| triatoma ryckmani (hemiptera: reduviidae) in the epiphyte tillandsia xerographica (bromeliaceae) in the semiarid region of guatemala. | for the first time, the reduviid bug triatoma ryckmani zeledón and ponce (hemiptera; reduviidae) was recorded to inhabit the epiphyte tillandsia xerographica rohweder (bromeliaceae) in the semiarid region of guatemala. these bromeliads grow mainly in drought-resistant trees with rough bark such as pereskia lychnidiflora (cactaceae). in our study site, we investigated 30 t. xerographica, and 53 specimens of t. ryckmani were found. most t. ryckmani (68.5%) were unfed. ants (formicidae) were the pr ... | 2004 | 15185931 |
| dispersion and colonization of triatoma ryckmani (hemiptera: reduviidae) in artificial environments in a semiarid region of a chagas disease endemic area in guatemala. | the colonization capacity and dispersal of sylvatic populations of triatoma ryckmani zeledón and ponce were investigated by means of experimental chicken coops installed within the semiarid region in the department of el progreso, guatemala. in the four artificial habitats a total of 672 t. ryckmani was found as well as two males of t. dimidiata (latreille). triatomine densities were not the same in the four chicken coops. from one chicken coop 53.4% (359) of the triatomines were collected. full ... | 2004 | 15234663 |
| a mass collection of triatoma ryckmani (hemiptera: reduviidae) from stenocereus eichlamii (cactaceae) in the semiarid region of guatemala. | a population of 216 specimens of stenocereus eichlamii (cactaceae, subfamily cereoideae) was surveyed for triatoma ryckmani (vector of chagas disease) in a one hectare plot of semiarid habitat in guatemala. out of 44 plants that had dead and dry sections, 24 plants had a total of 103 specimens of t. ryckmani. in comparison with other areas of guatemala, t ryckmani is well established in the semiarid ecosystem (infestation index 54.5, density = 2.3 and crowding index 4.3). the insects were mainly ... | 2004 | 17354404 |
| [external morphology of triatoma rickmani zeledón & ponce, 1972 seen under scanning electron microscopy]. | a male of triatoma ryckmani zeledón & ponce, 1972, was studied by scanning electron microscopy. only few specimens of this species are known. in this paper, some structures from the head, thorax, abdomen and distal region of the second leg are shown. some of them could have taxonomic importance, as the oculo-ocellar region, the buccula, the anterolateral angle of the collar, the scutellum with the process longer than the main body, the stridulatory sulcus with an unusual backward vermiform area, ... | 2006 | 9283654 |
| life cycle of triatoma ryckmani (hemiptera: reduviidae) in the laboratory, feeding patterns in nature and experimental infection with trypanosoma cruzi. | a cohort initiated with 121 eggs, yielding 105 first instar nymphs (eclosion rate: 86.78%), allowed us to observe the entire life cycle of triatoma ryckmani under laboratory conditions (24 degrees c and 62% relative humidity), by feeding them on anesthetized hamsters. it was possible to obtain 62 adults and the cycle from egg to adult took a mean of 359.69 days with a range of 176-529 days (mortality rate of nymphs: 40.95%). mean life span of adults was of 81 days for females and 148 days for ma ... | 2010 | 20209337 |
| notes on rhodnius pallescens, triatoma ryckmani and four other species of triatomines from nicaragua. | | 2006 | 16526130 |