Comparison of heavy metal toxicity in life stages (spermiotoxicity, egg toxicity, embryotoxicity and larval toxicity) of Hydroides elegans

Gopalakrishnan, Subramaniam; Thilagam, H.; Raja, P. Vivek

doi:10.1016/j.chemosphere.2007.09.062

Cited by 85 publications

(45 citation statements)

References 38 publications

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“…In the present study, the concentration of Cd and Cr to which the microorganisms were exposed were similar to the values observed in impacted aquatic systems. However, the concentration of organic and inorganic ligands in the natural waters normally exceeds the trace metal concentrations (Gopalakrishnan et al 2008), thereby forming the complexes and rending the metal ions less bioavailable to the aquatic organisms. Because free metal concentrations are closely related to the bioavailable fraction of the total dissolved metal, the metals toxicity was related it directly to the free ion species in the culture media.…”

Section: Resultsmentioning

confidence: 99%

Cadmium and Chromium Toxicity to Pseudokirchneriella subcapitata and Microcystis aeruginosa

Rodgher

Espíndola

Simões

et al. 2012

Braz. arch. biol. technol.

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Section: Resultsmentioning

confidence: 99%

Cadmium and Chromium Toxicity to Pseudokirchneriella subcapitata and Microcystis aeruginosa

Rodgher

Espíndola

Simões

et al. 2012

Braz. arch. biol. technol.

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“…In the present investigation, the data obtained showed that the values of male gonado-somatic index of Oreochromis niloticus were higher at RN than that in LM giving an idea about the exert effect of high level of pollution in LM. Such effect was reflected by the decrease of sperm account in the ripe testes during the spawning season as a result of high heavy metal concentration [30].…”

Section: Discussionmentioning

confidence: 99%

Impact of Environmental Contaminants on the Testes of Oreochromis niloticus with Special Reference to Ultrastructure of Spermatozoa in Lake Manzala (Egypt)

Shalaby¹,

Migeed²

2012

J Environ Anal Toxicol

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IntroductionThe importance of Nile tilapia, Oreochromis niloticus in aqua cultures is due to its spreading in most countries of the world [1]. It breads in captivity and wide variety of water conditions [2]. Lake Manzalah (LM) is one of the most important lakes in Egypt that provides more than 70% of the total fishery of the country [3] and considered as a highly polluted with toxic heavy metals and pesticides due to progressive increase of industrial and agricultural drainage, as well as sewage out fall from the surrounding governorates [4]. The mean values of some heavy metals (Cd, Pb, Fe, Cr and Mn) recorded in LM were higher than the world permissible levels [5] and according to the Egyptian laws [6]. Such heavy metals are not lethal to fish, but concentrated in their flesh and create a hazard to the consumer [7,8]. Cd, Pb, Zn, and Cr are considered the main causes of pollution in aquatic ecosystem [9]. The serious effect of these metals is derived from their persistence, toxicity and bioaccumulation, and consequently exert dangerous problem to man [10]. Experimental studies on heavy metals proved that they could impair the respiratory functions of the gills; consequently death in fish is probably caused by tissue hypoxia [11]. Metals affect not only the fish morphology, but also all biological activities [12]. Among the heavy metals; Cd and Pb are the serious heavy metals that produce histopathological alterations including liver damage [13], respiratory dysfunctions [14], testicular and ovarian alterations [15][16][17]. These pathological alterations were primarily attributed to damage of cell membranes which allows higher uptake of Cd and Pb and thus the injury extends to more critical targets [18]. Many studies focused on bioaccumulation of heavy metals in fish and biological studies. Thus we aimed in this work to study the testicular histopathological alterations of Oreochromis niloticus using light microscope and the mature sperm using TEM. Materials and Methods Samples collectionSamples of water and 48 specimen of Nile tilapia, Oreochromis niloticus about 14-20 cm in length and 120-200 g in weight were collected from two areas; Demitta branch of RN at Mansoura city as a control site and LM as a polluted area during the spawning season from March-June and transported to the laboratory in tanks provided with oxygen pump. The fish were weighed, dissected and the testes were Abstract Background: Pollution of the aquatic environment by inorganic and organic chemicals is a major factor posing serious threat to the survival of aquatic organisms including fish. Lake Manzala (LM) is one of the Egypt's northern Delta Lakes situated on the Mediterranean Coast of the Delta. It is affected by drainage water polluted by different heavy metals that their concentrations exceed the maximum world permissible levels.

