Volume 90, Issue 5
September 1981, pages 495-591
pp 495-501 September 1981
A histochemical study has been made of alterations in some hydrolytic enzymes such as alkaline phosphatase, acid phosphatase and 5’-nucleotidase of the vas deferens of sexually mature albino rats following bilateral testectomy. Three weeks after operation, vas deferens shows a significant decrease in the activities of acid phosphatase, alkaline phosphatase and 5’-nucleotidase indicating conspicuous metabolic alterations and reduction in transport mechanisms following removal of the source of androgens.
pp 503-511 September 1981
The changes in the histology of thoracic ganglion in females ofMacro-brachium lanchesteri, prior to spawning and post parturial moult, have been described. Based on the differences in size, cell inclusions and differential staining with CHP, four distinct types of neurosecretory cells have been identified in the ganglion. The activity of these cells has been correlated with the ovarian condition of the prawn and evidence for the elaboration of a gonad-stimulating hormone (GSH), by the ganglion has been derived. The, probable regulation of ovarian maturation during a normal ovarian cycle and that during the ovigerous condition ofM. lanchesteri have been illustrated.
pp 513-517 September 1981
Light has an effect on the development ofArgulus. It stimulates hatching of larva.Argulus larvae exhibit a positive reaction to light by rapidly moving to a more illuminated part of water. Thermophilic fishes may be attacked by the larvae ofArgulus, Light stimulatesArgulus (H) eggs more thanArgulus (VVS) eggs.
pp 519-527 September 1981
Based on collections of benthic ostracodes during the 15 month period (October 1976–December 1977) from three selected stations in the shallow Balacheruvu tidal stream on the east coast of India, quantitative variations in different species of ostracodes have been studied in relation to water characteristics such as temperature, dissolved oxygen, salinity and sedimentological characteristics like sand, silt, clay and organic matter content.
pp 529-532 September 1981
Prolactin modulated tissue cholesterol distribution of male albino rats. Testis and epididymis had elevated cholesterol levels which was correlated to increased androgenesis. Both prostate and seminal vesicles had depleted levels, might be due to elevated seminal plasma secretion. Since heart and dorsal aorta recorded significant accumulation of cholesterol in response to prolactin administration, involvement of prolactin in cardiovascular disorders in rats was envisaged.
pp 533-538 September 1981
The total haemolymph protein concentration inOdontopus varicornis (Dist.) during ovarian development and after allatectomy and ovariectomy is investigated. A fall in the haemolymph concentration is observed during vitellogenesis indicating the utilisation of the haemolymph protein for yolk formation in the oocytes. The haemolymph protein concentration remains low in the allatectomised females. It increases to high levels in the ovariectomised animals. These observations indicate that the corpus allatum controls the protein synthesis associated with oocyte maturation.
pp 539-543 September 1981
The spiderHippasa pantherina consumes more oxygen through the book-lungs than through the tracheae. The total amount of oxygen consumed during day is more than the amount consumed during night. The amount of oxygen consumed is directly proportional to the body weight of the animal.
pp 545-552 September 1981
Statistical analysis indicated that mean alcohol dehydrogenase (ADH) activity levels within ADH1 and ADH11 isochromosomal lines varied significantly among the Mexican populations ofDrosophila melanogaster used. Also as indicated by coefficient of variation values for ADH activity, the relative amount of genetic variation differed among and within the ADH1 and ADH11 strains examined. The quantitative nature of the differences in ADH activity supported the concept of the additive gene action of the alcohol dehydrogenase (Adh) locus. The manner in which our isochromosomal lines were constructed suggested that genes regulating ADH activity inD. melanogaster were located on the second chromosomes.
pp 553-560 September 1981
Deuterobaris intestinalis Mehrotra, 1973 is described in detail and its validity discussed. A key to the species of the genus is provided. The description ofOctangium takanoi is also supplemented.
pp 561-565 September 1981
Two new monogenetic trematodes,Thaparocleidus yogendraii n.sp.,T.jaini n.sp. andDactylogyms kontii Tripathi, 1957 have been described from the gills ofWallago attuSchneider at Lucknow.Thaparocleidus yogendraii is characterised by the shape of ventral anchor, number of marginal hooklets and absence of a handle in the accessory piece of cirrus andT.jaini by the shape and arrangement of anchors and marginal hooklets. Moreover, certain features of interest have been added to the original description ofD. kontii Tripathi, 1957.
pp 567-570 September 1981
Tremiorchis ranarum Mehra and N?gi, 1925 has been recorded from the frogsRana tigrina Daud andRana cyanophlyctis Schneider, at district Lucknow.T. varanum Verma, 1930 has been transferred under the genusAstiotrema Looss.T. mehrai Rai, 1962;T. vitelloconfluentum Rai 1962;T. tigrinarum Sinha et al 1974;T. mathuraensis Swaroop and Jain 1976 andT. spiniphlyctis Kalyankar and Palladwar 1978 have been considered synonyms ofT. ranarum Mehra and Negi 1925.
pp 571-575 September 1981
Elevation in the levels of the blood inorganic ions and depletion in the levels of the blood organic reserves, except TNPS, noticed during ‘starvation regime’ of the slug are discussed irt view of their specific roles in energy metabolism.
pp 577-583 September 1981
The ova ofMacrobrachium kistnensis are characterized by the presence of perinuclear glycogen spherules and peripheral proteid yolk. The ovarian epithelium is rich in neutral mucopolysaccharides. The vitellogenic oocytes filled with yolk globules and granules are rich in corbohydrates and lipids.
pp 585-591 September 1981
The metabolic adaptations of the male and female species ofTanqua tiara Linstow, 1879, to the microenvironment in the stomach of its hostTropidonotus piscator and the adaptation of the organ to the presence of tht parasite are studied. The parasites adapt by storing glycogen, by possessing free glucose, by diverting the pathway to PEP-malate-succinate type. The stomach adapts to the presence of parasites by increasing its glycogen, free glucose, Pyruvate and Phosphatases. The SDH, LDH and MDH activities arc lowered suggesting the operation of Kreb’s cycle.