Climate change jeopardizes the persistence of freshwater zooplankton by reducing both habitat suitability and demographic resilience

Pinceel, Tom; Buschke, Falko T.; Weckx, Margo; Brendonck, Luc; Vanschoenwinkel, Bram

doi:10.1186/s12898-018-0158-z

Cited by 31 publications

(35 citation statements)

References 41 publications

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“…Once habitat quality improves, resting eggs hatch and zooplankton develop in the water column. However, the viability of resting eggs and hatchlings might decrease as resting eggs age and are exposed to extreme conditions, reducing their contribution to the recovery of open water populations (Garcia‐Roger, Carmona, & Serra, ; Pinceel, Buschke, Weckx, Brendonck, & Vanschoenwinkel, ; Rogalski & Van Donk, ).…”

Section: Introductionmentioning

confidence: 99%

Recovery from drought: Viability and hatching patterns of hydrated and desiccated zooplankton resting eggs

Vargas

Santangelo

Bozelli

2019

Internat Rev Hydrobiol

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Many zooplankton organisms produce resting eggs before harsh environmental conditions. After aquatic systems are recovered, animals hatch from resting eggs and help re-establish active communities. However, although the ability of resting eggs to survive desiccation is largely known, it is unclear to what extent the duration of desiccation affects the viability and hatching patterns of resting eggs. In this study, we assessed the viability of resting egg banks in naturally wet and dry sediments through ex-situ hatching experiments. In addition, we simulated dry out episodes of different durations (2 and 8 months) in wet sediments originating from temporary systems. We observed hatchlings of rotifers, cladocerans, copepods, ostracods, and anostracans in wet and dry sediments. Drying the sediments for different durations did not change the species richness and composition of hatchlings, possibly because temporary systems select for species and genotypes that are more prone to producing resting eggs, which survive desiccation. However, some species were stimulated to hatch after desiccation, suggesting that desiccation might help break the dormancy of resting eggs from temporary systems. Desiccation intervals up to 8 months likely do not affect the viability of resting eggs from temporary systems. Since many lakes are about to experience unpredictable droughts owing to human activities and ongoing global changes, the ability of resting eggs to tolerate desiccation will play a key role in zooplankton community recovery. K E Y W O R D S diapause, dormancy, drought, resilience, zooplankton 1 | INTRODUCTION Climate combined with river and lake features usually determine the probability of droughts in aquatic systems. Droughts are commonly observed in arid and semi-arid regions and in areas with strong seasonality in precipitation. Overall, shallow lakes and ponds and small aquatic systems, such as rock pools, are more prone to drought episodes. Moreover, the damming and regulation of rivers, water diverted from rivers and lakes, and ongoing changes in precipitation and temperature patterns may also reduce water availability, SUPPORTING INFORMATION Additional supporting information may be found online in the Supporting Information section at the end of the article. How to cite this article: Vargas AL, Santangelo JM, Bozelli RL. Recovery from drought: Viability and hatching patterns of hydrated and desiccated zooplankton resting eggs. Internat Rev Hydrobiol. 2019;104:26-33.

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Section: Introductionmentioning

confidence: 99%

Recovery from drought: Viability and hatching patterns of hydrated and desiccated zooplankton resting eggs

Vargas

Santangelo

Bozelli

2019

Internat Rev Hydrobiol

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“…In fact, the drought‐resistant, diapausing eggs of these shrimps will hatch only in favourable conditions, and since the eggs do not all hatch simultaneously, they constitute a cyst bank composed of eggs from different generations and genotypes over time (Brendonck, ; Brendonck & De Mesteer, ). Although the ecological factors triggering hatching are still poorly understood, egg banks hold a biodiversity that could enable environmental variations to be overcome, even if the present climate change poses new challenges to the resilience of this adopted strategy (Brendonck & De Mesteer, ; Pinceel, Buschke, Weckx, Brendonck, & Vanschoenwinkel, ).…”

Section: Introductionmentioning

confidence: 99%

Draft genomes and genomic divergence of two Lepidurus tadpole shrimp species (Crustacea, Branchiopoda, Notostraca)

