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Articles 1 - 24 of 24
Full-Text Articles in Entire DC Network
The Effect Of Weather During Rearing On Morphometric Traits Of Juvenile Cliff Swallows, Erin A. Roche, Mary Bomberger Brown, Charles R. Brown
The Effect Of Weather During Rearing On Morphometric Traits Of Juvenile Cliff Swallows, Erin A. Roche, Mary Bomberger Brown, Charles R. Brown
School of Natural Resources: Faculty Publications
Episodes of food deprivation may change how nestling birds allocate energy to the growth of skeletal and feather morphological traits during development. Cliff swallows (Petrochelidon pyrrhonota) are colonial, insectivorous birds that regularly experience brief periods of severe weather–induced food deprivation during the nesting season which may affect offspring development. We investigated how annual variation in timing of rearing and weather were associated with length of wing and tail, skeletal traits, and body mass in juvenile cliff swallows reared in southwestern Nebraska during 2001–2006. As predicted under conditions of food deprivation, nestling skeletal and feather measurements were generally smaller …
Effect Of Abscisic Acid On The Growth And Development Of Lettuce (Lactuca Sativa 1.) Under Varied Irrigation Regimes, Mohamed Abdulla Al Muhairi
Effect Of Abscisic Acid On The Growth And Development Of Lettuce (Lactuca Sativa 1.) Under Varied Irrigation Regimes, Mohamed Abdulla Al Muhairi
Theses
Economically important vegetable crop lettuce (Lactuca sativa L.) of family Asteraceae was selected for the present investigation. It is being cultivated in UAE due to its commercial importance. In lettuce cultivation, major problem is the requirement of large quantity of irrigation water. The present study was aimed to reduce the water consumption of lettuce cultivation, for that, a varied irrigation regime was used with the application of abscisic acid (ABA). The parameters studied were growth, photosynthetic pigments, biochemical constituents, antioxidant potential and antioxidant enzymes activities in lettuce plants under drought stress and its response to ABA under stress. Drought stress …
How Discordant Morphological And Molecular Evolution Among Microorganisms Can Revise Our Notions Of Biodiversity On Earth, Daniel J.G. Lahr, Haywood Dail Laughinghouse, Angela M. Oliverio, Feng Gao, Laura A. Katz
How Discordant Morphological And Molecular Evolution Among Microorganisms Can Revise Our Notions Of Biodiversity On Earth, Daniel J.G. Lahr, Haywood Dail Laughinghouse, Angela M. Oliverio, Feng Gao, Laura A. Katz
Biological Sciences: Faculty Publications
Microscopy has revealed tremendous diversity of bacterial and eukaryotic forms. Recent molecular analyses show discordance in estimates of biodiversity between morphological and molecular analyses. Moreover, phylogenetic analyses of the diversity of microbial forms reveal evidence of convergence at scales as deep as interdomain: morphologies shared between bacteria and eukaryotes. Here, we highlight examples of such discordance, focusing on exemplary lineages such as testate amoebae, ciliates, and cyanobacteria. These have long histories of morphological study, enabling deeper analyses on both the molecular and morphological sides. We discuss examples in two main categories: (i) morphologically identical (or highly similar) individuals that are …
Systematics Of The Neotropical Genus Leptodactylus Fitzinger, 1826 (Anura: Leptodactylidae): Phylogeny, The Relevance Of Non-Molecular Evidence, And Species Accounts, Rafael O. De Sá, Taran Grant, Arley Camargo, W. R. Heyer, María Laura Ponssa, Edward Stanley
Systematics Of The Neotropical Genus Leptodactylus Fitzinger, 1826 (Anura: Leptodactylidae): Phylogeny, The Relevance Of Non-Molecular Evidence, And Species Accounts, Rafael O. De Sá, Taran Grant, Arley Camargo, W. R. Heyer, María Laura Ponssa, Edward Stanley
Biology Faculty Publications
A phylogeny of the species-rich clade of the Neotropical frog genus Leptodactylus sensu stricto is presented on the basis of a total evidence analysis of molecular (mitochondrial and nuclear markers) and non-molecular (adult and larval morphological and behavioral characters) sampled from > 80% of the 75 currently recognized species. Our results support the monophyly of Leptodactylus sensu stricto, with Hydrolaetare placed as its sister group. The reciprocal monophyly of Hydrolaetare and Leptodactylus sensu stricto does not require that we consider Hydrolaetare as either a subgenus or synonym of Leptodactylus sensu lato. We recognize Leptodactylus sensu stricto, Hydrolaetare, Adenomera, and Lithodytes …
