scholarly journals Does rapid glacial recession affect feeding habits of alpine stream insects?

2020 ◽  
Vol 66 (1) ◽  
pp. 114-129
Author(s):  
Mirela Sertić Perić ◽  
Jens M. Nielsen ◽  
Carsten J. Schubert ◽  
Christopher T. Robinson
Keyword(s):  
Feeding Habits ◽  
Stream Insects ◽  
Alpine Stream

Dietary and Stable Isotope (δ 13C, δ 15N) Analyses in Alpine Stream Insects

2003 ◽  
Vol 88 (34) ◽  
pp. 314-331 ◽  
Author(s):  
Leopold Füreder ◽  
Camille Welter ◽  
John K. Jackson
Keyword(s):  
Stable Isotope ◽  
Stream Insects ◽  
Δ 13C ◽  
Alpine Stream ◽  
Δ 15N

Climate-induced glacier and snow loss imperils alpine stream insects

2016 ◽  
Vol 23 (7) ◽  
pp. 2577-2589 ◽  
Author(s):  
J. Joseph Giersch ◽  
Scott Hotaling ◽  
Ryan P. Kovach ◽  
Leslie A. Jones ◽  
Clint C. Muhlfeld
Keyword(s):  
Stream Insects ◽  
Alpine Stream

Utilizing next-generation sequencing to identify prey DNA in western North Atlantic grey seal Halichoerus grypus diet

2020 ◽  
Vol 655 ◽  
pp. 227-240
Author(s):  
KR Flanders ◽  
ZH Olson ◽  
KA Ono
Keyword(s):  
Next Generation Sequencing ◽  
Feeding Habits ◽  
Atlantic Menhaden ◽  
Halichoerus Grypus ◽  
Frequency Of Occurrence ◽  
Grey Seal ◽  
Next Generation ◽  
Significant Difference ◽  
Generation Sequencing ◽  
Seal Diet

Increasing grey seal Halichoerus grypus abundance in coastal New England is leading to social, political, economic, and ecological controversies. Central to these issues is the foraging ecology and diet composition of the seals. We studied grey seal feeding habits through next-generation sequencing of prey DNA using 16S amplicons from seal scat (n = 74) collected from a breeding colony on Monomoy Island in Massachusetts, USA, and report frequency of occurrence and relative read abundance. We also assigned seal sex to scat samples using a revised PCR assay. In contrast to current understanding of grey seal diet from hard parts and fatty acid analysis, we found no significant difference between male and female diet measured by alpha and beta diversity. Overall, we detected 24 prey groups, 18 of which resolved to species. Sand lance Ammodytes spp. were the most frequently consumed prey group, with a frequency of occurrence (FO) of 97.3%, consistent with previous studies, but Atlantic menhaden Brevoortia tyrannus, the second most frequently consumed species (FO = 60.8%), has not previously been documented in US grey seal diet. Our results suggest that a metabarcoding approach to seal food habits can yield important new ecological insights, but that traditional hard parts analysis does not underestimate consumption of Atlantic cod Gadus morhua (FO = 6.7%, Gadidae spp.) and salmon Salmo salar (FO = 0%), 2 particularly valuable species of concern.

Feeding Habits of Indo-Pacific Humpback Dolphins (Sousa chinensis) Stranded in Hong Kong

2004 ◽  
Vol 30 (1) ◽  
pp. 179-188 ◽  
Author(s):  
Nélio B. Barros ◽  
Thomas A. Jefferson ◽  
E.C.M. Parsons
Keyword(s):  
Hong Kong ◽  
Feeding Habits ◽  
Sousa Chinensis
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