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Taxomic Status Atelophryniscus Chrysophorus Mccranie, Wilson And Williams, 1989, (Anura Bufonidae) Inferred From Phylogeny, Edgar Lehr, Jennifer Pramuk
Taxomic Status Atelophryniscus Chrysophorus Mccranie, Wilson And Williams, 1989, (Anura Bufonidae) Inferred From Phylogeny, Edgar Lehr, Jennifer Pramuk
Edgar Lehr
The family Bufonidae is nearly cosmopolitan in distribution and contains 33 genera. The monotypic bufonid genus Atelophryniscus was described relatively recently from Honduras. This taxon was distinguished from Buto on the basis of its unusual gastromyzophorus tadpole. Stream-dwelling gastromyzophorus tadpoles are atypical within Bufonidae and when Atelophryniscus was described, this type of tadpole was unknown among members of the genus Buto. To investigate the phylogenetic placement of this taxon, we analyzed 83 previously published morphological characters for a sampling of Old and New World bufonids and included newly coded data. The data indicate that (1) there are no autapomorphies supporting …
Analysis Of Andes Frogs (Phrynopus, Leptodactylidae, Anura) Phylogeny Based On 12s And 16s Mitochondrial Rdna Sequences, Edgar Lehr, Guido Fritzsche, Anke Muller
Analysis Of Andes Frogs (Phrynopus, Leptodactylidae, Anura) Phylogeny Based On 12s And 16s Mitochondrial Rdna Sequences, Edgar Lehr, Guido Fritzsche, Anke Muller
Edgar Lehr
South American leptodactylid frogs of the genus Phrynopus occur in cloud-forest, páramo, subpáramo and puna habitats (1000–4400 m elevation) from Colombia to Bolivia. Currently, there are 34 described species; however, many additional species new to science have been reported from Colombia, Peru, and Bolivia. The phylogeny of the species-diverse Phrynopus is unknown and the position of the genus within Leptodactylidae is poorly understood. We present the results of a phylogenetic study based on 12S and 16S mitochondrial rDNA. Fifteen species of Phrynopus from Bolivia to Ecuador are included, along with several other genera of Leptodactylidae and representatives of other frog …
A New Species Of Bufo (Anura Bufonidae) From Andean Peru, Edgar Lehr, Jennifer Pramuk, Mikael Lundberg
A New Species Of Bufo (Anura Bufonidae) From Andean Peru, Edgar Lehr, Jennifer Pramuk, Mikael Lundberg
Edgar Lehr
A new species of Bufo tentatively assigned to the Bulo veraguensis group is described from forests near Paucartambo de Pasco, Peru, at elevations of 2600-3000 m in the Cordillera Oriental of central Peru. The new species differs from all known bufonids by having numerous large glands with many keratinous tips on the dorsum, large glands on the tibia and forearm, and two large dorsal glands lying between the parotoids. The new species is most similar to Bufa chavin. Both species are compared to each other and B. veraguensis with respect to external characters and skull osteology. The tadpole and call …
Barriers And Flow As Limiting Factors In The Spread Of An Invasive Crayfish (Procambarus Clarkii) In Southern California Streams, Jacob Kerby, Seth Riley, Lee Kats, Paul Wilson
Barriers And Flow As Limiting Factors In The Spread Of An Invasive Crayfish (Procambarus Clarkii) In Southern California Streams, Jacob Kerby, Seth Riley, Lee Kats, Paul Wilson
Lee Kats
Invasive crayfish are a major threat to stream ecosystems, yet research has seldom identified successful ways of preventing their spread. Thirty-two stream sections were surveyed during 2000 and 2001 in the Santa Monica Mountains of southern California to determine the distribution of the invasive crayfish Procambarus clarkii. Streams with large barriers (waterfalls, culverts) often did not have crayfish present upstream of barriers. A mark-recapture study indicated that P. clarkii moved both up and downstream between pools, but that barriers significantly reduced movement between pools. Seasonal high flow velocities likely increase passive movement downstream and reduce movement upstream. Results indicate that …
Three New Species Of Phyrnopus From Central Peru (Amphibia Anura: Leptodactylidae), Edgar Lehr, Mikael Lundberg, Cesar Aguilar
Three New Species Of Phyrnopus From Central Peru (Amphibia Anura: Leptodactylidae), Edgar Lehr, Mikael Lundberg, Cesar Aguilar
Edgar Lehr
Three new species of Phrynopus (Anura: Leptodactylidae) are described from cloud forest and puna habitats in central Peruvian Departamento de Pasco between 3600 and 4390 m elevation, the latter is the highest known elevation of the genus. The new species have first finger shorter than second, vomerine teeth absent, and tympanic membrane and tympanic annulus absent, but differ in snout-vent length, skin texture, and coloration. Currently 37 species of Phrynopus are described, 26 (70.3%) of which are endemic to Peru.