Body Shape Divergence In Invasive Round Goby, Cat Collins
Body Shape Divergence In Invasive Round Goby, Cat Collins
DePaul Discoveries
The round goby, Neogobius melanostomus, originally native to the Black and Caspian seas, was introduced into the Great Lakes via ballast water in the 1990’s. Since then, the species has spread to all of the Great Lakes, thriving in the Lake Michigan region and spreading to surrounding bays and rivers. Invasive species are considered to have a high evolutionary potential. Differences in environmental conditions between native and introduced ranges stimulate adaptive evolution. Multiple introductions of an exotic species can result in separate instances of founder effects, further increasing the chance of evolutionary change. A total of 267 round goby specimens …
Comparing And Informing Morphological Species Identifications And Boundaries In Arthropod Gut-Dwelling Protists Using Molecular Phylogenetic Analyses, Mason Hinchcliff, Nicole Reynolds, Eric Tretter, Dustin Heeney, Justin Gause, Tyler Pickell, Prasanna Kandel
Comparing And Informing Morphological Species Identifications And Boundaries In Arthropod Gut-Dwelling Protists Using Molecular Phylogenetic Analyses, Mason Hinchcliff, Nicole Reynolds, Eric Tretter, Dustin Heeney, Justin Gause, Tyler Pickell, Prasanna Kandel
College of Arts and Sciences Presentations
Trichomycetes are fungal and protistan symbionts of arthropods and have been found in marine, freshwater, and terrestrial habitats on every continent except Antarctica. Minimally, trichomycetes associate commensally with their immature aquatic hosts (including black flies, mayflies, stoneflies, isopods, and others) attaching to the chitinous lining of the mid or hindgut. Classified with trichomycetes are Paramoebidium, a group of protists which associate in an obligate manner with their hosts. To date, 16 species of Paramoebidium have been identified by morphological approaches. These descriptions have included characterization and discrimination of species based on thallus (body) length and width, differences in the …
Phylogeny Of Family Limnephilidae (Insecta: Trichoptera) With Emphasis On Tribe Limnephilini (Subfamily Limnephilinae), Tatyana Vshivkova
Phylogeny Of Family Limnephilidae (Insecta: Trichoptera) With Emphasis On Tribe Limnephilini (Subfamily Limnephilinae), Tatyana Vshivkova
John C Morse
Morphological characters of adults and immature stages of Limnephilidae were analyzed with modern phylogenetic techniques, including traditionally used characters and some that have been poorly investigated or never studied. For the first time, monophyly is inferred for the following nominotypical taxa: superfamily Limnephiloidea, family Limnephilidae, subfamily Limnephilinae, tribe Limnephilini, and Limnephilus sensu stricto. Some other higher taxa are distinguished based on high bootstrap support, unreversed synapomorphies, and/or topography, including a new family-group category for Trichoptera, 'Branch,' more inclusive than the family category and less inclusive than the superfamily category. These new taxa in Limnephiloidea are as follows: Brachycentrida New Branch …
A Morphological And Genetic Analysis Of Forensically Important Blow Flies, From Georgia: The Genus Lucilia, Katie S. Googe
A Morphological And Genetic Analysis Of Forensically Important Blow Flies, From Georgia: The Genus Lucilia, Katie S. Googe
Honors College Theses
Identification of Blow flies (Diptera: Calliphoridae) to species is important for estimating postmortem intervals, because insect species develop at different rates. Three Blow fly species in Georgia; Lucilia coeruleiviridis, L. cuprina, and L. sericata are similar morphologically, making identification difficult. Furthermore, the status of L. cuprina is in doubt; this species may be a complex of true L. cuprina, and L. cuprina x L. sericata hybrids. The objective of this study was to survey the Georgia Blow fly community and validate the statuses of L. coeruleiviridis, L. cuprina, and L. sericata, through morphological and …
