Edward E Louis
Biographic Data
| ID | 93388 |
|---|---|
| NAME | Edward E Louis |
| GIVEN NAMES | Edward E |
| FAMILY NAME | Louis |
| SIGNATURE | LOUIS E E |
| AFFILIATIONS | Centre for Conservation and Research |
| ORCID | 0000-0002-3634-4943 |
| VERIFIED | Yes |
| TOTAL WORKS | 27 |
| TOTAL CITATIONS | 97 |
| AUTHOR COUNT | 27 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2004 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 6 |
Reproductive Seasonality but not Food Availability Affects Agonism Rates in Black-and-White Ruffed Lemurs (Varecia variegata)
Losing lemurs: Declining populations and land cover changes over space and time
Forest loss and degradation due to land cover changes imperil biodiversity worldwide. Subtropical and tropical ecosystems experience high deforestation rates, negatively affecting species like primates. Madagascar's endemic lemurs face exceptionally high risks of population declines and extirpation. We examined how short‐term land cover changes within a fragmented landscape in southeastern Madagascar impacted the density of lemur species. Using l…
Dietary flexibility of the greater bamboo lemur ( Prolemur simus ), a specialized feeder, in eastern Madagascar
The degree of dietary flexibility in primates is species specific; some incorporate a wider array of resources than others. Extreme interannual weather variability in Madagascar results in seasonal resource scarcity which has been linked to specialized behaviors in lemurs. Prolemur simus , for example, has been considered an obligate specialist on large culm bamboo with >60% of its diet composed of woody bamboos requiring morphological and physio…
Flextime: Black-and-White Ruffed Lemurs (Varecia variegata) use Opposing Strategies to Counter Resource Scarcity in Fragmented Habitats
A National-Level Assessment of Lemur Hunting Pressure in Madagascar
Lemur paparazzi: Arboreal camera trapping and occupancy modeling as conservation tools for monitoring threatened lemur species
Primate species face growing risks of extinction throughout the world. To better protect their populations, effective monitoring techniques are needed. The goal of this study was to evaluate the use of arboreal camera traps and occupancy modeling as conservation tools for threatened lemur species. This project aimed to (1) estimate the occupancy and detection probabilities of lemur species, (2) investigate factors potentially affecting lemur habi…
Locomotion of an adult female and juvenile male aye‐aye ( Daubentonia madagascariensis ) in Torotorofotsy, Madagascar
Aye‐ayes ( Daubentonia madagascariensis ) locate and acquire invertebrates from within woody substrates at all levels of the rainforest; yet how their locomotion helps them accommodate this diet has not been explored in detail. We studied the locomotor behavior of an adult female ( N = 1,085) and juvenile male ( N = 708) aye‐aye in the undisturbed forest of Torotorofotsy, Madagascar from May to December 2017. We used bout sampling to record locom…
The influence of seasonality, anthropogenic disturbances, and cyclonic activity on the behavior of northern sportive lemurs ( Lepilemur septentrionalis ) at Montagne des Français, Madagascar
Anthropogenic tropical deforestation and degradation imminently threaten primates today. Primates living in these disturbed habitats may also be subjected to increasingly severe tropical storms such as cyclones or hurricanes. These disturbances pose an immediate risk to their livelihood and can dramatically alter their habitats, in turn potentially shifting behavioral patterns. We had the unique opportunity to study the effects of seasonality, an…
Developmental Timeline of Wild Aye-Aye (Daubentonia madagascariensis) Infants in Kianjavato and Torotorofotsy, Madagascar
Re‐assessing the applicability of the Jarman/Bell model and Kay's threshold to the insectivorous aye‐aye ( Daubentonia madagascariensis )
OBJECTIVES: Jarman/Bell principle and Kay's threshold suggest that large animals should not be able to sustain themselves on insects. However, animals with specialized morphological and/or behavioral adaptations violate these assumptions. Male aye-ayes were recently identified as having an insectivorous diet despite weighing 2.5 kg. We further explored this diet/body size disparity by studying behaviors of an adult female and juvenile male aye-ay…
Comparing the use of live trees and deadwood for larval foraging by aye-ayes (Daubentonia madagascariensis) at Kianjavato and Torotorofotsy, Madagascar
Primate genotyping via high resolution melt analysis: Rapid and reliable identification of color vision status in wild lemurs
Genetic Analysis of the Indri Reveals No Evidence of Distinct Subspecies
Deadwood Structural Properties May Influence Aye-Aye (Daubentonia madagascariensis) Extractive Foraging Behavior
Comparative and population mitogenomic analyses of Madagascar's extinct, giant 'subfossil' lemurs
Averting Lemur Extinctions amid Madagascar's Political Crisis
Community-based management, ecotourism, and researchers' presence are proposed to prevent lemur extinctions.
