Environmental factors affecting hatching of rotifer (Brachionus plicatilis) resting eggs

Minkoff, G.; Lubzens, Esther; Kahan, David

doi:10.1007/bf00045953

Cited by 61 publications

(41 citation statements)

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“…This knowledge may provide some insight into when hatching should occur in situ, but very few data are available on when, or to what extent, hatching actually occurs during the year in natural systems. (Pourriot et al 1983), B. calyciflorus (Pourriot et al 1982), B. plicatilis (Blanchot and Pourriot 1982b;Minkoff et al 1983;Hagiwara and Hino 1989;Hagiwara et al 1989Hagiwara et al , 1995, Brachionus rubens (Pourriot et al 1980(Pourriot et al , 1981Blanchot and Pourriot 1982a), and E. senta and R. frontalis (Schröder unpubl. data).…”

Section: Time Of Hatching From Diapausing Fertilized Eggsmentioning

confidence: 99%

“…In B. plicatilis, however, there is no strong evidence for or against such a pattern. In a strain of the species from Israel, Minkoff et al (1983) found that optimal hatching occurred at 16‰ and indicated that this salinity also was optimal for population growth. Hagiwara et al (1989) found that both population growth and hatching of diapausing eggs in Brachionus rotundiformis occurred at high rates for a broad range of salinities (8-32‰).…”

Section: Hatching Environments-detailed Laboratory Investigations Of mentioning

confidence: 99%

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Rotifers from diapausing, fertilized eggs: Unique features and emergence

Gilbert

Schröder

2004

Limnology & Oceanography

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Sexual reproduction in cyclically parthenogenetic rotifers results in the production of diapausing, fertilized (resting) eggs, which can survive for decades in sediment egg banks. Stem females hatching from these eggs can differ from genetically identical ones produced in subsequent parthenogenetic generations. Differences involve the inhibition of sexual reproduction, which may persist for many parthenogenetic generations; reduced morphology (apterous Polyarthra, shorter-spined Brachionus); and larger stores of lipid. These features of stem females may facilitate colonization by favoring population growth via female parthenogenesis and by decreasing food requirements for survival and reproduction. Fertilized eggs in dried sediments probably hatch soon after being flooded by rising water levels. Eggs in permanently submerged sediments may be in environments that inhibit hatching (e.g., darkness, low water temperature, low dissolved oxygen) and hatch only when brought to the sediment surface or resuspended into the water column by currents or bioturbation. Laboratory experiments show that the hatching of diapausing, fertilized eggs can require light and temperatures suitable for population development or specific changes in temperature consistent with a new growing season. The limited data that exist on their emergence from fertilized eggs in natural systems come from sediment traps, from the occurrence in the water column of apterous Polyarthra or empty egg shells, and from calculations of negative mortality rates of planktonic populations. Fertilized eggs often hatch at the beginning of the growth season but may continue to hatch intermittently thereafter. The extremely high genotypic diversity of some natural rotifer populations indicates extensive hatching of stem females from the sediment egg bank.

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Section: Time Of Hatching From Diapausing Fertilized Eggsmentioning

confidence: 99%

Section: Hatching Environments-detailed Laboratory Investigations Of mentioning

confidence: 99%

Rotifers from diapausing, fertilized eggs: Unique features and emergence

Gilbert

Schröder

2004

Limnology & Oceanography

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“…They differ morphologically from the amictic or asexually produced eggs (Wurdak et al, 1978 andreviewed in Gilbert, 1989). The diapausing embryos will resume development and hatch after an obligatory dormant period, in response to specific cues such as light, temperature, salinity, hydrogen peroxide and prostaglandins (Minkoff et al, 1983;Hagiwara et al, 1995). The hatched eggs usually develop into asexually reproducing amictic females (FA), until they encounter a mixis signal directing them to embark on sexual reproduction.…”

Section: Introductionmentioning

confidence: 99%

The expression pattern of dormancy-associated genes in multiple life-history stages in the rotifer Brachionus plicatilis

et al. 2010

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Rotifer resting eggs retain their viability for several decades in a non-desiccated form and are of interest in discerning the processes associated with dormancy, since in most organisms this phenomenon is linked with desiccation. The expression pattern of candidate genes with biological functions associated with dormancy in several other organisms was examined in rotifers. High-throughput transcriptome profiling revealed three patterns of gene expression in resting eggs: (1) relatively highly expressed genes coding for LEA proteins and putative paralogs of the small heat shock protein family (shsp); (2) genes coding for ferritin (ferr), glutathione-6-transferase (gts) and HSP70, where some of the putative gene paralogs of these families show relatively high expression levels and other putative paralogs show relatively low expression levels in resting eggs; and (3) genes with relatively low expression levels in resting eggs, for trehalose-6-phosphate synthase (tps), fatty-acid binding proteins (fab) and of lipoprotein lipase (lpl) and the aquaporins gene family (aqp). Changes in the expression pattern of some members of putative gene families occurred during the obligatory dormant period of resting eggs. A transition was observed from an expression pattern of diapausing embryos to an expression pattern of amictic females, during hatching. Differences were also found in the expression pattern in the different types of females, especially in those carrying resting eggs, and in males compared with females. These results suggest putative functional significance to genes associated with dormancy in non-desiccated resting eggs. It could also be proposed that their occurrence in resting eggs is developmentally programmed to facilitate survival in case of desiccation.

