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A Re-Assessment Of Priority Amphibian Species Of Peru, Edgar Lehr, Laurence Jarvis, Ariadne Angulo, Alessandro Catenazzi, Rudolf Von May, Jason Brown, James Lewis Aug 2015

A Re-Assessment Of Priority Amphibian Species Of Peru, Edgar Lehr, Laurence Jarvis, Ariadne Angulo, Alessandro Catenazzi, Rudolf Von May, Jason Brown, James Lewis

Edgar Lehr

Peru supports approximately 588 amphibian species, of which 492 have been assessed on the IUCN Red List of Threatened Species. Of these, 111 are classified as Threatened, with 69 species classified as Critically Endangered or Endangered. In addition, 140 amphibian species remain Data Deficient. We re-assessed the conservation status of 38 amphibian species originally identified as potentially Threatened by von May et al. (2008), using the IUCN Red List Categories and Criteria. Fourteen species assessments changed as a result of re-assessment, of which eight changed from Data Deficient to Threatened; two changed from Data Deficient to Near Threatened and Least ...


Spatial Patterns Of Road Mortality: Assessing Turtle Barrier Conservation Strategies, Dorothy Ives-Dewey, James Lewandowski May 2015

Spatial Patterns Of Road Mortality: Assessing Turtle Barrier Conservation Strategies, Dorothy Ives-Dewey, James Lewandowski

Dorothy Ives-Dewey

No abstract provided.


Reduction Of Water Surface Tension Significantly Impacts Gecko Adhesion Underwater, Peter Niewiarowski, Ali Dhinojwala, Alyssa Stark, Brandon Mcclung Mar 2015

Reduction Of Water Surface Tension Significantly Impacts Gecko Adhesion Underwater, Peter Niewiarowski, Ali Dhinojwala, Alyssa Stark, Brandon Mcclung

Dr. Peter H. Niewiarowski

The gecko adhesive system is dependent on weak van der Waals interactions that are multiplied across thousands of fine hair-like structures (setae) on geckos' toe pads. Due to the requirements of van der Waals forces, we expect that any interruption between the setae and substrate, such as a water layer, will compromise adhesion. Our recent results suggest, however, that the air layer (plastron) surrounding the superhydrophobic toe pads aid in expelling water at the contact interface and create strong shear adhesion in water when in contact with hydrophobic surfaces. To test the function of the air plastron, we reduced the ...


The Larvae Of Eurycea Junaluska (Amphibia: Caudata: Plethodontidae), With Comments On Distribution, Travis Ryan Feb 2015

The Larvae Of Eurycea Junaluska (Amphibia: Caudata: Plethodontidae), With Comments On Distribution, Travis Ryan

Travis J. Ryan

Travis J. Ryan's shorter contribution to Copeia 1997.


Ultrastructure Of The Reproductive System Of The Black Swamp Snake (Seminatrix Pygaea): Part Ii. Annual Oviducal Cycle, David Sever, Travis Ryan, Deborah Patton, Shannon Swafford Feb 2015

Ultrastructure Of The Reproductive System Of The Black Swamp Snake (Seminatrix Pygaea): Part Ii. Annual Oviducal Cycle, David Sever, Travis Ryan, Deborah Patton, Shannon Swafford

Travis J. Ryan

This article is the first ultrastructural study on the annual oviducal cycle in a snake. The ultrastructure of the oviduct was studied in 21 females of the viviparous natricine snake Seminatrix pygaea. Specimens were collected and sacrificed in March, May, June, July, and October from one locale in South Carolina during 1998–1999. The sample included individuals: 1) in an inactive reproductive condition, 2) mated but prior to ovulation, and 3) from early and late periods of gravidity. The oviduct possesses four distinct regions from cranial to caudal: the anterior infundibulum, the posterior infundibulum containing sperm storage tubules (SSTs), the ...


Does Sex Influence Post-Reproductive Metamorphosis In Ambystoma Talpoideum?, Travis Ryan, Gabrielle Swenson Feb 2015

Does Sex Influence Post-Reproductive Metamorphosis In Ambystoma Talpoideum?, Travis Ryan, Gabrielle Swenson

Travis J. Ryan

Shorter communication in the Journal of Herpetology v. 35.


