A Comparative Study on the Buoyancy of Resting Eggs from Different Artemia Populations, with Emphasis on Its Relationships with Habitat Salinity and Biometric Characters of Resting Eggs

Zhou, Jiantao; Huang, Zhike; Guo, Yan; Sun, Shichun

doi:10.1007/s11802-022-5031-1

Cited by 2 publications

(2 citation statements)

References 27 publications

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“…The resting egg (often mentioned as “cyst” in literatures), which represents the diapause stage in Artemia lifecycle and allows Artemia to overwinter and survive harsh conditions (Iwasaki, 1973; Lavens & Sorgeloos, 1987; Mazzini, 1978; Morris & Afzelius, 1967), is a gastrula of 3000–4000 cells surrounded by a complex shell (Clegg & Conte, 1980; Wang & Sun, 2007a). The eggshell plays an important role in the survival strategy of Artemia resting eggs, for example, providing protection against mechanical disruption and UV radiation (Lavens & Sorgeloos, 1996), providing floating capacity (Abatzopoulos et al, 2006; Drinkwater & Crowe, 1991; Zhou et al, 2022), maintaining the ionic balance (Sugumar & Munuswamy, 2006), modulating hydration/dehydration, and preventing the penetration of harmful substances (Morris & Afzelius, 1967). Thus, studies of shell structure are of great significance for understanding its relationship with the biological characteristics of resting eggs.…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies have shown that the characteristics of Artemia resting eggs might be related to the adaptation to their habitats. For instance, the color of the shell is correlated with the Fe‐content of food, low oxygen, high temperature (leading to low oxygen) (Vos et al, 1984), and UV intensity (Zhou et al, 2003); the shell thickness is correlated with the buoyancy of resting eggs (Abatzopoulos et al, 2006; Drinkwater & Crowe, 1991; Zhou et al, 2022), and the buoyancy is related to the adaptation to habitat salinities (Zhou et al, 2022); the hypoplastic OCM may be related to the adaptation to high altitude (Wang et al, 2010; Wang & Sun, 2007b). Aiming to uncover the unknown diversity in the fine structure of resting eggshells, and to gain new evidences for understanding the relationship between shell structure and adaptation of Artemia resting eggs to habitat environment, the eggshells of 13 Artemia populations were studied by TEM in this work.…”

Section: Introductionmentioning

confidence: 99%

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Ultrastructural diversity in the shell of Artemia resting eggs

Li,

He,

Chang

et al. 2024

Microscopy Res & Technique

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The shell of Artemia resting egg, which is a delicate multilayered envelope surrounding the inside diapause embryo, plays an important role in the survival strategy of Artemia. To date, the ultrastructure of resting eggshell has been studied for only handful populations, and knowledge about the diversity of shell structure is still limited. In this paper, resting eggs from 13 Artemia populations were studied by transmission electron microscopy. Results show that the basic configuration of resting eggshell is quite conservative, but variations are not uncommon in the fine ultrastructure of each main layer of the shell (e.g., the shape and distribution of the radially oriented pores in the cortical layer; the size, number and arrangement of chambers in the alveolar layer; and the development state of outer cuticular membrane [OCM]). The ultrastructural variation of eggshell seems not to be linked with species and reproductive mode of Artemia. Resting eggs from very high habitats (4300+ m above sea level [a.s.l.]) on Qinghai–Tibet Plateau and certain tropical salterns have a hypoplastic OCM, which may be related to the adaptation to habitat conditions such as low oxygen concentration.Research Highlights Comparative study on resting eggs from 13 Artemia populations reveals high diversity in the fine structure of eggshell. Resting eggs from very high (4300+ m a.s.l.) habitats commonly have a hypoplastic OCM.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ultrastructural diversity in the shell of Artemia resting eggs

Li,

He,

Chang

et al. 2024

Microscopy Res & Technique

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Biological characteristics of crustaceans Artemia sp. from the diverse hypergaline reservoirs of the Kulunda Plain

Vesnina,

Romanova,

Lassyy

et al. 2024

Vestnik of Astrakhan State Technical University. Series: Fishing Industry

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For the first time, biometric parameters of cysts and nauplii from populations of hypergaline lakes Bol’shoe Shklo and Malinovoe, and incubation features of cysts from populations of lakes Bol’shoe Shklo, Malinovoe, Maloe Yarovoe, Kulundinskoye, Kuchukskoye were determined. Significant inter-population differences in the biometric characteristics of Artemia sp. were revealed in all the lakes studied. The variability of the biometric parameters of nauplii and artemia cysts is due to the physical and chemical differences in the living conditions of each studied population discovered during the study. The average values of cyst diameter and linear sizes of nauplii (Instar I) of the studied five populations were in the range of 237.4 ± 11.8 – 250.6 ± 14.3 microns, 412.9 ± 27.4 – 463.3 ± 24.6 microns, respectively. The smallest cysts were found in lake Bol’shoe Shklo and lake Malinovoe. The smallest nauplii were derived from the cysts of the population living in lake Bol’shoe Shklo. A high positive correlation was established between the sizes of cysts and nauplii of the studied artemia populations. Experiments to study the effect of the concentration of dietary salt (98.4% NaCl) on the hatchability of nauplii have shown that for populations of artemia from lakes Malinovoe, Kulundinskoye and Kuchukskoye environments with concentrations of 25 g/l were the most favorable for breeding nauplii, while lake Maloe Yarovoe had concentrations of 10 and 25 g/l. Cysts from lake Bol’shoe Shklo population showed identical excretion in all studied salt concentrations. The optimal environmental parameters for breeding nauplii vary depending on the origin of the population. The differences in the hatchability conditions of artemia nauplii should be taken into account during the experiments and especially for the successful incubation and cultivation of artemia in fish farms.

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A Comparative Study on the Buoyancy of Resting Eggs from Different Artemia Populations, with Emphasis on Its Relationships with Habitat Salinity and Biometric Characters of Resting Eggs

Cited by 2 publications

References 27 publications

Ultrastructural diversity in the shell of Artemia resting eggs

Ultrastructural diversity in the shell of Artemia resting eggs

Biological characteristics of crustaceans Artemia sp. from the diverse hypergaline reservoirs of the Kulunda Plain

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