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Resurrection ecology

April 18, 2024

"Resurrection ecology" is an evolutionary biology technique whereby researchers hatch dormant eggs from lake sediments to study animals as they existed decades ago. It is a new approach that might allow scientists to observe evolution as it occurred, by comparing the animal forms hatched from older eggs with their extant descendants.[1] This technique is particularly important because the live organisms hatched from egg banks can be used to learn about the evolution of behavioural, plastic or competitive traits that are not apparent from more traditional paleontological methods.[2]

One such researcher in the field is W. Charles Kerfoot of Michigan Technological University whose results were published in the journal Limnology and Oceanography. He reported on success in a search for "resting eggs" of zooplankton that are dormant in Portage Lake on Michigan's Upper Peninsula. The lake has undergone a considerable amount of change over the last 100 years including flooding by copper mine debris, dredging, and eutrophication.[2] Others have used this technique to explore the evolutionary effects of eutrophication,[3] predation,[4][5] and metal contamination.[2] Resurrection ecology provided the best empirical example of the "Red Queen Hypothesis" in nature.[4] Any organism that produces a resting stage can be used for resurrection ecology. However, the most frequently used organism is the water flea, Daphnia. This genus has well-established protocols for lab experimentation and usually asexually reproduces allowing for experiments on many individuals with the same genotype.

Although the more esoteric demonstration of natural selection is alone a valuable aspect of the study described, there is a clear ecological implication in the discovery that very old zooplankton eggs have survived in the lake: the potential still exists, if and when this environment is restored to something of a more pristine nature, for at least some of the original (pre-disturbance) inhabitants to re-establish populations once presumed lost. The genes valuable to survival of those species in a restored environment are still "readily" available and may be quickly assimilated by the modern populations, perhaps requiring no more than a fortuitous disturbance of the bottom.

See also edit

References edit

  1. ^ Hairston, Nelson G. (July 1996). "Zooplankton egg banks as biotic reservoirs in changing environments". Limnology and Oceanography. 41 (5): 1087–1092. Bibcode:1996LimOc..41.1087H. doi:10.4319/lo.1996.41.5.1087. ISSN 0024-3590.
  2. ^ a b c Kerfoot, W. Charles; Robbins, John A.; Weider, Lawrence J. (July 1999). "A new approach to historical reconstruction: Combining descriptive and experimental paleolimnology". Limnology and Oceanography. 44 (5): 1232–1247. Bibcode:1999LimOc..44.1232K. doi:10.4319/lo.1999.44.5.1232. ISSN 0024-3590. S2CID 11436470.
  3. ^ Hairston, N. G.; Holtmeier, C. L.; Lampert, W.; Weider, L. J.; Post, D. M.; Fischer, J. M.; Cáceres, C. E.; Fox, J. A.; Gaedke, U. (2001). "Natural Selection for Grazer Resistance to Toxic Cyanobacteria: Evolution of Phenotypic Plasticity?". Evolution. 55 (11): 2203–2214. doi:10.1111/j.0014-3820.2001.tb00736.x. ISSN 0014-3820. PMID 11794781. S2CID 10130103.
  4. ^ a b Kerfoot, W. Charles; Weider, Lawrence J. (2004). "Experimental paleoecology (resurrection ecology): Chasing Van Valen's Red Queen hypothesis". Limnology and Oceanography. 49 (4part2): 1300–1316. Bibcode:2004LimOc..49.1300K. doi:10.4319/lo.2004.49.4_part_2.1300. ISSN 0024-3590.
  5. ^ Cousyn, C.; De Meester, L.; Colbourne, J. K.; Brendonck, L.; Verschuren, D.; Volckaert, F. (2001). "Rapid, local adaptation of zooplankton behavior to changes in predation pressure in the absence of neutral genetic changes". Proceedings of the National Academy of Sciences. 98 (11): 6256–6260. Bibcode:2001PNAS...98.6256C. doi:10.1073/pnas.111606798. ISSN 0027-8424. PMC 33455. PMID 11353872.

