Back from the Deep: Scientists Use “Resurrection Ecology” of 600-Year-Old Water Fleas to Better Understand How Organisms Adapt to Lake Pollution

2020 ◽  
Vol 37 (5) ◽  
pp. 1546-1546
Author(s):  
Joseph Caspermeyer
Keyword(s):  
Resurrection Ecology

scholarly journals Resurrection Ecology

2002 ◽  
Vol 20 (4) ◽  
pp. 237-237
Author(s):  
D. Egan
Keyword(s):  
Resurrection Ecology

scholarly journals Resurrected ‘ancient’ Daphnia genotypes show reduced thermal stress tolerance compared to modern descendants

2018 ◽  
Vol 5 (3) ◽  
pp. 172193 ◽  
Author(s):  
Aime'e M. Yousey ◽  
Priyanka Roy Chowdhury ◽  
Nicole Biddinger ◽  
Jennifer H. Shaw ◽  
Punidan D. Jeyasingh ◽  
...  
Keyword(s):  
Thermal Tolerance ◽  
Heat Exposure ◽  
Natural Populations ◽  
Interactive Effects ◽  
Hsp70 Expression ◽  
Strongly Correlated ◽  
Resurrection Ecology ◽  
Temperature Regimes ◽  
Time Periods ◽  
Anthropogenic Alterations

Understanding how populations adapt to rising temperatures has been a challenge in ecology. Research often evaluates multiple populations to test whether local adaptation to temperature regimes is occurring. Space-for-time substitutions are common, as temporal constraints limit our ability to observe evolutionary responses. We employed a resurrection ecology approach to understand how thermal tolerance has changed in a Daphnia pulicaria population over time. Temperatures experienced by the oldest genotypes were considerably lower than the youngest. We hypothesized clones were adapted to the thermal regimes of their respective time periods. We performed two thermal shock experiments that varied in length of heat exposure. Overall trends revealed that younger genotypes exhibited higher thermal tolerance than older genotypes; heat shock protein (hsp70) expression increased with temperature and varied among genotypes, but not across time periods. Our results indicate temperature may have been a selective factor on this population, although the observed responses may be a function of multifarious selection. Prior work found striking changes in population genetic structure, and in other traits that were strongly correlated with anthropogenic changes. Resurrection ecology approaches should help our understanding of interactive effects of anthropogenic alterations to temperature and other stressors on the evolutionary fate of natural populations.

Crustacean Reproductive Records

2020 ◽  
pp. 526-554
Author(s):  
Günter Vogt ◽  
Rickey D. Cothran ◽  
Mika M. J. Tan ◽  
Martin Thiel
Keyword(s):  
Case Studies ◽  
Management Strategies ◽  
Reproductive Traits ◽  
Mate Guarding ◽  
Sperm Length ◽  
Larval Duration ◽  
Brood Care ◽  
Male And Female ◽  
Resurrection Ecology ◽  
Penis Length

Crustacean reproductive traits are highly diverse, and this chapter illustrates some of the most extreme cases, placing them in the context of the more typical crustaceans. It highlights, for example, the male and female records of size and age, the “hottest” and “coolest” reproducers, the longest penises, the largest sperm and eggs, the smallest and largest brood sizes, the longest mate guarding, the most massive sexually selected weapons, the flashiest courtship, the most fathers per brood, the longest incubation of broods, the smallest and largest larvae, the longest larval duration, the longest dormancy of eggs, and the oldest fossil evidence of penis, sperm, brood care, and larvae. Using these illustrious case studies, this chapter briefly examines the adaptive advantages of these extremes and discusses why few species have evolved unusual reproductive traits. Crustaceans indeed appear to hold animal records with respect to relative penis length, aflagellate sperm length, dormant egg viability and fossil ages of penis, giant sperm, and brood care. These captivating examples may be of applied importance in terms of restoring human-altered ecosystems (resurrection ecology using egg banks) and in management strategies of important fisheries.

scholarly journals Rotifers in Lake Orta: a potential ecological and evolutionary model system

2016 ◽  
Vol 75 (s2) ◽  
Author(s):  
Stefan Sommer ◽  
Sarma Nandini ◽  
S.S.S. Sarma ◽  
Arpat Ozgul ◽  
Diego Fontaneto
Keyword(s):  
Copper Concentration ◽  
Current Knowledge ◽  
Evolutionary Model ◽  
Recovery Phase ◽  
Resting Stages ◽  
Resurrection Ecology ◽  
History Of ◽  
Chronic Pollution ◽  
Living Organisms ◽  
Potential Use

<p>Lake Orta experienced for a few decades a unique history of chronic pollution, with extreme changes in pH and copper concentration. Currently, the lake has recovered to its almost pristine oligotrophic conditions, but its sediments still preserve the record of all the changes that happened since the establishment of the first polluting factories in the 1920s, through to the liming activities in 1989-1990, and to the recovery phase that is still going on. Here we review the current knowledge for Lake Orta regarding rotifers, a diverse component of the zooplankton of the lake, through studies on living organisms and on their resting stages accumulated in the sediments. We also report a brief review of what is known in general on the effects of changes in pH and copper concentration on rotifers at the population, species and community level, providing expectations for such effects on the rotifers of Lake Orta. Then, we conclude our review with a perspective on the potential use of rotifers hatched from the resting stages in the sediment of Lake Orta with the description of experiments that can be performed in the future in the framework of resurrection ecology, in order to understand the mechanisms of past and future changes in the environment.</p>

scholarly journals Resurrection ecology inArtemia

2017 ◽  
Vol 11 (1) ◽  
pp. 76-87 ◽  
Author(s):  
Thomas Lenormand ◽  
Odrade Nougué ◽  
Roula Jabbour-Zahab ◽  
Fabien Arnaud ◽  
Laurent Dezileau ◽  
...  
Keyword(s):  
Resurrection Ecology

scholarly journals Evolutionary change in metabolic rate of Daphnia pulicaria in response to the invasive predator Bythotrephes longimanus

2021 ◽  
Author(s):  
varsha rani ◽  
Matthew Walsh ◽  
Tim Burton ◽  
Sigurd Einum
Keyword(s):  
Metabolic Rate ◽  
Opposite Direction ◽  
Prey Species ◽  
Evolutionary Change ◽  
Bythotrephes Longimanus ◽  
Habitat Shift ◽  
Daphnia Pulicaria ◽  
Lake Mendota ◽  
Resurrection Ecology ◽  
Invasive Predator

Metabolic rate is a trait that can be hypothesized to evolve in response to a change in predation. In the current study, we address this question by utilising an invasive event by the predatory zooplankton Bythotrephes longimanus in Lake Mendota, Wisconsin, US. This invasion dramatically impacted the prey Daphnia pulicaria, causing a ~60% decline in their biomass. Using a resurrection ecology approach, we compared the metabolic rate of D. pulicaria clones originating from prior to the Bythotrephes invasion with that of clones having evolved in the presence of Bythotrephes. We observed a 7.4% reduction in metabolic rate among post-invasive clones compared to pre-invasive clones. This change is in the opposite direction to what might be expected to evolve in response to increased predation. The evolution of a lower metabolic rate may instead be due to a habitat shift in the prey species into deeper and less productive waters and associated changes in the optimal metabolic rate.

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