| prevalence of strongyle nematodes in naturally infected ponies of different ages and during different seasons of the year in louisiana. | one hundred and seventeen ponies were surveyed for the seasonal prevalence of strongyloid parasites, particularly cyathostomes, and for host- and age-related differences in these infections. for 56 ponies, all stages of the cyathostome life cycle, both mucosal and luminal, were enumerated. total numbers of cyathostomes and percentage of developing larvae (dl) encysted in the mucosa remained constant in all 4 seasons of the year, whereas a significant increase in the percentage of adults in the c ... | 2003 | 12760645 |