Defining species in an advanced technological landscape
The answer to the proffered question, "What is a species?" is considered one of the fundamental issues of biological science, as well as one of the most polarizing and sometimes acrimonious problems. Dozens of species concepts have been defined, but none are universal for implementation across all taxa. Within the past thirty years, the ability to analyze DNA data has progressed to the point that multiple methodologies can be simultaneously appli…
Opsin Genes and Visual Ecology in a Nocturnal Folivorous Lemur
Females are the ecological sex: Sex‐specific body mass ecogeography in wild sifaka populations ( Propithecus spp.)
Previous work in primates has shown that body size often covaries with ecological parameters related to resource or energy availability in the environment. This relationship may differ for males and females as access to resources has greater importance for reproductive success in females. We test the hypotheses that (1) female body mass may be more tightly constrained than male body mass by ecological variables, and (2) female body mass may respo…
Morphological characterization of a brown lemur hybrid zone ( Eulemur rufifrons × E. cinereiceps )
Hybridization has recently been identified as a pervasive force in the evolution of primates. In this study, we characterized a hybrid zone between two species of brown lemur ( Eulemur rufifrons and E. cinereiceps ) in the Andringitra region of southeastern Madagascar using morphological traits. We immobilized animals along a north‐south transect (∼80 km), scored them for their degree of hybridity using pelage traits and measured standard morphom…
Genetic architecture of two red ruffed lemur (Varecia rubra) populations of Masoala National Park
Does Eulemur cinereiceps exist? Preliminary evidence from genetics and ground surveys in southeastern Madagascar
Although appearing in the literature as early as 1890, the brown lemur form Eulemur cinereiceps has recently resurfaced as a potentially valid taxon, distinct from neighboring, presumably closely related species such as white‐collared lemurs ( Eulemur albocollaris ). We propose two scenarios for the potential separation of E. cinereiceps and E. albocollaris : (1) coastal and interior populations represent two distinct taxa and (2) the coastal pop…
Morphometrics of wild black‐and‐white ruffed lemurs [ Varecia variegata ; Kerr, 1792]
This study presents the first detailed morphometric measurements of wild caught black‐and‐white ruffed lemurs ( Varecia variegata ) from the eastern rainforests of Madagascar and aims to quantify the morphological variation present throughout their recognized range. One hundred and forty‐four adult and juvenile individuals from 15 sites were sampled for 20 cranial, dental and postcranial morphometric and body mass measurements. Data were collecte…
Lemur Diversity in Madagascar
Revision of the Mouse Lemurs (Microcebus) of Eastern Madagascar
Lemur Diversity in Madagascar
Revision of the Mouse Lemurs (Microcebus) of Eastern Madagascar
Specific Status of Propithecus spp
Comparative and population mitogenomic analyses of Madagascar's extinct, giant 'subfossil' lemurs
A National-Level Assessment of Lemur Hunting Pressure in Madagascar
Females are the ecological sex: Sex‐specific body mass ecogeography in wild sifaka populations ( Propithecus spp.)