Eurycea Junaluska. Morphology, Travis Ryan Feb 2015

Eurycea Junaluska. Morphology, Travis Ryan

Travis J. Ryan

Morphology of Junaluska salamander.


Growth And The Expression Of Alternative Life Cycles In The Salamander Ambystoma Talpoideum (Caudata: Ambystomatidae), Travis Ryan, Raymond Semlitsch Feb 2015

Growth And The Expression Of Alternative Life Cycles In The Salamander Ambystoma Talpoideum (Caudata: Ambystomatidae), Travis Ryan, Raymond Semlitsch

Travis J. Ryan

Complex life cycles (CLCs) contain larval and adult phases that are morphologically and ecologically distinct. Simple life cycles (SLCs) have evolved from CLCs repeatedly in a wide variety of lineages but the processes that may underlie the transition have rarely been identified or investigated experimentally. We examined the influence of larval growth rate on the facultative expression of alternative life cycles (metamorphosis or maturation as gill-bearing adults [= paedomorphosis]) in the salamander Ambystoma talpoideum. We manipulated growth rates by altering the amount of food individuals received throughout larval development. The expression of alternative life cycles in A. talpoideum is influenced by ...


Evaporative Water Loss In Two Natricine Snakes, Nerodia Fasciata And Seminatrix Pygaea, Christopher Winne, Travis Ryan, Yale Leiden, Michael Dorcas Feb 2015

Evaporative Water Loss In Two Natricine Snakes, Nerodia Fasciata And Seminatrix Pygaea, Christopher Winne, Travis Ryan, Yale Leiden, Michael Dorcas

Travis J. Ryan

Shorter communication in Journal of Herpetology v. 35.


Aspects Of Sex-Specific Differences In The Expression Of An Alternative Life Cycle In The Salamander Ambystoma Talpoideum, Christopher Winne, Travis Ryan Feb 2015

Aspects Of Sex-Specific Differences In The Expression Of An Alternative Life Cycle In The Salamander Ambystoma Talpoideum, Christopher Winne, Travis Ryan

Travis J. Ryan

A recent evolutionary ecological model of facultative paedomorphosis predicts that body size of mature individuals should be larger than immatures of the same cohort. We investigated sex-specific differences in body size and maturation within a single cohort of branchiate (= larval and paedomorphic) mole salamanders, Ambystoma talpoideum. In addition, we also sampled the population after the breeding season, as some individuals began to undergo metamorphosis and leave the pond. The branchiate population was female-biased (62.7%), and mature (paedomorphic) females were significantly smaller than paedomorphic males or immature (larval) females. The majority of male branchiates were mature (86.6%), whereas significantly ...


Life History Evolution And Adaptive Radiation Of Hemidactyliine Salamanders, Travis Ryan, R. Bruce Feb 2015

Life History Evolution And Adaptive Radiation Of Hemidactyliine Salamanders, Travis Ryan, R. Bruce

Travis J. Ryan

T.J. Ryan and R.C. Bruce's contribution to: The Biology of Plethodontid Salamanders, R. C. Bruce, R. G. Jaeger, and L. D. Houck, eds. Kluwer Academic/Plenum Publishers, New York.


Ultrastructure Of The Reproductive System Of The Black Swamp Snake (Seminatrix Pygaea). I. Evidence For Oviducal Sperm Storage, David Sever, Travis Ryan Feb 2015

Ultrastructure Of The Reproductive System Of The Black Swamp Snake (Seminatrix Pygaea). I. Evidence For Oviducal Sperm Storage, David Sever, Travis Ryan

Travis J. Ryan

Oviducal sperm storage in the viviparous (lecithotrophic) colubrid snake Seminatrix pygaea was studied by light and electron microscopy. Out of 17 adult snakes examined from May–October, sperm were found in the oviducts of only two specimens. In a preovulatory female sacrificed 14 May, sperm were found in the oviducal lumen and sperm storage tubules (SSTs) of the posterior infundibulum. In a nonvitellogenic female sacrificed 9 June, sperm were found in the lumen and glands of the posterior uterus and anterior vagina, indicating a recent mating. The glands in the posterior infundibulum and vagina were simple or compound tubular, whereas ...


