title: Can upwelling signals be detected in intertidal fishes of different trophic levels?
abstract: For intertidal fishes belonging to three species, the herbivore Scartichthys viridis (Blenniidae), the omnivore Girella laevifrons (Kyphosidae) and the carnivore Graus nigra (Kyphosidae), mass and body size relationships were higher in individuals from an upwelling zone compared with those from a non-upwelling zone. RNA:DNA were higher in the herbivores and omnivores from the upwelling zone. Higher biomass and RNA:DNA in the upwelling intertidal fishes may be a consequence of an increased exposure to higher nutrient availability, suggesting that increased physiological conditioning in vertebrates from upwelling areas can be detected and measured using intertidal fishes of different trophic levels.
authors.affiliation: Departamento de Ecología & Biodiversidad, República 470, piso 3, Universidad Andres Bello, Santiago, Chile.
authors.forename: J
authors.initials: J
authors.lastname: Pulgar
authors.forename: E
authors.initials: E
authors.lastname: Poblete
authors.forename: M
authors.initials: M
authors.lastname: Alvarez
authors.forename: J P
authors.initials: JP
authors.lastname: Morales
authors.forename: B
authors.initials: B
authors.lastname: Aranda
authors.forename: M
authors.initials: M
authors.lastname: Aldana
authors.forename: V M
authors.initials: VM
authors.lastname: Pulgar
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D049628:Body Size; D004247:DNA / Q000032:analysis; D017753:Ecosystem; D005399:Fishes / Q000502:physiology*; D020387:Food Chain; D016014:Linear Models; D009752:Nutritional Status; D012313:RNA / Q000032:analysis; D014872:Water Movements
chemical_list: D012313:RNA; D004247:DNA
keywords: intertidal fishes; physiological condition; trophic levels