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Ecology and Evolutionary Biology

Selected Works

2004

Articles 1 - 12 of 12

Full-Text Articles in Life Sciences

Comments On Eusopondis And Proctoporus (Squamata: Gymnophthalmidae) From Peru, With The Description Of Three New Species And A Key To The Peruvian Species, Edgar Lehr, Gunther Kohler Nov 2004

Comments On Eusopondis And Proctoporus (Squamata: Gymnophthalmidae) From Peru, With The Description Of Three New Species And A Key To The Peruvian Species, Edgar Lehr, Gunther Kohler

Edgar Lehr

We describe two new species of Proctoporus and a new species of Euspondylus (all from central Peru, Departamento de Huanuco, 2545 to 3010 m elevation). The new species are distinguished from all species presently assigned to Proctoporus and Euspondylus by unique characteristics of pholidosis, morphometrics, and color pattern. A key to the Peruvian species of Proctoporus and Euspondylus is provided. The current allocation of species to Proctoporus and Euspondylus may not reflect the phylogenetic relationships of the species under consideration. Based on the available data there appears to be no evidence to justify the separation of these genera. However, because …

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Two New Species Of Marsupial Frogs (Anura: Hylidae: Gastrotheca) From The Cordillera Oriental In Central Peru, Edgar Lehr, William E. Duellman, Daniel Rodriguez, Rudolf Von May Jun 2004

Two New Species Of Marsupial Frogs (Anura: Hylidae: Gastrotheca) From The Cordillera Oriental In Central Peru, Edgar Lehr, William E. Duellman, Daniel Rodriguez, Rudolf Von May

Edgar Lehr

A distinctive new species of Gastrotheca from the Rio Chanchamayo Valley in the Cordillera Oriental in Peru is the only known member of the genus that lacks a tympanum. Another new species from the Cordillera de Carpish is distinctive in having a pair of lateral brood pouches and only basal webbing on the foot.

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A Striking New Species Of The Eleutherodactylus From Andean Peru (Anura: Leptodactylidae), Edgar Lehr, Cesar Aguilar, William Duellman May 2004

A Striking New Species Of The Eleutherodactylus From Andean Peru (Anura: Leptodactylidae), Edgar Lehr, Cesar Aguilar, William Duellman

Edgar Lehr

No abstract provided.

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Speciation In The Central American Seaway: The Importance Of Taxon Sampling In The Identification Of Trans-Isthmian Geminate Pairs, Matthew T. Craig, Philip A. Hastings, Daniel J. Pondella Ii May 2004

Speciation In The Central American Seaway: The Importance Of Taxon Sampling In The Identification Of Trans-Isthmian Geminate Pairs, Matthew T. Craig, Philip A. Hastings, Daniel J. Pondella Ii

Daniel Pondella

Aim  To create a molecular phylogenetic hypothesis for the closely related serranid genera Alphestes Bloch and Schneider and Dermatolepis Gill and assess the role of the Panamanian Isthmus in speciation within these reef fishes. Location  Tropical eastern Pacific, Caribbean, and Indian Oceans. Methods  Sequence data from one nuclear (TMO-4C4) and three mitochondrial genes (16S, 12S, and cytochrome b) were used in maximum parsimony and maximum likelihood analyses. Results  Here we show that previously hypothesized trans-isthmian geminate species are not each other's closest living relatives. Species of Alphestes Bloch and Schneider in the eastern Pacific are sister taxa indicating post-closure speciation. …

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Food Based Approaches For A Healthy Nutrition In Africa, Mamoudou Hama Dicko May 2004

Food Based Approaches For A Healthy Nutrition In Africa, Mamoudou Hama Dicko

Pr. Mamoudou H. DICKO, PhD

The latest estimates of the FAO demonstrate the problems of the fight against hunger. These problems are manifested by the ever-increasing number of chronically undernourished people worldwide. Their numbers during the 1999-2001 period were estimated at about 840 million of which 798 million live in developing countries. Sub-Saharan Africa alone represented 198 million of those. In this part of Africa the prevalence of undernourishment ranges from 5-34%, causing growth retardation and insufficient weight gain among one third of the children under five years of age and resulting in a mortality of 5-15% among these children. Malnutrition resulting from undernourishment is …

