{"title":"Do fatty acid profiles help to explain sesarmid crabs food choice","authors":"I. Mchenga, M. Tsuchiya","doi":"10.5053/EJOBIOS.2011.5.0.11","DOIUrl":null,"url":null,"abstract":"We evaluate the use of the combination approach of fatty acid (FA) profiles and Carbon/Nitrogen ratios to investigate the feeding preference of the sesarmid crab Perisesarma bidens on different diets. The alga Enteromorpha intestinalis, Kandelia obovata leaves and propagules were used in a laboratory feeding assay. Consumption rates of P. bidens were higher in the order of algae= leaves>propagules. C/N ratios indicate that P. bidens significantly assimilates both nitrogen and carbon from algae, nitrogen but not carbon from brown leaves, and only carbon from propagules. A comparison of FAs in tissues and faeces indicated that crabs efficiently assimilate essential FAs (EFAs) from a given diet in the order of algae>leaves>propagules. Results of higher EFA ratios ( 3/ 6) match with that of low C/N ratios indicating that algae had higher nutritional value than leaves and propagules. FA profiles suggested that brown leaf palatability was due to decomposing activity by bacteria and fungi in the leaf tissues. These data suggest that the combination of FA profiles and C/N ratios provides a better understanding of the diet choice by sesarmid crabs.","PeriodicalId":11848,"journal":{"name":"Eurasian Journal of Biosciences","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2011-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5053/EJOBIOS.2011.5.0.11","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Eurasian Journal of Biosciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5053/EJOBIOS.2011.5.0.11","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Agricultural and Biological Sciences","Score":null,"Total":0}
引用次数: 3
Abstract
We evaluate the use of the combination approach of fatty acid (FA) profiles and Carbon/Nitrogen ratios to investigate the feeding preference of the sesarmid crab Perisesarma bidens on different diets. The alga Enteromorpha intestinalis, Kandelia obovata leaves and propagules were used in a laboratory feeding assay. Consumption rates of P. bidens were higher in the order of algae= leaves>propagules. C/N ratios indicate that P. bidens significantly assimilates both nitrogen and carbon from algae, nitrogen but not carbon from brown leaves, and only carbon from propagules. A comparison of FAs in tissues and faeces indicated that crabs efficiently assimilate essential FAs (EFAs) from a given diet in the order of algae>leaves>propagules. Results of higher EFA ratios ( 3/ 6) match with that of low C/N ratios indicating that algae had higher nutritional value than leaves and propagules. FA profiles suggested that brown leaf palatability was due to decomposing activity by bacteria and fungi in the leaf tissues. These data suggest that the combination of FA profiles and C/N ratios provides a better understanding of the diet choice by sesarmid crabs.
期刊介绍:
EurAsian Journal of BioSciences (Abbrev. Eurasia J Biosci or EJOBIOS) is an international, refereed electronic journal. It publishes the results of original research in the field of biological sciences restricted tomorphology, physiology, genetics, taxonomy, ecology and biogeography of both prokaryotic and eucaryotic organisms. The journal encourages submission of manuscripts dealing with plant biology, animal biology, plant physiology, microbiology, hydrobiology, ecology and environmental science, ethnobiology, biodiversity and conservation biology. EurAsian Journal of BioSciences publishes original articles in the following areas: -Agriculture, Fisheries & Food -Anatomy & Morphology -Behavioural Sciences -Biology, Biochemistry and Biotechnology -Biophysics -Biology Education -Cellular Biology and Anatomical Sciences -Ecology, Evolution & Environment -Entomology -Forestry -General Biology -Genetics & Heredity -Life Sciences - Other topics -Microbiology and Immunology -Molecular Biology -Mycology -Palaeontology -Parasitology -Pharmacology & Pharmacy -Physiology and Related Sciences -Plant Sciences -Toxicology -Veterinary Sciences -Virology -Zoology