ISOTOPIC ANALYSIS OF δ13C, δ15N, AND δ34S "A FEEDING TALE" IN TEETH OF THE LONGBEAKED COMMON DOLPHIN, DELPHINUS CAPENSIS
Stable isotopic analyses of carbon, nitrogen, and sulfur were performed on teeth of different ages and sexes of the longbeaked common dolphin, Delphinus capensis, from the Gulf of California. Similarities in diet are suggested between the sexes, with no significant differences in isotopic compositio...
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| Published in | Marine mammal science Vol. 22; no. 4; pp. 831 - 846 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | English |
| Published |
Malden, USA
Blackwell Publishing Inc
01.10.2006
Blackwell |
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| Abstract | Stable isotopic analyses of carbon, nitrogen, and sulfur were performed on teeth of different ages and sexes of the longbeaked common dolphin, Delphinus capensis, from the Gulf of California. Similarities in diet are suggested between the sexes, with no significant differences in isotopic compositions being observed. Differences in the δ13C, δ15N, and δ34S signatures were found among the age groups (nursing calf, juvenile, subadult, and adult). These data suggest that this species is generally a coastal feeder, and that it changes its feeding habits with increasing age, drawing more nutrition from higher trophic level organisms later in life. |
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| AbstractList | Stable isotopic analyses of carbon, nitrogen, and sulfur were performed on teeth of different ages and sexes of the longbeaked common dolphin, Delphinus capensis, from the Gulf of California. Similarities in diet are suggested between the sexes, with no significant differences in isotopic compositions being observed. Differences in the δ13C, δ15N, and δ34S signatures were found among the age groups (nursing calf, juvenile, subadult, and adult). These data suggest that this species is generally a coastal feeder, and that it changes its feeding habits with increasing age, drawing more nutrition from higher trophic level organisms later in life. |
| Author | Galván-Magaña, Felipe Niño-Torres, Carlos Alberto Macko, Stephen A. Escobar-Briones, Elva Gallo-Reynoso, Juan Pablo |
| Author_xml | – sequence: 1 givenname: Carlos Alberto surname: Niño-Torres fullname: Niño-Torres, Carlos Alberto organization: Posgrado en Ciencias del Mar y Limnología Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Apdo. Postal 70-305 Ciudad Universitaria, 04510 Mexico, D.F., Mexico – sequence: 2 givenname: Juan Pablo surname: Gallo-Reynoso fullname: Gallo-Reynoso, Juan Pablo email: Centro de Investigación en Alimentación y Desarrollo A.C. Carretera a Varadero Nacional, Km. 6.6 Colonia Las Playitas, C.P. 85480 Guaymas, Sonora, Mexico jpgallo@invitados.itesm.mx organization: Centro de Investigación en Alimentación y Desarrollo A.C. Carretera a Varadero Nacional, Km. 6.6 Colonia Las Playitas, C.P. 85480 Guaymas, Sonora, Mexico E-mail: jpgallo@invitados.itesm.mx – sequence: 3 givenname: Felipe surname: Galván-Magaña fullname: Galván-Magaña, Felipe organization: Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Apdo. Postal 592, La Paz, Baja California Sur, Mexico – sequence: 4 givenname: Elva surname: Escobar-Briones fullname: Escobar-Briones, Elva organization: Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Apdo. Postal 70-305 Ciudad Universitaria, 04510 Mexico, D.F., Mexico – sequence: 5 givenname: Stephen A. surname: Macko fullname: Macko, Stephen A. organization: Department of Environmental Sciences, University of Virginia, Charlottesville, Virginia 22903, U.S.A |
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| Keywords | Gulf of California Isotopic analysis Delphinus capensis stable isotopes Teeth Feeding Marine environment Vertebrata Mammalia Diet common dolphin Trophic level Delphinus delphis Cetacea Tooth feeding habits Isotopes |
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| References_xml | – volume: 39 start-page: 377 year: 2002 end-page: 390 article-title: Long‐term changes in the trophic level of the Celtic Sea fish community and fish market price distribution publication-title: Journal of Applied Ecology – volume: 15 start-page: 335 year: 1999 end-page: 350 article-title: The diets of modern and historic bottlenose dolphin populations reflected through stable isotopes publication-title: Marine Mammal Science – volume: 129 start-page: 461 year: 2001 end-page: 472 article-title: Differentiating aquatic mammal habitat and foraging ecology with stable isotopes in tooth enamel publication-title: Oecologia – volume: 121 start-page: 99 year: 1995 end-page: 116 article-title: The role of standing dead and benthic microalgae in salt marsh food webs: Considerations based on multiple stable isotope analysis publication-title: Marine Ecology Progress Series – volume: 210 start-page: 203 year: 2001 end-page: 221 article-title: Marine mammals and the community structure of the Estuary and Gulf of St. Lawrence, Canada: Evidence from stable isotopes analysis publication-title: Marine Ecology Progress Series – volume: 48 start-page: 2258 year: 1991 end-page: 2265 article-title: Stable isotopes of sulfur, carbon and nitrogen as indicators of trophic level and fish migration in the lower Mackenzie River basin publication-title: Canadian Journal of Fisheries and Aquatic Sciences – start-page: 97 year: 1984 end-page: 134 – volume: 143 start-page: 505 year: 2003 end-page: 510 article-title: Estimating the latitudinal origins of migratory birds using hydrogen and sulfur isotopes in feathers: Influence of marine prey base publication-title: Oecologia – volume: 15 start-page: 314 year: 1999 end-page: 334 article-title: Dietary studies of marine mammals using stable carbon and nitrogen isotopic ratios of teeth publication-title: Marine Mammal Science – start-page: 30 year: 1991 end-page: 37 – volume: 102 start-page: 378 year: 2003 end-page: 390 article-title: Variation in trophic shift for stable isotope ratios of carbon, nitrogen, and sulfur publication-title: Oikos – volume: 422 start-page: 1 year: 1994 end-page: 35 article-title: Evidence of two species of common dolphins (genus ) from the eastern North Pacific publication-title: Contribution in Science. 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| SubjectTerms | Animal and plant ecology Animal, plant and microbial ecology Animals Autoecology Biological and medical sciences common dolphin Delphinus capensis feeding habits Fundamental and applied biological sciences. Psychology Gulf of California Mammalia stable isotopes trophic level Vertebrata Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution |
| Title | ISOTOPIC ANALYSIS OF δ13C, δ15N, AND δ34S "A FEEDING TALE" IN TEETH OF THE LONGBEAKED COMMON DOLPHIN, DELPHINUS CAPENSIS |
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