Carcinización

Tendencia a la carcinización de los crustáceos

Indíce

Evolución convergente

Carcinización

Ejemplos

Referencias

Evolución convergente

Especies sin un ancestro común desarrollan características similares.

Debido a

Presiones ambientales

Provoca

Estructuras análogas

Estructuras análogas

Misma función, origen distinto!

Nota Estructuras homólogas - Mismo orígen - Función distinta

Carcinización

Clasificación

cangrejos falsos(Anomura)

cangrejos verdaderos(braquiuros)

Clasificación

cangrejos falsos(Anomura)

cangrejos verdaderos(braquiuros)

Ejemplos

Author's Name

Ejemplos

Cangrejos de Porcelana (Petrolisthes violaceus)

Cangrejo cocotero con un coco

Cangrejo Real (Lithodes maja)

Cangrejo Cocotero (Birgus latro)

• Seis patas para caminar
• Largas antenas
• La evidencia genética sugiere que en realidad son un linaje altamente especializado de langostas achaparradas

• Pertenece a la rama Anomura
• Su pariente más cercano es el cangrejo ermitaño

• Abren cocos con sus pinzas
• Pertenece también a la rama de los anomura
• Grandes dimensiones

Cangrejo ermitaño (Paguroidea) pariente vivo más cercano al cangrejo real

Langosta rechoncha (Allogalathea elegans)

¿Es sebastián un cangrejo?

¿Es sebastián un cangrejo?

Sebastian

Referencias

Evolución convergente y Estructuras análogas

Carcinización

Bedoya, S. (2017). Paisajes convergentes : una mirada a paisajes rurales de la región caribe colombiana a la luz de la teoría de la evolución convergente. Recuperado de: http://hdl.handle.net/20.500.11912/4962. Cerca, J. (2023). Understanding natural selection and similarity: convergent, parallel and repeated evolution. Molecular Ecology, 32(20), 5451-5462. https://doi.org/10.1111/mec.17132 Kassandra L Ford, Rose Peterson, Maxwell Bernt, James S Albert, Convergence is Only Skin Deep: Craniofacial Evolution in Electric Fishes from South America and Africa (Apteronotidae and Mormyridae), Integrative Organismal Biology, Volume 4, Issue 1, 2022, obac022, https://doi.org/10.1093/iob/obac022 Xdc72O1fl09Trvk. (2021, 16 septiembre). Evolución divergente vs convergente: definiciones, diferencias y ejemplos | UNIGAL. 🎓 UNIGAL.MX 🎓. https://unigal.mx/evolucion-divergente-vs-convergente-definiciones-diferencias-y-ejemplos/

Bullard, B. (2020, octubre) WHY DOES EVOLUTION KEEP TURNING DIFFERENT SPECIES INTO CRABS?. syfy, https://www.syfy.com/syfy-wire/evolution-turns-different-species-into-crabs

Keiler, J. Wirkner S. C. Richter S. (2017, marzo), One hundred years of carcinization – the evolution of the crab-like habitus in Anomura (Arthropoda: Crustacea). https://academic.oup.com/biolinnean/article/121/1/200/3089703

Ejemplos

Comparative genomics of the coconut crab and other decapod crustaceans: exploring the molecular basis of terrestrial adaptation

Sebatian, cangrejo o langosta?

Why Crustaceans Keep Turning Into Crabs

https://www.nacionflix.com/disney/El-misterio-de-Sebastian-en-La-Sirenita-Cangrejo-o-Langosta-Descubriendo-la-verdad-20230526-0015.html

https://evolution-and-nature.medium.com/carcinization-why-crustaceans-keep-turning-into-crabs-541b8ebdc96e

https://pubmed.ncbi.nlm.nih.gov/33931033/

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