Seasonal Changes in the Total Lipid Content of the Opossum Shrimp, Mysis relicta (Malacostraca: Mysidacea)

1994 ◽  
Vol 51 (9) ◽  
pp. 1935-1941 ◽  
Author(s):  
Katherine I. Adare ◽  
David C. Lasenby
Keyword(s):  
Life Cycle ◽  
Total Lipid ◽  
Lipid Content ◽  
Organic Contaminants ◽  
Seasonal Changes ◽  
Total Lipid Content ◽  
Dry Weight ◽  
Mature Female ◽  
Mysis Relicta ◽  
The Relationship

Seasonal changes in the percent total lipid content of Mysis relicta were investigated in four lakes in southern Ontario. Stony and Twelve Mile lakes contain populations of Mysis with a 1-yr life cycle, while Crystal and Boshkung lakes have populations with a 2-yr life cycle. Mature female and male mysids have a lipid content between 15 and 33% and between 14 and 25%, respectively, while juvenile mysids have approximately 10% less total lipids than adults. The relationship between total lipid and lipid-free dry weight is best described by the power curve Y = aXb and is the same (ANCOVA, p < 0.05) in all four mysid populations. Lipid content accumulates steadily with time as the mysid grows, and lipid reserves do not appear to influence mysid time to maturity. For studies on the transfer of energy and lipophilic organic contaminants through the food web, the results imply that seasonal and body size differences of organisms are important considerations.

A review of the relationship between acute toxicity (LC50) of γ-hexachlorocyclohexane (γ-HCH, Lindane) and total lipid content of different fish species

Toxicology ◽  
1993 ◽  
Vol 83 (1-3) ◽  
pp. 169-179 ◽  
Author(s):  
Harald J. Geyer ◽  
Christian E. Steinberg ◽  
Irene Scheunert ◽  
Rainer Brüggemann ◽  
Werner Schütz ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Fish Species ◽  
Total Lipid ◽  
Lipid Content ◽  
Total Lipid Content ◽  
The Relationship

Seasonal Patterns in Lipid Content of Lake Michigan Macroinvertebrates

1985 ◽  
Vol 42 (11) ◽  
pp. 1827-1832 ◽  
Author(s):  
Wayne S. Gardner ◽  
Thomas F. Nalepa ◽  
William A. Frez ◽  
Elizabeth A. Cichocki ◽  
Peter F. Landrum
Keyword(s):  
Lipid Content ◽  
Seasonal Changes ◽  
Loss Rate ◽  
Lake Michigan ◽  
Dry Weight ◽  
Seasonal Patterns ◽  
Organic Detritus ◽  
Mysis Relicta ◽  
Chironomid Larvae

Lipids in several taxa of macroinvertebrates from Lake Michigan were determined seasonally to help define the role of these animals in transferring energy in the lake. Ranges of mean lipid content relative to ash-free dry weight (AFDW) throughout the year were as follows: amphipods (Pontoporeia hoyi), 21–54%; lumbriculid oligochaetes (Stylodrilus heringianus), 12–19%; tubificid oligochaetes, 9–22%; chironomid larvae, 9–39%; and Mysis relicta, 26–37%. A pattern of increasing lipid content during spring was observed for P. hoyi, chironomids, and M. relicta, but seasonal changes were not apparent for oligochaetes. Excluding M. relicta, P. hoyi accounted for about 65% of the biomass and 70% of the energy contained in southern Lake Michigan benthic macroinvertebrates and may assimilate up to 30% of the total bioavailable organic detritus settling into the offshore hypolimnion. Calculation of the predation loss rate (production rate minus nonpredatory death rate) of P. hoyi indicated that about 13 000 cal∙m−2 (2.1 g AFDW∙m−2) of this amphipod may be consumed annually by fish and other predators in southern Lake Michigan.

Variation in Size and Lipid Content of Adult Southern Pine Beetles, Dendroctonus frontalis Zimmermann (Coleoptera: Scolytidae) in Relation to Season

1994 ◽  
Vol 29 (4) ◽  
pp. 570-579 ◽  
Author(s):  
B. R. Coppedge ◽  
F. M. Stephen ◽  
G. W. Felton
Keyword(s):  
Total Lipid ◽  
Lipid Content ◽  
Total Lipid Content ◽  
Dry Weight ◽  
Dendroctonus Frontalis ◽  
Seasonal Patterns ◽  
Southern Pine ◽  
Southern Pine Beetles ◽  
Pine Beetles ◽  
Tree Characteristics

Variations in size, weight, and lipid content of brood adult southern pine beetles, Dendroctonus frontalis Zimmermann, were investigated using a spectrophotometric technique to determine total lipid content of individual beetles. Large seasonal variations in these parameters were found with significant differences occurring between months and years. Patterns of variation, however, were not consistent with those reported in previous studies, leading to the conclusion that these variations do not have regular seasonal patterns. Variations in beetle measurements were not related to tree characteristics. Female beetles, on average, were heavier and contained more lipid than male beetles. The spectrophotometric technique used improves on a similar technique recently reported. The technique allowed more extensive measurements, including total lipid content, dry weight, and percent lipid content, to be taken on individual beetles.

