keyword
MENU ▼
Read by QxMD icon Read
search

Dolphin

keyword
https://www.readbyqxmd.com/read/28636677/contextual-imitation-of-intransitive-body-actions-in-a-beluga-whale-delphinapterus-leucas-a-do-as-other-does-study
#1
José Z Abramson, Mª Victoria Hernández-Lloreda, José-Antonio Esteban, Fernando Colmenares, Francisco Aboitiz, Josep Call
Cetaceans are remarkable for exhibiting group-specific behavioral traditions or cultures in several behavioral domains (e.g., calls, behavioral tactics), and the question of whether they can be acquired socially, for example through imitative processes, remains open. Here we used a "Do as other does" paradigm to experimentally study the ability of a beluga to imitate familiar intransitive (body-oriented) actions demonstrated by a conspecific. The participant was first trained to copy three familiar behaviors on command (training phase) and then was tested for her ability to generalize the learned "Do as the other does" command to a different set of three familiar behaviors (testing phase)...
2017: PloS One
https://www.readbyqxmd.com/read/28631158/rapid-and-reliable-steroid-hormone-profiling-in-tursiops-truncatus-blubber-using-liquid-chromatography-tandem-mass-spectrometry-lc-ms-ms
#2
Ashley S P Boggs, Tracey B Schock, Lori H Schwacke, Thomas M Galligan, Jeanine S Morey, Wayne E McFee, John R Kucklick
Monitoring of marine mammal steroid hormone status using matrices alternative to blood is desirable due to the ability to remotely collect samples, which minimizes stress to the animal. However, measurement techniques in alternative matrices such as blubber described to date are limited in the number and types of hormones measured. Therefore, a new method using bead homogenization to QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) extraction, C18 post extraction cleanup and analysis by liquid chromatography tandem mass spectrometry (LC-MS/MS) was developed and applied to the measurement of hormone suites in bottlenose dolphin blubber...
June 19, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28626607/phenotypic-variation-in-dorsal-fin-morphology-of-coastal-bottlenose-dolphins-tursiops-truncatus-off-mexico
#3
Eduardo Morteo, Axayácatl Rocha-Olivares, Rodrigo Morteo, David W Weller
Geographic variation in external morphology is thought to reflect an interplay between genotype and the environment. Morphological variation has been well-described for a number of cetacean species, including the bottlenose dolphin (Tursiops truncatus). In this study we analyzed dorsal fin morphometric variation in coastal bottlenose dolphins to search for geographic patterns at different spatial scales. A total of 533 dorsal fin images from 19 available photo-identification catalogs across the three Mexican oceanic regions (Pacific Ocean n = 6, Gulf of California n = 6 and, Gulf of Mexico n = 7) were used in the analysis...
2017: PeerJ
https://www.readbyqxmd.com/read/28605694/effect-of-increased-kick-frequency-on-propelling-efficiency-and-muscular-co-activation-during-underwater-dolphin-kick
#4
Keisuke Kobayashi Yamakawa, Hirofumi Shimojo, Hideki Takagi, Shozo Tsubakimoto, Yasuo Sengoku
In this study, we investigated the effects of increased kick frequency on the propelling efficiency and the muscular co-activation during underwater dolphin kick. Participants included eight female collegiate swimmers. The participants performed seven 15-m underwater dolphin kick swimming trials at different kick frequencies, which is 85, 90, 95, 100, 105, 110, and 115% of their maximum effort. The Froude (propelling) efficiency of the dolphin kick was calculated from the kinematic analysis. The surface electromyography was measured from six muscles (rectus abdominis, erector spinae, rectus femoris, biceps femoris, tibialis anterior, and gastrocnemius)...
June 9, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28600681/responses-to-familiar-and-unfamiliar-objects-by-belugas-delphinapterus-leucas-bottlenose-dolphins-tursiops-truncatus-and-pacific-white-sided-dolphins-lagenorhynchus-obliquidens
#5
Sara Guarino, Deirdre Yeater, Steve Lacy, Tricia Dees, Heather M Hill
Previous research with bottlenose dolphins (Tursiops truncatus) demonstrated their ability to discriminate between familiar and unfamiliar stimuli. Dolphins gazed longer at unfamiliar stimuli. The current study attempted to extend this original research by examining the responses of three species of cetaceans to objects that differed in familiarity. Eleven belugas from two facilities, five bottlenose dolphins and five Pacific white-sided dolphins housed at one facility were presented different objects in a free-swim scenario...
