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Articles 361 - 390 of 602
Full-Text Articles in Animal Sciences
Foraging Ecology And Habitat Selection Of The Western Yellow Robin (Eopsaltria Griseogularis) In A Wandoo Woodland, Western Australia : Conservation Ecology Of A Declining Species, Jarrad A. Cousin
Theses: Doctorates and Masters
This study examined the foraging ecology and habitat selection of the Western Yellow Robin in Wandoo Woodland at Dryandra Woodland, Western Australia. The foraging ecology component was comprised of an examination of foraging behaviour, perch-use selection and pounce-site characteristics. The habitat selection component was comprised of an examination of habitat characteristics of site occupancy and general nesting ecology. The implications of current management at Dryandra Woodland to the ecology of the Western Yellow Robin are discussed in reference to the findings of the present study. Ground-pouncing was the dominant foraging behaviour throughout all seasons, with dead branches of live subcanopy …
Birds, Landslides And Pastures: A Biogeographic Conundrum, Mark R. Welford
Birds, Landslides And Pastures: A Biogeographic Conundrum, Mark R. Welford
Earth, Environment & Sustainability: Faculty Presentations (1988-2022)
No abstract provided.
Experimental Mycobacteriosis In Striped Bass Morone Saxatilis, D. T. Gauthier, M. W. Rhodes, W. K. Vogelbein, H. Kator, C. A. Ottinger
Experimental Mycobacteriosis In Striped Bass Morone Saxatilis, D. T. Gauthier, M. W. Rhodes, W. K. Vogelbein, H. Kator, C. A. Ottinger
Biological Sciences Faculty Publications
Striped bass Morone saxatilis were infected intraperitoneally with approximately 105 Mycobacterium marinum, M. shottsii sp. nov., or M. gordonae. Infected fish were maintained in a flow-through freshwater system at 18 to 21°C, and were examined histologically and bacteriologically at 2, 4, 6, 8, 17, 26, 36 and 45 wk post-infection (p.i.). M. marinum caused acute peritonitis, followed by extensive granuloma development in the mesenteries, spleen and anterior kidney. Granulomas in these tissues underwent a temporal progression of distinct morphological stages, culminating in well-circumscribed lesions surrounded by normal or healing tissue. Mycobacteria were cultured in high numbers from …
Proportional Assessment Of X And Y Chromosome-Bearing Spermatozoa In Bull And Boar Ejaculates Using Conventional And Real-Time Pcr Techniques, Julius Braden Paul
Proportional Assessment Of X And Y Chromosome-Bearing Spermatozoa In Bull And Boar Ejaculates Using Conventional And Real-Time Pcr Techniques, Julius Braden Paul
LSU Doctoral Dissertations
Considerable variation in the percentage of Y-chromosome bearing spermatozoa (%Y-CBS) between ejaculates in the same male has been reported. Collection regime has been speculated to influence the degree of variation in %Y-CBS in bull ejaculates (Chandler et al., 1998). Experiments were designed to evaluate the effects of two collection regimes on %Y-CBS. Conventional PCR combined with gel electrophoresis and image analysis was employed to determine %Y-CBS in ejaculates from two bulls collected on 7-day intervals and two bulls on 21-day intervals. Real-time PCR technology was used to quantify %Y-CBS in the same ejaculates. Boar ejaculates were also analyzed with both …
Chemical Composition Of Some Components Of The Arrestment Pheromone Of The Black-Legged Tick, Ixodes Scapularis (Acari : Ixodidae) And Their Use In Tick Control, Daniel E. Sonenshine, Trevor Adams, Sandra A. Allan, John Mclaughlin, Francis X. Webster
Chemical Composition Of Some Components Of The Arrestment Pheromone Of The Black-Legged Tick, Ixodes Scapularis (Acari : Ixodidae) And Their Use In Tick Control, Daniel E. Sonenshine, Trevor Adams, Sandra A. Allan, John Mclaughlin, Francis X. Webster
Biological Sciences Faculty Publications