Previous work in primates has shown that body size often covaries with ecological parameters related to resource or energy availability in the environment. This relationship may differ for males and females as access to resources has greater importance for reproductive success in females. We test the hypotheses that (1) female body mass may be more tightly constrained than male body mass by ecological variables, and (2) female body mass may respo…
Morphological characterization of a brown lemur hybrid zone ( Eulemur rufifrons × E. cinereiceps )
Hybridization has recently been identified as a pervasive force in the evolution of primates. In this study, we characterized a hybrid zone between two species of brown lemur ( Eulemur rufifrons and E. cinereiceps ) in the Andringitra region of southeastern Madagascar using morphological traits. We immobilized animals along a north‐south transect (∼80 km), scored them for their degree of hybridity using pelage traits and measured standard morphom…
Opsin Genes and Visual Ecology in a Nocturnal Folivorous Lemur
Flextime: Black-and-White Ruffed Lemurs (Varecia variegata) use Opposing Strategies to Counter Resource Scarcity in Fragmented Habitats
Deadwood Structural Properties May Influence Aye-Aye (Daubentonia madagascariensis) Extractive Foraging Behavior
Re‐assessing the applicability of the Jarman/Bell model and Kay's threshold to the insectivorous aye‐aye ( Daubentonia madagascariensis )
OBJECTIVES: Jarman/Bell principle and Kay's threshold suggest that large animals should not be able to sustain themselves on insects. However, animals with specialized morphological and/or behavioral adaptations violate these assumptions. Male aye-ayes were recently identified as having an insectivorous diet despite weighing 2.5 kg. We further explored this diet/body size disparity by studying behaviors of an adult female and juvenile male aye-ay…
Specific Status of Propithecus spp
Preliminary biomedical evaluation of wild ruffed lemurs ( Varecia variegata and V. rubra )
Complete medical examinations were performed on 11 wild ruffed lemurs ( Varecia variegata and V. rubra ) from three sites in Madagascar. Each animal received a complete physical examination, several physiological parameters were analyzed (complete blood count, serum biochemical profile, and fecal bacterial culture), and the animals were examined for endo‐, ecto‐, and hemoparasites. Additional tests were performed as samples were available, includ…
Revision of the Mouse Lemurs (Microcebus) of Eastern Madagascar
Does Eulemur cinereiceps exist? Preliminary evidence from genetics and ground surveys in southeastern Madagascar
Although appearing in the literature as early as 1890, the brown lemur form Eulemur cinereiceps has recently resurfaced as a potentially valid taxon, distinct from neighboring, presumably closely related species such as white‐collared lemurs ( Eulemur albocollaris ). We propose two scenarios for the potential separation of E. cinereiceps and E. albocollaris : (1) coastal and interior populations represent two distinct taxa and (2) the coastal pop…
Morphometrics of wild black‐and‐white ruffed lemurs [ Varecia variegata ; Kerr, 1792]
This study presents the first detailed morphometric measurements of wild caught black‐and‐white ruffed lemurs ( Varecia variegata ) from the eastern rainforests of Madagascar and aims to quantify the morphological variation present throughout their recognized range. One hundred and forty‐four adult and juvenile individuals from 15 sites were sampled for 20 cranial, dental and postcranial morphometric and body mass measurements. Data were collecte…
Lemur Diversity in Madagascar
Genetic architecture of two red ruffed lemur (Varecia rubra) populations of Masoala National Park
Morphological characterization of a brown lemur hybrid zone ( Eulemur rufifrons × E. cinereiceps )
Hybridization has recently been identified as a pervasive force in the evolution of primates. In this study, we characterized a hybrid zone between two species of brown lemur ( Eulemur rufifrons and E. cinereiceps ) in the Andringitra region of southeastern Madagascar using morphological traits. We immobilized animals along a north‐south transect (∼80 km), scored them for their degree of hybridity using pelage traits and measured standard morphom…
Females are the ecological sex: Sex‐specific body mass ecogeography in wild sifaka populations ( Propithecus spp.)
Previous work in primates has shown that body size often covaries with ecological parameters related to resource or energy availability in the environment. This relationship may differ for males and females as access to resources has greater importance for reproductive success in females. We test the hypotheses that (1) female body mass may be more tightly constrained than male body mass by ecological variables, and (2) female body mass may respo…
Averting Lemur Extinctions amid Madagascar's Political Crisis
Community-based management, ecotourism, and researchers' presence are proposed to prevent lemur extinctions.
