Effect of pH on survival, reproduction, egg viability and growth rate of five closely related rotifer species

Yin, Xu Wang; Niu, Cui Juan

doi:10.1007/s10452-007-9136-9

Cited by 28 publications

(15 citation statements)

References 26 publications

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“…Moreover, reproduction depletes somatic energy reserves greatly (e.g., protein and lipid), thus limiting the energy expenditure for protecting the animal from predator, parasite, and competitor (Harshman and Zera 2006). At low pH conditions (pH \ 6), feeding, respiration, and sodium balance of zooplankton species may be impaired greatly (Kring and O'Brien 1976;Potts and Fryer 1979;Alibone and Fair 1981), resulting in high egg mortality, low individual survival, and negative population growth rate in B. patulus (Yin and Niu 2008). Therefore, there will be energy trade-offs between reproduction or survival and repairing damage, which will result in the evident and obvious reproductive and survival costs under stressful pH conditions (especially pH 5) in the present study.…”

Section: Discussionmentioning

confidence: 98%

“…Each treatment was run in three replicates. The detailed processes to test the magnitude of pH of culture medium within 24 h and methods to regulate and minimize pH fluctuations were presented in Yin and Niu (2008).…”

Section: Methodsmentioning

confidence: 99%

“…The response of rotifers to different pH levels often results in a typical bell-shaped curve (Mitchell 1992;Yin and Niu 2008), showing that the survival, reproduction, and growth rate reached peak values at neutral pH levels (pH 7 and 8) and decreased at acid or alkaline pH levels (pH \ 7 or pH [ 8). Therefore we can use sublethal pH levels to simulate stressful conditions.…”

Section: Introductionmentioning

confidence: 99%

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Testing the cost of reproduction with the rotifer Brachionus patulus at different pH levels

Yin

Niu

2010

Limnology

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In the present work, we tested the hypothesis that the cost of reproduction was evident under stressful conditions with the rotifer Brachionus patulus at different pH levels (5-10 at 1 unit intervals). We used sublethal pH levels (pH 5, 9, and 10) to simulate stressful conditions. We analyzed the correlations between age-specific fecundity (m 1 , m 2 , m 3 , …) versus future survival (l x ? 1 , l x ? 2 , l x ? 3 , … for the entire lifespan) (survival costs) and future expectation of reproduction. . . for the entire lifespan) (reproductive costs), using the data obtained from life table demographic studies of B. patulus under stressful and favorable (pH 6, 7, and 8) pH levels. The results showed that significant negative correlations were observed between age-specific fecundity and future survival and future expectation of reproduction at all tested pH levels, indicating that costs of reproduction exist in the rotifer B. patulus under stressful and favorable pH conditions. However, the percentage of statistically significant negative correlations from total correlations of survival and reproductive costs differed greatly, depending on the tested pH conditions. The percentage of significant negative correlation of reproductive costs is significantly higher under stressful pH conditions (pH 5, 9, and 10) than favorable pH conditions (pH 6, 7, and 8). For survival costs, the same trends are also observed, suggesting that the costs of reproduction were more obvious under stressful pH than favorable pH.

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Section: Discussionmentioning

confidence: 98%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Testing the cost of reproduction with the rotifer Brachionus patulus at different pH levels

Yin

Niu

2010

Limnology

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“…A acidez da água pode agir como um fator de aumento de mortalidade para diversos organismos aquá-ticos zooplanctônicos. 32 Dos pontos de amostragem, um reservatório de bromélia do ponto P7 foi o que apresentou pH mais ácido (0,7) e o pH menos ácido (6,30) ) e a menor concentração em uma folha de bromélia do ponto P5 (9,63 mg g -1 ). Avaliando os dados para o elemento sódio, que estão compreendidos na faixa de 2,00 -24,09 mg g -1 , verifica-se que não há muita diferença entre os resultados.…”

