Pubblicazione scientifica

Does Body Shape in Fundulus Adapt to Variation in Habitat Salinity?

FILONE TECNOLOGICO	TEMA
trasformazione e commercializzazione

RIASSUNTO

Understanding the ecological pressures that generate variation in body shape is important because body shape profoundly affects physiology and overall fitness. Using Fundulus, a genus of fish that exhibits considerable morphological and physiological variation with evidence of repeated transitions between freshwater and saltwater habitats, we tested whether habitat salinity has influenced the macroevolution of body shape at different stages in development. After accounting for phylogenetic inertia, we find that body shape deviates from the optimal streamlined shape in a manner consistent with different osmoregulatory pressures exerted by different salinity niches at every stage of ontogeny that we examined. We attribute variation in body shape to differential selection for osmoregulatory efficiency because: (1) saline intolerant species developed body shapes with relatively low surface areas more conducive to managing osmoregulatory demands and (2) inland species that exhibit high salinity tolerances have body shapes similar to saline tolerant species in marine environments.

DATA

Data di pubblicazione: 15/11/2019

AUTORI

STYGA JOSEPH M
PIENAAR JASON
SCOTT PETER A
EARLEY RYAN L

ENTE DI AFFERENZA

DEPT BIOLOGICAL SCIENCES UNIV ALABAMA TUSCALOOSA AL US
BIOLOGY PROGRAM CTR COLLEGE DANVILLE KY US
DEPT ECOLOGY & EVOLUTIONARY BIOLOGY UNIV CALIFORNIA LOS ANGELES LOS ANGELES CA US

RIVISTA

Frontiers in Physiology, 10, 1400

IMPACT FACTOR

3,160

indietro