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Molecular Diet Analysis of Adelie Penguins (Pygoscelis adeliae) in the Ross Sea Using Fecal DNA

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Title
Molecular Diet Analysis of Adelie Penguins (Pygoscelis adeliae) in the Ross Sea Using Fecal DNA
Other Titles
로스해에 서식하는 아델리펭귄(Pygoscelis adeliae)의 분변 DNA를 이용한 먹이 분석
Authors
Tabassum, Nazia
Lee, Ji-Hyun
Lee, Soo-Rin
Kim, Jong-U
Park, Hyun
Kim, Hyun-Woo
Kim, Jeong-Hoon
Subject
Life Sciences & Biomedicine - Other Topics
Keywords
Pygoscelis adeliaeRoss SeaNGSmetabarcodingdiet analysis
Issue Date
2022-02
Citation
Tabassum, Nazia, et al. 2022. "Molecular Diet Analysis of Adelie Penguins (Pygoscelis adeliae) in the Ross Sea Using Fecal DNA". BIOLOGY-BASEL, 11(2): 182-196.
Abstract
Simple Summary The diet of Adelie penguins, Pygoscelis adeliae, in the Ross Sea was studied applying quantitative polymerase chain reaction (qPCR) protocols to their feces. Two krill species (Euphausia superba and Euphausia crystallorophias) and notothenioid fish (mainly Pleuragramma antarctica and Pagothenia borchgrevinki) were among the most abundant components of the diet. The composition of the two krill species and notothenioid fish was found to be strongly related to the geographic characteristics of the Ross Sea. The diet of Adelie penguins, Pygoscelis adeliae, is a useful indicator in understanding the ecological conditions of their habitats. The diets of Adelie penguins were studied using metabarcoding and quantitative PCR (qPCR) analyses of fecal DNA from seven habitats along the Ross Sea region. Using metabarcoding analysis with dual universal primers (18Sv9 and miniFish), the overall diet composition and detailed information about piscine prey were clearly elucidated. It was found that two krill species (Euphausia superba and Euphausia crystallorophias) and notothenioid fish were the most abundant in the diets of Adelie penguins. Among the notothenioid prey, Pleuragramma antarctica (56.50%) and Pagothenia borchgrevinki (18.21%) were the two most abundant species. qPCR analysis showed a significant geographic difference in the composition of main prey. Penguins inhabiting outbound parts of the Ross Sea (Capes Adare (CA) and Duke of York Island (DY)) mainly preyed on E. superba, without any significant changes in prey composition. By contrast, those inhabiting the inbound parts of the Ross Sea (Edmonson Point (EP) and Inexpressible Island (II)) preyed on E. crystallorophias and notothenioid fish rather than E. superba. Compared with the outbound habitats, prey compositions for penguins inhabiting the inbound regions were significantly different year to year, which was presumably due to the food availability based on the annual environmental and meteorological conditions of the coastal region along with the inbound parts of the Ross Sea.
URI
https://repository.kopri.re.kr/handle/201206/13262
DOI
http://dx.doi.org/10.3390/biology11020182
Type
Article
Station
Jang Bogo Station
Indexed
SCIE
Appears in Collections  
2021-2022, Ecosystem Structure and Function of Marine Protected Area (MPA) in Antarctica (21-22) / Kim, Jeong-Hoon (PM21060)
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