In vivo magnetic resonance imaging (MRI) and angiography were applied to the marine spider crab Maja squinado for a study of temperature effects and thermal tolerance. Ventilation and haemolymph circulation were investigated during progressive cooling from 12°C to 2°C. The anatomical resolution of MR images from Maja squinado obtained with a standard spin echo sequence were suitable to resolve ...

Acid-toxicity tests were performed using two crayfish species, Procambarus clarki Girard and Orconectes rusticus Girard to determine the median lethal pH (LC60) after 4 days exposure to acid. Four-day LC50 values of pH 2*5-2-8 were observed, indicating that these animals are more acid-tolerant than most fish species. Haemolymph acid-base variables and major ion concentrations were measured duri...

Lipid composition of the fat body and haemolymph of male milkweed bug, On.cc@eltus fasciatus, was determined. Triglycerides were the predominant lipids of the fat body while diglycerides accounted for the major lipid in the haemolymph. Sterols, sterol esters, and non-esterified fatty acids were present in both fat body and haemoIymph besides triglycerides and diglycerides. Only traces of monogl...

Ventilatory control of internal CO(2) plays an important role in regulating extracellular acid-base balance in terrestrial animals. While this phenomenon is well understood among vertebrates, the role that respiration plays in the acid-base balance of insects is in need of much further study. To measure changes in insect haemolymph pH, we implanted micro pH optodes into the haemocoel of cockroa...

Changes in polypeptides pattern of haemolymph, midgut, ovary and salivary glands of female mosquito A. stephensi were studied when fed upon anti-mosquito haemolymph antibodies. The expression of almost all polypeptides was reduced in haemolymph and ovary of the immune fed mosquitoes as compared to control. However, there was no significant difference in case of midgut and salivary glands. Seven...

The effects of high temperature on cationic composition of haemolymph of the three selected races of the silkworm, Bombyx mori, viz., PM, NB4D2 and CSR2 during 4 moult and 5 instar larval development were th th investigated. Haemolymph cation levels increased significantly throughout the feeding period from 1 to 6 day st th in all the three races and showed a significant decrease on 7 day. Mg a...

Haemolymph Na+, Cl~, K+, Mg, Ca, Cu and protein levels, in vivo postbranchial acid-base status (total CO2, pH and PCOt), in vitro haemolymph buffer value, Bohr value and oxygen affinity were measured before and after a 31-week period in which control crayfish were maintained at normoxia and experimental crayfish were maintained at an ambient oxygen tension of 50-55 torr. Analysis of haemolymph ...

BACKGROUND In this study the haemolymph components of infected and none infected Lymnaea gedrosiana with xiphidiocercaria larvae was compared. METHODS Five hundred Fifty Lymnaea snails were collected from Ilam and Mazandaran provinces, Iran, during 2008-2009. The snails were transported to the lab at Tehran University of Medical Sciences and their cercarial sheddings were studied. Haemolmyphs...

Male sagebrush crickets, Cyphoderris strepitans, offer an unusual nuptial food gift to females during copulation: females feed on the hindwings of males and ingest haemolymph seeping from the wounds they inflict. Previous work has shown that females prevented from wing feeding during initial copulations are more receptive to subsequent matings than females permitted to wing feed. In the present...

The hydrocarbons in extractable lipids of haemolymph from healthy and diseased larvae of the Japanese beetle (Popillia japoniea) have been characterized. Haemolymph contains at least 21 saturated hydrocarbons having from 21 to 27 carbon atoms. Normal, monomethyl-branched, and dimethylbranched alkanes with even and odd carbon numbers were identified. Tricosane (12%), ll-methyltricosane (19%), 9,...