Phylogeny, Taxonomy And Morphological Evolution In Conostegia (Melastomataceae: Miconieae), Ricardo Kriebel
Phylogeny, Taxonomy And Morphological Evolution In Conostegia (Melastomataceae: Miconieae), Ricardo Kriebel
Dissertations, Theses, and Capstone Projects
The genus Conostegia comprises 77 species of shrubs and trees ranging from Central America to northern South America and the Caribbean. They are ecologically important as they provide pollen for native bees and fruits for birds. One of the main questions of this study is if the genus Conostegia is actually monophyletic. I address this question for the first time by gathering genetic data from four chloroplast regions and two nuclear ribosomal regions of DNA. Phylogenetic analyses of these data revealed that Conostegia is not monophyletic and that a group of species in the genera Clidemia and Miconia fall within …
Ficotylus Laselvae N. Sp. (Tylenchomorpha: Anguinidae) Associated With Ficus Colubrinae In Costa Rica, Robin M. Giblin-Davis, Natsumi Kanzaki, Kerrie A. Davies, Weimin Ye, Yongsan Zeng, Barbara J. Center, Alejandro Esquivel, Thomas O. Powers
Ficotylus Laselvae N. Sp. (Tylenchomorpha: Anguinidae) Associated With Ficus Colubrinae In Costa Rica, Robin M. Giblin-Davis, Natsumi Kanzaki, Kerrie A. Davies, Weimin Ye, Yongsan Zeng, Barbara J. Center, Alejandro Esquivel, Thomas O. Powers
Department of Plant Pathology: Faculty Publications
Ficotylus laselvae n. sp. was recovered from under the bracts of figs (syconia) of Ficus colubrinae from La Selva, Costa Rica, during a survey of nematode rainforest biodiversity and is described herein. This is only the second report of an association between the nematode suborder Tylenchina and the sycones of figs. Previous reports of most nematode associates of the sycones of figs have been from the lumen and involved transmission by female fig wasp pollinators (Agaonidae) during pollination/oviposition (e.g., Schistonchus and Parasitodiplogaster spp.). The association between F. laselvae n. sp. and Ficus colubrinae may involve an invertebrate host, …
Nelsonioideae (Lamiales: Acanthaceae): Revision Of Genera And Catalog Of Species, Thomas F. Daniel, Lucinda A. Mcdade
Nelsonioideae (Lamiales: Acanthaceae): Revision Of Genera And Catalog Of Species, Thomas F. Daniel, Lucinda A. Mcdade
Aliso: A Journal of Systematic and Floristic Botany
A taxonomic account of Acanthaceae subfamily Nelsonioideae based on morphological and phylogenetic data treats five genera with 172 species: Anisosepalum (3), Elytraria (21), Nelsonia (2), Saintpauliopsis (1), and Staurogyne (145). Two other currently recognized genera, Gynocraterium and Ophiorrhiziphyllon, are included within Staurogyne, and the new combinations, Staurogyne guianensis and S. macrobotrya, are proposed. Probable apomorphic and other diagnostic macro- and micromorphological characters are discussed relative to the subfamily and genera. Characters of the inflorescence, androecium (especially pollen), and seed show important phylogenetic and diagnostic signal. A key to genera, generic descriptions and discussions, illustrations, and distribution maps …
Integrating Environmental, Molecular, And Morphological Data To Unravel An Ice-Age Radiation Of Arctic-Alpine Campanula In Western North America, Eric G. Dechaine, Barry M. Wendling, Brenna R. Forester
Integrating Environmental, Molecular, And Morphological Data To Unravel An Ice-Age Radiation Of Arctic-Alpine Campanula In Western North America, Eric G. Dechaine, Barry M. Wendling, Brenna R. Forester
Biology Faculty and Staff Publications
Many arctic-alpine plant genera have undergone speciation during the Quaternary. The bases for these radiations have been ascribed to geographic isolation,abiotic and biotic differences between populations, and/or hybridization andpolyploidization. The Cordilleran Campanula L. (Campanulaceae Juss.), a monophyletic clade of mostly endemic arctic-alpine taxa from western North America, experienced a recent and rapid radiation. We set out to unravel the factors that likely influenced speciation in this group. To do so, we integrated environmental, genetic, and morphological datasets, tested biogeographic hypotheses, and analyzed the potential consequences of the various factors on the evolutionary history of the clade. We created paleodistribution models …
Endocrine And Contralateral Muscle Responses To Short-Term Unilateral Resistance Training, Carleigh Boone
