| Full text | |
| Author(s): |
Gomez-Bahamon, Valentina
[1, 2, 3, 4]
;
Marquez, Roberto
[5]
;
Jahn, Alex E.
[6]
;
Miyaki, Cristina Yumi
[7]
;
Tuero, Diego T.
[8]
;
Laverde-R, Oscar
[1, 9]
;
Restrepo, Silvia
[1]
;
Daniel Cadena, Carlos
[1]
Total Authors: 8
|
| Affiliation: | [1] Univ Andes, Dept Ciencias Biol, 1, 18A-12, Bogota - Colombia
[2] Univ Illinois, Dept Biol Sci, 845 West Taylor St, MC066, Chicago, IL 60607 - USA
[3] Field Museum Nat Hist, 1400 South Lake Shore Dr, Chicago, IL 60605 - USA
[4] SELVA Invest Conservac Neotrop, Diagonal 42A, 20-37, Bogota - Colombia
[5] Univ Chicago, Dept Ecol & Evolut, 1101 East 57th St, Chicago, IL 60637 - USA
[6] Univ Estadual Paulista, Inst Biociencias, Dept Zool, Ave 24A, 1515, Rio Claro, SP - Brazil
[7] Univ Sao Paulo, Inst Biociencias, Dept Genet & Biol Evolut, Rua Matao, 277 Butanta, BR-05508090 Sao Paulo, SP - Brazil
[8] Univ Buenos Aires, Dept Genet & Biol Evolut, Fac Ciencias Exactas & Nat, Inst IEGEBA, CONICET, Intendente Guiraldes 2160, C1428EGA, Buenos Aires, DF - Argentina
[9] Pontificia Univ Javeriana, Fac Ciencias, Dept Biol, Carrera 7, 40-62, Bogota - Colombia
Total Affiliations: 9
|
| Document type: | Journal article |
| Source: | Current Biology; v. 30, n. 7, p. 1312+, APR 6 2020. |
| Web of Science Citations: | 1 |
| Abstract | |
Migratory animals move up to thousands of kilometers every year {[}1]. Losses of migration (i.e., migratory drop-offs) occur when individuals of a migratory species stop migrating and establish founder sedentary populations, a phenomenon documented in birds {[}2-5] and butterflies {[}6]. In theory, losses-and also gains-of migration might promote speciation if sedentary and migratory populations become reproductively isolated {[}7-9]. Because migratory and sedentary strategies involve alternative physiological, behavioral, and morphological traits {[}10-13], divergence along multiple axes of organismal function is expected to accompany switches in migratory behavior, potentially accelerating speciation. We present evidence of speciation driven by a migratory drop-off in the fork-tailed flycatcher (Tyrannus savana) resulting in reproductive isolation likely driven by changes in breeding schedules (allochronic speciation {[}13-15]) and geographic isolation of breeding grounds (allopatric speciation {[}16]). Phylogenetic analyses across New World flycatchers (Tyrannidae) showed that an association between speciation and drop-offs is also observable at a macroevolutionary scale. Loss of migration was significantly more frequent than its gain, and speciation rates of migratory and partially migratory lineages (i.e., species having both migratory and sedentary populations) exceeded those of sedentary lineages. Models of trait evolution indicated that partial migration is an intermediate step between migratory and sedentary states in this family. Given that partial migration is widespread across migratory animals (e.g., of all migratory birds, ca. 51% are partially migratory {[}5]), speciation via switches in migratory behavior might be an important yet overlooked mechanism of animal diversification. (AU) | |
| FAPESP's process: | 13/50297-0 - Dimensions US-BIOTA São Paulo: a multidisciplinary framework for biodiversity prediction in the Brazilian Atlantic forest hotspot |
| Grantee: | Cristina Yumi Miyaki |
| Support Opportunities: | BIOTA-FAPESP Program - Thematic Grants |
| FAPESP's process: | 12/17225-2 - The evolution of bird migration: does current theory apply in South America? |
| Grantee: | Alejandro Edward Jahn |
| Support Opportunities: | Research Grants - Young Investigators Grants |