Microbial communities in sea cucumber (<i>Apostichopus japonicus</i>) culture pond and the effects of environmental factors

Xu, Hui; Wang, Luo; Bao, Xueyu; Jiang, Ningjin; Yang, Xiaopei; Hao, Zhenlin; Chang, Yaqing; Ding, Jun

doi:10.1111/are.14002

Cited by 21 publications

(14 citation statements)

References 40 publications

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“…Previous study has confirmed that the composition and diversity of intestinal microbiota of middle-intestine were significantly different from the hind-intestine in the aquatic animal 24 , and the composition of intestinal microbiota in aquaculture animal was related to microbial community composition in sediment 21 , 25 . However, the bacterial composition of different parts of crab intestine and bacterial co-occurrence relationships between crab intestine and sediment remained unknown.…”

Section: Introductionmentioning

confidence: 70%

Profiling intestinal microbiota of Metaplax longipes and Helice japonica and their co-occurrence relationships with habitat microbes

Fan

et al. 2021

Sci Rep

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Intestinal microbiota plays key roles in maintaining the health and homeostasis of the host. However, information about whether the formation of intestinal microbiota of wild aquatic animals is associated with habitat microbes is not fully understood. Here, intestine samples were collected from two wild crab species and sediment samples were collected from the habitat environment. The total DNA of each sample was extracted, and the V3–V4 regions of 16S rRNA were sequenced using the MiSeq platform. The purpose of this study was to investigate the composition and diversity of intestinal microbiota and habitat microbes, and bacterial community relationships between wild crab intestine and habitat sediment. In the present study, the composition and diversity of intestinal microbiota of the two crab species were different from the habitat microbes. In contrast, a similar composition and diversity of the intestinal microbiota were observed between two crab species. Moreover, the bacterial community relationships between crab intestine and habitat sediment were associated with intestinal regions. Further network analysis revealed that the network structure of the intestinal microbiota was not only associated with intestinal regions, but also with the crab species. Additionally, although the compositions of bacterial functions were similar between crab intestine and sediment, no significant correlation in bacterial functions was observed between crab intestine and sediment. The findings of the present study would contribute to understanding the relationship between intestinal microbiota of wild aquatic animal and habitat microbes, and providing new insights into the intestinal microbiota of wild aquatic animals.

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Section: Introductionmentioning

confidence: 70%

Profiling intestinal microbiota of Metaplax longipes and Helice japonica and their co-occurrence relationships with habitat microbes

Fan

et al. 2021

Sci Rep

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“…It is a bottom dwelling marine deposit feeder that uses its tentacled mouth to consume the topmost sediment layer [4,5]. The sediment contains plant and animal debris, protozoa, diatoms and a diverse selection of bacteria [6][7][8][9][10]. The sediment also hosts the bacteria V. splendidus [10,11] which has been associated with seasonal epidemics of high mortality among the cultured sea cucumbers [12,13].…”

Section: Introductionmentioning

confidence: 99%

“…The sediment contains plant and animal debris, protozoa, diatoms and a diverse selection of bacteria [6][7][8][9][10]. The sediment also hosts the bacteria V. splendidus [10,11] which has been associated with seasonal epidemics of high mortality among the cultured sea cucumbers [12,13]. On the other hand, V. splendidus can also coexist in the gut of healthy sea cucumbers [14,15].…”

Section: Introductionmentioning

confidence: 99%

Infective prey leads to a partial role reversal in a predator-prey interaction

Kaitala

Koivu-Jolma

Laakso

2021

Preprint

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An infective prey has the potential to infect, kill and consume its predator. Such a prey-predator relationship fundamentally differs from the classical Lotka-Volterra predator-prey premise because the prey can directly profit from the predator as a growth resource. Here we present a population dynamics model of partial role reversal in the predator-prey interaction. We parametrize the model to represent the predator-prey interaction of sea cucumber Apostichopus japonicus and bacterium Vibrio splendidus . We observe that two major factors stabilize the predator-prey interaction. First, the partial role reversal in the predator-prey community stabilizes the predator-prey interaction. Second, if the predator is a generalist and follows the type I functional response in attacking the prey, the predator-prey interaction is stable. We also analysed the conditions for species extinction. The extinction of the prey, V. splendidus , may occur when its growth rate is low, or in the absence of infectivity. The extinction of the predator, A. japonicus , may follow if either the infectivity of the prey is high or a moderately infective prey is abundant. We conclude that partial role reversal is an underestimated subject in predator-prey studies.

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“…The sea cucumber (Apostichopus japonicus) is a bottom dwelling marine deposit feeder that uses its tentacled mouth to consume the topmost sediment layer [4,5]. The sediment contains plant and animal debris, protozoa, diatoms and a diverse selection of bacteria [6][7][8][9][10]. Because the bacteria are abundant and have higher nutritional value than the surrounding sediment, they are considered a direct food source for detrivorous holothurians [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Bottom sediments are also inhabited by the opportunistic, potentially infective bacterium Vibrio splendidus [10,20]. V. splendidus is an efficient decomposer, which allows it to thrive in many environments [21,22].…”

Section: Introductionmentioning

confidence: 99%

Infective prey leads to a partial role reversal in a predator-prey interaction

2021

View full text Add to dashboard Cite

An infective prey has the potential to infect, kill and consume its predator. Such a prey-predator relationship fundamentally differs from the predator-prey interaction because the prey can directly profit from the predator as a growth resource. Here we present a population dynamics model of partial role reversal in the predator-prey interaction of two species, the bottom dwelling marine deposit feeder sea cucumber Apostichopus japonicus and an important food source for the sea cucumber but potentially infective bacterium Vibrio splendidus. We analyse the effects of different parameters, e.g. infectivity and grazing rate, on the population sizes. We show that relative population sizes of the sea cucumber and V. Splendidus may switch with increasing infectivity. We also show that in the partial role reversal interaction the infective prey may benefit from the presence of the predator such that the population size may exceed the value of the carrying capacity of the prey in the absence of the predator. We also analysed the conditions for species extinction. The extinction of the prey, V. splendidus, may occur when its growth rate is low, or in the absence of infectivity. The extinction of the predator, A. japonicus, may follow if either the infectivity of the prey is high or a moderately infective prey is abundant. We conclude that partial role reversal is an undervalued subject in predator-prey studies.

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Microbial communities in sea cucumber (Apostichopus japonicus) culture pond and the effects of environmental factors

Cited by 21 publications

References 40 publications

Profiling intestinal microbiota of Metaplax longipes and Helice japonica and their co-occurrence relationships with habitat microbes

Profiling intestinal microbiota of Metaplax longipes and Helice japonica and their co-occurrence relationships with habitat microbes

Infective prey leads to a partial role reversal in a predator-prey interaction

Infective prey leads to a partial role reversal in a predator-prey interaction

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