Chemical analysis (high-performance liquid chromatography) and bioassay demonstrated the presence of compounds that seem to be components of the Ixodes scapularis arrestment pheromone. Only two purines, guanine and xanthine, were found in acidified saline extracts made from cast skins after molting of fed nymphs, fed larvae, and fecal/excretory exudates deposited by unfed adults on substrates in their environment. The ratio of guanine to xanthine was 10.6:1 in an extract from the nymphal skins versus 0.95:1 in an extract from the larval skins. Guanine, xanthine, and traces of a third purine, tentatively identified as 8-azaguanine, were found in extracts made from …
Hydrodynamic Stability Of Swimming In Ostraciid Fishes: Role Of The Carapace In The Smooth Trunkfish Lactophrys Triqueter (Teleostei : Ostraciidae), Ian K. Bartol, Morteza Gharib, Daniel Weihs, Paul W. Webb, Jay R. Hove, Malcolm S. Gordon
Hydrodynamic Stability Of Swimming In Ostraciid Fishes: Role Of The Carapace In The Smooth Trunkfish Lactophrys Triqueter (Teleostei : Ostraciidae), Ian K. Bartol, Morteza Gharib, Daniel Weihs, Paul W. Webb, Jay R. Hove, Malcolm S. Gordon
Biological Sciences Faculty Publications
The hydrodynamic bases for the stability of locomotory motions in fishes are poorly understood, even for those fishes, such as the rigid-bodied smooth trunkfish Lactophrys triqueter, that exhibit unusually small amplitude recoil movements during rectilinear swimming. We have studied the role played by the bony carapace of the smooth trunkfish in generating trimming forces that self-correct for instabilities. The flow patterns, forces and moments on and around anatomically exact, smooth trunkfish models positioned at both pitching and yawing angles of attack were investigated using three methods: digital particle image velocimetry (DPIV), pressure distribution measurements, and force balance measurements. Models …
Determination Of The Botanical And Chemical Composition Of The Pasture Diet Selected By Llamas (Lama Glama) During The Rainy Season In The Community Of Pujrata, Cristóbal Achu Nina
Determination Of The Botanical And Chemical Composition Of The Pasture Diet Selected By Llamas (Lama Glama) During The Rainy Season In The Community Of Pujrata, Cristóbal Achu Nina
Theses and Dissertations
Llamas (Lama glama) take advantage of poor natural forage (grasses and others) due to their efficient digestive physiology that is adapted for this type of forage. The problem now faced is the gradual exhaustion of the native grassland (low phytomass production). The vegetation does not cover the dry matter consumption requirements, and less so the nutrient requirements, of these animals. Because of this there is the necessity of determining the botanical composition, pasture selection by plant parts, and chemical composition of what llamas ingest in order to improve these animals' nutrition in the pasture. This study occurred at the Larqa …
Application Of Gene Transfer Technology For Genetic Improvement Of Fish, Ali̇ye Sarmaşik
Application Of Gene Transfer Technology For Genetic Improvement Of Fish, Ali̇ye Sarmaşik
Turkish Journal of Zoology
The worldwide decline of natural fish stocks, the accumulation of chemical pollutants in aquatic environments and increasing world consumption of fish products has provided an impetus in many countries for a rapid growth in aquaculture. Fish produced from aquaculture currently account for over one-fourth of fish consumed by humans. However, success in aquaculture mainly depends on breeding, feeding and protection from disease. Application of recombinant DNA technology in aquaculture can help to improve these requirements.
Investigations Into Discourella Modesta (Leonardi, 1899) (Acari: Mesostigmata: Uropodina), A New Species For Turkey, Durmuş Ali̇ Bal, Muhli̇s Özkan
Investigations Into Discourella Modesta (Leonardi, 1899) (Acari: Mesostigmata: Uropodina), A New Species For Turkey, Durmuş Ali̇ Bal, Muhli̇s Özkan
Turkish Journal of Zoology
In this study, developmental stages of D. modesta (Leonardi, 1899) females collected from Erzincan province and its surroundings by Bal in 1997-2001 were evaluated. The specimens were examined in the light of previous studies. Earlier definitions, the structural features of females and nymphs, and the localities of the species were reviewed. Original drawings were also made of our specimens.
