Upwelling affects food availability, impacting the morphological and molecular conditions of the herviborous limpet Fissurella crassa (Mollusca: Archeogastropoda)

José Pulgar, Marcela Aldana, Marco Alvarez, Roberto Garcia-Huidobro, Pilar Molina, Juan Pablo Morales, Víctor Manuel Pulgar

Resultado de la investigación: Article

8 Citas (Scopus)

Resumen

Oceanographical processes, such as upwelling, induce variations in nutrient availability in marine ecosystems, and evidence indicates that nutrient input can strongly influence the physiological activities, structure, and dynamics of marine communities. Intertidal organisms have long been considered ideal study units in which to quantify the relationship of physical variations and differential energy allocations in specimens that undergo environmental variations, such as observed with nutrient availability. In habitats with differential nutrient input (upwelling versus non-upwelling), both food availability (algae abundance) and seasonal gonadal and foot weight variations were determined in the keyhole limpet Fissurella crassa. Gonadal weight is used as a measure of reproduction allocation whereas foot weight is an indirect indicator of energy allocation towards survival. RNA:DNA ratio in limpets was used as an indicator of biosynthetic capability. Our results indicate that, in general, algae abundance, muscular foot weight, and gonadal weight were higher in upwelling sites during all seasons studied. The same result was found for RNA:DNA ratios. Energetic allocation in animals that inhabit intertidal upwelling habitats supported a constant allocation towards reproduction and soft tissues. In contrast, animals that inhabit non-upwelling habitats showed important energetic restrictions associated with higher water temperature and lower food availability. Our results clearly show that in the keyhole limpet F. crassa food availability is a more important determinant of an individual's condition than a physical variation such as environment temperature.

Idioma originalEnglish
Páginas (desde-hasta)797-802
Número de páginas6
PublicaciónJournal of the Marine Biological Association of the United Kingdom
Volumen93
N.º3
DOI
EstadoPublished - may 2013

Huella dactilar

Mollusca
food availability
upwelling
algae
RNA-DNA ratio
nutrient availability
habitat
energetics
habitats
alga
RNA
nutrient
animal
energy
nutrients
DNA
marine ecosystem
animals
water temperature
limpets

ASJC Scopus subject areas

  • Aquatic Science

Citar esto

@article{4686c6f701ca449fae15d581900c0b30,
title = "Upwelling affects food availability, impacting the morphological and molecular conditions of the herviborous limpet Fissurella crassa (Mollusca: Archeogastropoda)",
abstract = "Oceanographical processes, such as upwelling, induce variations in nutrient availability in marine ecosystems, and evidence indicates that nutrient input can strongly influence the physiological activities, structure, and dynamics of marine communities. Intertidal organisms have long been considered ideal study units in which to quantify the relationship of physical variations and differential energy allocations in specimens that undergo environmental variations, such as observed with nutrient availability. In habitats with differential nutrient input (upwelling versus non-upwelling), both food availability (algae abundance) and seasonal gonadal and foot weight variations were determined in the keyhole limpet Fissurella crassa. Gonadal weight is used as a measure of reproduction allocation whereas foot weight is an indirect indicator of energy allocation towards survival. RNA:DNA ratio in limpets was used as an indicator of biosynthetic capability. Our results indicate that, in general, algae abundance, muscular foot weight, and gonadal weight were higher in upwelling sites during all seasons studied. The same result was found for RNA:DNA ratios. Energetic allocation in animals that inhabit intertidal upwelling habitats supported a constant allocation towards reproduction and soft tissues. In contrast, animals that inhabit non-upwelling habitats showed important energetic restrictions associated with higher water temperature and lower food availability. Our results clearly show that in the keyhole limpet F. crassa food availability is a more important determinant of an individual's condition than a physical variation such as environment temperature.",
keywords = "food availability, keyhole limpet, life histories, RNA:DNA ratio, upwelling",
author = "Jos{\'e} Pulgar and Marcela Aldana and Marco Alvarez and Roberto Garcia-Huidobro and Pilar Molina and Morales, {Juan Pablo} and Pulgar, {V{\'i}ctor Manuel}",
year = "2013",
month = "5",
doi = "10.1017/S0025315412001415",
language = "English",
volume = "93",
pages = "797--802",
journal = "Journal of the Marine Biological Association of the United Kingdom",
issn = "0025-3154",
publisher = "Cambridge University Press",
number = "3",

}

Upwelling affects food availability, impacting the morphological and molecular conditions of the herviborous limpet Fissurella crassa (Mollusca : Archeogastropoda). / Pulgar, José; Aldana, Marcela; Alvarez, Marco; Garcia-Huidobro, Roberto; Molina, Pilar; Morales, Juan Pablo; Pulgar, Víctor Manuel.

