Parasites of freshwater fishes and the Great American Biotic Interchange: a bridge too far?
Por:
Choudhury, A., Garcia-Varela, M., Perez-Ponce de Leon, G.
Publicada:
1 mar 2017
Resumen:
We examine the extent to which adult helminths of freshwater fishes have
been part of the Great American Biotic Interchange (GABI), by
integrating information in published studies and new data from Panama
with fish biogeography and Earth history of Middle America. The review
illustrates the following: (1) the helminth fauna south of the
Trans-Mexican Volcanic Belt, and especially south of the Isthmus of
Tehuantepec, shows strong Neotropical affinities; (2) host-parasite
associations follow principles of the `biogeographic core fauna' in
which host-lineage specificity is pronounced; (3) phylogenetic analysis
of the widespread freshwater trematode family Allocreadiidae reveals a
complex history of host-shifting and co-diversification involving mainly
cyprinodontiforms and characids; (4) allocreadiids, monogeneans and
spiruridan nematodes of Middle American cyprinodontiforms may provide
clues to the evolutionary history of their hosts; and (5) phylogenetic
analyses of cryptogonimid trematodes may reveal whether or how cichlids
interacted with marine or brackish-water environments during their
colonization history. The review shows that `interchange' is limited and
asymmetrical, but simple narratives of northward isthmian dispersal will
likely prove inadequate to explain the historical biogeography of many
hostparasite associations in tropical Middle America, particularly those
involving poeciliids. Finally, our study highlights the urgent need for
targeted survey work across Middle America, focused sampling in river
drainages of Colombia and Venezuela, and deeper strategic sampling in
other parts of South America, in order to develop and test robust
hypotheses about fish-parasite associations in Middle America.
Filiaciones:
Choudhury, A.:
Division of Natural Sciences, St. Norbert College, 100 Grant Street, De Pere, Wisconsin 54115, USA
St Norbert Coll, Div Nat Sci, 100 Grant St, De Pere, WI 54115 USA
Garcia-Varela, M.:
Instituto de Biología, Universidad Nacional Autónoma de México, Ap. Postal 70-153. C.P. 04510, México D.F., Mexico
Univ Nacl Autonoma Mexico, Inst Biol, Ap Postal 70-153, Mexico City 04510, DF, Mexico
Perez-Ponce de Leon, G.:
Instituto de Biología, Universidad Nacional Autónoma de México, Ap. Postal 70-153. C.P. 04510, México D.F., Mexico
Univ Nacl Autonoma Mexico, Inst Biol, Ap Postal 70-153, Mexico City 04510, DF, Mexico
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