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Full-Text Articles in Life Sciences
Sierra Santa Rosa: An Oasis Of Bird Diversity In Arid Northern Mexico, John Mccormack, Gabriela Castañeda, Greg Levandoski
Sierra Santa Rosa: An Oasis Of Bird Diversity In Arid Northern Mexico, John Mccormack, Gabriela Castañeda, Greg Levandoski
John E. McCormack
No abstract provided.
Land Cover Classification And Economic Assessment Of Citrus Groves Using Remote Sensing, Jennifer Gebelein
Land Cover Classification And Economic Assessment Of Citrus Groves Using Remote Sensing, Jennifer Gebelein
Jennifer Gebelein
The citrus industry has the second largest impact on Florida's economy, following tourism. Estimation of citrus area coverage and annual forecasts of Florida's citrus production are currently dependent on labor-intensive interpretation of aerial photographs. Remotely sensed data from satellites has been widely applied in agricultural yield estimation and cropland management. Satellite data can potentially be obtained throughout the year, making it especially suitable for the detection of land cover change in agriculture and ...
Diversity Among New World Microhylid Frogs (Anura: Microhvlidae): Morphological And Osteological Comparisons Between Nelsonophryne (Gunther 1901) And A New Genus From Peru, Edgar Lehr, Linda Trueb
Diversity Among New World Microhylid Frogs (Anura: Microhvlidae): Morphological And Osteological Comparisons Between Nelsonophryne (Gunther 1901) And A New Genus From Peru, Edgar Lehr, Linda Trueb
Edgar Lehr
A new genus and species of microhylid frogs are described from localities at elevations of 2500-2960 m on the eastern slopes of the Andes in central Peru. These are the first microhylids recorded from the Peruvian Andes and they differ from all other neotropical microhylids by their lack of a tympanum, tympanic annulus and stapes. Phrynopus carpish is removed from Leptodactylidae and placed in Microhylidae. Several novel morphological characters for microhylids are described, among them dermal body spines, expanded nuptial pads in males and heterotopic cartilages. Osteological descriptions and comparison of the new genus with Nelsonophryne revealed a number of …
Environmental Studies: Interdisciplinary Research On Maine Lakes, Philip Nyhus, F. Cole, David Firmage, Dan Tierney, Susan Cole, Raymond Phillips, Edward Yeterian
Environmental Studies: Interdisciplinary Research On Maine Lakes, Philip Nyhus, F. Cole, David Firmage, Dan Tierney, Susan Cole, Raymond Phillips, Edward Yeterian
Susan Westerberg Cole
No abstract provided.
Evolution, Jonathan Eisen
A New Species Of The Pristimantis Orestes Group (Anura: Leptodactylidae) From The Cordillera Occidental In Northern Peru, Edgar Lehr, Gunther Kohler
A New Species Of The Pristimantis Orestes Group (Anura: Leptodactylidae) From The Cordillera Occidental In Northern Peru, Edgar Lehr, Gunther Kohler
Edgar Lehr
We describe a new species of the Pristimantis orestes Group from cloud forest at 1700- 1800 m in the Cordillera Occidental in northern Peru (Departamento de Cajamarca). The type series comprises one adult female and three males. The new species has a maximum snout vent-length of29.4 mm, a long snout, dentigerous processes ofvorners present, di scs on outer fingers broadly expanded, males that have vocal slits prescnt and nuptial pads absent, and a distinct color pattern consisting of ran blotches and spots on a brown venter, anterior and posterior surfaces afthe thighs, concealed surfaces of the shanks, and axilla and …
New Eleutherodactyline Frogs (Leptodacetylidae: Pristimantis, Phrynopus) From Peru, Edgar Lehr
New Eleutherodactyline Frogs (Leptodacetylidae: Pristimantis, Phrynopus) From Peru, Edgar Lehr
Edgar Lehr
Four new species of Pristimantis and three new species of Phrynopus are described from Peru. Two of the new species of Pristimantis are assigned to the orestes species Group, one to the conspicillatus Group, and one to the unistrigatus Group. Three of the new species of Pristimantis were obtained from the Cordillera de Vilcabamba in southern Peru, which is known for high biological diversity and endemism. One of the new species from the Vilcabamba region belongs to the orestes species Group and is separated by approximately 600 km (straightline) from proximate known species of the group (Pristimantis cordovae) in northern …
