| a new species of eimeria (apicomplexa: eimeriidae) from the marbled salamander, ambystoma opacum (caudata: ambystomatidae), from northern louisiana. | between december 2002 and june 2004, 10 marbled salamanders, ambystoma opacum, were examined for coccidian parasites. salamanders were collected in bradley (n = 2), little river (n = 1), miller (n = 1), and sevier (n = 1) counties, arkansas; webster parish, louisiana (n = 2); and bowie (n = 1) and nacogdoches (n = 2) counties, texas. two of 10 (20%) a. opacum from louisiana harbored an undescribed species of eimeria. oocysts of eimeria trauthi n. sp. were ellipsoidal, 36.6 x 33.1 (33-40 x 29-37) ... | 2008 | 18605797 |
| metals, parasites, and environmental conditions affecting breeding populations of spotted salamanders (ambystoma maculatum) in northern arkansas, usa. | the spotted salamander (ambystoma maculatum) is indigenous to northern arkansas, and several breeding sites are known to exist in the region. spotted salamanders (n = 17) were collected and examined for parasites and only three females harbored nematodes (physaloptera spp.). chronic aquatic bioassays were conducted using water collected from eight breeding ponds during different hydroperiod events. no lethal or sublethal effects were measured in ceriodaphnia dubia; however, decreased growth and ... | 2016 | 26886425 |
| biogeography of the southeastern united states: a comparison of salamander phylogeographic studies. | most phylogeographic studies of species from the southeastern united states have shown a simple east-west division of mtdna variation. however, a study of the salamander ambystoma maculatum resulted in a more complex pattern that includes a close affinity between populations from the central highlands of missouri and arkansas and the coastal plain separated by a genetically distinct central group of populations. we test the generality of this observation by surveying mitochondrial dna (mtdna) va ... | 2000 | 11005312 |