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Differences in the fatty-acid composition of rodent spermatozoa are associated to levels of sperm competition.

delBarco-Trillo J, Mateo R, Roldan ER - Biol Open (2015)

Bottom Line: To test these predictions, we quantified the fatty-acid composition of sperm, testis and liver cells in four mouse species (genus Mus) that differ in their levels of sperm competition.Fatty-acid composition in testis and liver cells was not associated to sperm competition levels.Two particular fatty acids were most responsible for this pattern (arachidonic acid and palmitic acid).

View Article: PubMed Central - PubMed

Affiliation: Reproductive Ecology and Biology Group, Museo Nacional de Ciencias Naturales, CSIC, 28006 Madrid, Spain Present address: School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool L3 5UA, UK. delbarcotrillo@gmail.com.

No MeSH data available.


Related in: MedlinePlus

Percentage of the most abundant polyunsaturated fatty acids in sperm cells.The four polyunsaturated fatty acids that compose more than 5% of the fatty acids in sperm cells are represented. The modified boxplots present the following information: the bar within each box represents the sample median, each box represents 50% of the data around the median, and the two whiskers around each box represent the 95% confidence interval (n = 5 for each species, except n = 4 in the case of sperm data for M. spretus); circles represent outliers.
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f04: Percentage of the most abundant polyunsaturated fatty acids in sperm cells.The four polyunsaturated fatty acids that compose more than 5% of the fatty acids in sperm cells are represented. The modified boxplots present the following information: the bar within each box represents the sample median, each box represents 50% of the data around the median, and the two whiskers around each box represent the 95% confidence interval (n = 5 for each species, except n = 4 in the case of sperm data for M. spretus); circles represent outliers.

Mentions: There were four PUFAs that represented more than 5% of all fatty acids in sperm cells: 18:2n−6, 20:4n−6, 22:5n−6 and 22:6n−3. The percentage of two of these fatty acids (18:2n−6 and 22:6n−3) did not differ among species (18:2n−6: F3,15 = 1.39, p = 0.28; and 22:6n−3: F3,15 = 1.99, p = 0.16; Fig. 4). The abundance of 22:5n−6 differed among species (F3,15 = 4.78, p = 0.02) but the only pairwise comparison that was statistically significant was that between M. pahari and M. spretus (p = 0.02); in any case the differences observed did not match the pattern of RTS among these species. On the other hand, the abundance of 20:4n−6 differed among species (F3,15 = 44.11, p<0.0001; Fig. 4) and, in this case, such differences matched the differences among the four species in their RTS. All pairwise comparisons were significant (p<0.05) except that between M. spretus and M. spicilegus (p = 0.99), indicating that higher RTS is associated with a decrease in the abundance of 20:4n−6.


Differences in the fatty-acid composition of rodent spermatozoa are associated to levels of sperm competition.

delBarco-Trillo J, Mateo R, Roldan ER - Biol Open (2015)

Percentage of the most abundant polyunsaturated fatty acids in sperm cells.The four polyunsaturated fatty acids that compose more than 5% of the fatty acids in sperm cells are represented. The modified boxplots present the following information: the bar within each box represents the sample median, each box represents 50% of the data around the median, and the two whiskers around each box represent the 95% confidence interval (n = 5 for each species, except n = 4 in the case of sperm data for M. spretus); circles represent outliers.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4400589&req=5

f04: Percentage of the most abundant polyunsaturated fatty acids in sperm cells.The four polyunsaturated fatty acids that compose more than 5% of the fatty acids in sperm cells are represented. The modified boxplots present the following information: the bar within each box represents the sample median, each box represents 50% of the data around the median, and the two whiskers around each box represent the 95% confidence interval (n = 5 for each species, except n = 4 in the case of sperm data for M. spretus); circles represent outliers.
Mentions: There were four PUFAs that represented more than 5% of all fatty acids in sperm cells: 18:2n−6, 20:4n−6, 22:5n−6 and 22:6n−3. The percentage of two of these fatty acids (18:2n−6 and 22:6n−3) did not differ among species (18:2n−6: F3,15 = 1.39, p = 0.28; and 22:6n−3: F3,15 = 1.99, p = 0.16; Fig. 4). The abundance of 22:5n−6 differed among species (F3,15 = 4.78, p = 0.02) but the only pairwise comparison that was statistically significant was that between M. pahari and M. spretus (p = 0.02); in any case the differences observed did not match the pattern of RTS among these species. On the other hand, the abundance of 20:4n−6 differed among species (F3,15 = 44.11, p<0.0001; Fig. 4) and, in this case, such differences matched the differences among the four species in their RTS. All pairwise comparisons were significant (p<0.05) except that between M. spretus and M. spicilegus (p = 0.99), indicating that higher RTS is associated with a decrease in the abundance of 20:4n−6.

Bottom Line: To test these predictions, we quantified the fatty-acid composition of sperm, testis and liver cells in four mouse species (genus Mus) that differ in their levels of sperm competition.Fatty-acid composition in testis and liver cells was not associated to sperm competition levels.Two particular fatty acids were most responsible for this pattern (arachidonic acid and palmitic acid).

View Article: PubMed Central - PubMed

Affiliation: Reproductive Ecology and Biology Group, Museo Nacional de Ciencias Naturales, CSIC, 28006 Madrid, Spain Present address: School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool L3 5UA, UK. delbarcotrillo@gmail.com.

No MeSH data available.


Related in: MedlinePlus