The effects of algae species and densities on the population growth of the marine rotifer, Colurella dicentra

Suchar, Vasile Alexandru; Chigbu, Paulinus

doi:10.1016/j.jembe.2006.06.015

Cited by 21 publications

(10 citation statements)

References 26 publications

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“…The maximum r observed in this study (r = 0.69 ± 0.01 day −1 for Nanno fed Ba at 20‰) was a quite high r value compared to the values obtained for different rotifer species in previous works (SUCHAR and CHIGBU, 2006). Most rotifers have r values less than or close to 1 day −1 (SARMA and NANDINI, 2002).…”

Section: Discussionsupporting

confidence: 55%

“…shown that the type of algae used as food affects rotifer production (SUCHAR and CHIGBU, 2006). Successful rotifer cultures have been accomplished using a few number of species of microalgae as feed.…”

Section: Discussionmentioning

confidence: 99%

“…An increasing number of studies have been carried out on the effects of salinity, temperature and the type and concentration of food on the demographic traits and population growth of rotifers (CABRERA et al, 1993;OLTRA and TODOLI, 1997;FIELDER et al, 2000;SARMA and NANDINI, 2002;ATHIBAI and SANOAMUANG, 2008). These studies were accomplished using several rotifer species (XI et al, 2001;SUCHAR and CHIGBU, 2006;WULLUR et al, 2009 …”

mentioning

confidence: 99%

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Population Growth of Six Iranian Brachionus Rotifer Strains in Response to Salinity and Food Type

Viayeh¹,

Mohammadi²,

Shafiei³

2010

International Review of Hydrobiology

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Intrinsic rates of population increase (r) were evaluated as a measure of population dynamics of four strains of Brachionus plicatilis and two strains of B. urceolaris from Iran in response to different salinities and feeding algae. Each rotifer strain was cultured at four salinities: 5, 20, 25 and 30‰ and fed with two microalgal species: Chlorella vulgaris and Nannochloropsis oculata. Salinity of 5‰ was critical for all the examined strains, at which r was at minimum and was different from the other salinities (P < 0.05). For B. plicatilis strains, the maximum r was observed in those fed on Chlorella at salinities of 10 and 30‰ (64 ± 0.01 day −1). While, in B. urceolaris, maximum r was for Nannochloropsis fed rotifers at salinity of 20‰ (0.69 ± 0.01 day −1). Maximum final population density (FD) was obtained for a strain of B. urceolaris fed on Nannochloropsis at 20‰ (329.3 ± 10.9 ind.mL −1). FD was relatively lower in B. plicatilis strains among all examined salinities. ANOVA showed the significant effect of salinity and rotifer strain, and algae × rotifer strain on both r and FD, and salinity × rotifer × algae on FD (P < 0.05). IntroductionRotifers are considered as ideal model organisms for various kinds of biological laboratory studies including population dynamics (YOSHINAGA et al., 1999;SARMA, 2006;SNELL and DESROSIERS, 2008). They have also become a valuable and, in many cases, indispensable food organism for first feeding of a large variety of cultured marine finfish and crustacean larvae (DOUILLET, 2000).Success in rotifer culture seems, to a great extent, to be dependent on providing adequate information on the life history characteristics and environmental preferences of each biotype. An increasing number of studies have been carried out on the effects of salinity, temperature and the type and concentration of food on the demographic traits and population growth of rotifers (CABRERA et al., 1993;OLTRA and TODOLI, 1997;FIELDER et al., 2000;SARMA and NANDINI, 2002;ATHIBAI and SANOAMUANG, 2008). These studies were accomplished using several rotifer species (XI et al., 2001;SUCHAR and CHIGBU, 2006;WULLUR et al., 2009

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Section: Discussionsupporting

confidence: 55%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Population Growth of Six Iranian Brachionus Rotifer Strains in Response to Salinity and Food Type

Viayeh¹,

Mohammadi²,

Shafiei³

2010

International Review of Hydrobiology

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“…The temperature required for the highest reproduction rate differs among clones and geographical strains (Lubzens et al 1989, 2001, Hotos 2002. Many studies have demonstrated that rotifer production is affected by the algae used as food (Cabrera et al 2005, Suchar andChigbu 2006) and that Chlorella vulgaris is one of the most commonly employed for that purpose (Hotos 2003). Salinity-through its major ecological and aquacultural influences-is a key environmental condition affecting the rotifer's growth and reproduction.…”

Section: Natural Populations Of the Euryhaline Rotifermentioning

confidence: 99%

Influence of temperature and conductivity on the life-history characteristics of a pampean strain of Brachionus plicatilis

Ferrando¹,

Claps²,

Benítez³

et al. 2018

An. Acad. Bras. Ciênc.

