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1
Cryptic Species - Animals that look alike but aren
Cryptic Species - Animals that look alike but aren't.
::2014/02/28::
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2
Paramecium Aurelia. Polarized light, phase contrast, darkfeild combination. 625x
Paramecium Aurelia. Polarized light, phase contrast, darkfeild combination. 625x
::2012/09/28::
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3
A stylopized Pachycondyla active just before emergence of male Myrmecolax incautus
A stylopized Pachycondyla active just before emergence of male Myrmecolax incautus
::2011/11/14::
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4
Pseudoblepharisma (Pseudoblepharisma crassum ?)
Pseudoblepharisma (Pseudoblepharisma crassum ?)
::2013/05/22::
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Captain
Captain's Log - Episode 10 HD: Starships Cryptic Doesn't Want You to See
::2012/08/26::
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White tailed Bumble Bee Bombus lucorum sensu lato grooming
White tailed Bumble Bee Bombus lucorum sensu lato grooming
::2014/03/21::
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7
Management of cryptic and endangered Sumatran tigers on a network
Management of cryptic and endangered Sumatran tigers on a network
::2010/06/10::
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8
Wildlife Thailand Leopard cryptic glimpses Kaeng Krachan
Wildlife Thailand Leopard cryptic glimpses Kaeng Krachan
::2012/01/06::
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9
Catacomb - Wipe Your Species
Catacomb - Wipe Your Species
::2010/04/13::
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10
Kaeng Krachan Forest Complex
Kaeng Krachan Forest Complex
::2013/10/02::
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11
Mountain Lion Training and Treadmills
Mountain Lion Training and Treadmills
::2014/10/05::
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12
Reef Fish Habitats
Reef Fish Habitats
::2014/02/25::
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13
Tao Te Ching - Relaxation / Inspiration
Tao Te Ching - Relaxation / Inspiration
::2011/06/20::
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14
Star Trek: Pakleds
Star Trek: Pakleds
::2008/04/09::
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15
'The Florist'
::2010/04/12::
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16
Anatomy of a Puma Pounce
Anatomy of a Puma Pounce
::2014/10/05::
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17
Over 400 species of birds in Kaeng Krachan National Park
Over 400 species of birds in Kaeng Krachan National Park
::2013/10/01::
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18
Rocket frog (Colostethus flotator)
Rocket frog (Colostethus flotator)
::2010/03/21::
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19
managing invasive species on a small network (demo)
managing invasive species on a small network (demo)
::2009/11/19::
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20
Why The Mad Man Cries - Roger De Souza Eremita (draft version)
Why The Mad Man Cries - Roger De Souza Eremita (draft version)
::2014/05/22::
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21
Butterflies and the Bees
Butterflies and the Bees
::2012/03/26::
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Star Trek Online| Romulan Race| #16 "Smash And Grab" Part 1
Star Trek Online| Romulan Race| #16 "Smash And Grab" Part 1
::2014/05/14::
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Management of a hypothetical invasive weed on a network
Management of a hypothetical invasive weed on a network
::2010/06/10::
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Catacomb - Time Will Crawl (feat. mechanic)
Catacomb - Time Will Crawl (feat. mechanic)
::2010/04/13::
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25
Odious Mortem - Vile Progeny
Odious Mortem - Vile Progeny
::2008/08/30::
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26
Gulf Flounder caught at Fort DeSoto Park
Gulf Flounder caught at Fort DeSoto Park
::2008/03/16::
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27
Wildlife Thailand -  Yellow-throated marten (Martes flavigula)
Wildlife Thailand - Yellow-throated marten (Martes flavigula)
::2013/05/13::
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28
E-Klipse - Ars Poetica
E-Klipse - Ars Poetica
::2010/11/04::
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29
Jungle cock & hen Crossing Road  Kanha Park Video by Shirishkumar Patil
Jungle cock & hen Crossing Road Kanha Park Video by Shirishkumar Patil
::2009/06/01::
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30
STAR TREK ONLINE HD "Sphere of Influence" Legacy Of Romulus (2013) 1080p
STAR TREK ONLINE HD "Sphere of Influence" Legacy Of Romulus (2013) 1080p
::2013/11/02::
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31
Avoiding Predators: How to Avoid Being Eaten
Avoiding Predators: How to Avoid Being Eaten
::2012/06/05::
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32
Burmese striped squirrel
Burmese striped squirrel
::2012/03/28::
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33
Electro Sun and Brain Damage - Hypnotic voices
Electro Sun and Brain Damage - Hypnotic voices
::2012/03/27::
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34
Biology 1B - Lecture 36: Island Biogeography
Biology 1B - Lecture 36: Island Biogeography
::2011/04/18::
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35
Discovery of the Kaeng Krachan National Park
Discovery of the Kaeng Krachan National Park
::2013/09/30::
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36
Despise You Full Set
Despise You Full Set
::2013/09/09::
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37
Live Free Or Die - DCP Feat. NKP (Produced by Dansonn + Kiddot) "Melancholia"
Live Free Or Die - DCP Feat. NKP (Produced by Dansonn + Kiddot) "Melancholia"
::2012/01/16::
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38
BYU Life Sciences College Seminar - Dr. Barry Sinervo - 11/11/2010
BYU Life Sciences College Seminar - Dr. Barry Sinervo - 11/11/2010
::2012/06/27::
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39
Amazing Tree Kaeng Krachan National Park
Amazing Tree Kaeng Krachan National Park
::2013/10/13::
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40
Competition and Mimicry Grade 9
Competition and Mimicry Grade 9
::2011/10/19::
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41
Kaeng Krachan Reservoir, Rope Bridge, Visitor Center
Kaeng Krachan Reservoir, Rope Bridge, Visitor Center
::2013/10/23::
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From Wikipedia, the free encyclopedia
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This article is about groups of species that appear very similar. For the principles of hiding, a means of Camouflage, see Crypsis.
"Cryptic species" redirects here, not to be confused with Cryptid, a supposed or imagined creature whose existence is not scientifically recognised.