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“…In the present study the hatching rate was 94,3% when food was C. muelleri. Minkoff, Lubzens and Kahan (1983) mentioned that at 9‰ salinity, hatching of B. plicatilis was optimal (40-70%) when the temperature was 10-30° C and decreased linearly with rise in incubation temperature. Light was obligatory for termination of dormancy.…”

Section: Discussionmentioning

confidence: 99%

Population growth and cyst production of the rotifer Brachionus plicatilis (Monogonta: Brachionidae) fed with three different diets

Ortega-Salas

Reyes

Reyes-Bustamante

2013

URJ

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This study compares the effect of different diets on population growth, fecundity rate, production, and cyst hatching efficiency of the rotifer Brachionus plicatilis. Microalgae were cultured using filtered and sterilized seawater at 25 and 26°C. The volume of the containers for algae, bread yeast, and rotifer was duplicated daily from 31mL to 16L in nine days. Rotifers were cultured at 25°C and 35‰ salinity. The mean values of daily population growth rate for the rotifers fed on C. muelleri, I. galbana and bread yeast were 0,91, 0,89 and 0,87 daily counts, respectively. After 10 cultured days, fecundity was 72%, 63% and 36% using C. muelleri, I. galbana and bread yeast, respectively. The highest mean value for cysts production was 4 064 000 cysts found from 63 243 (1,55%) rotifers fed on C. muelleri. Hatching efficiency after 36 hours of cysts from rotifers fed C. muelleri was 51 500 (94,3%) new borns, followed by 45 000 (93,3%) with I. galbana, and 31 000 (92,6%) with bread yeast. C. muelleri is a good food source for B. plicatilis. KEY WORDSFecundity, feeding, hatching, salinity, temperature RESUMEN Este estudio compara el efecto de la dieta alimenticia en el crecimiento poblacional, la tasa de fecundidad, producción y eficiencia de desove de quistes en el rotífero Brachionus plicatilis. Para la producción de microalgas, el agua marina se filtró sucesivamente y se mantuvo entre 25° y 26°C. El volumen de los contenedores para algas, levadura y rotíferos se duplicó diariamente de 31mL a 16L en nueve días. Los rotíferos se mantuvieron a temperaturas de 25°C y salinidad de 35‰. La tasa de crecimiento de los rotíferos por día fue de 0,91 alimentados con C. muelleri, 0,89 con I. galbana y de 0,87 con levadura. La fecundidad de los rotíferos 10 días fue de 0,72 cuando fueron alimentados con C. muelleri, 0,63 con I. galbana y 0,36 con levadura. La producción más alta de quistes fue de 63 243 (1,55%) a partir de 4 064 000 rotíferos cuando se alimentan con C. muelleri. La eficiencia de desove de quistes de rotíferos alimentados con C. muelleri fue de 51 500 (94,6%) de neonatos después de 36 horas, 45 000 (93,3%) con la dieta de I. galbana y de 31 000 (92,6%) con levadura. C. muelleri mostró ser una buena fuente de alimentación. Alimentación, desove, fecundidad, temperatura, salinidad In order to expand the practice of marine finfish larvae rearing, it is necessary to increase and stabilize the production of live feed. The technology is based on the use of highly concentrated algal biomass as food for the rotifers. Villegas, Millamena and Escritor (2008) studied the effects of three selected algal species, Tetraselmis tetrahele, Isochrysis galbana, and marine Chlorella sp., on the population growth of Brachionus plicatilis after three, five and seven days of culture. The rotifers fed on T. tetrahele showed growth with a mean peak density of 92,5 individuals per mL. This result was superior to those fed on I. galbana (48,2 individuals per mL) and Chlorella sp. (47,2 individuals per mL) in five days. Rotifers a...

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Environmental factors affecting hatching of rotifer (Brachionus plicatilis) resting eggs

Cited by 61 publications

References 20 publications

Rotifers from diapausing, fertilized eggs: Unique features and emergence

Rotifers from diapausing, fertilized eggs: Unique features and emergence

The expression pattern of dormancy-associated genes in multiple life-history stages in the rotifer Brachionus plicatilis

Population growth and cyst production of the rotifer Brachionus plicatilis (Monogonta: Brachionidae) fed with three different diets

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