Larval Life History And Abundance Of A Rare Salamander, Eurycea Junaluska (Plethodontidae), Travis Ryan Feb 2015

Larval Life History And Abundance Of A Rare Salamander, Eurycea Junaluska (Plethodontidae), Travis Ryan

Travis J. Ryan

The larval life history of Eurycea junaluska was studied in three southwestern North Carolina populations. Populations were sampled quarterly over a 13 mo period and size-class analyses were used to evaluate the pattern of larval growth and metamorphosis. Young of the year appeared in the late spring and experienced rapid growth through the first summer. Growth slowed in the second year and metamorphosis usually occured in the summer at about 25.5 mo post-hatching, although some data suggest that either 1yr or 3yr larval periods may be possible. The overall larval growth rate of E. junaluska is estimated at 1 ...


Biomass Turnover, Energy Balance, And Interpopulation Variation In The Stream Limpet, Ferrissia Rivularis (Say), With Special Reference To Respiration, Growth, And Fecundity, Albert Burky Feb 2015

Biomass Turnover, Energy Balance, And Interpopulation Variation In The Stream Limpet, Ferrissia Rivularis (Say), With Special Reference To Respiration, Growth, And Fecundity, Albert Burky

Albert J. Burky

This investigation extends from 1965 through 1968 and involves 42,926 individual measurements on 19,479 limpets from populations of F. rivularis in the Canandaigua Outlet at Alloway, New York (AL)* and in Black Creek at Cleveland, New York (BC)*, with some comparative results from a population in Chittenango Creek at Cazenovia, New York (CC)*. These localities are located in the Seneca-Clyde-Oneida drainage system which flows by way of the Oswego River into Lake Ontario. For populations at AL (eutrophic environment) and BC (mesotrophic environment) variations in life-cycle, accompanied by marked differences in fecundity and biomass turnover rates (growth and ...


Barnacle Bonding: Morphology Of Attachment Of Xenobalanus Globicipitis To Its Host Tursiops Truncatus, Mark Pugliese, Stefanie Boettger, Frank Fish Oct 2014

Barnacle Bonding: Morphology Of Attachment Of Xenobalanus Globicipitis To Its Host Tursiops Truncatus, Mark Pugliese, Stefanie Boettger, Frank Fish

Frank E. Fish

No abstract provided.


Morphology And Microanatomy Of Harbor Porpoise (Phocoena Phocoena ) Dorsal Fin Tubercles, Carly Ginter, S. Boettger, Frank Fish Oct 2014

Morphology And Microanatomy Of Harbor Porpoise (Phocoena Phocoena ) Dorsal Fin Tubercles, Carly Ginter, S. Boettger, Frank Fish

Frank E. Fish

No abstract provided.


Morphology And Microanatomy Of Harbor Porpoise (Phocoena Phocoena ) Dorsal Fin Tubercles, Carly Ginter, S. Boettger, Frank Fish Oct 2014

Morphology And Microanatomy Of Harbor Porpoise (Phocoena Phocoena ) Dorsal Fin Tubercles, Carly Ginter, S. Boettger, Frank Fish

S. Anne Boettger

No abstract provided.


Barnacle Bonding: Morphology Of Attachment Of Xenobalanus Globicipitis To Its Host Tursiops Truncatus, Mark Pugliese, Stefanie Boettger, Frank Fish Oct 2014

Barnacle Bonding: Morphology Of Attachment Of Xenobalanus Globicipitis To Its Host Tursiops Truncatus, Mark Pugliese, Stefanie Boettger, Frank Fish

S. Anne Boettger

No abstract provided.


