| lack of behavioral fever in nematode-parasitized drosophila. | the parasitic nematode howardula aoronymphium causes severe fertility reduction and sterility in females of several species of mycophagous drosophila. infected females of drosophila putrida recover their fertility when kept at a postemergence temperature of 29 c but not when kept at 27 c or below. when given a choice of temperatures in a thermal gradient, neither this species, drosophila falleni, nor drosophila neotestacea manifested adaptive behavioral fever in response to parasitism. however, ... | 1995 | 7472853 |
| ecological genetics of abdominal pigmentation in drosophila falleni: a pleiotropic link to nematode parasitism. | drosophila falleni belongs to the quinaria species group, whose species vary considerably in patterns of wing and abdominal pigmentation. drosophila falleni itself exhibits substantial variation among wild flies in abdominal spotting patterns. a selection experiment revealed that natural populations of d. falleni harbor high levels of genetic variation for spot number: in 10 generations of selection modal spot number within populations declined from 18 (the modal number in wild-caught females) t ... | 2004 | 15119442 |
| olfactory preferences of the parasitic nematode howardula aoronymphium and its insect host drosophila falleni. | many parasitic nematodes have an environmental infective stage that searches for hosts. olfaction plays an important role in this process, with nematodes navigating their environment using host-emitted and environmental olfactory cues. the interactions between parasitic nematodes and their hosts are also influenced by the olfactory behaviors of the host, since host olfactory preferences drive behaviors that may facilitate or impede parasitic infection. however, how olfaction shapes parasite-host ... | 2017 | 28315996 |
| infection dynamics and immune response in a newly described drosophila-trypanosomatid association. | trypanosomatid parasites are significant causes of human disease and are ubiquitous in insects. despite the importance of drosophila melanogaster as a model of infection and immunity and a long awareness that trypanosomatid infection is common in the genus, no trypanosomatid parasites naturally infecting drosophila have been characterized. here, we establish a new model of trypanosomatid infection in drosophila--jaenimonas drosophilae, gen. et sp. nov. as far as we are aware, this is the first d ... | 2015 | 26374124 |
| suboptimal virulence of an insect-parasitic nematode. | recent considerations of parasite virulence have focused on the adverse effects that parasites can have on the survival of their hosts. many parasites, however, reduce host fitness by an equally deleterious but different means, by causing partial or complete sterility of their hosts. a model of optimal parasite virulence is developed in which a quantity of host resources can be allocated to either host or parasite reproduction. increases in parasite reproduction thus cause reductions in host fer ... | 1996 | 28565686 |
| nematocytes: discovery and characterization of a novel anculeate hemocyte in drosophila falleni and drosophila phalerata. | immune challenges, such as parasitism, can be so pervasive and deleterious that they constitute an existential threat to a species' survival. in response to these ecological pressures, organisms have developed a wide array of novel behavioral, cellular, and molecular adaptations. research into these immune defenses in model systems has resulted in a revolutionary understanding of evolution and functional biology. as the field has expanded beyond the limited number of model organisms our apprecia ... | 2017 | 29141015 |
| the quantitative genetics of fluctuating asymmetry. | fluctuating asymmetry (subtle departures from identical expression of a trait across an axis of symmetry) in many taxa is under stabilizing selection for reduced asymmetry. however, lack of reliable estimates of genetic parameters for asymmetry variation hampers our ability to predict the evolutionary outcome of this selection. here we report on a study, based on analysis of variation within and between isofemale lines and of generation means (line-cross analysis), designed to dissect in detail ... | 2001 | 11327158 |
| habitat continuity and the genetic structure of drosophila populations. | | 1997 | 28565482 |
| ecological generalism in drosophila falleni: genetic evidence. | | 1979 | 28563929 |