Haemocytes in Haemolymph Coagulation of Arthropods

Ravindranath, Mepur H.

doi:10.1111/j.1469-185x.1980.tb00691.x

Cited by 41 publications

(13 citation statements)

References 97 publications

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“…The results obtained for F. indicus are in agreement with the general view that three circulating haemocyte populations exist in crustaceans (Bauchau, 1981), although various authors have adopted various terminologies as well as different classification schemes based on size, shape, staining characteristics, and the presence or absence of granules (George & Nichols, 1948;Wood & Visentin, 1967;Stang-Voss, 1971;Bauchau & De Brouwer, 1972;Ravindranath, 1980;Cornick & Stewart, 1978;Smith & Ratcliff, 1978;Martin et al, 1987;Hose et al, 1990).…”

Section: Discussionsupporting

confidence: 83%

Fine Structure of the Haemocytes of the Indian White Shrimp, Fenneropenaeus Indicus (H. Milne Edwards, 1837)

Laxmilatha¹,

Laxminarayana²

2004

Crustac

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Three types of circulating haemocytes have been identified in the haemolymph of the Indian white shrimp, Fenneropenaeus indicus, by electron microscopy. The ultrastructure of an agranulocyte, a dense granulocyte, and a semi-dense granulocyte, are described. The possible presence of a fourth type of haemocyte, viz., the cyanocyte, is discussed. The ultrastructure of a special type of haemocyte found in the haemolymph of shrimps with a developing ovary is described.

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Section: Discussionsupporting

confidence: 83%

Fine Structure of the Haemocytes of the Indian White Shrimp, Fenneropenaeus Indicus (H. Milne Edwards, 1837)

Laxmilatha¹,

Laxminarayana²

2004

Crustac

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“…Hose et aL (1990) Present study Martin & Graves (1985) DISCUSSION Three types of haemocytes, namely hyaline, semigranular and granular cells, were identified in Scylla serrata. We applied the standard terminology in describing the haemocytes, based on the previous reports on crustacean haemocytes (George & Nichols, 1948;Wood & Visentin, 1967;Stang-Voss, 1971;Bauchau & De Brouwer, 1972;Cornick & Stewart, 1978;Ravindranath, 1980;Hose et al, 1990). The present observations on the haemocytes of mud crab are in agreement with the general observation that crustaceans display relatively simple haemocytes (Smith, 1991), which are mainly subdivided into three cell types: hyaline, semigranular and granular.…”

Section: Morphological Characterisationsupporting

confidence: 84%

Microscopic and cytochemical characterisation of haemocytes of the mud crab Scylla serrata (Forskål, 1775) (Decapoda, Portunidae)

Kumar

Deepika

Arumugam

et al. 2013

Crustac

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Haemocytes of the mud crab Scylla serrata (Forskål, 1775) were characterised based on morphological features using light and electron microscopy, and cytochemistry. The cells were identified as hyaline, semigranular and granular haemocytes. Hyaline cells were the smallest haemocytes among the three types identified, having the highest nucleo-cytoplasmic ratio. The cells showed a number of cytoplasmic organelles and also contained a few small as well as large-sized granules. Semigranular haemocytes possessed moderate numbers of large-sized granules or numerous small-sized granules and comparatively less numbers of organelles. Granular haemocytes were the largest haemocytes with the lowest nucleo-cytoplasmic ratio and contained many large-sized granules. Cytoplasmic organelles were least observed in the granular haemocytes. These three haemocyte morphotypes constituted 60, 21 and 19%, respectively, of the total haemocyte population, while the total haemocyte count was 7.31 × 106 to 7.18 × 107 with a mean of 2.86 × 107 cells ml−1. In cytochemical studies performed to localize carbohydrates, lipids and prophenol oxidase, all the haemocyte types were positive for PAS and toluidine blue, indicating the presence of mucopolysaccharides, whereas semigranular and granular haemocytes were rich in carbohydrates and lipid moieties. Besides, prophenol oxidase was localised within the granules of semigranular and granular haemocytes. Hyaline haemocytes showed an abundance of well differentiated cytoplasmic organelles and granules, and there was a distinct differentiation between semigranular and granular haemocytes in terms of granules and organelles. This is the first report of the characterisation of haemocytes of the mud crab.

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“…Cystocytes and oenocytoids were less abundant haemocytes (George and Ambrose, 1998, 1999, 2000. Cystocytes normally take part in coagulation (Ravindranath, 1980) whereas oenocytoids take part in cellular defence (Kurihara et al, 1992) and post-embryonic development (Saini and Rose, 1986;Kurihara et al, 1992). The tested insecticides also caused significant variations in the percentage of cystocytes and oenocytoids.…”

Section: Discussionmentioning

confidence: 99%

Impact of insecticides on the haemogram of Rhynocoris kumarii Ambrose and Livingstone (Hem., Reduviidae)

George

Ambrose

2004

J Applied Entomology

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The haemogram of Rhynocoris kumarii Ambrose and Livingstone comprises prohaemocytes, plasmatocytes, granular haemocytes, cystocytes and oenocytoids. The impact of five insecticides, viz. monocrotophos, dimethoate, methylparathion, quinalphos and endosulfan on the total haemocyte count (THC) and differential haemocyte counts (DHC) was studied. All of the insecticides except endosulfan initially reduced both prohaemocytes and plasmatocytes, increased the granular haemocytes, altered the percentage of cystocytes and oenocytoids and increased the total haemocyte count (THC). On the contrary, endosulfan initially increased the prohaemocytes and plasmatocytes, decreased the granular haemocytes and also the THC. The highest impact on the DHC and THC was caused by methylparathion and monocrotophos and the least impact by endosulfan. Hence, endosulfan is considered as the safest insecticide followed by dimethoate and quinalphos among these five insecticides to use with R. kumarii.

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Haemocytes in Haemolymph Coagulation of Arthropods

Cited by 41 publications

References 97 publications

Fine Structure of the Haemocytes of the Indian White Shrimp, Fenneropenaeus Indicus (H. Milne Edwards, 1837)

Fine Structure of the Haemocytes of the Indian White Shrimp, Fenneropenaeus Indicus (H. Milne Edwards, 1837)

Microscopic and cytochemical characterisation of haemocytes of the mud crab Scylla serrata (Forskål, 1775) (Decapoda, Portunidae)

Impact of insecticides on the haemogram of Rhynocoris kumarii Ambrose and Livingstone (Hem., Reduviidae)

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