Contrasting patterns of morphological variation with dietary preferences in Micropogonias furnieri : insights from stable-isotope and digestive-trait analyses

2013 ◽  
Vol 82 (5) ◽  
pp. 1641-1658 ◽  
Author(s):  
A. D'Anatro ◽  
D. E. Naya ◽  
E. P. Lessa ◽  
O. Defeo
Keyword(s):  
Stable Isotope ◽  
Morphological Variation ◽  
Dietary Preferences ◽  
Micropogonias Furnieri

Rise and Fall of a Medieval Trade Centre: Economic Change from Viking Haithabu to Medieval Schleswig Revealed by Stable Isotope Analysis

2013 ◽  
Vol 16 (1) ◽  
pp. 137-166 ◽  
Author(s):  
Gisela Grupe ◽  
Claus von Carnap-Bornheim ◽  
Cornelia Becker
Keyword(s):  
Stable Isotope ◽  
Isotope Analysis ◽  
Bone Collagen ◽  
Mixing Models ◽  
Isotopic Data ◽  
Subsistence Economy ◽  
Dietary Preferences ◽  
Isotope Mass Balance ◽  
Protein Supply ◽  
Over Time

Viking Haithabu and its successor, the medieval town of Schleswig, were important international trade centres. Human skeletal finds spanning a period of approximately 400 years represent the bodily relics of the former inhabitants, who witnessed the rise and fall of these trade centres. Analysis of δ13C and δ15N from bone collagen was performed to reconstruct and detect changes in dietary preferences over time. A comparison with the respective isotopic data obtained from a large archaeofaunal sample resulted in a classic ‘mixing muddle’ that could only be deciphered using isotope mass balance mixing models applied on an individual basis. It was found that the overall subsistence economy shifted over time from a focus on fishing to one based predominantly on farming. The move to utilizing a new main source of protein did not impair overall protein supply. In addition, changing living conditions experienced by the inhabitants of Schleswig may have led to a change in infant nursing strategy.

scholarly journals Use of multielement stable isotope ratios to investigate ontogenetic movements of Micropogonias furnieri in a tropical Brazilian estuary

2018 ◽  
Vol 75 (6) ◽  
pp. 977-986 ◽  
Author(s):  
Ana Carolina Pizzochero ◽  
Loïc N. Michel ◽  
Simon R. Chenery ◽  
Ian D. McCarthy ◽  
Marcelo Vianna ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Continental Shelf ◽  
Feeding Habits ◽  
Isotope Ratios ◽  
Stable Isotope Ratios ◽  
Isotopic Niche ◽  
Guanabara Bay ◽  
Western Atlantic ◽  
Ecological Features ◽  
Micropogonias Furnieri

The whitemouth croaker, Micropogonias furnieri, is a long-lived fish of high commercial importance in the western Atlantic Ocean. Here, we used stable isotope ratios of carbon, sulfur, and nitrogen and isotopic niche metrics (SIBER) to study feeding habits and track habitat use by whitemouth croakers in Guanabara Bay, an estuary in Rio de Janeiro state, Brazil. Our results highlighted size-related habitat segregation, with small juvenile fishes (<30 cm) residing mostly inside estuaries and large adult fishes (>60 cm) feeding mainly in Continental Shelf waters. Medium adult fishes (30–60 cm) appear to feed in multiple coastal and Continental Shelf habitats. Moreover, their feeding ecology showed strong temporal differences, linked with seasonal and, to a lesser extent, interannual variation in oceanographic features of the ecosystem in which they live. Overall, these differences in ecological features suggest that (1) adult and juvenile whitemouth croakers should be treated as different components of the food web and (2) the conservation of these habitats should be prioritized to better manage and sustain the coastal fisheries in Guanabara Bay.

Vitamin A Value of Plant Food Provitamin A - Evaluated by the Stable Isotope Technologies

2014 ◽  
Vol 84 (Supplement 1) ◽  
pp. 25-29 ◽  
Author(s):  
Guangwen Tang
Keyword(s):  
Stable Isotope ◽  
Vitamin A ◽  
Provitamin A ◽  
Animal Origin ◽  
Plant Food ◽  
Plant Foods ◽  
A Value ◽  
Provitamin A Carotenoids ◽  
Β Carotene

Humans need vitamin A and obtain essential vitamin A by conversion of plant foods rich in provitamin A and/or absorption of preformed vitamin A from foods of animal origin. The determination of the vitamin A value of plant foods rich in provitamin A is important but has challenges. The aim of this paper is to review the progress over last 80 years following the discovery on the conversion of β-carotene to vitamin A and the various techniques including stable isotope technologies that have been developed to determine vitamin A values of plant provitamin A (mainly β-carotene). These include applications from using radioactive β-carotene and vitamin A, depletion-repletion with vitamin A and β-carotene, and measuring postprandial chylomicron fractions after feeding a β-carotene rich diet, to using stable isotopes as tracers to follow the absorption and conversion of plant food provitamin A carotenoids (mainly β-carotene) in humans. These approaches have greatly promoted our understanding of the absorption and conversion of β-carotene to vitamin A. Stable isotope labeled plant foods are useful for determining the overall bioavailability of provitamin A carotenoids from specific foods. Locally obtained plant foods can provide vitamin A and prevent deficiency of vitamin A, a remaining worldwide concern.

Morphological variation inNepeta nuda L

1982 ◽  
Vol 93 (1-2) ◽  
pp. 71-76
Author(s):  
S. Kokkini ◽  
D. Babalonas
Keyword(s):  
Morphological Variation

Stable isotope metabolic labeling of a mouse model reveals synaptic biomarkers for anxiety disorders

2009 ◽  
Vol 42 (05) ◽  
Author(s):  
MD Filiou ◽  
YY Zhang ◽  
B Bisle ◽  
E Frank ◽  
MS Kessler ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Mouse Model ◽  
Anxiety Disorders ◽  
Metabolic Labeling
Sign in / Sign up

Export Citation Format

Share Document