Nectar feeding by the hovering hawk moth Macroglossum stellatarum: Intake rate as a function of viscosity and concentration of sucrose solutions
Although nectar feeding in insects has long been studied, the knowledge of the effect of nectar energy content on the ingestion dynamics separately from the viscosity of the fluid is very limited. To determine the effects of both factors on the feeding behavior of the hovering hawk moth Macroglossum...
Guardado en:
| Publicado: |
2001
|
|---|---|
| Materias: | |
| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03407594_v187_n8_p661_Josens http://hdl.handle.net/20.500.12110/paper_03407594_v187_n8_p661_Josens |
| Aporte de: |
| id |
paper:paper_03407594_v187_n8_p661_Josens |
|---|---|
| record_format |
dspace |
| spelling |
paper:paper_03407594_v187_n8_p661_Josens2023-06-08T15:34:17Z Nectar feeding by the hovering hawk moth Macroglossum stellatarum: Intake rate as a function of viscosity and concentration of sucrose solutions Hawk moths Intake rate Macroglossum stellatarum Nectar feeding Nectar viscosity sucrose animal article chemistry eating feeding behavior flying moth physiology viscosity Animals Eating Feeding Behavior Flight, Animal Moths Sucrose Viscosity Accipitrinae Animalia Hexapoda Insecta Lepidoptera Macroglossum Macroglossum stellatarum Sphingidae Although nectar feeding in insects has long been studied, the knowledge of the effect of nectar energy content on the ingestion dynamics separately from the viscosity of the fluid is very limited. To determine the effects of both factors on the feeding behavior of the hovering hawk moth Macroglossum stellatarum, we developed a method to independently manipulate sucrose concentrations and viscosity. The intake rate was analyzed as a function of sucrose concentration, the concentration at constant viscosity (kept constant by adding tylose, an inert polysaccharide), and of the different viscosities of a 30% weight/weight (w/w) sucrose solution (by adding different amounts of tylose). By increasing the concentration, and thus its viscosity, the solution intake rate (in μl s-1) decreased beyond a 20% w/w sucrose solution. For a 30% sucrose solution, the intake rate decreased with increasing viscosity. At constant viscosity, the solution intake rate decreased beyond a 30% w/w sucrose solution. However, if we considered the quantity of sucrose ingested per unit time (sucrose intake rate), the same fitted maximum was attained for both series in which the sucrose concentration changed (33.6% w/w). Results suggest that the gustatory input affects the dynamics of fluid ingestion separately from the viscosity. 2001 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03407594_v187_n8_p661_Josens http://hdl.handle.net/20.500.12110/paper_03407594_v187_n8_p661_Josens |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Hawk moths Intake rate Macroglossum stellatarum Nectar feeding Nectar viscosity sucrose animal article chemistry eating feeding behavior flying moth physiology viscosity Animals Eating Feeding Behavior Flight, Animal Moths Sucrose Viscosity Accipitrinae Animalia Hexapoda Insecta Lepidoptera Macroglossum Macroglossum stellatarum Sphingidae |
| spellingShingle |
Hawk moths Intake rate Macroglossum stellatarum Nectar feeding Nectar viscosity sucrose animal article chemistry eating feeding behavior flying moth physiology viscosity Animals Eating Feeding Behavior Flight, Animal Moths Sucrose Viscosity Accipitrinae Animalia Hexapoda Insecta Lepidoptera Macroglossum Macroglossum stellatarum Sphingidae Nectar feeding by the hovering hawk moth Macroglossum stellatarum: Intake rate as a function of viscosity and concentration of sucrose solutions |
| topic_facet |
Hawk moths Intake rate Macroglossum stellatarum Nectar feeding Nectar viscosity sucrose animal article chemistry eating feeding behavior flying moth physiology viscosity Animals Eating Feeding Behavior Flight, Animal Moths Sucrose Viscosity Accipitrinae Animalia Hexapoda Insecta Lepidoptera Macroglossum Macroglossum stellatarum Sphingidae |
| description |
Although nectar feeding in insects has long been studied, the knowledge of the effect of nectar energy content on the ingestion dynamics separately from the viscosity of the fluid is very limited. To determine the effects of both factors on the feeding behavior of the hovering hawk moth Macroglossum stellatarum, we developed a method to independently manipulate sucrose concentrations and viscosity. The intake rate was analyzed as a function of sucrose concentration, the concentration at constant viscosity (kept constant by adding tylose, an inert polysaccharide), and of the different viscosities of a 30% weight/weight (w/w) sucrose solution (by adding different amounts of tylose). By increasing the concentration, and thus its viscosity, the solution intake rate (in μl s-1) decreased beyond a 20% w/w sucrose solution. For a 30% sucrose solution, the intake rate decreased with increasing viscosity. At constant viscosity, the solution intake rate decreased beyond a 30% w/w sucrose solution. However, if we considered the quantity of sucrose ingested per unit time (sucrose intake rate), the same fitted maximum was attained for both series in which the sucrose concentration changed (33.6% w/w). Results suggest that the gustatory input affects the dynamics of fluid ingestion separately from the viscosity. |
| title |
Nectar feeding by the hovering hawk moth Macroglossum stellatarum: Intake rate as a function of viscosity and concentration of sucrose solutions |
| title_short |
Nectar feeding by the hovering hawk moth Macroglossum stellatarum: Intake rate as a function of viscosity and concentration of sucrose solutions |
| title_full |
Nectar feeding by the hovering hawk moth Macroglossum stellatarum: Intake rate as a function of viscosity and concentration of sucrose solutions |
| title_fullStr |
Nectar feeding by the hovering hawk moth Macroglossum stellatarum: Intake rate as a function of viscosity and concentration of sucrose solutions |
| title_full_unstemmed |
Nectar feeding by the hovering hawk moth Macroglossum stellatarum: Intake rate as a function of viscosity and concentration of sucrose solutions |
| title_sort |
nectar feeding by the hovering hawk moth macroglossum stellatarum: intake rate as a function of viscosity and concentration of sucrose solutions |
| publishDate |
2001 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03407594_v187_n8_p661_Josens http://hdl.handle.net/20.500.12110/paper_03407594_v187_n8_p661_Josens |
| _version_ |
1768543611119468544 |