Savojardo

Luchetti

Martelli

et al. 2018

Molecular Ecology Resources

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Crustaceans of the order Notostraca (Branchiopoda) are distributed worldwide and are known for the remarkable morphological stasis between their extant and Permian fossil species. Moreover, these crustaceans show relevant ecological traits and a wide range of reproductive strategies. However, genomic studies on notostracans are fairly limited. Here, we present the genome sequences of two notostracan taxa, Lepidurus arcticus and Lepidurus apus lubbocki. Taking advantage of the small genome sizes (~0.11 pg) of these taxa, genomes were sequenced for one individual per species with one run on the Illumina HiSeq X platform. We finally assembled 73.2 Mbp (L. arcticus) and 90.3 Mbp (L. apus lubbocki) long genomes. Assemblies cover up to 84% of the estimated genome size, with a gene completeness >97% for both genomes. In total, 13%-16% of the assembled genomes consist of repeats, and based on read mapping, L. apus lubbocki shows a significantly lower transposable element content than L. arcticus. The analysis of 2,376 orthologous genes indicates an~7% divergence between the two Lepidurus taxa, with a nucleotide substitution rate significantly lower than that of Daphnia taxa. K a /K s analysis suggests purifying selection in both branchiopod lineages, raising the question of whether the low substitution rate of Lepidurus is correlated with morphological conservation or is linked to specific biological traits. Our analysis demonstrates that, in these organisms, it is possible to obtain high-quality draft genomes from single individuals with a relatively low sequencing effort. This result makes Lepidurus and Notostraca interesting models for genomic studies at taxonomic, ecological and evolutionary levels.

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“…Generally, temperature is an essential determinant in species' distribution [2,[10][11][12][13][44][45][46][47]. Difference in the critical thermal minimum and maximum appears to be the basis for niche separation between D. dubium and D. excisum [25].…”

Section: Temperature Niches and Species Distributionmentioning

confidence: 99%

“…Temperature affects most key life history traits and has long been recognized as the most fundamental dimension of niche space, which determines species geographical distribution [8,9]. Change in temperature will signi cantly affect species adaptation and spatial distribution [10][11][12]. In tropics, species experience a rather stable thermal condition, and consequently, they are predicted to have narrower temperature niches than their counterparts from higher latitudes and become more sensitive to temperature variation [10,13].…”

Section: Introductionmentioning

confidence: 99%

Temperature niche difference and interspecific competition determine the parapatric distribution of two congeneric species in Diaphanosoma

Liu¹,

Pan²,

Lin³

et al. 2020

Preprint

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Background Diaphanosoma excisum and D. dubium are parapatrically distributed in tropical and subtropical waters, and rarely coexist at local communities in the transition between tropics and subtropics. According to Janzen’s hypothesis and the modern coexistence theory, the specific thermal adaptation and strong interspecific competition between the two congeneric species are assumed to result in their range limits. To explore the mechanisms underlying such parapatric distribution, we modeled their current geographic distribution, and compared temperature niche difference and fitness inequality in interspecific competition with their representative clones.Results The species distribution modeling showed that the two Diaphanosoma species had significantly divergent climate niches. Their life history parameters in monocultures also demonstrated as stable temperature niche difference, while D. excisum had higher fitness than D. dubium in dimension of food niche. The competition experiments revealed a strong exploitative competition between the two species, and D. excisum was the superior competitor, and excluded D. dubium in all the competition experiments within overlapping temperature niche regardless of food conditions.Conclusions Our results suggest that stable temperature niche difference overcoming interspecific competition for food plays a critical role in shaping Diaphanosoma species range.

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Climate change jeopardizes the persistence of freshwater zooplankton by reducing both habitat suitability and demographic resilience

Cited by 31 publications

References 41 publications

Recovery from drought: Viability and hatching patterns of hydrated and desiccated zooplankton resting eggs

Recovery from drought: Viability and hatching patterns of hydrated and desiccated zooplankton resting eggs

Draft genomes and genomic divergence of two Lepidurus tadpole shrimp species (Crustacea, Branchiopoda, Notostraca)

Temperature niche difference and interspecific competition determine the parapatric distribution of two congeneric species in Diaphanosoma

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