External links edit

  • ABC News article about Resurrection Ecology

April 18, 2024
resurrection, ecology, evolutionary, biology, technique, whereby, researchers, hatch, dormant, eggs, from, lake, sediments, study, animals, they, existed, decades, approach, that, might, allow, scientists, observe, evolution, occurred, comparing, animal, forms. Resurrection ecology is an evolutionary biology technique whereby researchers hatch dormant eggs from lake sediments to study animals as they existed decades ago It is a new approach that might allow scientists to observe evolution as it occurred by comparing the animal forms hatched from older eggs with their extant descendants 1 This technique is particularly important because the live organisms hatched from egg banks can be used to learn about the evolution of behavioural plastic or competitive traits that are not apparent from more traditional paleontological methods 2 One such researcher in the field is W Charles Kerfoot of Michigan Technological University whose results were published in the journal Limnology and Oceanography He reported on success in a search for resting eggs of zooplankton that are dormant in Portage Lake on Michigan s Upper Peninsula The lake has undergone a considerable amount of change over the last 100 years including flooding by copper mine debris dredging and eutrophication 2 Others have used this technique to explore the evolutionary effects of eutrophication 3 predation 4 5 and metal contamination 2 Resurrection ecology provided the best empirical example of the Red Queen Hypothesis in nature 4 Any organism that produces a resting stage can be used for resurrection ecology However the most frequently used organism is the water flea Daphnia This genus has well established protocols for lab experimentation and usually asexually reproduces allowing for experiments on many individuals with the same genotype Although the more esoteric demonstration of natural selection is alone a valuable aspect of the study described there is a clear ecological implication in the discovery that very old zooplankton eggs have survived in the lake the potential still exists if and when this environment is restored to something of a more pristine nature for at least some of the original pre disturbance inhabitants to re establish populations once presumed lost The genes valuable to survival of those species in a restored environment are still readily available and may be quickly assimilated by the modern populations perhaps requiring no more than a fortuitous disturbance of the bottom See also editLimnology PaleoecologyReferences edit Hairston Nelson G July 1996 Zooplankton egg banks as biotic reservoirs in changing environments Limnology and Oceanography 41 5 1087 1092 Bibcode 1996LimOc 41 1087H doi 10 4319 lo 1996 41 5 1087 ISSN 0024 3590 a b c Kerfoot W Charles Robbins John A Weider Lawrence J July 1999 A new approach to historical reconstruction Combining descriptive and experimental paleolimnology Limnology and Oceanography 44 5 1232 1247 Bibcode 1999LimOc 44 1232K doi 10 4319 lo 1999 44 5 1232 ISSN 0024 3590 S2CID 11436470 Hairston N G Holtmeier C L Lampert W Weider L J Post D M Fischer J M Caceres C E Fox J A Gaedke U 2001 Natural Selection for Grazer Resistance to Toxic Cyanobacteria Evolution of Phenotypic Plasticity Evolution 55 11 2203 2214 doi 10 1111 j 0014 3820 2001 tb00736 x ISSN 0014 3820 PMID 11794781 S2CID 10130103 a b Kerfoot W Charles Weider Lawrence J 2004 Experimental paleoecology resurrection ecology Chasing Van Valen s Red Queen hypothesis Limnology and Oceanography 49 4part2 1300 1316 Bibcode 2004LimOc 49 1300K doi 10 4319 lo 2004 49 4 part 2 1300 ISSN 0024 3590 Cousyn C De Meester L Colbourne J K Brendonck L Verschuren D Volckaert F 2001 Rapid local adaptation of zooplankton behavior to changes in predation pressure in the absence of neutral genetic changes Proceedings of the National Academy of Sciences 98 11 6256 6260 Bibcode 2001PNAS 98 6256C doi 10 1073 pnas 111606798 ISSN 0027 8424 PMC 33455 PMID 11353872 External links editABC News article about Resurrection Ecology Retrieved from https en wikipedia org w index php title Resurrection ecology amp oldid 1090641697, wikipedia, wiki, book, books, library,

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