Christopher X J. Jensen
Professor, Pratt Institute

If sloths endure costs to maintain closed-loop agricultural systems, why can’t we?

Posted 05 Feb 2014 / 0

The New York Times “The Sloth’s Busy Inner Life” This is a great story about how paradoxical behaviors can be understood through appreciating mutualisms. If you don’t understand the benefits of algae to sloths and sloths to algae,  you can’t understand this behavior. But you also need to understand how sloths directly benefit moths and how Read More

A Minor Post, Adaptation, Articles, Behavior, Behavioral Ecology, Closed Loop Systems, Coevolution, Community Ecology, Composting, Mutualism, Predation, Quantifying Costs and Benefits, Tropical Forest

Caterpillars weaponize nicotine

Posted 02 Jan 2014 / 0

The Economist “Caterpillars that blow nicotine at their enemy” I love the combination of genetic manipulation and “arena of death” wolf-spider gauntlet that led to these findings.

A Minor Post, Adaptation, Articles, Behavior, Behavioral Ecology, Host-Pathogen Evolution, Interactions, Parasitism, Predation, Resistance Evolution in Parasites

New research suggests that chimpanzees understand that cooperation produces benefits

Posted 11 Oct 2013 / 0

WMAC Northeast Public Radio “Academic Minute: Dr. Alicia Melis, University of Warwick – Cooperation and Chimpanzees” Chimps’ ability to take the perspective of others has been questioned, but this set of experiments seems to show that chimps can mentally put themselves in the place of a comrade, imagining what that comrade should do and then Read More

A Minor Post, Behavioral Ecology, Cooperation, Human Uniqueness, Primates, Radio & Podcasts, Reciprocity, Web

Should we emulate the cooperative and conservative habits of the sloth?

Posted 19 Sep 2013 / 0

Inhabitat “The Biomimicry Manual: What Can Sloths Teach Us About Energy Efficiency?“

A Minor Post, Adaptation, Behavior, Behavioral Ecology, Coevolution, Green Design, Mutualism, Tropical Forest, Web

Cooperative child-rearing pays dividends for ruffed lemurs, irrespective of kinship

Posted 23 Aug 2013 / 0

Mongabay News “The evolution of cooperation: communal nests are best for ruffed lemurs” Behavioral Ecology and Sociobiology “Communal nesting, kinship, and maternal success in a social primate” What I find particularly interesting about these findings is that they appear to show that kinship — if a factor at all — might well be a byproduct Read More

A Minor Post, Articles, Behavioral Ecology, Cooperation, Kin Selection, Mating systems, Mutualism, Reciprocity, Reproductive Fitness, Tropical Forest, Web

National Geographic “The Short Happy Life of a Serengeti Lion”

Posted 23 Aug 2013 / 0

National Geographic “The Short Happy Life of a Serengeti Lion” This article provides a great overview of the kind of work that Craig Packer’s research group does in the Serengeti to understand the social behavior of lions. There is valuable information here on why lions are social (unlike other large cats), why lions must cooperate, Read More

A Minor Post, Articles, Behavior, Behavioral Ecology, Carrying Capacity, Cooperation, Grasslands, Kin Selection, Predation, Reciprocity

Mammal monogamy still a mystery, but maybe more than a numbers game

Posted 30 Jul 2013 / 0

National Public Radio Morning Edition “For Some Mammals It’s One Love, But Reasons Still Unclear” Although brief, I appreciate how this article lays out the three hypotheses for monogamy: Monogamous co-parenting increases the survival rate of offspring as compared to parenting by the mother alone; Monogamy results from the pattern of resource distribution: if resources are Read More

A Minor Post, Behavior, Behavioral Ecology, Competition, Cooperation, Evolution, Genetics, Human Uniqueness, Mating systems, Radio & Podcasts, Sex and Reproduction

Isabella Rossellini’s Green Porno

Posted 21 Jul 2013 / 0

I have been preparing for next semester’s Evolution of Sex course by looking for new media that might help my students. I just spent a few enjoyable hours checking out Isabella Rossellini’s Green Porno series, produced by the Sundance Channel. I have been aware of Rossellini’s rather interesting foray into the world of animal sex and reproduction for awhile Read More

A Major Post, Adaptation, Behavior, Behavioral Ecology, Biodiversity Loss, Ecology, Film, Television, & Video, Marine Ecosystems, MSCI-362, The Evolution of Sex, Parasitism, Predation

Working on a VUE concept map of the fieldTest simulation

Posted 22 Jun 2013 / 0

Jennifer Verdolin, Dylan Moore, and I created the fieldTest simulator several years ago. This individual-based simulation allows virtual animals with the potential to form social groups that defend territories to interact on landscapes containing different patterns and abundances of resources, and is part of my larger research into group territorial behavior. We presented our results at the 2009 Read More

A Major Post, Behavioral Ecology, Competition, Concept Mapping, Department of Mathematics & Science, Ecological Modeling, Group Territorial Behavior, Individual-based Models, Information Design, Spatially Explicit Modeling

Chimpanzees, our closest relatives, cannot triangulate punishment

Posted 20 Sep 2012 / 0

Proceedings of the National Academy of Sciences “No third-party punishment in chimpanzees” This is pretty astonishing, but perhaps not entirely surprising. As numerous other studies have shown, there are many qualitative differences in the cognition and resulting behaviors of humans and chimpanzees. Whether the fact that chimps do not maintain a sense of ‘social justice’ Read More

A Minor Post, Articles, Behavior, Behavioral Ecology, Cooperation, Human Evolution, Human Uniqueness, Primates, Psychology, Punishment