What Can We Learn From Confusing Olivella Columellaris And O. Semistriata, Two Key Species In Panamic Sandy Beach Ecosystems?, Alison Troost, Samantha Rupert, Ariel Cyrus, Frank Paladino, Benjamin Dattilo, Winfried Peters Jul 2014

What Can We Learn From Confusing Olivella Columellaris And O. Semistriata, Two Key Species In Panamic Sandy Beach Ecosystems?, Alison Troost, Samantha Rupert, Ariel Cyrus, Frank Paladino, Benjamin Dattilo, Winfried Peters

Benjamin F. Dattilo

Olivella columellaris (Sowerby 1825) and O. semistriata (Gray 1839) are suspension feeding, swash surfing snails on tropical sandy beaches of the east Pacific. While they often are the numerically dominant macrofaunal element in their habitats, their biology is poorly understood; the two species actually have been confused in all of the few publications that address their ecology. Frequent misidentifications in publications and collections contributed also to an overestimation of the geographic overlap of the two species. To provide a sound taxonomic basis for further functional, ecological, and evolutionary investigations, we evaluated the validity of diagnostic traits in wild populations and ...


The First Molecular Phylogeny Of Buthidae (Scorpiones), Victor Fet, Benjamin Gantenbein, Alexander Gromov, Graeme Lowe, Wilson Lourenço Jan 2014

The First Molecular Phylogeny Of Buthidae (Scorpiones), Victor Fet, Benjamin Gantenbein, Alexander Gromov, Graeme Lowe, Wilson Lourenço

Victor Fet

The first partial phylogeny of family Buthidae (17 genera) is presented, based on molecular data (16S rRNA mitochondrial DNA). The strong support for a monophyletic Old World group of 13 genera (mainly Palearctic desert forms) is demonstrated, while representative genera from Madagascar (Grosphus) and Southeast Asia (Lychas) group outside, as well as New World genera Centruroides and Rhopalurus. A very strong support is observed for the first time for three groups of Old World genera: (a) Compsobuthus, Mesobuthus, Liobuthus, Kraepelinia; (b) Hottentotta, Buthacus; (c) Orthochirus, Anomalobuthus. Phylogenetic hypotheses are discussed.


Etudes On Iurids, V. Further Revision Of Iurus Thorell, 1876 (Scorpiones: Iuridae), With A Description Of A New Genus And Two New Species, Michael Soleglad, Victor Fet, František Kovařík, Ersen Yağmur Jan 2014

Etudes On Iurids, V. Further Revision Of Iurus Thorell, 1876 (Scorpiones: Iuridae), With A Description Of A New Genus And Two New Species, Michael Soleglad, Victor Fet, František Kovařík, Ersen Yağmur

Victor Fet

Iurus populations from the Aegean area are studied, including the Greek islands of Crete, Karpathos, Kythira, Rhodes, and Samos. A new genus, Protoiurus gen. nov., and two new species, Protoiurus rhodiensis sp. nov. and P. stathiae sp. nov., are described. The two genera, Iurus and Protoiurus, are diagnosed by their hemispermatophore structure; a cladistic analysis based on this structure is presented. Genus Iurus Thorell, 1876 includes three species: I. dekanum, I. dufoureius, and I. kinzelbachi; genus Protoiurus includes five species: P. asiaticus comb. nov., P. kadleci comb. nov., P. kraepelini comb. nov., P. rhodiensis sp. nov., and P. stathiae sp ...


The Cretaceous Scorpion Genus, Archaeobuthus, Revisited (Scorpiones: Archaeobuthidae), Chris Baptista, Jorge Santiago-Blay, Victor Fet, Michael Soleglad Jan 2014

The Cretaceous Scorpion Genus, Archaeobuthus, Revisited (Scorpiones: Archaeobuthidae), Chris Baptista, Jorge Santiago-Blay, Victor Fet, Michael Soleglad

Victor Fet

No abstract provided.


Determining Winter Flounder Spawning Sites In Two Connecticut Estuaries, Eric Schultz, Jose Pereira, Peter Auster Jan 2014

Determining Winter Flounder Spawning Sites In Two Connecticut Estuaries, Eric Schultz, Jose Pereira, Peter Auster

Jose J Pereira

Winter flounder (Pseudopleuronectes americanus) come inshore during the late winter and early spring to lay their eggs in shallow bays and estuaries along the coast. Unlike most fish eggs, which are buoyant, these eggs are demersal and sink to the seafloor. This makes them vulnerable to burial from various types of natural and human caused disturbances (e.g., storms, mobile fishing gear, maintenance dredging). Our objective was to map spawning areas in two harbors and search for generalities among these sites that would allow us to predict where winter flounder might spawn in other areas. This would allow managers to ...


