Volume 96, Issue 2
March 1987, pages 81-151
pp 81-115 March 1987
This paper describes 34 new galls and records one widely distributed gall, collected by the first author in the course of a two-month visit to the Fiji Islands. The midge galls include those onFlacourtia sp.,Calophyllum sp.,Heritiera ornithocephala, Canarium vitiense, Syzygium rubescens, Astronidium sp.,Plerandra vitiense, Tapeinosperma sp.,Pagiantha thurstonii, Cyrtandra sp.,Glochidion ramniflorum, Gironniera celtidifolia, Gnetum gnemon, etc. The Eriophyid galls are onHibiscus schizopetalus, Hibiscus tiliaceus, Brucea javanica, Vitis vitifolia, Pometia pinnata, Ipomaea gracilis, Ipomaea sp.,Macaranga magna andNephrolepis biserrata. The Psyllid galls occur onCanarium sp.,Haplolobus floribundus, Maesa tabacifolia, Myristica micrantha, Cryptocarya sp. The dominance of leaf galls and midge galls is considered as strong evidence of the relatively recent origin of the flora of these islands.
pp 117-127 March 1987
Leaf age correlated infestation patterns ofRhipiphorothrips cruentatus onTerminalia catappa revealed specificity in stage and site selection. An indepth analysis of the quantitative as well as qualitative profiles of proteins, amino acids and fatty acids in age specific leaves exemplified a correlatable influence on the infestation patterns.
pp 129-134 March 1987
Topical application and injection of various doses of dichlorvos and carbaryl to the fourth instar larvae ofPericallia ricini did not alter the normal differentiation of various centres of the brain during metamorphosis but certain changes were produced in the neurons and neurites. These changes included the thickening of the neurilemma, clumping of chromatin, disintegration of cells and swelling of nuclei. The neurilemma of treated larvae became wavy, remained as such till the early adult stage and then degenerated for a very short period. The optic lobe anlagen cells exhibited increased mitotic division.
pp 135-140 March 1987
Increase in food supply produced elevated values of several parameters in energy budget of both normal and starved individuals (P<0·001). Starvation accelerated the rates of feeding, absorption and metabolism (3 times) and conversion (1 1/2 times;P<0·001).Pila globosa starved for a month lost 79·5 mg dry weight/g live weight and the recovery periods to attain the original body weight were estimated as 66, 72, 88, 32, 28 and 23 days between 8 and 20% rations.
pp 141-149 March 1987
The physical, chemical and biological variables and pollution of river Cooum with sewage and heavy metal were studied in 4 stations within Madras city for a period of one year from August 1982 to July 1983. The physical, chemical and biological parameters presented complex pattern of variations indicating that the biotic life of Cooum river is severely affected by the excessive discharge of sewage effluents within the city limits which excessively eutrophicate the river water. The number of species and density of zooplankton are very low. Heavy metals such as iron, nickel, lead and zinc are recorded to be above permissible levels.
pp 151-151 March 1987