Various haemolymph components of the shrimp Penaeus japonicus were identified and characterised by monoclonal antibodies. Three groups of monoclonal antibodies were raised. Their reactivity to haemocyte types and/or secreted molecules was determined by immunofluorescence and the molecular masses of the antigens were analysed by western-blotting. A 170 kDa protein, in reducing conditions, was re...

It has long been viewed that invertebrates rely exclusively upon a wide variety of innate mechanisms for protection from disease and parasite invasion and lack any specific acquired immune mechanisms comparable to those of vertebrates. Recent findings, however, suggest certain invertebrates may be able to mount some form of specific immunity, termed 'specific immune priming', although the mecha...

Radix lagotis is an intermediate snail host of the nasal bird schistosome Trichobilharzia regenti. Changes in defence responses in infected snails that might be related to host-parasite compatibility are not known. This study therefore aimed to characterize R. lagotis haemocyte defence mechanisms and determine the extent to which they are modulated by T. regenti. Histological observations of R....

Latha Nadkandi Padmanabhan, Sudha Devi Arath Raghavan*, Chandrashekar Sagar Bhadravathi Kenchappa 4 5 Department of Zoology and Research Centre, Mary Matha Arts and Science College, Mananthavady, Wayanad, Kerala, 6 India 670 645 7 Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bangalore, Karnataka, India 560 8 029 9 10 E-mail: [email protected] 11 12 Ab...

Purpose: The brown planthopper (BPH), Nilaparvata lugens, is one of the most serious insect pests rice (Oryza sativa L.) in South and East Asia also parts Pacific Australia. BPH, like other insects, able to build up powerful innate immune responses against invading pathogens cellular immunity mediated by haemocytes. Hence, an attempt was made investigate detailed microscopic analysis haemocytes...

The colonial ascidian Botryllus schlosseri possesses an innate immunity, which plays fundamental roles in its survival, adaptability, worldwide spread and ecological success. Three lines of differentiation pathways circulating haemocytes are known to be present the haemolymph, starting from undifferentiated haemoblasts: (i) phagocytic line (hyaline amoebocytes macrophage-like cells), (ii) cytot...

Time-lapse microphotography was used to film the locomotory behaviour of cockroach haemocytes in vitro, and the cell tracks were analysed for speed and persistence; the percentage mobilization and the diffusion rate of the population were calculated. Haemocytes are either fast locomotor or spread moving cells, or non-motile spread or rounded cells; the first three types are plasmatocytes and th...