Species Distribution Modelling Using Bioclimatic Variables To Determine The Impacts Of A Changing Climate On The Western Ringtail Possum (Pseudocheirus Occidentals; Pseudocheiridae), Shaun Molloy, Robert Davis, Eddie Van Etten Dec 2013

Species Distribution Modelling Using Bioclimatic Variables To Determine The Impacts Of A Changing Climate On The Western Ringtail Possum (Pseudocheirus Occidentals; Pseudocheiridae), Shaun Molloy, Robert Davis, Eddie Van Etten

Shaun W Molloy Dr

The ngwayir (western ringtail possum Pseudocheirus occidentalis) is an arboreal species endemic to south-western Australia. The range and population of this species have been significantly reduced through multiple anthropogenic impacts. Classified as vulnerable, the ngwayir is highly susceptible to extremes of temperature and reduced water intake. Ngwayir distribution was determined using three different species distribution models using ngwayir presence records related to a set of 19 bioclimatic variables derived fromhistorical climate data, overlaid with 2050 climate change scenarios.MaxEnt was used to identify core habitat and demonstrate how this habitat may be impacted. A supplementary modelling exercise was also conducted ...


On Hypogean Roncocreagris (Arachnida: Pseudoscorpiones: Neobisiidae) From Portugal, With Descriptions Of Three New Species, Ana Reboleira, Juan Zaragoza, Fernando Gonçalves, Pedro Oromí Jun 2013

On Hypogean Roncocreagris (Arachnida: Pseudoscorpiones: Neobisiidae) From Portugal, With Descriptions Of Three New Species, Ana Reboleira, Juan Zaragoza, Fernando Gonçalves, Pedro Oromí

Ana Sofia P.S. Reboleira

Three new hypogean species of the Iberian genus Roncocreagris Mahnert, 1974 are described from mainland Portugal: R. borgesi sp. nov. and R. gepesi sp. nov. from caves in the Sicó massif, and R. occidentalis sp. nov. from caves in the Montejunto and Cesaredas karst plateau. This brings to nine the number of known hypogean species of the mostly Iberian genus Roncocreagris: five from Portugal and four from Spain. Ecological comments and new localities for some of the previously known species are also included.


Germline Transgenic Methods For Tracking Cells And Testing Gene Function During Regeneration In The Axolotl, Shahryar Khattak, Maritta Schuez, Tobias Richter, Dunja Knapp, Saori Haigo, Tatiana Sandoval-Guzman, Kristyna Hradlikova, Annett Duemmler, Ryan Kerney, Elly Tanaka Jun 2013

Germline Transgenic Methods For Tracking Cells And Testing Gene Function During Regeneration In The Axolotl, Shahryar Khattak, Maritta Schuez, Tobias Richter, Dunja Knapp, Saori Haigo, Tatiana Sandoval-Guzman, Kristyna Hradlikova, Annett Duemmler, Ryan Kerney, Elly Tanaka

Ryan Kerney

The salamander is the only tetrapod that regenerates complex body structures throughout life. Deciphering the underlying molecular processes of regeneration is fundamental for regenerative medicine and developmental biology, but the model organism had limited tools for molecular analysis. We describe a comprehensive set of germline transgenic strains in the laboratory-bred salamander Ambystoma mexicanum (axolotl) that open up the cellular and molecular genetic dissection of regeneration. We demonstrate tissue-dependent con- trol of gene expression in nerve, Schwann cells, oligodendrocytes, muscle, epidermis, and cartilage. Furthermore, we demonstrate the use of tamoxifen-induced Cre/loxP-mediated recombination to indelibly mark different cell types. Finally, we ...


