A5068866717- Spider Taxonomy and Behavior Studies
- Amphibian and Reptile Biology
- Lepidoptera: Biology and Taxonomy
- Venomous Animal Envenomation and Studies
- Hymenoptera taxonomy and phylogeny
- Coleoptera: Cerambycidae studies
- Entomological Studies and Ecology
- Lipid Membrane Structure and Behavior
- Primate Behavior and Ecology
- Species Distribution and Climate Change
- Insect and Pesticide Research
- Coleoptera Taxonomy and Distribution
- Marine Ecology and Invasive Species
- Plant and animal studies
- Antimicrobial Peptides and Activities
- Identification and Quantification in Food
- Mollusks and Parasites Studies
- Scarabaeidae Beetle Taxonomy and Biogeography
- Neuroscience and Neuropharmacology Research
- Biochemical and Structural Characterization
- Ichthyology and Marine Biology
- Erythrocyte Function and Pathophysiology
- Neurobiology and Insect Physiology Research
- Turtle Biology and Conservation
- Neuroendocrine regulation and behavior
Leibniz Institute for the Analysis of Biodiversity Change
2024
Museum am Rothenbaum
2024
Museum für Naturkunde
2024
Morpho (United States)
2024
Institute of Zoology
2024
Centro Jambatu de Investigación y Conservación de Anfibios
2012-2023
Stanford University
2023
The spider diversity of the family Anyphaenidae in premontane, low evergreen montane and cloud forest from Chocó region Ecuador is examined. A total 287 adult specimens were collected 19 morphospecies identified based on male specimens. Thirteen new species are described one genus proposed. Five Katissa Brescovit, 1997: kurusiki sp. nov., K. puyu tamya yaya nov. guyasamini Shuyushka gen. proposed includes three species: achachay et S. moscai wachi Finally, five Patrera Simon, 1903: P....
The spider families Theridiosomatidae and Symphytognathidae found in the Chocó region of Ecuador are examined, a total 16 69 adult specimens were collected respectively series expeditions. In family Theridiosomatidae, eight new species described four different genera; Chthonos kuyllur n. sp.; Naatlo mayzana Ogulnius laranka sp., O. paku Theridiosoma ankas T. esmeraldas kullki sacha sp. We present first record for with description two genera: Anapistula equatoriana Symphytognatha cabezota
Parental care has evolved repeatedly and independently across animals. While the ecological evolutionary significance of parental behaviour is well recognized, underlying mechanisms remain poorly understood. We took advantage behavioural diversity closely related species South American poison frogs (Family Dendrobatidae) to identify neural correlates shared sexes species. characterized differences in induction, gene expression active neurons activity specific neuronal types three with...
The generalist parasite Trypanosoma cruzi has two phylogenetic lineages associated almost exclusively with bats—Trypanosoma Tcbat and the subspecies T. c. marinkellei. We present new information on genetic variation, geographic distribution, host associations, potential vectors of these lineages. conducted field surveys bats triatomines in southern Ecuador, a country endemic for Chagas disease, screened trypanosomes by microscopy PCR. identified parasites at species genotype levels through...
Alkaloids are important bioactive molecules throughout the natural world, and in many animals they serve as a source of chemical defense against predation. Dendrobatid poison frogs bioaccumulate alkaloids from their diet to make themselves toxic or unpalatable predators. Despite proposed roles plasma proteins mediators alkaloid trafficking bioavailability, responsible have not been identified. We use approaches show that ~50 kDa protein is principal alkaloid-binding molecule blood frogs....
Poison frogs sequester small molecule lipophilic alkaloids from their diet of leaf litter arthropods for use as chemical defenses against predation. Although the dietary acquisition in poison is well-documented, physiological mechanisms alkaloid sequestration has not been investigated. Here, we used RNA sequencing and proteomics to determine how impact mRNA or protein abundance Little Devil Frog (Oophaga sylvatica) compared wild caught chemically defended laboratory raised on an...
French arachnologist Eugène Simon is considered one of the most prolific arachnologists all time. Unfortunately, often provided very short descriptions with or without illustrations which makes recognition his species difficult for subsequent taxonomists. described 3,789 spiders in career, and type specimens are assumed to be held Muséum National d’Histoire Naturelle Paris, France. We present here images eleven Mygalomorphae by E. that were never thoroughly illustrated: Cyrtaucheniidae:...
We review the systematics of frogs Hyloscirtus larinopygion group. A new phylogenetic tree inferred frommitochondrial DNA (partial sequences 12S rRNA, valine-tRNA, and 16S rRNA genes; ~2.3 kb) eleven species ofthe H. group is provided, based on maximum parsimony, likelihood, Bayesian analyses. Ourphylogeny confirms close relationship members with Andean relatives H.armatus group, which also occurs in Andes. tapichalaca placed as sister to rest H.larinopygion two clades (A+B) are evident....
