نتایج جستجو برای: acanthocephalan eggs
تعداد نتایج: 29317 فیلتر نتایج به سال:
present paper is the second publication introducing the paleoparasitological findings from animal coprolites obtained from archeological site of chehrabad salt mine in northwest-ern iran. the current archeological site is located in northwest of iran , dated to the sas-sanian era (4 th /5 th century ce).in the summer 2012 the carnivore coprolite was obtained within the layers in the mine and we...
Sir, Acanthocephalan (“spiny-headed”) worms are enteroparasites of birds characterised by a retractile proboscis armed with rows of thorns (Lacina & Bird, 2000). They penetrate the intestinal mucosa with the proboscis causing inflammation and nodules (Heidenreich, 1997). An arthropod (insect or mollusk) becomes the first intermediate host ingesting acanthocephalan eggs that contain the larvae (...
Previously, we reported a tick recovered from Antelope Cave in extreme northwest Arizona. Further analyses of coprolites from Antelope Cave revealed additional parasitological data from coprolites of both human and canid origin. A second tick was found. This site is the only archaeological locality where ticks have been recovered. We also discovered an acanthocephalan in association with Entero...
The reproductive period is a critical part of species’ life history. Estimating species-specific fecundity can improve demographic models aimed at developing recovery targets for imperilled species. We provide egg diameter and estimates develop length–fecundity relationship silver shiner, Notropis photogenis (Cope, 1865), small-bodied freshwater species listed as Threatened under Canada's Speci...
Present paper is the second publication introducing the paleoparasitological findings from animal coprolites obtained from archeological site of Chehrabad salt mine in northwestern Iran. The current archeological site is located in northwest of Iran, dated to the Sassanian Era (4(th)/5(th) century CE). In the summer 2012 the carnivore coprolite was obtained within the layers in the mine and wer...
Adult acanthocephalan body sizes vary interspecifically over more than two orders of magnitude; yet, despite its importance for our understanding of the coevolutionary links between hosts and parasites, this variation remains unexplained. Here, we used a comparative analysis to investigate how final adult sizes and relative increments in size following establishment in the definitive host are i...
The present study was performed to investigate the infection status with helminth in a group of feral cats in Korea. More than 29 helminth species including adults or eggs were detected in visceral and fecal samples of the examined cats. Among these were a host of nematodes, including toxocarids, Ancylostoma sp. and the larva of Anisakis simplex; trematodes, including Clonorchis sinensis, Parag...
The acanthocephalan fauna of Iran is reported for the first time since the report of Pomphorhynchus perforator (von Linstow, 1908) Meyer, 1932 in 1964. The knowledge of the acanthocephalan biodiversity of Iran, with parasite-host and host-parasite checklists, is presented. The species of Acanthocephala are presented in alphabetical order, followed by the species of hosts, localities and referen...
Aim Little is known about phylogeography and cryptic diversity of parasites in the marine environment. The acanthocephalan Profilicollis altmani parasitizes intermediate hosts that are broadly distributed around the Americas and final hosts that are highly motile. We investigated the spatial genetic structure of this acanthocephalan found in three species of Emerita crabs: (1) to test whether l...
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