Effect of inorganic mercury on the emergence and hatching of the brine shrimpArtemia franciscana

Abstract

Abstract.We describe the effect of inorganic mercury on the emergence, hatching and growth of Artemiafraneiscana (commercially obtained). At concentrations as low as 0.01/tmol 1-1, mercury delays development of the organism, but the effect on the final number of developed brine shrimp is small. At higher concentrations, mercury has a dramatic effect, inhibiting the developmental process at the emergence and hatching stages. As recorded by light and scanning electron microscopy, organisms stalled at emergence are not immediately killed. Their eye spots continue to darken and some may hatch although partially enclosed in the cyst shell. Completely emerged prenauplii in the presence of mercury often have an abnormal oval shape while hatched organisms may display shortened and deformed bodies and exhibit restricted movement. The results demonstrate that emerging A. franciscana are very sensitive to inorganic mercury and the potential usefulness of this organism for the study of metal effects upon physiological processes is indicated.

Toxicity Effect of Silver Nanoparticles in Brine ShrimpArtemia

“…The emergence and hatching curves crossed later in the mercury-exposed cysts than in the controls, with the delay being longer in cysts exposed to higher concentrations. This study reveals that the silver nanoparticles have effect not only on the alive animal but also on cysts [32]. Hence in this present study the results revealed that as the concentration of the silver nanoparticles increases (10 nM and 12 nM) the effect of toxicity increases and the percentage of hatching of the Artemia cysts decreases to 20%.…”

Toxicity Effect of Silver Nanoparticles in Brine ShrimpArtemia

“…The emergence and hatching curves crossed later in the mercury-exposed cysts than in the controls, with the delay being longer in cysts exposed to higher concentrations. This study reveals that the silver nanoparticles have effect not only on the alive animal but also on cysts [32]. Hence in this present study the results revealed that as the concentration of the silver nanoparticles increases (10 nM and 12 nM) the effect of toxicity increases and the percentage of hatching of the Artemia cysts decreases to 20%.…”

Real-time assessment of the impacts of polystyrene and silver nanoparticles on hatching process and early-stage development of Artemia using a microfluidic platform

“…The observed phenomenon may be associated with the elevated toxicity of metals, as previously observed in the presence of mercury 111 , cadmium 112 , zinc 112,113 , iron 113 , lead 113 , and nickel 113 which has been attributed to the increased hindrance to ion transport in the membranes of salt glands, responsible for producing osmotic potential 113,114 .…”

Group 1 LEA proteins contribute to the desiccation and freeze tolerance of Artemia franciscana embryos during diapause

“…In support of this proposal, H 2 O 2 at 0.003 % (1,060 μM) inhibits the emergence and hatching of nauplii (Robbins et al 2010). Artemia cysts exhibit abnormal hatching when incubated in medium with either mercury, zinc, cadmium, or potassium cyanide (Bagshaw et al 1986;Go et al 1990;Pandey and MacRae 1991;Rafiee et al 1986;Trotman et al 1980).…”

Toxicity Effect of Silver Nanoparticles in Brine ShrimpArtemia

“…The emergence and hatching curves crossed later in the mercury-exposed cysts than in the controls, with the delay being longer in cysts exposed to higher concentrations. This study reveals that the silver nanoparticles have effect not only on the alive animal but also on cysts [32]. Hence in this present study the results revealed that as the concentration of the silver nanoparticles increases (10 nM and 12 nM) the effect of toxicity increases and the percentage of hatching of the Artemia cysts decreases to 20%.…”

Real-time assessment of the impacts of polystyrene and silver nanoparticles on hatching process and early-stage development of Artemia using a microfluidic platform

“…The observed phenomenon may be associated with the elevated toxicity of metals, as previously observed in the presence of mercury 111 , cadmium 112 , zinc 112,113 , iron 113 , lead 113 , and nickel 113 which has been attributed to the increased hindrance to ion transport in the membranes of salt glands, responsible for producing osmotic potential 113,114 .…”

Group 1 LEA proteins contribute to the desiccation and freeze tolerance of Artemia franciscana embryos during diapause

“…In support of this proposal, H 2 O 2 at 0.003 % (1,060 μM) inhibits the emergence and hatching of nauplii (Robbins et al 2010). Artemia cysts exhibit abnormal hatching when incubated in medium with either mercury, zinc, cadmium, or potassium cyanide (Bagshaw et al 1986;Go et al 1990;Pandey and MacRae 1991;Rafiee et al 1986;Trotman et al 1980).…”

Toxicity Effect of Silver Nanoparticles in Brine ShrimpArtemia

“…The emergence and hatching curves crossed later in the mercury-exposed cysts than in the controls, with the delay being longer in cysts exposed to higher concentrations. This study reveals that the silver nanoparticles have effect not only on the alive animal but also on cysts [32]. Hence in this present study the results revealed that as the concentration of the silver nanoparticles increases (10 nM and 12 nM) the effect of toxicity increases and the percentage of hatching of the Artemia cysts decreases to 20%.…”

Real-time assessment of the impacts of polystyrene and silver nanoparticles on hatching process and early-stage development of Artemia using a microfluidic platform

“…The observed phenomenon may be associated with the elevated toxicity of metals, as previously observed in the presence of mercury 111 , cadmium 112 , zinc 112,113 , iron 113 , lead 113 , and nickel 113 which has been attributed to the increased hindrance to ion transport in the membranes of salt glands, responsible for producing osmotic potential 113,114 .…”

Group 1 LEA proteins contribute to the desiccation and freeze tolerance of Artemia franciscana embryos during diapause

“…In support of this proposal, H 2 O 2 at 0.003 % (1,060 μM) inhibits the emergence and hatching of nauplii (Robbins et al 2010). Artemia cysts exhibit abnormal hatching when incubated in medium with either mercury, zinc, cadmium, or potassium cyanide (Bagshaw et al 1986;Go et al 1990;Pandey and MacRae 1991;Rafiee et al 1986;Trotman et al 1980).…”