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首页> 外文期刊>Zoological Science >Histological and Histochemical Study of the Hepatopancreas of Two Estuarine Crab Species, Cyrtograpsus angulatus and Neohelice granulata (Grapsoidea, Varunidae): Influence of Environmental Salinity
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Histological and Histochemical Study of the Hepatopancreas of Two Estuarine Crab Species, Cyrtograpsus angulatus and Neohelice granulata (Grapsoidea, Varunidae): Influence of Environmental Salinity

机译：两种酯蟹种，Cyrtograpsus Angulatus和Neohelice Granulata（Grapsoidea，Varuidae）的组织学和组织化学研究：环境盐度的影响

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The aim of this study was to analyze the histology and the histochemical distribution of glycoproteins (GPs) and lipids of the hepatopancreas of Cyrtograpsus angulatus and Neohelice granulata acclimated to salinities of 10 psu (hyperregulation) and 35 psu (osmoconformation). Sections of the hepatopancreas of adult male crabs were treated with hematoxylin-eosin; Masson trichrome; Alcian Blue (pHs 2.8, 1.0, 0.5); Toluidine Blue (pHs 5.6, 4.2); periodic acid Schiff; Sudan Black and Red. At salinity 35 psu, the hepatopancreas of both species exhibited typical histological features, whereas at salinity 10 psu, detachment of the basal lamina, desquamated epithelium, disrupted brush border, loss of intercellular cohesion, hypertrophied tubular lumen, and hemolymph infiltration between cells were observed in some zones. Resorptive cells (R-cells) and vacuoles of blister-like cells (B-cells) of both species show a higher glycogen content at 35 psu than at 10 psu. At lower salinities, the cytoplasm of the different cell types evidence higher contents of carboxylated GPs in N. granulata and of sulfated GPs in C. angulatus. At both salinities, and at the two pHs in N. granulata and at pH 5.6 in C. angulatus, the brush border, the vacuoles of B-cells and the peritrophic membrane show metachromasia. R-cell vacuoles and the cytoplasm of all cell types -except for the E-cells-at all salinities in both species show abundant lipid droplets. The results of the present study contribute significant data to the histophysiology of crustacean decapods, favoring the comprehension of the complex adjustment mechanisms facing saline stress in euryhaline crabs.
机译：本研究的目的是分析Cyrtograpsus Angulatus和Neohelice Granulata的肝酸钠（GPS）和脂质的组织学和组织化学分布，并将其适应10psu（超细则）和35psu（Osmoconformation）的盐度。用苏木精 - 曙红治疗成人雄性蟹的肝胆碱的部分;马龙·塔丘上; Alcian Blue（PHS 2.8,1.0,0.5）;甲苯胺蓝（pHS 5.6,4.2）;定期酸Schiff;苏丹黑色和红色。在盐度35psu中，两种物种的肝胆碱表现出典型的组织学特征，而在盐度10 psu，拆除基底椎板，脱裂的上皮，破碎的刷子边界，细胞间凝聚，肥大管状内腔和细胞之间的血腥的细胞凋亡。在一些区域。两种物种的吸塑细胞（R细胞）和泡罩状细胞（B细胞）的泡沫含量在35psu的35psu中显示出比10psu的更高糖苷含量。在较低的盐度下，不同细胞类型的细胞质在C.Ngulatus中的N.Granulata和硫酸盐GPS中的羧化GPS含量较高。在两个盐度，并且在N.Granulata的两种pH中和在C.ngulatus的pH 5.6中，刷边缘，B细胞的泡沫和脱脂膜显示出比较。所有细胞类型的R细胞液泡和所有细胞类型的细胞质 - 在两个物种中的所有盐度下都显示出丰富的脂液滴。本研究的结果有助于甲壳类动物脱盖的组织学生学有很大的数据，倾向于理解肠系蟹中面对盐胁迫的复杂调节机制。

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