Defining species in an advanced technological landscape
The answer to the proffered question, "What is a species?" is considered one of the fundamental issues of biological science, as well as one of the most polarizing and sometimes acrimonious problems. Dozens of species concepts have been defined, but none are universal for implementation across all taxa. Within the past thirty years, the ability to analyze DNA data has progressed to the point that multiple methodologies can be simultaneously appli…
Opsin Genes and Visual Ecology in a Nocturnal Folivorous Lemur
Comparative and population mitogenomic analyses of Madagascar's extinct, giant 'subfossil' lemurs
Primate genotyping via high resolution melt analysis: Rapid and reliable identification of color vision status in wild lemurs
Genetic Analysis of the Indri Reveals No Evidence of Distinct Subspecies
Deadwood Structural Properties May Influence Aye-Aye (Daubentonia madagascariensis) Extractive Foraging Behavior
Comparing the use of live trees and deadwood for larval foraging by aye-ayes (Daubentonia madagascariensis) at Kianjavato and Torotorofotsy, Madagascar
Re‐assessing the applicability of the Jarman/Bell model and Kay's threshold to the insectivorous aye‐aye ( Daubentonia madagascariensis )
OBJECTIVES: Jarman/Bell principle and Kay's threshold suggest that large animals should not be able to sustain themselves on insects. However, animals with specialized morphological and/or behavioral adaptations violate these assumptions. Male aye-ayes were recently identified as having an insectivorous diet despite weighing 2.5 kg. We further explored this diet/body size disparity by studying behaviors of an adult female and juvenile male aye-ay…
Lemur paparazzi: Arboreal camera trapping and occupancy modeling as conservation tools for monitoring threatened lemur species
Primate species face growing risks of extinction throughout the world. To better protect their populations, effective monitoring techniques are needed. The goal of this study was to evaluate the use of arboreal camera traps and occupancy modeling as conservation tools for threatened lemur species. This project aimed to (1) estimate the occupancy and detection probabilities of lemur species, (2) investigate factors potentially affecting lemur habi…
Locomotion of an adult female and juvenile male aye‐aye ( Daubentonia madagascariensis ) in Torotorofotsy, Madagascar
Aye‐ayes ( Daubentonia madagascariensis ) locate and acquire invertebrates from within woody substrates at all levels of the rainforest; yet how their locomotion helps them accommodate this diet has not been explored in detail. We studied the locomotor behavior of an adult female ( N = 1,085) and juvenile male ( N = 708) aye‐aye in the undisturbed forest of Torotorofotsy, Madagascar from May to December 2017. We used bout sampling to record locom…
The influence of seasonality, anthropogenic disturbances, and cyclonic activity on the behavior of northern sportive lemurs ( Lepilemur septentrionalis ) at Montagne des Français, Madagascar
Anthropogenic tropical deforestation and degradation imminently threaten primates today. Primates living in these disturbed habitats may also be subjected to increasingly severe tropical storms such as cyclones or hurricanes. These disturbances pose an immediate risk to their livelihood and can dramatically alter their habitats, in turn potentially shifting behavioral patterns. We had the unique opportunity to study the effects of seasonality, an…
Developmental Timeline of Wild Aye-Aye (Daubentonia madagascariensis) Infants in Kianjavato and Torotorofotsy, Madagascar
A National-Level Assessment of Lemur Hunting Pressure in Madagascar
Flextime: Black-and-White Ruffed Lemurs (Varecia variegata) use Opposing Strategies to Counter Resource Scarcity in Fragmented Habitats
Dietary flexibility of the greater bamboo lemur ( Prolemur simus ), a specialized feeder, in eastern Madagascar
The degree of dietary flexibility in primates is species specific; some incorporate a wider array of resources than others. Extreme interannual weather variability in Madagascar results in seasonal resource scarcity which has been linked to specialized behaviors in lemurs. Prolemur simus , for example, has been considered an obligate specialist on large culm bamboo with >60% of its diet composed of woody bamboos requiring morphological and physio…
Biology (26 works) · Primate Behavior and Ecology (24 works) · Ecology (20 works) · Lemur (19 works) · Amphibian and Reptile Biology (15 works) · Primate (14 works) · Animal ecology (13 works) · Zoology (12 works) · Animal Behavior and Reproduction (11 works) · Ecology (10 works)