IEGEBA   24053
INSTITUTO DE ECOLOGIA, GENETICA Y EVOLUCION DE BUENOS AIRES
Unidad Ejecutora - UE
capítulos de libros
Título:
Parallels and contrasts between Limnoperna fortunei and Dreissena species
Autor/es:
KARATAYEV ALEXANDER; BOLTOVSKOY DEMETRIO; BURLAKOVA LYUBOV; PADILLA DIANNA
Libro:
Limnoperna fortunei: the ecology, distribution and control of a swiftly spreading invasive fouling mussel
Editorial:
Springer International Publishing
Referencias:
Lugar: Cham; Año: 2015; p. 261 - 297
Resumen:
zebra mussel), and Dreissena rostriformis bugensis (the quagga mussel) are considered
among the most aggressive freshwater invaders. All three species share several
biological traits, such as their sessile mode of life attached to hard substrata by a
byssus (although quagga mussels can also dwell on muddy bottoms), similar sizes,
similar longevity, and similar time to sexual maturity. The spawning period, however,
is usually longer for L. fortunei. Ecologically, they also share similarities (e.g.,
suspension feeding mode), but the dreissenids thrive and reproduce in colder waters
(especially D. r. bugensis), and are significantly less tolerant to low pH and calcium
concentrations, hypoxic conditions, and pollution. Rates of intrabasin spread of L.
fortunei in South America are roughly similar to those of D. polymorpha in North
America, but interbasin spread is generally faster for the zebra mussel, probably
partly due to cultural and economic differences between their respective invasive
ranges. Geographic spread of quagga mussels has been much slower than that of
zebra mussels, but once the former colonize waterbodies already populated by zebra
mussels, they usually become dominant, both spatially and numerically. Judging
from their respective environmental tolerance limits, in particular calcium concentrations,
it is expected that both species of Dreissena may eventually colonize much
of Europe, Asia, and North America, but colonization of South America, Africa, and
Australia is less likely. In contrast, L. fortunei, which tolerates much lower calcium
concentrations, could spread to areas presently occupied by the dreissenids as well
as Africa and Australia. Should the three species overlap, it seems likely that L.
fortunei will outcompete the dreissenids in warmer, more polluted, less oxygenated,
and more acidic waters as well as in waters with lower calcium concentrations.
However, the outcome of their competitive interactions when conditions are suitable
for all three species is unclear. L. fortunei and both species of Dreissena are
functionally similar, and as a consequence, many of their impacts on the systems
they invade are also similar, yet the magnitude of these effects, and in some cases
even their sign, can differ widely depending on the invasive species and environmental
constraints. Future research on the golden mussel should focus on shedding
light on the many unknown aspects of its biology and ecology, which are particularly
critical for a comprehensive assessment of its interactions with local biota.