Descriptions Of The Tadpoles Of Two Neotropical Microhylid Frogs, Melanophryne Carpish And Nelsonophryne Aequatorialis (Anura: Microhylidae), Edgar Lehr, Linda Trueb, Pablo Venegas, Ernesto Arbelaez
Descriptions Of The Tadpoles Of Two Neotropical Microhylid Frogs, Melanophryne Carpish And Nelsonophryne Aequatorialis (Anura: Microhylidae), Edgar Lehr, Linda Trueb, Pablo Venegas, Ernesto Arbelaez
Edgar Lehr
The tadpole of Melanophryne carpish is described based on two specimens found in an arboreal, water-filled bromeliad in humid montane forest at 2,870 m in the eastern Andes of northern Peru (Departamento de San Martı´n). It differs from all known New World microhylid tadpoles in having unpigmented, keratinized, jaw sheaths. The lower labium is expanded and platelike. The body is depressed with eyes located dorsally, and the spiracle is ventral. The presence of jaw sheaths suggests that the larvae might feed while undergoing development in aerial plants. The tadpole of Nelsonophryne aequatorialis is described based on a series of 17 …
Two New Species Of Eleutherodactylus (Anura: Leptodactylidae) From The Cordillera Occidental In Peru, Edgar Lehr, William Duellman
Two New Species Of Eleutherodactylus (Anura: Leptodactylidae) From The Cordillera Occidental In Peru, Edgar Lehr, William Duellman
Edgar Lehr
Two new species of Eleutherodactylus are described from the Cordillera Occidental in northern Peruvian departments of Ancash and La Libertad. The new species from La Libertad is assigned to the Eleutherodactylus orestes Group and inhabits puna at elevations of 3400–4010 m. The Eleutherodactylus orestes Group is redefined. The second new species is assigned to the Eleutherodactylus conspicillatus Group; it represents the southernmost species of Eleutherodactylus in the Cordillera Occidental of the Andes.
Cranial Ontogeny In Philautus Silus (Anura: Ranidae: Rhacophorinae) Reveals Few Similarities With Other Direct-Developing Anurans, Ryan Kerney, Madhava Meegaskumbura, Kelum Manamendra-Arachchi, James Hanken
Cranial Ontogeny In Philautus Silus (Anura: Ranidae: Rhacophorinae) Reveals Few Similarities With Other Direct-Developing Anurans, Ryan Kerney, Madhava Meegaskumbura, Kelum Manamendra-Arachchi, James Hanken
Ryan Kerney
Direct development has evolved in rhaco- phorine frogs independently from other anuran lineages, thereby offering an opportunity to assess features associ- ated with this derived life history. Using a developmen- tal series of the direct-developing Philautus silus (Ranidae: Rhacophorinae) from Sri Lanka, we examine features of cranial morphology that are part of a suite of adaptations that facilitate feeding in free-living tadpoles, but have been changed or lost in other direct-developing lineages. Larval-specific upper jaw cartilages, which are absent from many non-rhacophorine direct-developing species (such as Eleutherodactylus coqui), develop in embryos of P. silus. Similarly, lower jaw cartilages ini- tially …
A New Species Of Arboreal Eleutherodactylus (Anura: Leptodactylidae) From The Amazonian Lowlands Of Central Peru, Edgar Lehr, Claudia Torres, Juana Suarez
A New Species Of Arboreal Eleutherodactylus (Anura: Leptodactylidae) From The Amazonian Lowlands Of Central Peru, Edgar Lehr, Claudia Torres, Juana Suarez
Edgar Lehr
A new species of arboreal Eleutherodactylus is described and assigned to the Eleutherodactylus unistrigatus Group from the Amazonian lowlands of northern Departamento de Cusco, Peru. The new species was found on vegetation 150–800 cm above ground, has a SVL up to 21.9 mm, and is distinguished from other species of the genus by having a green dorsum with white spots; a pointed, brown snout; and by lacking a tympanic membrane and annulus. Males lack vocal slits and nuptial pads; females are unknown.