Subterranean Species Of Acipes Attems, 1937 (Diplopoda, Julida, Blaniulidae), Henrik Enghoff, Ana Reboleira Apr 2013

Subterranean Species Of Acipes Attems, 1937 (Diplopoda, Julida, Blaniulidae), Henrik Enghoff, Ana Reboleira

Ana Sofia P.S. Reboleira

Two new blind, cave-dwelling species of the genus Acipes Attems, 1937, are described from the Algarve, southern Portugal: A. machadoi n. sp. and A. bifilum n. sp. Acipes andalusius Enghoff & Mauriès, 1999, is reported from the mesovoid shallow substratum in Alicante (Spain), 250 km from the type locality in Andalusia.


The Genus Boreviulisoma Brolemann, 1928—An Iberian-N African Outlier Of A Mainly Tropical Tribe Of Millipedes (Diplopoda: Polydesmida: Paradoxosomatidae), Ana Reboleira, Henrik Enghoff Apr 2013

The Genus Boreviulisoma Brolemann, 1928—An Iberian-N African Outlier Of A Mainly Tropical Tribe Of Millipedes (Diplopoda: Polydesmida: Paradoxosomatidae), Ana Reboleira, Henrik Enghoff

Ana Sofia P.S. Reboleira

The genus Boreviulisoma Brolemann, 1928, is revised. The synonymy of Liliputia Attems, 1952, under Boreviulisoma is confirmed, but L. badia Attems, 1951, from Spain, is resurrected, as Boreviulisoma badium, from synonymy under B. liouvilleiBrolemann, 1928 (the type species of Boreviulisoma) from Morocco. Boreviulisoma barrocalense n. sp. is described from the subterranean environment of the Algarve, the southernmost province of Portugal. The distribution of the three known species of Boreviulisoma is mapped, main characters of the genus and its species are reviewed and a key to species of the genus is included. The isolated occurrence of Boreviulisoma badium and B. barrocalense ...


Acute Toxicity Of Copper Sulfate And Potassium Dichromate On Stygobiont Proasellus: General Aspects Of Groundwater Ecotoxicology And Future Perspectives, Ana Reboleira, Nelson Abrantes, Pedro Oromí, Fernando Gonçalves Mar 2013

Acute Toxicity Of Copper Sulfate And Potassium Dichromate On Stygobiont Proasellus: General Aspects Of Groundwater Ecotoxicology And Future Perspectives, Ana Reboleira, Nelson Abrantes, Pedro Oromí, Fernando Gonçalves

Ana Sofia P.S. Reboleira

Karst systems harbor large groundwater resources for human consumption and represent an important habitat for rare and unprotected specialized animals, the so-called stygofauna. Due to the highly adapted features towards underground life, together with the geographic isolation provided by the subterranean aquifers, groundwater-dwelling animals may lose the ability to face sudden changes on their ecosystems, and therefore the risk of extinction is remarkably high. A little is known about their sensitiveness, especially linked to contamination pressure in urbanized karst areas. Understanding the impact of contaminants on stygofauna is important for setting groundwater environmental quality and management of karst systems. We ...


Catalogue Of Type Material In The Entomological Collection Of The University Of La Laguna (Canary Islands). I – Arachnida, Ana Reboleira, Antonio Pérez, Nuria Macías-Hernandez, Heriberto López, S. De La Cruz, Pedro Oromí Oct 2012

Catalogue Of Type Material In The Entomological Collection Of The University Of La Laguna (Canary Islands). I – Arachnida, Ana Reboleira, Antonio Pérez, Nuria Macías-Hernandez, Heriberto López, S. De La Cruz, Pedro Oromí

Ana Sofia P.S. Reboleira

A catalogue of arachnid type specimens of the collection kept at the Department of Animal Biology, University of La Laguna (Spain) is presented. It harbours type material of 104 species belonging to 23 families of arachnids, represented by 21 holotypes and 164 paratypes for 23 species of pseudoscorpions, and 49 holotypes, 218 paratypes and 3 syntypes for 81 species of spiders. This collection is using the criteria and standards of the Global Biodiversity Information Facility (GBIF) for cataloguing and computerization of the specimens. Type specimens were checked with the original descriptions, and relevant additional information from original labels not included ...