23 Result(s)
within
Daniel I. Rubenstein
-
Article
Open AccessNew estimates indicate that males are not larger than females in most mammal species
Sexual size dimorphism has motivated a large body of research on mammalian mating strategies and sexual selection. Despite some contrary evidence, the narrative that larger males are the norm in mammals—upheld...
-
Article
Open AccessAuthor Correction: Zebras of all stripes repel biting flies at close range
-
Chapter
How Equids Cope with Macroparasites
In this chapter, we review exposure risk dynamics and co** mechanisms that equids employ against macroparasites, with a focus on gastrointestinal nematodes. As bulk-feeding grazers, equids are particularly e...
-
Chapter
Equids and Predators
It is often assumed that because predators typically consume large numbers of prey, they automatically control prey population sizes and help shape the evolution of their prey’s distinctive traits. Examining t...
-
Article
Open AccessZebras of all stripes repel biting flies at close range
The best-supported hypothesis for why zebras have stripes is that stripes repel biting flies. While this effect is well-established, the mechanism behind it remains elusive. Myriad hypotheses have been suggested,...
-
Article
Individual identification and photographic techniques in mammalian ecological and behavioural research—Part 1: Methods and concepts
-
Article
A new classification of mammalian uni-male multi-female groups based on the fundamental principles governing inter- and intrasexual relationships
Polygyny is the most common mating system in mammals, and many species form uni-male multi-female groups (UM-MF units). Polygynous systems are traditionally distinguished according to male reproductive strateg...
-
Article
Moving through the mosaic: identifying critical linkage zones for large herbivores across a multiple‐use African landscape
Reduced connectivity across grassland ecosystems can impair their functional heterogeneity and negatively impact large herbivore populations. Maintaining landscape connectivity across human-dominated rangeland...
-
Article
Landscape sustainability science in the drylands: mobility, rangelands and livelihoods
The global drylands cover 41% of the terrestrial surface and support millions of pastoralists and host diverse flora and fauna. Ongoing socioeconomic and environmental transformations in drylands make it imper...
-
Article
Open AccessPastoralist societies in flux: A conceptual framework analysis of herding and land use among the Mukugodo Maasai of Kenya
Pastoral livelihoods are evolving rapidly. The emergence of globalized markets and the integration of globalized production in develo** countries have forced many pastoralists, along with the rest of the wor...
-
Article
Open AccessEffects of holistic grazing management on milk production, weight gain, and visitation to grazing areas by livestock and wildlife in Laikipia County, Kenya
Grazing is an important management tool for maintaining healthy ecosystems and improving rangelands productivity. However, its effectiveness for this purpose is dependent on timing and frequency of grazing, as...
-
Article
Between-gender differences in vigilance do not necessarily lead to differences in foraging-vigilance tradeoffs
When prey are time limited in their access to food, any trade-off involving time should ultimately affect their intake rate. In many herbivores, males and females experience different ecological pressures affe...
-
Article
Reciprocal insurance among Kenyan pastoralists
In large areas of low and locally variable rainfall in East Africa, pastoralism is the only viable activity, and cattle are at risk of reduced milk output and even death in dry periods. The herders were nomadi...
-
Article
Group structure in a restricted entry system is mediated by both resident and joiner preferences
The benefits of grou** behaviour may not be equally distributed across all individuals within a group, leading to conflict over group membership among established group members, and between residents and out...
-
Article
A rare fight in female plains zebra
We describe a fight between two female plains zebra (Equus burchelli). Plains zebra are ungulates with stable social groups known as harems. Female aggression rarely escalates to the level we observed. The fight ...
-
Article
Reproductive status influences group size and persistence of bonds in male plains zebra (Equus burchelli)
Animal groups arise from individuals’ choices about the number, characteristics, and identity of associates. Individuals make these choices to gain benefits from their associations. As the needs of an individu...
-
Article
Network metrics reveal differences in social organization between two fission–fusion species, Grevy’s zebra and onager
For species in which group membership frequently changes, it has been a challenge to characterize variation in individual interactions and social structure. Quantifying this variation is necessary to test hypo...
-
Article
Horse signals: The sounds and scents of fury
During contests animals typically exchange information about fighting ability. Among feral horses these signals involve olfactory or acoustical elements and each type can effectively terminate contests before ...
-
Article
Alternative reproductive tactics in the spider Meta segmentata
In the spider Meta segmentata web site quality and competitive ability determine female distributions, and ultimately male mating strategy. Large, fecund females position their webs in aggregations in high qualit...
-
Article
Tail size and female choice in the guppy (Poecilia reticulata)
Under laboratory conditions, female guppies demonstrate a clear preference for males with larger tails, and this preference translates into enhanced reproductive fitness for these males. Females also prefer ma...