Endocrine And Contralateral Muscle Responses To Short-Term Unilateral Resistance Training, Carleigh Boone
Electronic Theses and Dissertations
PURPOSE: The purpose of this study was to examine the effects of short-term lower body unilateral resistance training on hormonal, muscle morphological, and performance measures in young men. METHODS: Seventeen healthy, untrained young men (Age: 22.8 ± 3.7 y; BMI: 26.5 ± 4.9 kg/m2) were randomly assigned to one of two groups (UT: 22.9 ± 4.6 y, 25.3 ± 4.2 kg/m2; CON: 24.0 ± 4.6 y, 27.7 ± 5.1 kg/m2). Resistance training consisted of 4 weeks of unilateral lower body and bilateral upper body exercises on 3 days per week. Each training session entailed unilateral countermovement jumps (3 × 8), …
A Review And Redescription Of The Cosmopolitan Pseudoscorpion Chelifer Cancroides (Pseudoscorpiones: Cheliferidae), Mark S. Harvey
A Review And Redescription Of The Cosmopolitan Pseudoscorpion Chelifer Cancroides (Pseudoscorpiones: Cheliferidae), Mark S. Harvey
Research outputs 2014 to 2021
The taxonomy of the cheliferid pseudoscorpion genus Chelifer Geoffroy 1762 is reviewed with a single cosmopolitan species, Chelifer cancroides (Linnaeus 1758), with the subspecies C. cancroides orientalis Morikawa 1954 from Japan newly synonymised with C. cancroides. Adults and the final two nymphal stages (tritonymph and deutonymph) are redescribed based on numerous specimens from Europe, North America, Asia and Australasia. The large size variation evident in the samples is documented. The latero-ventral process of the tarsal claws characteristically found in adults (except leg I of the male) is lacking in nymphs, a pattern that is also confirmed in the genera Lissochelifer …
Altered Morphology And Composition Of Zymogen Granules In Acute Pancreatitis, Amanda Flack
Altered Morphology And Composition Of Zymogen Granules In Acute Pancreatitis, Amanda Flack
Wayne State University Dissertations
In healthy physiology, pancreatic digestive enzymes secreted following a meal are stored as inactive zymogens within membrane bound secretory vesicles called Zymogen Granules (ZG), and activated extracellularly. In acute pancreatitis however, the digestive enzymes are prematurely activated within the cell, resulting in autodigestion of the tissue. Pancreatitis is a gastrointestinal disorder in which there are over 200,000 hospitalizations per year with a 5% mortality rate. It has been demonstrated that in acute pancreatitis the digestive enzymes are blocked from being secreted and are activated within the cell leading to acinar cell and surrounding pancreatic tissue death. Little is known about …
The Taxonomic Status And Geographic Distribution Of The European Hare (Lepus Europaeus Pallas, 1778) In Turkey (Mammalia: Lagomorpha), Yasi̇n Demi̇rbaş, İrfan Albayrak
The Taxonomic Status And Geographic Distribution Of The European Hare (Lepus Europaeus Pallas, 1778) In Turkey (Mammalia: Lagomorpha), Yasi̇n Demi̇rbaş, İrfan Albayrak
Turkish Journal of Zoology
This study was based on 125 specimens of hares collected from 61 different localities in Turkey between 2006 and 2010. We present diagnostic characters, pelage coloration, external, cranial and phallic measurements, skull and phallus features, hair structure, and collection localities of hares from Turkey. Additionally, we analyze morphometric variations of 5 regional populations according to the physiography/orography of the study area. Among the morphometric variables, 10 characters (weight, tail length, basal length, condylobasal length, rostral breadth, height of braincase, foramen incisiva length, occipitonasal length, profile length, and mandible length) are found to be significantly different between the populations (ANOVA, P < 0.01). Principal component analysis of 22 morphometric measurements is performed, and 71.56% of total variance is explained through 5 principle components. The Thracian specimen is distinguished from other populations on the first 2 canonical discriminant functions and the cluster dendrogram. The hair structure, as examined by scanning electron microscope, is found to be flattened and imbricate. Our Anatolian specimens are discussed at the subspecies level, comparing them to the relevant literature, and it is concluded that Lepus europaeus in Anatolia is represented by only one subspecies, Lepus europaeus syriacus.