Section: Análise Das Amostrasunclassified

DETERMINATION OF METALS IN WATER AND LEAF OFAechmea blanchetiana(Baker) L.B

Ribeiro¹,

Siqueira²,

Novaes³

et al. 2016

Química Nova

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The aim of this research was to determine the concentrations of calcium, iron, manganese, zinc, potassium and sodium in the water and leaves of Aechmea blanchetiana (Baker) L.B species collected between the cities of Ilhéus and Itacaré, Bahia, Brazil and verify if the metals found in the water can be absorbed by the leaves. Flame atomic absorption spectrometry (F AAS) and flame photometry were used for the determination of metals. pH measurements, dissolved oxygen and water temperature were also made. The results obtained were used in an exploratory analysis. Principal component analysis (PCA) showed clearly the distinct formation of two clusters and the correlation analysis indicated that the leaves of A. blanchetiana seem to absorb iron, calcium, manganese and zinc from the water tank.Keywords: Bromeliaceae; Aechmea blanchetiana; metals; water and leaves. INTRODUÇÃOA Aechmea blanchetiana (Baker) L.B é uma espécie da família Bromeliaceae Juss., um importante táxon vegetal, com 58 gêneros e 3.172 espécies.1 O embricamento das folhas em forma de roseta, em muitas espécies, forma um reservatório (fitotelma) onde se acumula água e nutrientes, por isso essas bromélias são conhecidas como bromélias-tanque. Este microhabitat é utilizado como abrigo e para reprodução por diversos organismos, como algas, bactérias, anfíbios, rép-teis e insetos, sendo inclusive o único ambiente onde algumas espécies podem sobreviver.2 Esses organismos deixam restos de suas atividades metabólicas no reservatório, tornando-o um local rico em nutrientes e um importante microhabitat nos ecossistemas dos quais fazem parte.3 Na família Bromeliaceae a captação de nutrientes também ocorre pelos tricomas foliares, especialmente as bromélias epífitas, que utilizam essas estruturas como única forma de obtenção de água e nutrientes. 4 Estes tricomas acabam absorvendo também poluentes atmosféricos e, por isso, são muito úteis para o biomonitoramento de contaminação atmosférica. 5,6 Essa característica faz com que esses organismos sejam bastante utilizados como uma ferramenta efetiva e de baixo custo para a avaliação da deposição de elementos traço. 7,8 Zampieri et al. avaliaram a absorção e translocação de Ca, Co, Fe, K e Zn em Aechmea blanchetiana com plantas cultivadas in vitro em meios de cultivo contendo diferentes concentrações de Zn. A espécie apresentou tolerância a altos níveis do metal, possibilitando a utilização no biomonitoramento de áreas contaminadas por Zn. Giampaoli et al. estudaram o crescimento e desenvolvimento de Aechmea blanchetiana com plantas in vitro na presença de Cu e Zn. Acúmulo significante ocorreu para os dois elementos, caracterizando a espécie como capaz de bioacumular esses metais.10 Além de absorver água e nutrientes, alguns autores citam as bromélias como fontes de criadouros de Aedes aegypti. 11,12O uso de organismos vivos na caracterização ambiental tem sido cada vez mais frequente, uma vez que estes auxiliam no mapeamento espacial e temporal da poluição atmosférica e das oscilações naturais ocorridas nos ecossiste...

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“…Brachionus angularis is a cosmopolitan freshwater rotifer species [1][2][3][4]. A strain of B. angularis was recently found in water samples obtained from Laos (UTAC-Lao strain).…”

Section: Introductionmentioning

confidence: 99%

Use of the freshwater rotifer Brachionus angularis as the first food for larvae of the Siamese fighting fish Betta splendens

Ogata

Kurokura

2011

Fish Sci

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Larvae of the Siamese fighting fish Betta splendens were reared on the mass-cultured small freshwater rotifer Brachionus angularis Laos strain (UTACLao), Paramecia sp., and Artemia as live food sources. Larvae fed live food were found to have a significantly high survival rate (97.5-100%) 18 days after hatch (DAH) in comparison to the control unfed larvae, which died by 12 DAH. Rotifer-fed larvae were found to grow faster than paramecia-fed larvae. The fastest growth rate was observed in larvae fed a combination of rotifer and Artemia, with growth in these larvae increasing by 282% by 18 DAH [total length (TL) 11.3 ± 1.2 mm] relative to body measurements taken 3 DAH. The next fastest growth rate was observed in rotifer-fed larvae, with a 158% increase in growth observed by 18 DAH (TL 7.6 ± 0.5 mm). The paramecia-fed larvae were found to grow by only 54.3% (TL 4.6 ± 0.1 mm) during the same period.

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Effect of pH on survival, reproduction, egg viability and growth rate of five closely related rotifer species

Cited by 28 publications

References 26 publications

Testing the cost of reproduction with the rotifer Brachionus patulus at different pH levels

Testing the cost of reproduction with the rotifer Brachionus patulus at different pH levels

DETERMINATION OF METALS IN WATER AND LEAF OFAechmea blanchetiana(Baker) L.B

Use of the freshwater rotifer Brachionus angularis as the first food for larvae of the Siamese fighting fish Betta splendens

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