A New Species Of The Eleutherodactylus Nigrovittatus Group (Anura: Leptodactylidae) From Andean Peru, Edgar Lehr
A New Species Of The Eleutherodactylus Nigrovittatus Group (Anura: Leptodactylidae) From Andean Peru, Edgar Lehr
Edgar Lehr
No abstract provided.
The Atlas Mountains, Not The Strait Of Gibraltar, As A Biogeographic Barrier For Mauremys Leprosa (Reptilia: Testudines), Edgar Lehr, Uwe Fritz, Guido Fritzsch, Jean-Marc Ducotterd, Anke Muller
The Atlas Mountains, Not The Strait Of Gibraltar, As A Biogeographic Barrier For Mauremys Leprosa (Reptilia: Testudines), Edgar Lehr, Uwe Fritz, Guido Fritzsch, Jean-Marc Ducotterd, Anke Muller
Edgar Lehr
Sequence data of the mitochondrial cytochrome b gene of stripe-necked terrapins (Mauremys leprosa) have been compared from localities north and south of the Atlas Mts . (Ceuta; Morocco) and from Donana National Park (Spain). A low maximum sequence divergence (approximately I %) corresponds to two major clades; one is re presented by localities to the north of the Atlas Mts. and in Dofiana National Park and the other by localities to the south of the Atlas Mts. Differentiation between populations north and south of the Atlas Mts. is much more pronounced than that found between samples from each side of …
Resurrection Of The Stenocercus Torquatus Boulenger, A Spiny-Tailed Iguanid Lizard (Squamata: Iguania) From Peru, Edgar Lehr, Mikael Lundberg, Omar Torres-Carvajal
Resurrection Of The Stenocercus Torquatus Boulenger, A Spiny-Tailed Iguanid Lizard (Squamata: Iguania) From Peru, Edgar Lehr, Mikael Lundberg, Omar Torres-Carvajal
Edgar Lehr
We resurrect and redescribe Stenocercus torquatus from the Andes of central Peru in departamentos JUnln and Pasco at elevations between 800 and 1800 m. This species was erroneously synonymized with Stenocercus crassicaudatus, which occurs allopatrically in the Andes of southeastern Peru, departamento Cusco. In addition to several scale counts, Stenocercus torquatus differs from S. crassicaudatus in having a black antehumeral collar, two black transverse bands anterior to the antehumeral collar, a shorter tail, the ability to change color, and an arboreal life-style.
Effects Of Urbanization On The Distribution And Abundance Of Amphibians And Invasive Species In Southern California Streams, Seth Riley, Gary Busteed, Lee Kats, Thomas Vandergon, Lena Lee, Rosi Dagit, Jacob Kerby, Robert Fisher, Raymond Sauvajot
Effects Of Urbanization On The Distribution And Abundance Of Amphibians And Invasive Species In Southern California Streams, Seth Riley, Gary Busteed, Lee Kats, Thomas Vandergon, Lena Lee, Rosi Dagit, Jacob Kerby, Robert Fisher, Raymond Sauvajot
Lee Kats
Urbanization negatively affects natural ecosystems in many ways, and aquatic systems in particular. Urbanization is also cited as one of the potential contributors to recent dramatic declines in amphibian populations. From 2000 to 2002 we determined the distribution and abundance of native amphibians and ex- otic predators and characterized stream habitat and invertebrate communities in 35 streams in an urbanized landscape north of Los Angeles (U.S.A.). We measured watershed development as the percentage of area within each watershed occupied by urban land uses. Streams in more developed watersheds often had exotic crayfish ( Procambarus clarkii) and fish, and had fewer …