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“…For the anemone, Aiptasia pulchella, the acute endpoint of tentacle retraction was measured over 12 h and the calculated EC50 values ranged from 1400-3300 µg Ni L -1 (Howe et al 2014 a; Table 6). Hydriodes elegans, a tropical polycheaete, was also found to be relatively sensitive to nickel, with 50% inhibition of adult survival over 96 h (EC50) of 1500 µg Ni L -1 (Gopalakrishnan et al 2008; Table 5). …”

Section: Tropical Nickel Toxicity Data Marinementioning

confidence: 99%

“…The polychaete H. elegans was again one of the most sensitive species based on chronic larval settlement. After 96-h exposures, the EC50 was 160 µg Ni L -1 (Gopalakrishnan et al 2008; Table 5). The coral Platygyra daedalea was relatively insensitive to nickel; the 5-h fertilisation success was inhibited by 50% (EC50) at 1420 µg Ni -1 L (Reichelt-Brushett and Hudspith 2016; Table 6).…”

Section: Tropical Nickel Toxicity Data Marinementioning

confidence: 99%

A review of nickel toxicity to marine and estuarine tropical biota with particular reference to the South East Asian and Melanesian region

Gissi

Stauber

Binet

et al. 2016

Environmental Pollution

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. (2016). A review of nickel toxicity to marine and estuarine tropical biota with particular reference to the South East Asian and Melanesian region. Environmental Pollution, 218 1308Pollution, 218 -1323 A review of nickel toxicity to marine and estuarine tropical biota with particular reference to the South East Asian and Melanesian region AbstractThe South East Asian Melanesian (SEAM) region contains the world's largest deposits of nickel lateritic ores. Environmental impacts may occur if mining operations are not adequately managed. Effects data for tropical ecosystems are required to assess risks of contaminant exposure and to derive water quality guidelines (WQG) to manage these risks. Currently, risk assessment tools and WQGs for the tropics are limited due to the sparse research on how contaminants impact tropical biota. As part of a larger project to develop appropriate risk assessment tools to ensure sustainable nickel production in SEAM, nickel effects data were required. The aim of this review was to compile data on the effects of nickel on tropical marine, estuarine, pelagic and benthic species, with a particular focus on SEAM. There were limited high quality chronic nickel toxicity data for tropical marine species, and even fewer for those relevant to SEAM. Of the data available, the most sensitive SEAM species to nickel were a sea urchin, copepod and anemone. There is a significant lack of high quality chronic data for several ecologically important taxonomic groups including cnidarians, molluscs, crustaceans, echinoderms, macroalgae and fish. No high quality chronic nickel toxicity data were available for estuarine waters or marine and estuarine sediments. The very sparse toxicity data for tropical species limits our ability to conduct robust ecological risk assessment and may require additional data generation or readacross from similar species in other databases (e.g. temperate) to fill data gaps. Recommendations on testing priorities to fill these data gaps are presented. Capsule abstractNickel toxicity data is lacking for tropical marine biota; data is required for key taxa including cnidarians, molluscs, crustaceans, echinoderms, macroalgae and fish. HighlightsSouth East Asia and Melanesia contains the largest deposits of nickel lateritic ores Environmental impacts may occur if mining operations are not adequately managed Risk assessment tools for nickel in the tropics are limited due to lack of data We compiled nickel data for aquatic tropical ecosystems and identified key gaps Nickel data is required for corals, molluscs, crustaceans, echinoderms, macroalgae, fish KeywordsMining, tropical ecotoxicology, ecological risk assessment, bioassay, species sensitivity distribution. 2 AbstractThe South East Asian Melanesian (SEAM) region contains the world's largest deposits of nickel lateritic ores. Environmental impacts may occur if mining operations are not adequately managed. Effects data for tropical ecosystems are required to assess risks of contaminant exposure and to derive water quality ...

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Comparison of heavy metal toxicity in life stages (spermiotoxicity, egg toxicity, embryotoxicity and larval toxicity) of Hydroides elegans

Cited by 85 publications

References 38 publications

Cadmium and Chromium Toxicity to Pseudokirchneriella subcapitata and Microcystis aeruginosa

Cadmium and Chromium Toxicity to Pseudokirchneriella subcapitata and Microcystis aeruginosa

Impact of Environmental Contaminants on the Testes of Oreochromis niloticus with Special Reference to Ultrastructure of Spermatozoa in Lake Manzala (Egypt)

A review of nickel toxicity to marine and estuarine tropical biota with particular reference to the South East Asian and Melanesian region

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