Nine New Naididae (Oligochaeta) Species For Sakarya River, Turkey, Nai̇me Arslan, Yalçin Şahi̇n
Nine New Naididae (Oligochaeta) Species For Sakarya River, Turkey, Nai̇me Arslan, Yalçin Şahi̇n
Turkish Journal of Zoology
The material was collected between September 1995 and August 1998 from 79 stations on Sakarya River. A total of nine Naididae species (Ophidonais serpentina (Müller, 1773), Stylaria lacustris Lamarck, 1816, Nais pardalis Piguet, 1906, Nais variabilis Piguet, 1906, Pristinella jenkinae (Stephenson, 1931), Pristina foreli (Piguet, 1906), P. longiseta longiseta Ehrenberg, 1824, P. proboscidea Beddard, 1896 and P. aequiseta Bourne, 1891) belonging to five genera were recorded for the first time from Sakarya River.
The Parasitoids Of Yponomeuta Malinellus Zeller (Lepidoptera: Yponomeutidae) In Sivas, Lütfi̇ye Gençer
The Parasitoids Of Yponomeuta Malinellus Zeller (Lepidoptera: Yponomeutidae) In Sivas, Lütfi̇ye Gençer
Turkish Journal of Zoology
The objective of this study was to determine parasitoids attacking the apple ermine moth (Yponomeuta malinellus Zeller) in Sivas. Ten parasitoid species belonging to hymenopteran families of Ichneumonidae, Eulophidae, Encrytidae and Elasmidae and a dipteran family Tachinidae were found. Parasitoid guilds, their effect on the population of Yponomeuta malinellus and their importance in biological control are discussed.
Check List Of The Hydrophilidae (Coleoptera) Species Of Turkey And A New Record For The Turkish Fauna, Ümi̇t İncekara, Abdullah Mart, Orhan Erman
Check List Of The Hydrophilidae (Coleoptera) Species Of Turkey And A New Record For The Turkish Fauna, Ümi̇t İncekara, Abdullah Mart, Orhan Erman
Turkish Journal of Zoology
A check list of Hydrophilidae species known in Turkey is presented for the first time. In addition, their distributions in Turkey are given. Fifty-four species are determined. Of these, Hydrophilus atterimus Eschscholtz, 1822, a new record for the Turkish fauna, is reviewed and compared with H. piceus (Linnaeus, 1758).
A Study On Micromys Minitus (Pallas, 1771) (Mammalia: Rodentia) In Turkish Thrace, Beytullah Özkan, Nuri̇ Yi̇ği̇t, Ercüment Çolak
A Study On Micromys Minitus (Pallas, 1771) (Mammalia: Rodentia) In Turkish Thrace, Beytullah Özkan, Nuri̇ Yi̇ği̇t, Ercüment Çolak
Turkish Journal of Zoology
Micromys minutus was recorded from six localities in Turkish Thrace. The external, cranial and karyological peculiarities of the specimens were determined. The dorsal colour of the specimens is dark brownish, being lighter on the sides, but the rostrum and cheek are markedly ochre. Mean tail length relative to body length is 90.5%, and the occipito-nasal length is 18.1 mm. The diploid number of chromosomes was 2n = 68 with NF = 136 and NFa = 132.
Age-Dependent Cranial Variations In Mesocricetus Brandti (Mammalia: Rodentia) Distributed In Turkey, Nuri̇ Yi̇ği̇t
Age-Dependent Cranial Variations In Mesocricetus Brandti (Mammalia: Rodentia) Distributed In Turkey, Nuri̇ Yi̇ği̇t
Turkish Journal of Zoology
Animals were assigned to four age groups according to molar wear, field notes and external and cranial measurements. Six days-old animals were referred to newborn, up to 30 days as young and thereafter as adult; animals with very worn molars were considered old. In addition to the statistical differences among age groups, it was determined that the main morphological differences were in the interorbital constriction, the shape of the braincase, the ridges and the position of occipital condyles. While the incisors and the first molars erupted in seven days-old animals, the second and third molars begun to erupt after seven …
Answers (Tekzip) To Letter: The Ostracoda (Crustacea) Fauna Of Lakes Erikli Hamam, Mert, Pedina And Saka (İgneada, Kırklareli, Turkey) Külköylüoğlu, O., Usta, E., & Babaç, M.T. (2002) Turk. J. Zool. Volume: 26, İssue: 3, 263-263, Selçuk Altinsaçli
Turkish Journal of Zoology
No abstract provided.
