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DOI:	10.1371/journal.pone.0133406
论文题名:	Trophic Ecology of Atlantic Bluefin Tuna (Thunnusthynnus) Larvae from the Gulf of Mexico and NW Mediterranean Spawning Grounds: A Comparative Stable Isotope Study
作者:	Raúl Laiz-Carrión; Trika Gerard; Amaya Uriarte; Estrella Malca; José María Quintanilla; Barbara A. Muhling; Francisco Alemany; Sarah L. Privoznik; Akihiro Shiroza; John T. Lamkin; Alberto García
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2015
发表日期:	2015-7-30
卷:	10, 期:7
语种:	英语
英文关键词:	Larvae ; Spawning ; Food web structure ; Gulf of Mexico ; Tuna ; Stable isotopes ; Plankton ; Zooplankton
英文摘要:	The present study uses stable isotopes of nitrogen and carbon (δ15Nandδ13C) as trophic indicators for Atlantic bluefin tuna larvae (BFT) (6–10 mm standard length) in the highly contrasting environmental conditions of the Gulf of Mexico (GOM) and the Balearic Sea (MED). These regions are differentiated by their temperature regime and relative productivity, with the GOM being significantly warmer and more productive. MED BFT larvae showed the highest δ15N signatures, implying an elevated trophic position above the underlying microzooplankton baseline. Ontogenetic dietary shifts were observed in the BFT larvae from the GOM and MED which indicates early life trophodynamics differences between these spawning habitats. Significant trophic differences between the GOM and MED larvae were observed in relation to δ15N signatures in favour of the MED larvae, which may have important implications in their growth during their early life stages.These low δ15N levels in the zooplankton from the GOM may be an indication of a shifting isotopic baseline in pelagic food webs due to diatrophic inputs by cyanobacteria. Lack of enrichment for δ15N in BFT larvae compared to zooplankton implies an alternative grazing pathway from the traditional food chain of phytoplankton—zooplankton—larval fish. Results provide insight for a comparative characterization of the trophic pathways variability of the two main spawning grounds for BFT larvae.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0133406&type=printable
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资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/21118
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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作者单位:

Instituto Español de Oceanografía—Centro Oceanográfico de Málaga (COM-IEO), Fuengirola, Spain;Southeast Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration (NOAA), Miami, Florida, United States of America;South Florida Campus- University of Phoenix, Miramar, Florida, United States of America;Instituto Español de Oceanografía—Centro Oceanográfico de Málaga (COM-IEO), Fuengirola, Spain;South Florida Campus- University of Phoenix, Miramar, Florida, United States of America;Cooperative Institute for Marine and Atmospheric Studies (CIMAS), University of Miami, Miami, Florida, United States of America;Instituto Español de Oceanografía—Centro Oceanográfico de Málaga (COM-IEO), Fuengirola, Spain;Princeton University Program in Atmospheric and Oceanic Science, Forrestal Campus/Sayre Hall, Princeton, New Jersey, United States of America;NOAA Geophysical Fluid Dynamics Laboratory, 201 Forrestal Road, Princeton, New Jersey, United States of America;Instituto Español de Oceanografía Centro Oceanográfico de Baleares (COB-IEO), Palma de Mallorca, Balearic Islands, Spain;South Florida Campus- University of Phoenix, Miramar, Florida, United States of America;Cooperative Institute for Marine and Atmospheric Studies (CIMAS), University of Miami, Miami, Florida, United States of America;South Florida Campus- University of Phoenix, Miramar, Florida, United States of America;Cooperative Institute for Marine and Atmospheric Studies (CIMAS), University of Miami, Miami, Florida, United States of America;Southeast Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration (NOAA), Miami, Florida, United States of America;Instituto Español de Oceanografía—Centro Oceanográfico de Málaga (COM-IEO), Fuengirola, Spain

Recommended Citation:

Raúl Laiz-Carrión,Trika Gerard,Amaya Uriarte,et al. Trophic Ecology of Atlantic Bluefin Tuna (Thunnusthynnus) Larvae from the Gulf of Mexico and NW Mediterranean Spawning Grounds: A Comparative Stable Isotope Study[J]. PLOS ONE,2015-01-01,10(7)

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