geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

The activity of the digestive enzymes from the viewpoint of the feeding ecology of insectivorous bats


, : The activity of the digestive enzymes from the viewpoint of the feeding ecology of insectivorous bats.

In this study we have e[alpha]amined the activity of ([alpha]-amylase, acide and alcaline phosphatases and proteases of different organs of the digestive system in four species of insectivorous bats [Nyctalus noctula (Schreber, 1774); Myotis blythii (Tomes, 1857); Eptesicus serotinus (Schreber, 1774): Rhmolophus ferrumequinum (Schreber, 1774)]. In all examined species of bats, the digestive enzymes displayed activity in all organs of the digestive tract including the esophagus and the large intestine. The data received from the study shows evidence of a multi-stage hydrolysis of protein component by various proteases in accordance with the principle of continuity of proteolysis by means of several proteases or their forms, whose maxmum activity takes place in the acid (the stomach), neuter and alkaline media (the stomach, the pancreas, the small and large intestines). Species varying levels of activity of the digestive enzymes have been observed. They are believed to be bound not only to the composition of diets, but also to ecological characteristics of the species (foraging, regularity and intensity of feeding affect the dynamics and quantity of the food to be digested).

US$29.90


Other references

Onyeocha, F.; Fuzeau Braesch, S., 1990: Effects of different insecticides on reproduction of the migratory locust Locusta migratoria. Fifth-instar larvae of the acridid Locusta migratoria were treated with doses of dieldrin, methomyl, fenitrothion and permethrin corresponding to the LD30, LD50 and LD80. Reproduction by the surviving adults was recorded. A decrease in the number...

Xu-Qiuhua; Yan-Shan, 2001: Ultrasonographic study of parotid malignant lymphoma and malignant lymphoepithelioma. Objective: To report rare parotid malignant lymphomas and malignant lymphoepitheliomas in 12 cases and discuss their features of B-mode and CDFI. Methods: The hardness, morphology, boundary, internal echo, posterior echo and latero-posterior shado...

Persson, C.; Subramaniyam, D.; Stevens, T.; Janciauskiene, S., 2006: Do native and polymeric alpha1-antitrypsin activate human neutrophils in vitro?. Background: alpha(1)-Antitrypsin (AAT)-Z deficiency is a risk factor for the development of COPD. Compared to wild-type M, AAT-Z has an increased tendency to polymerize, rendering it inactive as a serine proteinase inhibitor. It has been demonstra...

Jaeger, J.J.ques; Chaimanee, Y.; Tafforeau, 2004: Systematics and paleobiology of the anthropoid primate Pondaungia from the late Middle Eocene of Myanmar. Several newly recovered specimens documenting the Eocene Myanmar (South East Asia) anthropoid taxa Pondaungia and Amphipithecus modify the classical understanding of the taxonomy of these two primates, which have in fact no substantial morphologic...

Schwindinger, W.F.; Warner, J.R., 1987: Transcriptional elements of the yeast ribosomal protein gene CYH2. The sequences responsible for specifying and regulating the transcription of the yeast ribosomal protein gene CYH2 have been studied using deletion analysis. We have identified a region between 235 and 260 nucleotides upstream of the transcription...

Chicco, A.J.; Sparagna, G.C., 2006: Role of cardiolipin alterations in mitochondrial dysfunction and disease. Cardiolipin (CL) is a structurally unique dimeric phospholipid localized in the inner mitochondrial membrane where it is required for optimal mitochondrial function. In addition to its role in maintaining membrane potential and architecture, CL i...

Kusner, H.F.; Novik, I.E., 1962: The use of seminal plasma as a diluent for cock semen.. Russian White semen diluted 1: 4 with New Hampshire seminal plasma was used to inseminate Russian White . Of 131 eggs set, 50. 16% were fertile and 67.75% of these hatched v. 91. 81 and 77.0% resp. of 140 eggs of Russian White inseminated with und...

Hachamovitch, R.; Berman, D.S.; Shaw, L.J.; Kiat, H.; Cohen, I.; Cabico, J.A.; Friedman, J.; Diamond, G.A., 1998: Incremental prognostic value of myocardial perfusion single photon emission computed tomography for the prediction of cardiac death: differential stratification for risk of cardiac death and myocardial infarction. Background-The incremental prognostic value of stress single photon emission computed tomography (SPECT) for the prediction of cardiac death as an individual end point and the implications for risk stratification are undefined. Methods and Results...

Willis Bailey, 1928: Geotectonics of the Pacific. 1: 358-369 1928

Figueiredo, J.M.; Dias, W.B.; Mendonça-Previato, L.; Previato, Jé.O.; Heise, N., 2004: Characterization of the inositol phosphorylceramide synthase activity from Trypanosoma cruzi. IPC (inositol phosphorylceramide) synthase is an enzyme essential for fungal viability, and it is the target of potent antifungal compounds such as rustmicin and aureobasidin A. Similar to fungi and some other lower eukaryotes, the protozoan paras...