The Taxonomy And Distribution Of Apodemus Agrarius (Pallas, 1771) (Mammalia: Rodentia) In The European Part Of Turkey, Haluk Kefeli̇oğlu, Coşkun Tez, İslam Gündüz
The Taxonomy And Distribution Of Apodemus Agrarius (Pallas, 1771) (Mammalia: Rodentia) In The European Part Of Turkey, Haluk Kefeli̇oğlu, Coşkun Tez, İslam Gündüz
Turkish Journal of Zoology
The morphological and karyological characteristics of 27 specimens of Apodemus agrarius (Pallas, 1771) from the European part of Turkey were studied in detail and compared with those in the literature in order to provide a wider perspective on the taxonomic status of Apodemus agrarius in Turkey. In all the samples examined, 2n = 48 karyotype was observed with FN = 56 and FNa = 54. The 2n = 48 karyotype includes three pairs of metacentric, one pair of submetacentric and 19 pairs of acrocentric autosomes. Of the sex chromosomes, the X is a large acrocentric and the Y is a …
On Testudo Graeca Linnaeus, 1758 Specimens Of Mardin Province, Oğuz Türkozan, Di̇nçer Ayaz, Cemal Varol Tok, Durmuş Ci̇han
On Testudo Graeca Linnaeus, 1758 Specimens Of Mardin Province, Oğuz Türkozan, Di̇nçer Ayaz, Cemal Varol Tok, Durmuş Ci̇han
Turkish Journal of Zoology
Twenty-four (16 male, 8 female) specimens of the Mediterranean spur-thighed tortoise Testudo graeca were examined from Mardin, southeastern Turkey. For morphological comparisons, 15 morphometric characters and 31 ratios developed by combinations of straight carapace length (SCL) and straight carapace width (SCW) were investigated. Males and females were differentiated from one another in terms of straight carapace length/curved carapace length (SCL/CCL), straight carapace length/plastron length (SCL/PL), straight carapace length/abdominal suture length (SCL/AbSL), straight carapace length/anal suture length (SCL/ASL), plastron length/plastron width 1 (PL/PW1), carapace width/straight carapace length (SCW/SCL), carapace width/anal suture length (SCW/ASL), and carapace width/plastron width 1 (SCW/PW1) according to …
Population Dynamics Of Soft-Furred Field Rat, Millardia Meltada, In Rice And Wheat Fields In Central Punjab, Pakistan, Shaher Bano Lathiya, Abdul Rauf Khokhar, Syed Muzaffar Ahmed
Population Dynamics Of Soft-Furred Field Rat, Millardia Meltada, In Rice And Wheat Fields In Central Punjab, Pakistan, Shaher Bano Lathiya, Abdul Rauf Khokhar, Syed Muzaffar Ahmed
Turkish Journal of Zoology
Data on the abundance, reproduction, diet and damage index of the soft-furred field rat Millardia meltada were collected during the rice and wheat seasons. The abundance of Millardia meltada remained high at the post-harvest stage of the rice and wheat crops. The ploughing of fields did not affect the abundance of Millardia. The mean annual prevalence of pregnancy was 50% and the mean embryonic litter size 6.2 ± 0.4. Millardia continued to eat wheat and rice grains over a long period even when there was no crop standing in the fields. The damage indices in rice and wheat crops were …
Digestibility Of Legumes And Grassy Forages In Guinea Pig Feeding, Javier Americo Campos Villarroel
Digestibility Of Legumes And Grassy Forages In Guinea Pig Feeding, Javier Americo Campos Villarroel
Theses and Dissertations
With the objective to determine guinea pig digestibility of the nutritive components of Vicia villosa, red clover, and Lolium multiflorum in relation to alfalfa, the digestibility coefficients were evaluated for fiber, protein, dry matter, energy, and dry matter consumption in these three species in a completely random block design with four repetitions. The results showed that for alfalfa digestibility coefficients of 85.7% of the protein and 2806.6 kcal/kg of digestible energy, plus an economic substitution value (ESV) of fiber, protein, and energy of US$0.41 and $0.38/kg and US$0.009/1000 kcal, respectively. Lolium multiflorum had the highest tendency toward digestibility with 60.7% …
In Situ Degradability Of Native Pastures In Llamas (Lama Glama) In The Rainy Season In The Community Of Pujrata, Pacajes Province, Mario Acho Nina
In Situ Degradability Of Native Pastures In Llamas (Lama Glama) In The Rainy Season In The Community Of Pujrata, Pacajes Province, Mario Acho Nina
Theses and Dissertations