A New Troglobitic Ideoroncid Pseudoscorpion (Pseudoscorpiones: Ideoroncidae) From Southern Africa, Mark S. Harvey, Gerhard Du Preez
A New Troglobitic Ideoroncid Pseudoscorpion (Pseudoscorpiones: Ideoroncidae) From Southern Africa, Mark S. Harvey, Gerhard Du Preez
Research outputs 2014 to 2021
The first blind African species of Ideoroncidae is described from a cave in northwestern Botswana, Botswanoncus ellisi, representing a new genus and a new species. Apart from the complete lack of eyes, it is also unusual in having the lowest recorded number of trichobothria of any adult ideoroncid with 17 on the fixed finger and nine on the movable finger.
The Northernmost European Record Of Parasetodes Respersellus (Trichoptera: Leptoceridae) From The Courish Spit (Russia) With Notes On Its Distribution And Imaginal Morphology, Edyta Buczynska, Anatoly P. Shapoval, Pawel Buczynski
The Northernmost European Record Of Parasetodes Respersellus (Trichoptera: Leptoceridae) From The Courish Spit (Russia) With Notes On Its Distribution And Imaginal Morphology, Edyta Buczynska, Anatoly P. Shapoval, Pawel Buczynski
Turkish Journal of Zoology
Parasetodes respersellus (Rambur, 1842) is the only representative of its genus in Europe. So far, it has been reported in 6 countries (24 sites), and 3 of the reports come from the 1960s and from earlier historical references. Between 24 and 28 August 2011 a male and a female of this species were attracted to a light trap in the Courish Spit (Russia). The paper presents the following topics concerning this species: the distribution area and the status of existing records in particular countries, considerations about the potential breeding site of the collected specimens, remarks on the origins of a …
Morphology, Histochemistry, And Ultrastructure Of Foliar Mucilage-Producing Trichomes Of Harpagophytum Procumbens (Pedaliaceae), Yougasphree Naidoo, Samia Heneidak, Arvind Bhatt, Nazeera Kasim, Gonasageran Naidoo
Morphology, Histochemistry, And Ultrastructure Of Foliar Mucilage-Producing Trichomes Of Harpagophytum Procumbens (Pedaliaceae), Yougasphree Naidoo, Samia Heneidak, Arvind Bhatt, Nazeera Kasim, Gonasageran Naidoo
Turkish Journal of Botany
The morphology, histochemistry, and ultrastructure of foliar mucilage-producing trichomes of Harpagophytum procumbens are investigated using a combination of light and electron microscopy. The leaves of H. procumbens bear short and long glandular trichomes comprising 1 or 2 basal epidermal cells, a stalk of 1-3 cells, a short neck cell, and a head of 2-5 cells. These trichomes are distributed on both leaf sides with a greater abundance on the abaxial side. Both types of trichomes secrete copious amounts of secretion as droplets onto the leaf surface, and the release occurs through micropores in the head cuticles. The secreted material is …
Morphology And Genetic Affinities Of A Novel Chattonella Isolate (Raphidophyceae) Isolated From Iran’S South Coast (Oman Sea), Gilan Attaran Fariman, Christopher John Stanley Bolch
Morphology And Genetic Affinities Of A Novel Chattonella Isolate (Raphidophyceae) Isolated From Iran’S South Coast (Oman Sea), Gilan Attaran Fariman, Christopher John Stanley Bolch
Turkish Journal of Botany
The morphology and genetic affinity of a novel raphidophyte belonging to the genus Chattonella Biecheler is described for the first time from the Oman Sea along the south-east coast of Iran. While morphologically very similar to Chattonella subsalsa Biecheler, the Iranian isolates contain a distinct red eyespot. A comparison of LSU-rDNA and rDNA-ITS show that the Iranian isolate is genetically distinct from other Chattonella subsalsa strains isolated from across a wide global range and indicates that the Iranian isolates represent a distinct species related to Chattonella subsalsa.