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New Species Of Drymoluber (Reptilia: Squamata: Colubridae) From Southeastern Peru, Edgar Lehr, Nelly Carrillo, Peter Hocking Feb 2004

New Species Of Drymoluber (Reptilia: Squamata: Colubridae) From Southeastern Peru, Edgar Lehr, Nelly Carrillo, Peter Hocking

Edgar Lehr

A new species of colubrid snake, genus Drymoluber, is described from three localities (1920-3300 m elevation) in southeastern Peru (Departamento de Apurimac), The characteristics of the new species include dorsal scales smooth with two apical pits, in 13 rows throughout body; 14-16 maxillary teeth; one preocular; two postoculars; One anterior and two posterior temporals; anal plate entire; ventrals 158-182; subcaudals 82-92; and a dorsal pattern of transverse blackish blotches (1,0-1,5 scales wide) and narrower hazelnut brown interspaces (2.0-2.5 scales wide) in juveniles, whereas adults are dorsally uniform olive-grey and ventrally yeUowish-grey. The new species differs from all species of the …

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A New Species Of Phyllonastes From Peru (Amphibia, Anura, Leptodactylidae), Edgar Lehr, Cesar Aguilar, Mikael Lundberg Dec 2003

A New Species Of Phyllonastes From Peru (Amphibia, Anura, Leptodactylidae), Edgar Lehr, Cesar Aguilar, Mikael Lundberg

Edgar Lehr

A new Andean species of Phyllonastes is described from east-central Peru (Departamento de Pasco, 2900 m elevation), The new species differs from all known Phyllonastes by lacking discs with circumferential groove on the toes, inguinal spots, and dorsolateral shipes. The new species shares characters with members of the genus Phrynopus, which suggests possible relationships between the genera.

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Rediscovery Of Hyla Melanopleura Boulenger, 1912 (Amphibia: Anura: Hylidae), Edgar Lehr, Rudolf Von May Dec 2003

Rediscovery Of Hyla Melanopleura Boulenger, 1912 (Amphibia: Anura: Hylidae), Edgar Lehr, Rudolf Von May

Edgar Lehr

The description of Hyla melaflopleura was based on five syntypes from Huancabamba. Peru, from 925 m above sea level. Information on colouration in life and life history were unknown until the authors rediscovered this species in Huancabamba, Pe ru, a t 1780 m above sea level. Eight frogs were found at night in the vegetation next to small streams and in artificial ponds. Life colouration of H . melaflopleura at day and night and osteology of the hand are described , and measurements of morphological characters are presented. The call and tadpole of H. meiaflopleura remain unknown.

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Darwinism, Design And Complex Systems Dynamics, David Depew, Bruce Weber Dec 2003

Darwinism, Design And Complex Systems Dynamics, David Depew, Bruce Weber

David J Depew

No abstract provided.

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Ethics In A Time Of Crises, David A. Bainbridge Dec 2003

Ethics In A Time Of Crises, David A. Bainbridge

David A Bainbridge

Global crises reveal the weakness of our current ethical construct. A more inclusive ethical framework is needed to encourage and support sustainable development and management of resources and restoration of damaged ecosystems.

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Concepts Of Bacterial Biodiversity For The Age Of Genomics, Frederick M. Cohan Dec 2003

Concepts Of Bacterial Biodiversity For The Age Of Genomics, Frederick M. Cohan

Frederick M. Cohan

No abstract provided.

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Anatomy, Physiology And Psychology Of Desert Destruction, David A. Bainbridge Dec 2003

Anatomy, Physiology And Psychology Of Desert Destruction, David A. Bainbridge

David A Bainbridge

Off road vehicle damage continues to expand in the California deserts. This 2004 presentation explores the causes and possible methods for reducing destruction. Protecting and restoring the desert is not a technical problem but an economic/accounting problem.

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