The llama (lama glama) in the Bolivian Highlands region is a most important potential resource from the socio-economic point of view for the dedicated producer to the management and exploitation of these Andean camelids, considered as national heritage of our country. The llama is completely adapted to the high plateau system, being considered a three purposed animal in this environment: producer of fiber, meat and work (load). However, due to the expansion of sheep and cattle, they have been marginalized to the poor areas, where they prosper well because they are rustic, sober and greatly efficient in the conversion of …
Cryopreservation By Pellet Freezing Of Epididymal And Ejaculated Spermatozoa From Male Dogs, Brooke Fahrig
Cryopreservation By Pellet Freezing Of Epididymal And Ejaculated Spermatozoa From Male Dogs, Brooke Fahrig
LSU Master's Theses
In this study, I evaluated the cryopreservation by pellet freezing of spermatozoa from individual dogs. In Experiment I, spermatozoa from 15 pairs of epididymides were suspended in glycerol, frozen as pellets of 10, 50, 100, or 200 μl volumes, and thawed by dilution with TALP (Tyrode's solution plus albumin, lactate, pyruvate). In Experiment II, spermatozoa from 16 pairs of epididymides were suspended in glycerol, dimethyl sulfoxide, or ethylene glycol, frozen as 100 μl pellets, and thawed by dilution with TALP, canine capacitation medium (CCM), or 3% sodium citrate solution. In Experiment III, spermatozoa from 15 pairs of epididymides were suspended …
Effects Of Free Methionine And Lysine On In Vitro Fermentation And In Vivo Performance And Ruminal Fermentation Of Late Lactation Holstein Cows, Yi-Hua Chung
LSU Master's Theses
Two experiments were conducted to investigate the effects of free Met and Lys supplementation on ruminal fermentation in vitro and in vivo. In the in vitro study, supplementation of Met and Lys had effects on concentrations of total VFA and NH4+, proportions of acetate, propionate, butyrate, isovalerate, valerate, and the ratio of acetate to propionate. Percentages of microbial N synthesis in effluent pellets were not affected by supplementing Lys and Met. The combination of 0.52% Met and 1.03% (90% DM) Lys resulted in the highest concentration of total VFA, second highest concentration of NH4+, …
Use Of Urine Ph To Predict Incidence Of Ketosis In Transition Dairy Cows, Amy Elizabeth Beem
Use Of Urine Ph To Predict Incidence Of Ketosis In Transition Dairy Cows, Amy Elizabeth Beem
LSU Master's Theses
Forty-one (10 primiparous and 31 multiparous) Holstein cows were used in an experiment to determine the effects of prepartum dietary energy (PDE) and supplemental Ca-propionate on the incidence of ketosis in transition dairy cows and to evaluate the usefulness of urine pH as a predictor for ketosis. Treatment factors were prepartum dietary energy concentration (normal vs. high) with or without 113.5g Ca-Propionate/day (Nutro Cal®, Kemin Industries, Inc., Des Moines, IA). All cows were fed the same basal diet postpartum. Ca-propionate supplementation continued postpartum. Cows were individually fed and dry matter intakes (DMI) were measured daily. Milk production was measured and …
The Effects Of Composition And Processing Of Milk On Foam Characteristics As Measured By Steam Frothing, Michael Levy
The Effects Of Composition And Processing Of Milk On Foam Characteristics As Measured By Steam Frothing, Michael Levy
LSU Master's Theses
Steam frothing of milk is required to produce an acceptable foam for many espresso coffee drinks. Specific aspects of composition and processing may affect the foaming properties of milk. The aim of this study was to determine the effect of fat content, heat treatment, free fatty acid addition and storage time on the frothing properties of milk. The four treatments included: fat content (0.08% and 3.25%), pasteurization temperatures (171°F for 15 seconds and 210°F for 45 seconds), pre and post-pasteurization addition of lauric acid solution (0.0% and 2.0% of 0.5 M concentration) and storage time (1 and 10 days). For …
Wild Dog Control : Facts Behind The Strategies, Peter Thomson
Wild Dog Control : Facts Behind The Strategies, Peter Thomson
Agriculture reports
Background information to how strategies for controlling wild dogs have been developed over the years, not just in Western Australia, but also other parts of Australia. The information is based on scientific studies, including detailed evaluations of techniques and strategies, and also considerable practical experience from doggers, operational staff and landholders. This publication focuses on sheep enterprises.