In scientific classification, a cryptic species complex is a group of organisms that are typically very closely related yet their precise classification and relationships cannot be easily determined. Usually, when a cryptic species complex has been discovered, the individual species within the complex are separated by analysing data from multiple sources, such as by comparing polytene chromosomes, DNA sequence analyses, bioacoustics and thorough life history studies. The members of a cryptic species might or might not constitute a superspecies; in other words, they might appear very similar but not be very closely related.

The component species of a cryptic species complex may be parapatric, are frequently sympatric, and are sometimes allopatric. Cryptic species complexes are not the same as populations undergoing speciation: they typically represent a situation where speciation has already broken the gene flow between populations, but where evolution has not progressed to a point where easily recognizable adaptations have taken place.

Cryptic species may be somewhat more distantly related and simply represent lineages that have been so successful as to require little evolutionary change, possibly coupled with parallel evolution. A famous example are the Eurasian Treecreeper and Short-toed Treecreeper. These birds were perhaps the first cryptic species to be recognized as such (by Christian Ludwig Brehm in 1820). Other ornithologists refused to accept that more than one species was involved until Brehm presented his bioacoustic studies, which left no room for doubt. The European Treecreeper has since been found to be a very close relative of the Himalayan Hodgson's Treecreeper, while the Short-toed Treecreeper is probably the sister species of the North American Brown Creeper. Cryptic species are also common in certain families of insects such as Chironomidae.[1][2]

Consequences for biological studies[edit]

It has been suggested that cryptic species complexes are very common in the marine environment.[3] Although this suggestion came before the detailed analysis of many systems using DNA sequence data, it has been proven correct.[4] The increased use of DNA sequence in the investigation of organismal diversity (also called Phylogeography and DNA barcoding) has led to the discovery of a great many cryptic species complexes in all habitats. In the marine bryozoan Celleporella hyalina,[5] detailed morphological analyses and mating compatibility tests between the isolates identified by DNA sequence analysis were used to confirm that these groups consisted of more than 10 ecologically distinct species that had been diverging for many million years.

Evidence from the identification of cryptic species has led some[who?] to conclude that current estimates of global species richness are too low. For example, mitochondrial DNA research published in January 2008 suggests that there are at least 11 genetically distinct populations of giraffes.[6][7] Similar methods also found that the Amazonian frog Eleutherodactylus ockendeni is actually at least 3 different species that diverged over 5 million years ago.[8]

See also[edit]

References[edit]

  1. ^ Int Panis L, Kiknadze I, Bervoets L, Aimanova A (1994). "Karyological identification of some species of the genus Chironomus Meigen, 1803 from Belgium". Bull. Annls Soc. R. Belge Ent. 130: 135–142. 
  2. ^ Кикнадзе ИИ, Михайлова П, Истомина АГ, Голыгина ВВ, Инт Панис Л, Крастанов Б (2006). "Хромосомный полиморфизм и дивергенция популяций у Chironomus nuditarsis Keyl (Diptera, Chironomidae)". Tsitologia 48: 595–609. 
  3. ^ Knowlton, N (1993). "Sibling Species in the Sea". Annual Review of Ecology and Systematics 24 (1): 189–216. doi:10.1146/annurev.es.24.110193.001201. ISSN 0066-4162. 
  4. ^ Knowlton, N (February 2000). "Molecular genetic analyses of species boundaries in the sea". Hydrobiologia 420 (1): 73–90. doi:10.1023/A:1003933603879. ISSN 0018-8158. 
  5. ^ Gómez, Africa; Peter J Wright; David H Lunt; Juan M Cancino; Gary R Carvalho; Roger N Hughes (2007-01-22). "Mating trials validate the use of DNA barcoding to reveal cryptic speciation of a marine bryozoan taxon". Proceedings. Biological Sciences / the Royal Society 274 (1607): 199–207. doi:10.1098/rspb.2006.3718. ISSN 0962-8452. PMC 1685843. PMID 17035167. 
  6. ^ "Giraffes And Frogs Provide More Evidence Of New Species Hidden In Plain Sight". Science Daily. January 2008. 
  7. ^ Brown, David; Rick Brenneman, Klaus-Peter Koepfli, John Pollinger, Borja Mila, Nicholas Georgiadis, Edward Louis, Gregory Grether, David Jacobs, Robert Wayne (2007). "Extensive population genetic structure in the giraffe". BMC Biology 5: 57. doi:10.1186/1741-7007-5-57. ISSN 1741-7007. PMC 2254591. PMID 18154651. 
  8. ^ Elmer, Kathryn; Jose Davila; Stephen Lougheed (2007). "Cryptic diversity and deep divergence in an upper Amazonian leaflitter frog, Eleutherodactylus ockendeni". BMC Evolutionary Biology 7: 247. doi:10.1186/1471-2148-7-247. ISSN 1471-2148. PMC 2254618. PMID 18154647. 

External links[edit]

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