June 9, 2017: Animal Cognition
https://www.readbyqxmd.com/read/28599539/the-effects-of-click-rate-on-the-auditory-brainstem-response-of-bottlenose-dolphins
#6
Robert F Burkard, James J Finneran, Jason Mulsow
Rate manipulations can be used to study adaptation processes in the auditory nerve and brainstem. For this reason, rate effects on the click-evoked auditory brainstem response (ABR) have been investigated in many mammals, including humans. In this study, click-evoked ABRs were obtained in eight bottlenose dolphins (Tursiops truncatus) while varying stimulus rate using both conventional averaging and maximum length sequences (MLSs), which allow disentangling ABRs that overlap in time and thus permit the study of adaptation at high rates...
May 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28599518/neural-representation-of-the-self-heard-biosonar-click-in-bottlenose-dolphins-tursiops-truncatus
#7
James J Finneran, Jason Mulsow, Dorian S Houser, Carolyn E Schlundt
The neural representation of the dolphin broadband biosonar click was investigated by measuring auditory brainstem responses (ABRs) to "self-heard" clicks masked with noise bursts having various high-pass cutoff frequencies. Narrowband ABRs were obtained by sequentially subtracting responses obtained with noise having lower high-pass cutoff frequencies from those obtained with noise having higher cutoff frequencies. For comparison to the biosonar data, ABRs were also measured in a passive listening experiment, where external clicks and masking noise were presented to the dolphins and narrowband ABRs were again derived using the subtractive high-pass noise technique...
May 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28598511/evaluating-atlantic-bottlenose-dolphin-tursiops-truncatus-leukocyte-differential-counts-comparing-the-cellavision-dm96-and-the-manual-method
#8
Julia Zaias, Christine Bradley, Jill Richardson, Holli C Eskelinen, Frances Ikpatt, Carolyn Cray
BACKGROUND: The leukocyte differential count is an excellent diagnostic tool; however, the manual differential count has several drawbacks, especially for nontraditional species. Automated cell analyzers commonly used in veterinary practices require species-specific validation for use in nondomestic species other than dogs and cats. OBJECTIVES: The purpose of this study was to examine the potential of the CellaVision DM96 (DM96), an automated image analysis system, as a rapid and accurate method for providing a WBC differential count in comparison to the manual WBC differential count in bottlenose dolphins...
June 9, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28591849/pseudomonas-aeruginosa-quorum-sensing-response-in-the-absence-of-functional-lasr-and-lasi-proteins-the-case-of-strain-148-a-virulent-dolphin-isolate
#9
Estefanía Morales, Abigail González-Valdez, Luis Servín-González, Gloria Soberón-Chávez
Pseudomonas aeruginosa is an opportunistic pathogen that presents a complex regulatory network called 'quorum-sensing', which is responsible for the transcription of genes coding for several traits implicated in its pathogenicity. Strain 148 is a dolphin-isolate that has been shown to produce quorum-sensing regulated virulence-traits and to be virulent in a mouse model, despite the fact that it contains a 20 kbp deletion that eliminates from the chromosome the lasR gene and the lasI promoter. LasR is a key quorum-sensing transcriptional regulator that, when coupled with the autoinducer 3-oxo-dodecanoyl homoserine lactone (3O-C12-HSL) produced by LasI, activates transcription of genes coding for some virulence-associated traits such as elastase, lasI, rhlI and rhlR...
June 7, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28574221/validation-of-a-method-for-in%C3%A2-vivo-3d-dose-reconstruction-in-sbrt-using-a-new-transmission-detector
#10
Yuji Nakaguchi, Takeshi Ono, Masato Maruyama, Yoshinobu Shimohigashi, Yudai Kai
Stereotactic body radiation therapy (SBRT) involves the delivery of substantially larger doses over fewer fractions than conventional therapy. Therefore, SBRT treatments will strongly benefit patients using vivo patient dose verification, because the impact of the fraction is large. For in vivo measurements, a commercially available quality assurance (QA) system is the COMPASS system (IBA Dosimetry, Germany). For measurements, the system uses a new transmission detector (Dolphin, IBA Dosimetry). In this study, we evaluated the method for in vivo 3D dose reconstruction for SBRT using this new transmission detector...