Methods of estimating total lipid content in the redhead duck (Aythya americana) and an evaluation of condition indices

1979 ◽  
Vol 57 (9) ◽  
pp. 1830-1833 ◽  
Author(s):  
Robert O. Bailey
Keyword(s):  
Total Lipid ◽  
Lipid Content ◽  
Total Lipid Content ◽  
Abdominal Fat ◽  
Carcass Weight ◽  
Aythya Americana ◽  
Total Body ◽  
Condition Indices ◽  
Fat Depot ◽  
The Relationship

Methods of estimating total lipid content in the redhead duck (Aythya americana) without performing time-consuming ether extractions are presented. The relationship between various condition indices and total lipid content was investigated. Weights of the whole skin and the abdominal fat depot were easily obtained, good predictors of total body lipids. Total length was the best predictor of fat-free carcass weight.

scholarly journals Lipid and fatty acid profile of liver in relation to reproduction in the small-scaled terapon Terapon puta (Cuvier, 1829) from Pondicherry Coast, India

2018 ◽  
Vol 65 ◽  
Author(s):  
R. Nandikeswari ◽  
M. Sambasivam
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Polyunsaturated Fatty Acid ◽  
Total Lipid ◽  
Lipid Content ◽  
Saturated Fatty Acids ◽  
Total Lipid Content ◽  
Dry Weight ◽  
Monounsaturated Fatty Acids

<p>The total lipid content as percentage of dry weight of liver of <em>Terapon puta</em> (Cuvier, 1829) varied at four different stages <em>viz.,</em> immature, maturing, mature and spent stages of reproduction. Highest levels of saturated fatty acids (SFA) was recorded in the liver of mature fishes (50.71%) followed by maturing (48.03%) and the lowest in immature fishes (38.91%). Highest levels of monounsaturated fatty acids (MUFA) were observed in the liver of maturing fishes (37.07%) followed by mature (34.09%) and the lowest levels in immature fishes (30.48%). Maturing fishes had higher liver polyunsaturated fatty acid  levels (PUFA) (13.54%), compared to immature (10.55%) and mature fishes (10.17%).</p>

Aspergillus flavusgrowth and aflatoxin production as influenced by total lipid content during growth and development of cottonseed

2017 ◽  
Vol 31 (1) ◽  
pp. 91-99 ◽  
Author(s):  
Kanniah Rajasekaran ◽  
Greg Ford ◽  
Kandan Sethumadhavan ◽  
Carol Carter-Wientjes ◽  
John Bland ◽  
...  
Keyword(s):  
Total Lipid ◽  
Lipid Content ◽  
Growth And Development ◽  
Total Lipid Content ◽  
Aflatoxin Production

Comparison of biomass production and total lipid content of freshwater green microalgae cultivated under various culture conditions

2013 ◽  
Vol 37 (2) ◽  
pp. 99-106 ◽  
Author(s):  
Geun Ho Gim ◽  
Jung Kon Kim ◽  
Hyeon Seok Kim ◽  
Mathur Nadarajan Kathiravan ◽  
Hetong Yang ◽  
...  
Keyword(s):  
Biomass Production ◽  
Total Lipid ◽  
Lipid Content ◽  
Total Lipid Content ◽  
Culture Conditions ◽  
Green Microalgae

scholarly journals Adipophilin and Perilipin 3 Correlate with Total Lipid Content in Human Breast Milk

2018 ◽  
Author(s):  
Tereza Pavlova ◽  
Zdenek Spacil ◽  
Veronika Vidova ◽  
Filip Zlamal ◽  
Eliska Cechova ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Breast Milk ◽  
Total Lipid ◽  
Lipid Content ◽  
Gravimetric Method ◽  
Total Lipid Content ◽  
Milk Lipid ◽  
Human Breast Milk ◽  
Human Breast

Objective: Lipids are secreted into milk as bilayer-coated structures: milk lipid globules (MLGs). Adipophilin (ADRP) and perilipin 3 (TIP47) are associated with MLGs in human breast milk; however, the role of these proteins in milk lipid secretion is not fully understood. The aim of the study was to investigate levels of ADRP, TIP47 and total lipid content in human breast milk, their mutual correlations and dynamics during lactation. Research Methods &amp; Procedures: Milk samples from 22 healthy lactating women (Caucasian, Central European) were collected at five time points during lactation (1&ndash;3, 12&ndash;14, 29&ndash;30, 88&ndash;90 and 178&ndash;180 days postpartum). Mass spectrometry-based method was used for quantification of ADRP and TIP47 in the samples. The gravimetric method was used to determine milk total lipid content. Results: We observed distinctive trends in ADRP, TIP47 levels and lipid content in human breast milk during the first 6 months of lactation. We also found a significant association between lipid content and ADRP, lipid content and TIP47, and ADRP and TIP47 concentrations in breast milk at all sampling points. Moreover, we derived an equation for estimating the mean lipid content of milk based on ADRP concentration in human breast milk. Conclusions: A mass spectrometry-based method was developed for quantifying ADRP and TIP47 in human breast milk. Strong mutual correlations were found between ADRP, TIP47 and total lipid content in human breast milk.

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