scholarly journals The development of sex differences in ring-tailed lemur feeding ecology

2014 ◽  
Vol 68 (8) ◽  
pp. 1273-1286 ◽  
Author(s):  
M. Teague O’Mara ◽  
Cathriona M. Hickey
Keyword(s):  
Sex Differences ◽  
Feeding Ecology

Sex Differences in Giraffe Feeding Ecology: Energetic and Social Constraints

Ethology ◽  
2010 ◽  
Vol 87 (1-2) ◽  
pp. 79-89 ◽  
Author(s):  
Truman P. Young ◽  
Lynne A. Isbell
Keyword(s):  
Sex Differences ◽  
Feeding Ecology ◽  
Social Constraints

Typhlocoelum cucumerinum (Digenea: Cyclocoelidae): detailed analysis of distribution in wild ducks of southern Manitoba

1979 ◽  
Vol 57 (11) ◽  
pp. 2128-2135 ◽  
Author(s):  
Marilyn E. Scott ◽  
J. Daniel McLaughlin ◽  
Manfred E. Rau
Keyword(s):  
Sex Differences ◽  
Feeding Ecology ◽  
Host Species ◽  
Negative Binomial ◽  
Intensity Of Infection ◽  
Frequency Distributions ◽  
Mean Intensity ◽  
Theoretical Frequency ◽  
New Hosts ◽  
Age And Sex

A survey of 3319 wild ducks shot on the Delta Marsh, Manitoba, in 1977 and 1978 revealed that 10.0% of Anas spp. harboured Typhlocoelum cucumerinum cymbium and 9.9% of Aythya spp. harboured Typhlocoelum cucumerinum cucumerinum. The American wigeon, Anas americana Gmelin, and the ring-necked duck, Aythya collaris (Donovan), are recorded as new hosts for T. cucumerinum. Data were analysed for differences in prevalence, abundance, and intensity of infection among host species, and for seasonal, age, and sex differences within host species. Prevalence ranged from 0.0% in gadwall to 31.4% in canvasbacks; mean intensity ranged from 1.0 in wigeon to 3.8 in canvasbacks. Theoretical frequency distributions for abundance of T. cucumerinum were constructed and compared with the data for each host species. Eight of 10 had a negative binomial distribution and 2 had a Poisson distribution. Two potential explanations for the variation in distribution of T. cucumerinum among host species were investigated: susceptibility and feeding ecology. Firstly, it was shown experimentally that gadwall, mallard, blue-winged teal, and canvasback ducklings are equally susceptible to the initial stages of infection. Secondly, there was a positive correlation between T. cucumerinum infections and occurrence of snails in the diet of the various host species.

Author response for "Sex differences in the brains of capuchin monkeys ( Sapajus [Cebus] apella )"

2020 ◽  
Author(s):  
Erin E. Hecht ◽  
Olivia T. Reilly ◽  
Marcela Benítez ◽  
Kimberley A. Phillips ◽  
Sarah Brosnan
Keyword(s):  
Sex Differences ◽  
Cebus Apella ◽  
Author Response ◽  
Capuchin Monkeys

Auditory Perception of Rhyming in Kindergarten Children

1973 ◽  
Vol 16 (3) ◽  
pp. 482-487 ◽  
Author(s):  
June D. Knafle
Keyword(s):  
Sex Differences ◽  
Auditory Perception ◽  
Kindergarten Children ◽  
Different Types ◽  
Consonant Sounds

One hundred and eighty-nine kindergarten children were given a CVCC rhyming test which included four slightly different types of auditory differentiation. They obtained a greater number of correct scores on categories that provided maximum contrasts of final consonant sounds than they did on categories that provided less than maximum contrasts of final consonant sounds. For both sexes, significant differences were found between the categories; although the sex differences were not significant, girls made more correct rhyming responses than boys on the most difficult category.

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