June 2, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28573006/a-new-fossil-dolphin-dilophodelphis-fordycei-provides-insight-into-the-evolution-of-supraorbital-crests-in-platanistoidea-mammalia-cetacea
#11
Alexandra T Boersma, Matthew R McCurry, Nicholas D Pyenson
Many odontocete groups have developed enlarged facial crests, although these crests differ in topography, composition and function. The most elaborate crests occur in the South Asian river dolphin (Platanista gangetica), in which they rise dorsally as delicate, pneumatized wings anterior of the facial bones. Their position wrapping around the melon suggests their involvement in sound propagation for echolocation. To better understand the origin of crests in this lineage, we examined facial crests among fossil and living Platanistoidea, including a new taxon, Dilophodelphis fordycei, nov...
May 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28569355/comparative-physiology-of-vocal-musculature-in-two-odontocetes-the-bottlenose-dolphin-tursiops-truncatus-and-the-harbor-porpoise-phocoena-phocoena
#12
Nicole M Thometz, Jennifer L Dearolf, Robin C Dunkin, Dawn P Noren, Marla M Holt, Olivia C Sims, Brandon C Cathey, Terrie M Williams
The mechanism by which odontocetes produce sound is unique among mammals. To gain insight into the physiological properties that support sound production in toothed whales, we examined myoglobin content ([Mb]), non-bicarbonate buffering capacity (β), fiber-type profiles, and myosin heavy chain expression of vocal musculature in two odontocetes: the bottlenose dolphin (Tursiops truncatus; n = 4) and the harbor porpoise (Phocoena phocoena; n = 5). Both species use the same anatomical structures to produce sound, but differ markedly in their vocal repertoires...
May 31, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/28557501/support-from-the-morphological-family-when-unembedding-the-stem
#13
Elisabeth Beyersmann, Jonathan Grainger
Recent research investigating embedded stem priming effects with the masked priming paradigm and pseudoword primes (e.g., quickify-quick) has shown that priming effects can be obtained even when the embedded target word is followed by a non-morphological ending (e.g., quickald-quick). Here we examine the specific nature of such priming effects by testing whether they are modulated by morphological family size. We reasoned that if the effects are driven by pre-lexical orthographic processing then they should not be influenced by the family size of the embedded target word...
May 29, 2017: Journal of Experimental Psychology. Learning, Memory, and Cognition
https://www.readbyqxmd.com/read/28547342/trichosporon-asteroides-isolated-from-cutaneous-lesions-of-a-suspected-case-of-paracoccidioidomycosis-ceti-in-a-bottlenose-dolphin-tursiops-truncatus
#14
Keiichi Ueda, Ichiro Nakamura, Eiko Nakagawa Itano, Kazunori Takemura, Yasutomo Nakazato, Ayako Sano
"Paracoccidioidomycosis ceti" is a rare zoonotic fungal infection affecting dolphins and is endemic worldwide. The causative agents are Paracoccidioides species; however, it is impossible to isolate the fungal species. We isolated Trichosporon asteroides from multifocal, irregularly raised skin lesions on a female bottlenose dolphin (Tursiops truncatus) captured off coast of Japan, which was suspected to have "paracoccidioidomycosis ceti." An abundance of round, yeast-like cells was detected in a potassium hydroxide direct-mount specimen of the skin samples; however, nested PCR targeting the partial sequence of 43-kDa glycoprotein-coding gene correspondent to Paracoccidioides sp...
May 25, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28542897/osteoarthritis-in-two-marine-mammals-and-22-land-mammals-learning-from-skeletal-remains
#15
Korakot Nganvongpanit, Ratsadakorn Soponteerakul, Piyatida Kaewkumpai, Veerasak Punyapornwithaya, Kittisak Buddhachat, Raksiri Nomsiri, Patcharaporn Kaewmong, Kongkiat Kittiwatanawong, Rachanchai Chawangwongsanukun, Taweepoke Angkawanish, Chatchote Thitaram, Pasuk Mahakkanukrauh
The occurrence of osteoarthritis (OA) in marine mammals is still questionable. Here we investigated the prevalence of OA in marine (dolphin and dugong) and terrestrial mammals (Asian elephant, Asiatic buffalo, camel, cat, cattle, deer, dog, domestic goat, horse, human, hyena, impala, lion, Malayan tapir, Assam macaque, mule, pig, rabbit, red kangaroo, sheep, tiger and waterbuck). Skeletal remains obtained from five institutes were used as subjects; a total of 45 different parts (locations) of bones were observed for OA lesions...
