| acanthocephalans from crabs in the southeastern u.s., with the first intermediate hosts known for arhythmorhynchus frassoni and hexaglandula corynosoma. | cystacanths of hexaglandula corynosoma were discovered in the fiddler crabs uca spinicarpa and uca rapax collected in mississippi and florida. adults were present in yellow-crowned night herons, nyctanassa violacea, collected in florida. cystacanths are very similar to adults, varying only in size and state of development. this is the first record of h. corynosoma from the united states and the first record of an intermediate host for any species of the genus. cystacanths of arhythmorhynchus fra ... | 2002 | 12053984 |
| helminth parasites of the southern sea otter enhydra lutris nereis in central california: abundance, distribution and pathology. | from october 1997 to may 2001, the gastrointestinal tracts from 162 beach-cast southern sea otters enhydra lutris nereis were examined for helminth parasites and associated lesions. carcasses were collected opportunistically in central california between pt. san pedro and pt. arguello. the primary goals of this study were to examine spatial and temporal variability in mortality due to parasite infection, identify factors associated with increased risk of infection, and illustrate the process of ... | 2003 | 12608572 |
| parasite infection and sand coarseness increase sand crab (emerita analoga) burrowing time. | parasites with indirect life cycles require trophic transmission from intermediate hosts to definitive (vertebrate) hosts. transmission may be facilitated if parasite infection alters the behavior of intermediate hosts such that they are more vulnerable to predation. vulnerability to predation may also be influenced by abiotic factors; however, rarely are the effects of parasites and abiotic factors examined simultaneously. the swash zone of sandy beaches is a particularly harsh environment. san ... | 2011 | 21959036 |
| pan-american marine coastal distribution of the acanthocephalan profilicollis altmani based on morphometric and phylogenetic analyses of cystacanths from the mole crab emerita brasiliensis. | thorny-headed acanthocephalan worms of the genus profilicollis are widely distributed in the oceans of the world and present complex life cycles with intermediate and definitive hosts. the genus is still poorly known, with an unstable taxonomy and, for most species, incompletely characterized geographical distributions. in this study, based on molecular and morphological evidence, we report that the species profilicollis altmani is also distributed along the south american atlantic coast, using ... | 2017 | 27126405 |
| mass mortality attributed to acanthocephaliasis at a gull-billed tern (gelochelidon nilotica) colony in coastal california. | from 12 may 2013 to 29 may 2013, the gull-billed tern (gelochelidon nilotica) colony at the san diego bay national wildlife refuge, california, experienced a mass die-off of at least 92 adults, representing 71-92% of the breeding population on the us west coast. cause of death was determined to be peritonitis due to perforations of the intestine by a large quantity of acanthocephala (profilicolis [=polymorphus] altmani). this is a unique report of p. altmani infecting g. nilotica, and a report o ... | 2017 | 28753411 |