Some quantitative changes observed in Philosamia ricini pupal haemolymph during metamorphosis.
نویسندگان
چکیده
1. The quantitative variations of the concentrations of uric acid, citrate, nucleic acids and total and acid-soluble phosphorus in the pupal haemolymph of Philosamia ricini during metamorphosis have been studied. 2. The mean value for total nitrogen in the haemolymph and total loss in weight of the insects during metamorphosis have also been recorded.
منابع مشابه
Qualitative and quantitative changes observed in the free alpha-amino nitrogen fraction of Tenebrio molitor pupal tissues during metamorphosis.
An outstanding feature of the biochemistry of insects is the fact that a very high concentration of free amino acids has been found in the haemolymph of every insect so far investigated. (See Florkin, 1949; Buck, 1953.) This represents about twothirds of the total free amino acids in the insect, and concentrations of from 20 to 100 times that of the total free a-amino nitrogen content of mammal...
متن کاملMetamorphic Changes in Protein Profiles and Protease Activity in the Silkworm, Bombyx Mori during Pupal - Adult Transformation
Metamorphic changes in protein profiles vis-a-vis protease activity have been studied in the fat body and haemolymph of the silkworm, Bombyx mori during pupal-adult transformation. The trends in these two biochemical constituents run counter parallel to each other and vary as a function of certain events such as the fat body remodeling, histolysis and histogenesis that characterize silkworm met...
متن کاملTime Course Studies on Impact of Low Temperature Exposure on the Levels of Protein and Enzymes in Fifth Instar Larvae of Eri Silkworm, Philosamia ricini (Lepidoptera: satuniidae)
Lactate dehydrogenase (LDH; EC 1.1.1.27) and malate dehydrogenase (MDH; EC 1.1.1.37) are the enzymes involved in energy metabolism of Eri silkworm, Philosamia ricini. However, no previous study has been reported about effect of low temperature exposure on their levels in different tissues of Eri silkworm. The present study was aimed to the time-course effects of low temperature (~10°C) exposure...
متن کاملThe nucleotide sequence of 5.8S rRNA from the posterior silk gland of the silkworm Philosamia cynthia ricini.
The nucleotide sequence of 5.8S rRNA from the Chinese silkworm Philosamia cynthia ricini has been determined by gel sequencing and mobility shift methods. The complete primary structure is (sequence in text). This is one of the largest known 5.8S rRNAs. As compared to Bombyx 5.8S rRNA, it is two nucleotides longer; two nucleotides near the 5'end and two nucleotides near the 3'end are different...
متن کاملVariation in Metal Ion Concentrations in the Haemolymph of the Silkworm, Bombyx mori During Development
Changes in the levels of haemolymph metal ions of two binoltine races of the silkworm, Bombyx mori (NB4D2 and CSR2) and the multivoltine race (Pure Mysore ) was studied at different stages of larval and pupal development. The haemolymph metal ions showed significant changes during different stages of larval development like moult, post-moult, feeding and spinning and pupal stages like pre-pupa,...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- The Biochemical journal
دوره 96 3 شماره
صفحات -
تاریخ انتشار 1965