May 23, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28526686/amazon-river-dolphins-inia-geoffrensis-modify-biosonar-output-level-and-directivity-during-prey-interception-in-the-wild
#16
Michael Ladegaard, Frants Havmand Jensen, Kristian Beedholm, Vera Maria Ferreira da Silva, Peter Teglberg Madsen
Toothed whales have evolved to live in extremely different habitats and yet they all rely strongly on echolocation for finding and catching prey. Such biosonar based foraging involves distinct phases of searching for, approaching, and capturing prey, where echolocating animals gradually adjust sonar output to actively shape the flow of sensory information. Measuring those outputs in absolute levels requires hydrophone arrays centred on the biosonar beam axis, but this has never been done for wild toothed whales approaching and capturing prey...
May 19, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28521967/does-pterygomaxillary-disjunction-in-surgically-assisted-rapid-maxillary-expansion-influence-upper-airway-volume-a-prospective-study-using-dolphin-imaging-3d
#17
J Rômulo de Medeiros, M Ferraro Bezerra, F W Gurgel Costa, T Pinheiro Bezerra, C R de Araújo Alencar, E C Studart Soares
Surgically assisted rapid maxillary expansion has been used for the treatment of transverse maxillary deficiency. This prospective study aimed to evaluate the effect of this surgery (with or without pterygomaxillary disjunction) on the upper airway volume. The patients were randomly divided into two groups: without pterygomaxillary disjunction (-PD) and with pterygomaxillary disjunction (+PD). Eleven patients per group were estimated to obtain a representative sample (90% of power and 95% of confidence level)...
May 15, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28513327/dolphin-morbillivirus-in-a-fin-whale-balaenoptera-physalus-in-denmark-2016
#18
Wendy K Jo, Miguel L Grilo, Peter Wohlsein, Emilie U Andersen-Ranberg, Mette S Hansen, Carl C Kinze, Charlotte K Hjulsager, Morten T Olsen, Kristina Lehnert, Ellen Prenger-Berninghoff, Ursula Siebert, Albert Osterhaus, Wolfgang Baumgärtner, Lasse F Jensen, Erhard van der Vries
We studied the etiology of encephalitis in a fin whale (Balaenoptera physalus) that stranded in 2016 on the coast of Denmark. Dolphin morbillivirus (DMV) was detected in the brain and other organs. Phylogenetics showed close relation to DMV isolated from a striped dolphin (Stenella coeruleoalba) from Spain in 2012.
May 17, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28510577/are-horses-capable-of-mirror-self-recognition-a-pilot-study
#19
Paolo Baragli, Elisa Demuru, Chiara Scopa, Elisabetta Palagi
Mirror Self-Recognition (MSR) unveils complex cognitive, social and emotional skills and it has been found only in humans and few other species, such as great apes, dolphins, elephants and magpies. In this pilot study, we tested if horses show the capacity of MSR. Four subjects living socially under naturalistic conditions were selected for the experiment. We adopted the classical mark test, which consists in placing a coloured mark on an out-of-view body part, visible only through mirror inspection. If the animal considers the image as its own, it will use its reflection to detect the mark and will try to explore it...
2017: PloS One
https://www.readbyqxmd.com/read/28506838/phylogenomic-analysis-of-the-complete-sequence-of-a-gastroenteritis-associated-cetacean-adenovirus-bottlenose-dolphin-adenovirus-1-reveals-a-high-degree-of-genetic-divergence
#20
Maja Malmberg, Consuelo Rubio-Guerri, Juliette Hayer, Daniel García-Párraga, Elvira Nieto-Pelegrín, Mar Melero, Teresa Álvaro, Mónica Valls, Jose Manuel Sánchez-Vizcaíno, Sándor Belák, Fredrik Granberg
Adenoviruses are common pathogens in vertebrates, infecting a wide range of hosts, but only having rarely been detected and correlated with disease in cetaceans. This article describes the first complete genomic sequence of a cetacean adenovirus, bottlenose dolphin adenovirus 1 (BdAdV-1), detected in captive bottlenose dolphin population (Tursiops truncatus) suffering from self-limiting gastroenteritis. The complete genome sequence of BdAdV-1 was recovered from data generated by high-throughput sequencing and validated by Sanger sequencing...
May 12, 2017: Infection, Genetics and Evolution
keyword
keyword
35937
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"