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In the present work, we provide the first approach about the life-history of Brachionus plicatilis in South America. We tested with laboratory experiments the response of the pampean strain of B. plicatilis for two of its main stressors (conductivity and temperature). We evaluated the effects of eight conductivity values from 1 to 17 mS.cm-1 and two temperatures (15 and 25 °C) to compare its abundance with those obtained in the pampean lotic and lentic environments, where this rotifer is frequent or dominant. The results demonstrated that the increase in population-growth rate and the peak of abundance occurred at the highest temperature and at medium conductivity. Minimum values were obtained at the lowest temperature and conductivities analyzed, but the final density attained was nevertheless similar to those recorded in the pampean environments at the optimum conductivity and during the spring and summer seasons. Males, mictic females, and resting eggs were observed at the minimum and maximum conductivities, revealing the strategy of this species for maintaining dominance in environments with fluctuating salinity. The experiments also indicated the possible behavior of this relevant member of the zooplankton community within a scenario of increasing temperature and salinity related to the climate changes occurring in the pampean region.

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“…The importance of the type of algal food (Rothhaupt, 1990;Suchar & Chigbu, 2006), food quantity (Galindo et al, 1993;Dumont et al, 1995), algal size (Rothhaupt, 1990;Yin & Zhao, 2008), and essential biochemical constituents of the algae such as phosphates and PUFA (Rothhaupt, 1995;Gulati & DeMott, 1997) on the population dynamics of rotifers is well known. Food level has significant effect on all life parameters of rotifers (Galindo et al, 1993;Sarma & Nandini, 2001).…”

Section: Impact Of Food and Salinity Levels On Population Growth Ratementioning

confidence: 99%

Effects of salinity, food level, and the presence of microcrustacean zooplankters on the population dynamics of rotifer Brachionus rotundiformis

Cheng¹,

Kumar

et al. 2011

Hydrobiologia

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We investigated the population dynamics of the rotifer Brachionus rotundiformis fed with the alga Isochrysis galbana at two food concentrations (3 9 10 4 and 40 9 10 4 cells ml -1 ) and four salinity levels (5, 10, 20, and 30) in the presence and absence of two copepod species, Pseudodiaptomus annandalei and Apocyclops royi and one cladoceran, Diaphanosoma aspinosum. Both the density and population growth rate of B. rotundiformis increased at higher food concentration and at salinity levels of 10 and 20. Among the microcrustaceans, only P. annandalei had a significant negative effect on the growth rate of the rotifer population because of its efficient predation. In contrast, the presence of both A. royi and D. aspinosum did not affect the growth rates at any of the salinity and food levels.Brachionus rotundiformis had significantly larger size during the log-phase, particularly if P. annandalei was present. Thus, B. rotundiformis grows better at higher food level and medium salinity levels. Unlike the larger calanoid, P. annandalei, B. rotundiformis can definitely coexist with relatively small cyclopoid copepods (A. royi) and cladocerans (D. aspinosum), because of the absence of interference.

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The effects of algae species and densities on the population growth of the marine rotifer, Colurella dicentra

Cited by 21 publications

References 26 publications

Population Growth of Six Iranian Brachionus Rotifer Strains in Response to Salinity and Food Type

Population Growth of Six Iranian Brachionus Rotifer Strains in Response to Salinity and Food Type

Influence of temperature and conductivity on the life-history characteristics of a pampean strain of Brachionus plicatilis

Effects of salinity, food level, and the presence of microcrustacean zooplankters on the population dynamics of rotifer Brachionus rotundiformis

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