Feeding Behavior and Nutrient Intake in Spiny Forest-Dwelling Ring-Tailed Lemurs (Lemur catta) During Early Gestation and Early to Mid-Lactation Periods: Compensating in a Harsh Environment

被引:21
作者
Gould, Lisa [1 ]
Power, Michael L. [2 ]
Ellwanger, Nicholas [3 ]
Rambeloarivony, Hajamanitra [4 ]
机构
[1] Univ Victoria, Dept Anthropol, Victoria, BC V8W 3P5, Canada
[2] Smithsonian Natl Zool Pk, Nutr Lab, Washington, DC USA
[3] Univ Texas San Antonio, Dept Anthropol, San Antonio, TX USA
[4] Oxford Brookes Univ, Dept Anthropol, Oxford OX3 0BP, England
基金
加拿大自然科学与工程研究理事会;
关键词
Lemur catta; nutrition; reproductive females; spiny forest; MAHAFALY SPECIAL RESERVE; MILK-COMPOSITION; BERENTY RESERVE; MADAGASCAR; PATTERNS; EULEMUR; DIET; POPULATION; DOMINANCE; ECOLOGY;
D O I
10.1002/ajpa.21530
中图分类号
Q98 [人类学];
学科分类号
030303 ;
摘要
Strong resource seasonality in Madagascar has led to the evolution of female feeding priority and weaning synchrony in most lemur species. For these taxa, pregnancy/early lactation periods coincide with low food availability, and weaning of infants is timed with increased resources at the onset of the rainy season. Reproductive females experience high metabolic requirements, which they must accommodate, particularly when food resources are scarce. Female ring-tailed lemurs (Lemur catta) residing in spiny forest habitat must deal with resource scarcity, high temperatures (similar to 36-40 degrees C) and little shade in early to mid-lactation periods. Considered "income breeders," these females must use resources obtained from the environment instead of relying on fat stores; thus, we expected they would differ from same-sized males in time spent on feeding and in the intake of food and nutrients. We investigated these variables in two groups (N = 11 and 12) of Lemur catta residing in spiny forest habitat during early gestation and early to mid-lactation periods. Focal animal data and food plant samples were collected, and plants were analyzed for protein, kcal, and fiber. We found no sex differences for any feeding or nutrient intake variable for the top five food species consumed. Females in early gestation spent more time feeding compared with early/mid-lactation. Physiological compensation for spiny forest-dwelling females may be tied to greater time spent resting compared with gallery forest conspecifics, consuming foods high in protein, calories, and water, reduced home range defense in a sparsely populated habitat, and for Lemur catta females in general, production of relatively dilute milk compared with many strepsirrhines. Am J Phys Anthropol 145: 469-479, 2011. (C) 2011 Wiley-Liss, Inc.
引用
收藏
页码:469 / 479
页数:11
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