Three New Species Of Pris Timan Tis (Anura: Leptodactylidae) From The Cordillera De Huancabamba In Northern Peru, Edgar Lehr, Cesar Aguilar, Karen Sie-Ting, Juan Jordan
Three New Species Of Pris Timan Tis (Anura: Leptodactylidae) From The Cordillera De Huancabamba In Northern Peru, Edgar Lehr, Cesar Aguilar, Karen Sie-Ting, Juan Jordan
Edgar Lehr
Three new species of Pristimantis are described from montane forests and pa´ramos at elevations of 1900–3200 m in the Cordillera de Huancabamba in the northern Peruvian departamentos de Cajamarca and Piura. The new species are assigned to the Pristimantis unistrigatus Group and are compared with species from southern Ecuador and northern Peru. One of the new species has a black W-shaped occipital fold, and the groin, anterior and posterior surfaces of the thigh, the concealed surface of tarsus, and axilla are blackish brown with yellowish-orange or reddish-orange flecks. The second species has an olive green dorsum with black and brown …
Behavioral Avoidance Of Ultraviolet-B Radiation By Two Species Of Neotropical Poison-Dart Frogs, Barbara Han, Lee Kats, Rachel Pommerening, Ryan Ferrer, Marcia Murry-Ewers, Andrew Blaustein
Behavioral Avoidance Of Ultraviolet-B Radiation By Two Species Of Neotropical Poison-Dart Frogs, Barbara Han, Lee Kats, Rachel Pommerening, Ryan Ferrer, Marcia Murry-Ewers, Andrew Blaustein
Lee Kats
Many animals, plants, and microorganisms are harmed by ultraviolet-B radiation. In particular, several members of class amphibia are negatively affected by exposure to ultraviolet-B radiation. Exposure to ultraviolet-B radiation can cause death or various types of sublethal damage in amphibians. One mechanism to lessen the effect of harmful ultraviolet-B radiation is to limit exposure to sunlight behaviorally. Few studies have examined the behavioral sensitivity of adult amphibians to ultraviolet-B radiation. Using both field experiments and field observations, we found that two species of diurnal poison-dart frogs in Costa Rica (Dendrobates pumilio, D. auratus) consistently preferred areas in the field and …
A New Species Of Arboreal Rhinella (Anura: Bufonidae) From Yanachaga-Chemillen National Park In Central Peru, Edgar Lehr, Jennifer Pramuk, S. Hedges, Jesus Cordova
A New Species Of Arboreal Rhinella (Anura: Bufonidae) From Yanachaga-Chemillen National Park In Central Peru, Edgar Lehr, Jennifer Pramuk, S. Hedges, Jesus Cordova
Edgar Lehr
A new arboreal species of Rhinella tentatively assigned to the veraguensis Group is described from the National Park Yanachaga Chemillen at 2600 m elevation in central Peru (Departamento de Pasco).The new species is characterized by a maximum snout-vent length of 45.7 mm, a moderate body with relatively long and slim extremities, a dorsum with small tubercles and enlarged tubercles on legs, a distinct tympanum, distinct vertical keel on snout, weak orbitotympanic and postorbital crests, weakly defined row of dorsolateral tubercles, and males with vocal slits, nuptial pads, hypertrophied arms, and a protuberant, ventrally oriented cloaca. The new species is compared …