Morphology of the infective larval stage of the equid parasite Habronema muscae (Spirurida: Habronematidae), from houseflies (Musca domestica)

2010 ◽  
Vol 108 (3) ◽  
pp. 629-632 ◽  
Author(s):  
Gerald R. Buzzell ◽  
Saeed Tariq ◽  
Donato Traversa ◽  
Rolf Schuster
2000 ◽  
Vol 24 (1-2) ◽  
Author(s):  
SAVIO AMADO ◽  
CLAUDIA C. GULIAS-GOMES ◽  
ELIANE M.V. MILWARD-DE-AZEVEDO

Author(s):  
Raylson Pereira de Oliveira ◽  
Jeane Gomes de Matos ◽  
Cosme Nogueira da Silva ◽  
João Sammy Nery de Souza ◽  
Nair Silva Cavalcanti de Lira ◽  
...  

2017 ◽  
Vol 54 (3) ◽  
pp. 225-230
Author(s):  
R. K. Schuster

SummaryIn order to study the damage of Habronema muscae (Carter, 1861) on its intermediate host, Musca domestica Linnaeus, 1758, fly larval feeding experiments were carried out. For this, a defined number of praeimaginal stages of M. domestica was transferred in daily intervals (from day 0 to day 10) on faecal samples of a naturally infected horse harboring 269 adult H. muscae in its stomach. The development of M. domestica was monitored until imagines appeared. Harvested pupae were measured and weighted and the success of infection was studied by counting 3rd stage nematode larvae in freshly hatched flies. In addition, time of pupation and duration of the whole development of the flies was noticed. Pupation, hatching and preimaginal mortality rates were calculated and the number of nematode larvae in freshly hatched flies was counted. Adult flies harboured up to 60 Habronema larvae. Lower pupal volumes and weights, lower pupation rates and higher preimaginal mortality rates were found in experimental groups with long exposure to parasite eggs compared to experimental groups with short exposure or to the uninfected control groups. Maggots of the former groups pupated earlier and fly imagines occurred earlier. These findings clearly showed a negative impact of H. muscae on the development of M. domestica. The results are discussed in connection with the destruction of adipose cells in the maggots by developing nematode larvae.


1912 ◽  
Vol 12 (4) ◽  
pp. 516-526 ◽  
Author(s):  
Hamilton Tebbutt

(1) Pathogenic organisms such as B. dysenteriae (type “Y”) cannot be recovered from pupae or imagines reared from larvae to which these organisms have been administered.(2) When the larvae have been bred from disinfected ova and are subsequently fed on B. dysenteriae (type “Y”), this organism may be successfully recovered from the pupae and imagines in a small proportion of cases.(3) Under similar conditions B. typhosus was not recovered in a single case from pupae or imagines.(4) In those cases in which B. dysenteriae (Y) was successfully recovered from pupae, the colonies on the plate were invariably fewer than those obtained from pupae and imagines after administration to the larvae of more adaptable organisms such as “Bac. A”(Ledingham).(5) When organisms such as “Bac. A” were administered to larvae bred from disinfected ova, or non-disinfected ova contaminated with this organism, it was in many cases possible to recover the organism from pupae and imagines.(6) In no series of pupae examined after administration to the larvae of either B. dysenteriae or “Bac. A” was it possible to recover the organisms in every instance. A certain proportion of pupae in both cases proved sterile, so that the process of metamorphosis is undoubtedly accompanied by a considerable destruction of the bacteria present in the larval stage.(7) The temperature at which the larvae develop (19°–25°C.) has probably an important bearing on the survival of pathogenic organisms such as “Bac. Y” of dysentery, administered in association with organisms such as “Bac. A,” in view of the fact that the latter grows far more luxuriantly at this temperature. Even when grown in broth at 37°C. (the optimum temperature for Bac. Y) together with “Bac. A,” the “Bac. Y” was found to form after two days only one quarter of the total number of bacteria present in the mixed growth.(8) There was no evidence that the larval juices contained substances bactericidal for Bac. Y. The bacilli died more rapidly in normal saline solution.(9) The possibility of flies becoming infected from the presence of pathogenic organisms in the breeding ground of the larvae may be considered as very remote.


Parasitology ◽  
2006 ◽  
Vol 133 (4) ◽  
pp. 524-524
Author(s):  
E.T. LYONS

The scientific aspect is high calibre and well documented regarding the life-cycle, biology and pathology caused by the eyeworm – Thelazia callipaeda. The studies were well planned and showed that the house fly-Musca domestica was (is) not the intermediate host. On the contrary, it was demonstrated that the first larval stage is capable of developing to the third infective larval stage in the fly genera – Amniota and Phortica. The research is excellent and the narrative on the DVD complements well the science. Commercial aspects of the parasiticides for control of the nematodes are also well presented. The DVD would be of interest to laypersons, in addition to practicing parasitologists, veterinarians and physicians.


Author(s):  
Eric Hallberg ◽  
Lina Hansén

The antennal rudiments in lepidopterous insects are present as disks during the larval stage. The tubular double-walled antennal disk is present beneath the larval antenna, and its inner layer gives rise to the adult antenna during the pupal stage. The sensilla develop from a cluster of cells that are derived from one stem cell, which gives rise to both sensory and enveloping cells. During the morphogenesis of the sensillum these cells undergo major transformations, including cell death. In the moth Agrotis segetum the pupal stage lasts about 14 days (temperature, 25°C). The antennae, clearly seen from the exterior, were dissected and fixed according to standard procedures (3 % glutaraldehyde in 0.15 M cacaodylate buffer, followed by 1 % osmiumtetroxide in the same buffer). Pupae from day 1 to day 8, of both sexes were studied.


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