En: Journal of the Marine Biological Association of the United Kingdom, Vol. 93, N.º 3, 05.2013, p. 797-802.

Resultado de la investigación: Article

TY - JOUR

T1 - Upwelling affects food availability, impacting the morphological and molecular conditions of the herviborous limpet Fissurella crassa (Mollusca

T2 - Archeogastropoda)

AU - Pulgar, José

AU - Aldana, Marcela

AU - Alvarez, Marco

AU - Garcia-Huidobro, Roberto

AU - Molina, Pilar

AU - Morales, Juan Pablo

AU - Pulgar, Víctor Manuel

PY - 2013/5

Y1 - 2013/5

N2 - Oceanographical processes, such as upwelling, induce variations in nutrient availability in marine ecosystems, and evidence indicates that nutrient input can strongly influence the physiological activities, structure, and dynamics of marine communities. Intertidal organisms have long been considered ideal study units in which to quantify the relationship of physical variations and differential energy allocations in specimens that undergo environmental variations, such as observed with nutrient availability. In habitats with differential nutrient input (upwelling versus non-upwelling), both food availability (algae abundance) and seasonal gonadal and foot weight variations were determined in the keyhole limpet Fissurella crassa. Gonadal weight is used as a measure of reproduction allocation whereas foot weight is an indirect indicator of energy allocation towards survival. RNA:DNA ratio in limpets was used as an indicator of biosynthetic capability. Our results indicate that, in general, algae abundance, muscular foot weight, and gonadal weight were higher in upwelling sites during all seasons studied. The same result was found for RNA:DNA ratios. Energetic allocation in animals that inhabit intertidal upwelling habitats supported a constant allocation towards reproduction and soft tissues. In contrast, animals that inhabit non-upwelling habitats showed important energetic restrictions associated with higher water temperature and lower food availability. Our results clearly show that in the keyhole limpet F. crassa food availability is a more important determinant of an individual's condition than a physical variation such as environment temperature.

AB - Oceanographical processes, such as upwelling, induce variations in nutrient availability in marine ecosystems, and evidence indicates that nutrient input can strongly influence the physiological activities, structure, and dynamics of marine communities. Intertidal organisms have long been considered ideal study units in which to quantify the relationship of physical variations and differential energy allocations in specimens that undergo environmental variations, such as observed with nutrient availability. In habitats with differential nutrient input (upwelling versus non-upwelling), both food availability (algae abundance) and seasonal gonadal and foot weight variations were determined in the keyhole limpet Fissurella crassa. Gonadal weight is used as a measure of reproduction allocation whereas foot weight is an indirect indicator of energy allocation towards survival. RNA:DNA ratio in limpets was used as an indicator of biosynthetic capability. Our results indicate that, in general, algae abundance, muscular foot weight, and gonadal weight were higher in upwelling sites during all seasons studied. The same result was found for RNA:DNA ratios. Energetic allocation in animals that inhabit intertidal upwelling habitats supported a constant allocation towards reproduction and soft tissues. In contrast, animals that inhabit non-upwelling habitats showed important energetic restrictions associated with higher water temperature and lower food availability. Our results clearly show that in the keyhole limpet F. crassa food availability is a more important determinant of an individual's condition than a physical variation such as environment temperature.

KW - food availability

KW - keyhole limpet

KW - life histories

KW - RNA:DNA ratio

KW - upwelling

UR - http://www.scopus.com/inward/record.url?scp=84876124698&partnerID=8YFLogxK

U2 - 10.1017/S0025315412001415

DO - 10.1017/S0025315412001415

M3 - Article

AN - SCOPUS:84876124698

VL - 93

SP - 797

EP - 802

JO - Journal of the Marine Biological Association of the United Kingdom

JF - Journal of the Marine Biological Association of the United Kingdom

SN - 0025-3154

IS - 3

ER -