Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

The secretion of digestive enzymes and caecal size are determined by dietary protein in the cricket Gryllus bimaculatus

Title data

Woodring, Joseph ; Weidlich, Sandy:
The secretion of digestive enzymes and caecal size are determined by dietary protein in the cricket Gryllus bimaculatus.
In: Archives of Insect Biochemistry and Physiology. Vol. 93 (2016) Issue 3 . - pp. 121-129.
ISSN 1520-6327
DOI: https://doi.org/10.1002/arch.21346

Abstract in another language

In Gryllus bimaculatus, the size of the caecum decreases in the latter half ofeach instar to a stable minimal size with a steady minimal rate of digestiveenzyme secretion until feeding resumes after ecdysis. The higher the percentprotein in the newly ingested food, the faster and larger the caecum grows,and as a consequent the higher the secretion rate of trypsin and amylase.When hard boiled eggs (40% protein) are eaten the caecum is 2× larger,the trypsin secretion is almost 3× greater, and amylase 2.5× greater thenwhen fed the same amount of apples (1.5% protein). Only dietary proteinincreases amylase secretion, whereas dietary carbohydrates have no effect onamylase secretion. The minimal caecal size and secretion rate must besupported by utilization of hemolymph amino acids, but the growth of thecaecum and increasing enzymes secretions after the molt depend upon anamino acid source in the lumen. This simple regulation of digestive enzymesecretion is ideal for animals that must stop feeding in order to molt. Thisbasic control system does not preclude additional regulation mechanisms,such as prandal, which is also indicated for G. bimaculatus, or evenparamonal regulation. C 2016 Wiley Periodicals, Inc.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER137909
Institutions of the University: Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Animal Ecology II - Evolutionary Animal Ecology
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 19 Jan 2018 10:10
Last Modified: 19 Jan 2018 10:10
URI: https://eref.uni-bayreuth.de/id/eprint/41421