Hierarchical organization of the cuticle of the subsocial desert isopod, Hemilepistus reaumurii

Ayari, Anas; Raimond, Maryline; Souty‐Grosset, Catherine; Nasri–Ammar, Karima

doi:10.1016/j.jsb.2015.12.005

Cited by 25 publications

(15 citation statements)

References 41 publications

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“…The transmission electron microscopy was conducted according to the protocol used by Ayari, Raimond, Souty‐Grosset, and Nasri‐Ammar () and Jelassi, Ghemari, et al (); Jelassi, Khemaissia, et al (). Individuals were sacrificed at the end of exposure and immediately immersed in Ringer's saline solution.…”

Section: Methodsmentioning

confidence: 99%

Physiological and histopathological responses of Porcellio laevis (Isopoda, Crustacea) as indicators of metal trace element contamination

Ghemari

Jelassi

Khemaissia

et al. 2020

Microscopy Res & Technique

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This study was designed to assess the impact of the mixture of cadmium (Cd) and zinc (Zn) on the bioaccumulation and the ultrastructural changes in the hepatopancreas of Porcellio laevis (Latreille, 1804) after 4 weeks of exposure to contaminated Quercus leaves under laboratory conditions. For each metal, four concentrations were used with four replicates for each concentration. Metal concentrations in the hepatopancreas and the rest of the body were determined using atomic absorption spectrometry. From the first week until the end of the experiment, a weight gain in P. laevis was observed particularly between the first and the end of exposure from 93.3 ± 18.22 mg fw to 105.22 ± 16.16 mg fw and from 106.4 ± 22.67 mg fw to 125.9 ± 23.9 mg fw for Mix1 and Mix4, respectively. Additionally, the determined metal trace elements (MTE) concentrations in the hepatopancreas were considerably higher compared to those in the rest of the body and seem to be dose‐dependent. Using transmission electron microscopy (TEM), some alterations were highlighted in the hepatopancreas. The main observed alterations were (a) the destruction of the microvilli border in a considerable portion of cells, (b) the increase of the lipid droplets with different shapes and sizes, (c) the increase in the number of the mitochondria, and (d) the appearance of TE in the form of B‐type granules. The obtained results confirmed the ability of P. laevis to deal with high amounts of MTE, suggesting its possible use in future soil's biomonitoring programs.

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Section: Methodsmentioning

confidence: 99%

Physiological and histopathological responses of Porcellio laevis (Isopoda, Crustacea) as indicators of metal trace element contamination

Ghemari

Jelassi

Khemaissia

et al. 2020

Microscopy Res & Technique

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“…Woodlice showing comparably effective adaptations to desert environments are H. reaumurii [26] and Venezillo arizonicus [77]. The latter two species possess protection against water loss through the cuticle which corresponds to a thicker and more calcified cuticle, thus reducing water evaporation in arid environments [53] and indicating that permeability to water has been reduced during adaptation to habitats with periodically or permanently low water availability. These physiological adaptations were, however, insufficient for coping with the harsh conditions of desert environments.…”

Section: Discussionmentioning

confidence: 99%

“…All of them are burrowing species. The model species H. reaumurii, widely distributed in North Africa, is an isopod, physiologically and morphologically, well adapted to terrestrial life with its respiratory organs [51], its water balance, and its resistance to temperature [52,53]. However, based solely on these adaptations, the species could not exist in the current biotopes.…”

Section: Introductionmentioning

confidence: 99%

Behavioral and Reproductive Strategies of Porcellio Species (Oniscidea) in Tunisian Pre-Desert Ecosystems

Medini-Bouaziz¹

2018

Community and Global Ecology of Deserts

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Oniscids inhabiting xeric habitats are of particular interest because these habitats may be one of the important agents for desert soil fertility. Although numerous studies have examined the relationship between the environment and population ecology in woodlice that live in mesic habitats, very little is known about these desert species. Tunisia is known for its arid regions south of the Tunisian Dorsal, habitats in which several species of terrestrial isopods are well adapted. Porcellio is the most widely represented within these habitats: their species richness reaches eight in arid bioclimatic stage. The most widespread of the Porcellio is P. buddelundi, and the least widespread is P. albicornis. Behavioral and reproductive studies carried out in Zarat and Matmata on the two species P. albinus and P. buddelundi showed that the xeric Porcellio species are mainly active at night and they shelter from the extreme heat and dryness of their habitats either in burrows they dig or by vertical migration. The reproductive pattern is seasonal with two breeding seasons. Life history traits allow P. buddelundi to be an r-strategist and P. albinus a k-strategist. The latter displays a fairly developed social behavior, which allowed him to be the most evolved of Porcellio.

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“…For the transmission electron microscopy, we adopted the protocol described in Ayari, Raimond, Souty‐Grosset, and Nasri‐Ammar () and Jelassi et al (). At the end of the exposure, individuals were sacrificed.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of trace element contamination usingArmadillo officinalisDuméril, 1816 (Crustacea, Isopoda) as a tool: An ultrastructural study

Khemaissia¹,

Jelassi²,

Ghemari³

et al. 2019

Microscopy Res & Technique

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To estimate trace element bioaccumulation in Armadillo officinalis, specimens were collected from Ghar El Melh lagoon then exposed for 3 weeks in contaminated sediments with copper, zinc, and cadmium. From the first week until the end of the experiment, a decrease in A. officinalis growth related to the increase of Cd concentration in the sediment was recorded. However, a mass gain was highlighted under Cu and Zn exposures. At the end of experiment, body metal concentrations were measured using flame atomic emission spectrometry. Results of the bioaccumulation factor showed that the species could be considered as a macroconcentrator of copper (BAF > 2) and a deconcentrator of zinc (BAF < 2). Microscopy observations of hepatopancreas cells showed morphological and histological changes even at the lowest concentration. They consisted in the microvillus border destruction, lipid droplets modifications, trace element accumulation, and the condensation of the majority of cellular organelles. The degree of these alterations was found to be dosedependent. Through these results, the isopod A. officinalis could be used as relevant monitor organisms for soil metal contamination. K E Y W O R D S bioaccumulation, storage organ, terrestrial isopod, trace element, transmission electron microscopy

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Hierarchical organization of the cuticle of the subsocial desert isopod, Hemilepistus reaumurii

Cited by 25 publications

References 41 publications

Physiological and histopathological responses of Porcellio laevis (Isopoda, Crustacea) as indicators of metal trace element contamination

Physiological and histopathological responses of Porcellio laevis (Isopoda, Crustacea) as indicators of metal trace element contamination

Behavioral and Reproductive Strategies of Porcellio Species (Oniscidea) in Tunisian Pre-Desert Ecosystems

Evaluation of trace element contamination usingArmadillo officinalisDuméril, 1816 (Crustacea, Isopoda) as a tool: An ultrastructural study

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