An Approach To The Measurement Of Sexual Behavior In The Bull (Bos Taurus) Using Variable Female Stimulus Conditions, John Denver Bailey
An Approach To The Measurement Of Sexual Behavior In The Bull (Bos Taurus) Using Variable Female Stimulus Conditions, John Denver Bailey
University of Kentucky Doctoral Dissertations
Most researchers studying sexual behavior of the bull have adopted the practice of severely restraining and sedating female stimuli, utilizing so-called "service stanchions" and quantifying behavioral events expressed by each bull. Based on these observations, bulls are classified as having high, medium, or low libido and ranked according to their ability to "service" the inanimate stimuli. It has been assumed that these methods represent appropriate measurements of reproductive behavior that will be expressed in a natural mating scenario and that bull sexual behavior can be studied in a manner that is independent of the context of the female. Hence, conventional …
Demographic Assessment Of The Blue Crab (Callinectes Sapidus) In Chesapeake Bay Using Extractable Lipofuscins As Age Markers, Se-Jong Ju, David H. Secor, H. Rodger Harvey
Demographic Assessment Of The Blue Crab (Callinectes Sapidus) In Chesapeake Bay Using Extractable Lipofuscins As Age Markers, Se-Jong Ju, David H. Secor, H. Rodger Harvey
OES Faculty Publications
The blue crab (Callinectes sapidus) plays an important economic and ecological role in estuaries and coastal habitats from the Gulf of Mexico to the east coast of North America, but demographic assessments are limited by length-based methods. We applied an alternative aging method using biochemical measures of metabolic byproducts (lipofuscins) sequestered in the neural tissue of eyestalks to examine population age structure. From Chesapeake Bay, subsamples of animals collected from the 1998-99 (n-769) and 1999-2000 (n=367) winter dredge surveys were collected and lipofuscin was measured. Modal analysis of the lipofuscin index provided separation into three modes, whereas carapace-width …
Leptodactylus Mystacinus, M. M. Heyer, W. R. Heyer, Rafael O. De Sá
Leptodactylus Mystacinus, M. M. Heyer, W. R. Heyer, Rafael O. De Sá
Biology Faculty Publications
Adult Leptodactylus mystacinus are of moderate size, the head is as wide as long, and the hind limbs are moderately short (see Table; Heyer and Thompson 2000 provided definitions of adult size and leg length categories for Leptodactylus). Male vocal sacs are not visible externally or at best are weakly expanded laterally and slightly darker than female throats. Male snouts are more spatulate than those of females. Male forearms are not hypertrophied. Males lack asperities on the thumbs and chest. One or two pairs of dorsolateral folds (indicated by dark/light outlining in indifferently preserved specimens) are present: one …
Do Size Differences Of Juvenile Snapper (Pagrus Auratus) In Two Regions Of Shark Bay, Western Australia, Reflect Different Environmental Conditions, Nadia Tapp
Theses: Doctorates and Masters
Aspects of the population biology of juvenile Pagrus auratus in the western gulf of Shark Bay, Western Australia, were investigated to explore the causes of an observed size difference between 0+ fish (first year of life) in the northern and southern regions of that gulf. Five trawl surveys were conducted in each region of the western gulf, from November 2000 to December 2001, to collect juvenile P. auratus. The 0+ fish from the northern region were found to be consistently greater in length by between 10 and 20mm LCF, than those in the southern region, thereby confirming those observed size …
Dna Sequence Analysis Of The Freshwater Mussel Lampsilis Hydiana (Bivalva: Unionidae) In Select Ozark And Ouachita Mountain Streams Of Arkansas, Jennifer A. Lewter, Allen L. Szalanski, Tsunemi Yamashita
Dna Sequence Analysis Of The Freshwater Mussel Lampsilis Hydiana (Bivalva: Unionidae) In Select Ozark And Ouachita Mountain Streams Of Arkansas, Jennifer A. Lewter, Allen L. Szalanski, Tsunemi Yamashita
Journal of the Arkansas Academy of Science
No abstract provided.