Sem Analysis Of The Epibenthic Diatoms On Eudendrium Racemosum (Hydrozoa) From The Mediterranean Sea, Tiziana Romagnoli, Cecilia Totti, Stefano Accoroni, Mario De Stefano, Chiara Pennesi
Sem Analysis Of The Epibenthic Diatoms On Eudendrium Racemosum (Hydrozoa) From The Mediterranean Sea, Tiziana Romagnoli, Cecilia Totti, Stefano Accoroni, Mario De Stefano, Chiara Pennesi
Turkish Journal of Botany
In this work, the valve fine structure, morphology, and dimensions of the epibenthic diatoms living on the marine hydroid Eudendrium racemosum Cavolini were investigated through SEM analysis. Hydroid samples were collected from the Ligurian Sea (Mediterranean Sea), from October 2002 to October 2003, with monthly frequency, allowing definition of the annual cycle of diatom communities. Following several taxonomic/systematic papers, this floristics paper documents 32 new records of diatoms (13 araphid, 17 biraphid, 2 monoraphid), which have been classified into different growth forms (adnate, erect, motile, tube-dwelling). Moreover, new information on morphologic data and biodiversity in the Mediterranean Sea are offered, …
Leaf Morphology And Anatomy Of 7 Varieties Of Ficus Deltoidea (Moraceae), Hasan Nudin Nur Fatihah, Mat Nashriyah, Abdul Rashid Nor Zaimah, Mahmud Khairil, Abdul Manaf Ali
Leaf Morphology And Anatomy Of 7 Varieties Of Ficus Deltoidea (Moraceae), Hasan Nudin Nur Fatihah, Mat Nashriyah, Abdul Rashid Nor Zaimah, Mahmud Khairil, Abdul Manaf Ali
Turkish Journal of Botany
The extreme morphological variations and unclear boundaries between varieties can lead to the misleading identification of Ficus deltoidea Jack (Moraceae) varieties. This has encouraged many taxonomists and botanists to study the variation within F. deltoidea. Thus, correct identification of F. deltoidea varieties is important, as several morphological and anatomical characters are variety-specific. The present study aims to evaluate the morphology and anatomy of leaf in 7 varieties of F. deltoidea, namely var. deltoidea, var. angustifolia, var. trengganuensis, var. bilobata, var. intermedia, var. kunstleri, and var. motleyana. It also aims to contribute to the identification of the varieties based on the …
A Taxonomic Revision Of The Genus Cephalaria (Caprifoliaceae) In Turkey, Ramazan Süleyman Göktürk, Hüseyi̇n Sümbül
A Taxonomic Revision Of The Genus Cephalaria (Caprifoliaceae) In Turkey, Ramazan Süleyman Göktürk, Hüseyi̇n Sümbül
Turkish Journal of Botany
The morphological features of Cephalaria Schrad. ex Roem. & Schult. were studied based on our specimens collected between 1994 and 2010 in Turkey and herbarium specimens from various herbaria. In the present study, typifications, a list of synonyms, descriptions, ecology, phytogeographical regions, conservation status, and distribution of all studied taxa are given. Taxonomic relationships between similar species are discussed. Illustrations of habit, flower, calyx, involucel, and involucral and receptacular bracts of some species are given. Colour images of some species are also provided. Additional new characters were determined that were not previously given in descriptions of Cephalaria species in the …
A Revision And Phylogenetic Analysis Of The Genus Eutyphlus Leconte (Coleoptera: Staphylinidae: Pselaphinae) With A Comparison Of Sampling Methodologies, Brittany Elin Owens
A Revision And Phylogenetic Analysis Of The Genus Eutyphlus Leconte (Coleoptera: Staphylinidae: Pselaphinae) With A Comparison Of Sampling Methodologies, Brittany Elin Owens
LSU Master's Theses
My thesis research includes three components: (1) a methodology project, (2) a systematic project comprising a taxonomic revision, and (3) a morphology-based, cladistic analysis. 1. The methodological study compared the Winkler (Moczarski) eclector and the Berlese-Tullgren funnel (referred to hereafter as “Winkler” and “Berlese” funnels, respectively) as methods for extracting forest litter-dwelling Coleoptera from sifted substrate, with a focus on relevance for taxonomic studies. A general review of the history and methodologies of leaf litter arthropod extraction was provided, in conjunction with repeated, timed trials to compare the relative effectiveness of the two methods using litter samples from various geographic …