Perception of different sugars by blowflies

Taste response curves of flies to different concentrations of the sugars glucose, maltose, and sucrose. Glucose, the smallest of the three sugars, is a monosaccharide. The threshold value of glucose was the highest in this experiment because a higher concentration of this small sugar Perception of different sugars by blowflies needed to elicit a positive response.

The Physiology of Insect Senses. Flies are able to taste food by walking on it Dethier, Flies show a selectivity of response to sugars based on molecular size and structure. Pearson Benjamin Cummings, San!! Even though it tastes to times as sweet as sucrose to people Budavari,flies taste the sodium and so reject saccharin as a salt.

This selectivity is a valuable asset to a fly because it helps the fly recognize potentially toxic substances as well as valuable nutrients H. My other hypothesis was not supported, however, because the flies did not respond positively to saccharin.

We counted a positive response whenever a fly lowered its proboscis. We counted a positive response whenever a fly lowered its proboscis.

Two flies did respond positively to saccharin, but the response of only two flies is not significant, and the lab group that got the positive responses to saccharin may not have rinsed the flies!! We rinsed the flies between tests by swishing their feet in distilled water.

The membranes located on the tarsi are the actual functional receptors since it is their depolarization that propagates the stimulus to the fly Dethier, Two flies did respond positively to saccharin, but the response of only two flies is not significant, and the lab group that got the positive responses to saccharin may not have rinsed the flies?

Maltose and sucrose are both disaccharides but not with the same molecular weight or composition. My other hypothesis was not supported, however, because the flies did not respond positively to saccharin.

Because sucrose is an alphaglucosidase derivative, it makes sense that the threshold value for sucrose occurs at a lower concentration than that for maltose. Substances such as alcohols and salts could dehydrate the fly and have other harmful effects on its homeostasis Dethier, Glucose is a monosaccharide and is shown as part of each of these molecules.

Substances such as alcohols and salts could dehydrate the fly and have other harmful effects on its homeostasis Dethier, We tested the flies sensory perception by giving each fly the chance to feed from each sugar, starting with the lowest concentration and working up.

Reece Biology, 8 th ed.

Perception of Different. Sugars by Blowflies

Two flies did respond positively to saccharin, but the response of only two flies is not significant, and the lab group that got the positive responses to saccharin may not have rinsed the flies 5 Fly lab report p.

Overall, our results show that flies are able to taste and choose foods that are good for them. Substances such as alcohols and salts could dehydrate the fly and have other harmful effects on its homeostasis Dethier, Hollow hairs around the proboscis and tarsi contain receptor neurons that can distinguish among water, salts, and sugars, and flies can distinguish among different sugars Dethier, The flies responded to sucrose at a lower concentration than they did of glucose, and they didn t respond to saccharin at all.

To do this, we attached flies to the ends of sticks and lowered their feet into solutions with different concentrations of these sugars. Flies taste food with specific cells on their tarsal hairs. To ensure that positive responses were to sugars and not to water, we let them drink distilled water before each test.

Of the five cells, stimulation of the water and sugar cells induce feeding, while stimulation of the salt, alcohol, and oil receptors inhibit feeding. Our results show that they taste larger sugar molecules more readily than they do smaller ones. The sweetener people use is actually the sodium salt of saccharic acid Budavari, The average number of flies in each lab group that fed from 0.

Flies taste food with specific cells on their tarsal hairs.Download Citation on ResearchGate | On Jan 1,Alexander Hamilton and others published Perception of Different Sugars by Blowflies }.

We tested the flies’ sensory perception by giving each fly the chance to feed from each sugar, starting with the lowest concentration and working up and rinsing the flies between tests. See Biology Department () for details. RESULT S A fly responded to high concentrations (1M) of sugar by lowering its proboscis and feeding.

Edit, fill, sign, download Sample Bio Lab Report - Hamilton College online on killarney10mile.com Printable and fillable Sample Bio Lab Report - Hamilton College. Perception of Different. Sugars by Blowflies.

by Alex ander Ha milton. Biology October 24, different sugars and a sugar substitute, saccharin. Because. SAMPLE LAB REPORT Perception of Different Sugars by Blowflies by Alexander Hamilton Biology October 24, Lab Partners: Sharon Flynn, Andi Alexander ABSTRACT Fly lab report p.

2 To feed on materials that are healthy for them, flies (order Diptera) use taste receptors on their tarsi to find sugars to ingest. Fly lab report p. 7 Fly lab report p.

Fig. 1. Taste response curves of flies to different concentrations of the sugars glucose, maltose, and sucrose. Fig. 2. Chemical formulas of sucrose and maltose (Biology Department, ).

Perception of Different Sugars by Blowflies

Glucose is a monosaccharide and is shown as part of each of these molecules. Fly lab report p. 1 SAMPLE LAB REPORT Perception of Different Sugars by Blowflies by Alexander Hamilton Biology October 24, Lab Partners: Sharon Flynn, Andi Alexander This preview has intentionally blurred sections%(1).

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Perception of different sugars by blowflies
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