The Jambato Harlequin toad (
Geographic barriers and elevational gradients have long been recognized as important in species diversification. Here, we illustrate an example where both mechanisms shaped the genetic structure of Neotropical rainfrog, Pristimantis ornatissimus, which has also resulted speciation. This was thought to be a single evolutionary lineage distributed throughout Ecuadorian Chocó adjacent foothills Andes. Based on recent sampling P. ornatissimus sensu lato, provide molecular morphological evidence...
Shifts in microbiome community composition can have large effects on host health. It is therefore important to understand how perturbations, like those caused by the introduction of exogenous chemicals, modulate composition. In poison frogs within family Dendrobatidae, skin exposed alkaloids that sequester from their diet and use for defense. Given demonstrated antimicrobial these frog alkaloids, compounds may be structuring microbial community. To test this, we first characterized...
The second species of the enigmatitc genus Kinku Dupérré & Tapia, 2015 is described from Ecuador. new maicu sp. nov. (♂♀) possesses same typical blue coloured abdomen, as well presence in males an abdominal stridulatory organ found type species. SEMs photos male organ, female spinnerets and, internal genitalia are presented for first time.
The genus Linothele (Araneae: Dipluridae) from Ecuador is reviewed. A total of 38 new species are described; the Andes: L. alausi n. sp. (♀), anabellecitae (♀♂), angamarca banos canirasi carchi cayambe cuencana guacamayos gualaquiza guallupe ilinizas ireneae jarrini javieri kaysi lacocha lloa milleri molleturo otokiki peguche podocarpus pomona pristirana pseudoquori rionegro sigchila uvalino victoria yunguilla (♀♂); Pacific region: costenita troncal (♀); and, Amazonian amazonica archidona...
We report the recent finding of four adults Atelopus longirostris, a Critically Endangered species that was last seen in 1989, when catastrophic declines occurred. The rediscovery A. longirostris took place new locality, Junín, 1250–1480 m asl, Provincia Imbabura, Ecuador, on 28–31 March 2016. frogs were found two isolated small patches native forest fragmented area heavily modified for agriculture and livestock; one patch protected by Junín Community Reserve, another non-protected private...
Abstract Some South American poison frogs (Dendrobatidae) are chemically defended and use bright aposematic colors to warn potential predators of their unpalatability. Aposematic signals often frequency‐dependent where individuals deviating from a local model at higher risk predation. However, extreme diversity in the signal has been documented frogs, especially Oophaga . Here, we explore phylogeographic pattern among color‐divergent populations Little Devil frog sylvatica by analyzing...
Abstract The ability to use small molecule alkaloids as defensive chemicals has evolved in many organisms, often via trophic interactions due dietary specialization. Animals with diet-derived defenses must balance food choices maintain their defense reservoirs along other physiological needs. However, environmental availability of prey and preferences vertebrate animals acquired remains largely unexplored. Here, we test the hypothesis that poison frogs sequester from arthropod display...
The Nearctic family Hahniidae is seldom found in South America; only 20 species occur on the continent. Herein, we present first record of mainland Ecuador, with description thirteen new five different genera. In Amaloxenops: A. minimalista n. sp. (female); Kasha gen.: patpa (male, female); Neohahnia: Neohahnia catleyi (female) sp., N. piemontana female), pristirana freibergi paramo and chalupas (male); Paramito papallacta P. oyacachi sp.; Pristirana barthlotti niederi (female), nowickii...
Four new species of the genus Mysmenopsis are described: M. onorei n. sp., otonga fernandoi sp. and chiquita All were collected in diplurid webs therefore assumed to be kleptoparasitic. Five potential host Linothele (Dipluridae) that with symbionts also yanachanka L. pukachumpi zaia tsachilas quori
Abstract Parental care has evolved repeatedly and independently across animals. While the ecological evolutionary significance of parental behaviour is well recognized, underlying mechanisms remain poorly understood. We took advantage behavioural diversity closely related species South American poison frogs (Family Dendrobatidae) to identify neural correlates shared sexes species. characterized differences in induction, gene expression active neurons, activity specific neuronal types three...
The genus Kinku n. gen. is established for the first telemid spider found in South America. new species, turumanya sp. characterized by unique conformation of male palp and presence an abdominal anterioventral stridulatory organ.
Two new species of the spider genus Loxosceles (Araneae: Sicariidae) from Ecuadorian Andes are described: guayllabamba sp. nov. (male, female) and binfordae female). Both part second most speciose “ laeta ” group, which include twenty-four described species. Only three known to occur on mainland Ecuador, one in Galapagos. The synonymy L. alicea under rufescens is rejected, detailed SEM female internal genitalia a map all Ecuador presented.