genomes occurred once in the most recent common ancestor of metastriate ticks, whereas the ancestral arrangement of arthropods has remained unchanged for over 400 million years in the lineages leading to the soft ticks and the prostriate ticks.

Published
2004
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