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Articles 8701 - 8730 of 36512
Full-Text Articles in Animal Sciences
The Effect Of Tannin Extract And N-3 Fatty Acid Source On Nutrient Digestibility, Blood Metabolites, Enzyme Activity, And Ruminal Parameters Of Lactating Ewes, Roghayeh Valizadeh Yonjalli, Farzad Mirzaei Aghjehgheshlagh, Ali Mahdavi, Bahman Navidshad, Hamid Staji
The Effect Of Tannin Extract And N-3 Fatty Acid Source On Nutrient Digestibility, Blood Metabolites, Enzyme Activity, And Ruminal Parameters Of Lactating Ewes, Roghayeh Valizadeh Yonjalli, Farzad Mirzaei Aghjehgheshlagh, Ali Mahdavi, Bahman Navidshad, Hamid Staji
Turkish Journal of Veterinary & Animal Sciences
This study aimed to evaluate the effects of tannin extract and n-3 fatty acid supplementation on nutrient digestibility, ruminal parameters, blood metabolites, and enzyme activity in lactating ewes. Thirty-six lactating ewes were allocated to 6 experimental groups. The dietary treatments were as follows: 1) control, 2) diet supplemented with 2% dry matter (DM) oak leaf tannin extract, 3) diet supplemented with 2% DM grape pomace tannin extract, 4) diet supplemented with 2% DM linseed oil, 5) diet supplemented with 2% DM oak leaf tannin extract and 2% DM linseed oil, and 6) diet supplemented with 2% DM grape pomace tannin …
Effect Of Spermvital® Technology On Conception Rate In Repeat Breeder Multiparous Dairy Cows: Preliminary Results, Alper Koçyi̇ği̇t, Bariş Atalay Uslu, Sai̇t Şendağ, Eli̇sabeth Treupel, Axel Wehrend
Effect Of Spermvital® Technology On Conception Rate In Repeat Breeder Multiparous Dairy Cows: Preliminary Results, Alper Koçyi̇ği̇t, Bariş Atalay Uslu, Sai̇t Şendağ, Eli̇sabeth Treupel, Axel Wehrend
Turkish Journal of Veterinary & Animal Sciences
The aim of this study was to investigate the effect of SV technology on conception rates in repeat breeder multiparous dairy cows. Seventy-nine multiparous Holstein cows from a private dairy farm were used in the study. These animals were cows that had failed to conceive from at least 3 regularly spaced services (repeat breeders). Estrus cycles of the cows were synchronized by 2 injections of the PG analogue, administered 11 days apart. GnRH was applied 48 h after the second injection of PG. Twenty-four h after this administration, the animals were randomly divided into 2 groups, control and SV. The …
Antimicrobial Resistance And Phenotypic And Molecular Detection Of Extended-Spectrum Ss-Lactamases Among Extraintestinal Escherichia Coli Isolated From Pneumonic And Septicemic Sheep And Goats In Rajasthan, India, Fateh Singh, Ganesh Gangaram Sonawane, Jyoti Kumar, Shivendra Kumar Dixit, Rajendra Kumar Meena, Bhupendra Nath Tripathi
Antimicrobial Resistance And Phenotypic And Molecular Detection Of Extended-Spectrum Ss-Lactamases Among Extraintestinal Escherichia Coli Isolated From Pneumonic And Septicemic Sheep And Goats In Rajasthan, India, Fateh Singh, Ganesh Gangaram Sonawane, Jyoti Kumar, Shivendra Kumar Dixit, Rajendra Kumar Meena, Bhupendra Nath Tripathi
Turkish Journal of Veterinary & Animal Sciences
The present study was planned to isolate Escherichia coli from pneumonic and septicemic sheep and goats and to determine antimicrobial resistance (AMR) patterns of the isolates and evaluate them for the presence of extended-spectrum ß-lactamase (ESBL) using the phenotypic and molecular methods. Pneumonic lung tissues and heart blood samples were collected by performing necropsy on sheep (n = 96) and goats (n = 08). The samples were processed and used for bacterial isolation. E. coli isolates (n = 58) including 53 from 34 sheep and 5 from 3 goats were recovered and identified by the cultural and biochemical characteristics and …
A Diagnostic Survey Of Neospora Caninum Infection In Aborted Fetuses In The Middle Black Sea Region And Sivas Province, Turkey, Mustafa Açici, Cenk Soner Bölükbaş, Gökmen Zafer Pekmezci̇, Hande Gürler, Oktay Genç, Ali̇ Tümay Gürler, Selma Kaya, Şi̇nasi̇ Umur
A Diagnostic Survey Of Neospora Caninum Infection In Aborted Fetuses In The Middle Black Sea Region And Sivas Province, Turkey, Mustafa Açici, Cenk Soner Bölükbaş, Gökmen Zafer Pekmezci̇, Hande Gürler, Oktay Genç, Ali̇ Tümay Gürler, Selma Kaya, Şi̇nasi̇ Umur
Turkish Journal of Veterinary & Animal Sciences
Neospora caninum is a major, cosmopolitan, protozoan parasite associated with abortion in cattle and water buffaloes. In this study, real-time PCR was used for the detection and quantification of the burden of N. caninum infections in aborted fetuses in the Middle Black Sea Region and Sivas Province of Turkey. In total, N. caninum DNA was detected in 44 of the 89 (49.4%) aborted fetuses of the cattle and water buffalo from 89 different farms. The authors conclude that the pervasiveness of neosporosis is a threat to cattle breeding in the Middle Black Sea Region and Sivas Province. Real-time PCR testing …
Animal Remains Of Alaybeyi Höyük, Abu Bakar Siddiq
Animal Remains Of Alaybeyi Höyük, Abu Bakar Siddiq
Turkish Journal of Veterinary & Animal Sciences
This paper presents the zooarchaeological observations on animal remains of Alaybeyi Höyük unearthed from 2016 and 2017 excavation sessions. Dated to 4721-4553 cal. BC, Alaybeyi stands so far as the oldest archaeological settlement discovered in northeast Anatolia. Therefore, the faunal assemblage at Alaybeyi offers great opportunity to study the status of animals and their relationships with humans in the largely unexplored Kars-Erzurum plateau covering a period from the Chalcolithic to Late Iron Age. Taxonomic and osteometric analyses show that, like the present day, cattle were dominant over caprines, revealing extensive cattle pastoralism in the region for at least about 7 …
Genotyping Of Prolactin, Kappa Casein, And Pituitary Transcription Factor 1 Genes Of The Anatolian Water Buffalo Population In The Kızılırmak Delta, Emi̇ne Toparslan, Levent Mercan
Genotyping Of Prolactin, Kappa Casein, And Pituitary Transcription Factor 1 Genes Of The Anatolian Water Buffalo Population In The Kızılırmak Delta, Emi̇ne Toparslan, Levent Mercan
Turkish Journal of Veterinary & Animal Sciences
Thirty-five Anatolian water buffalo were selected from among a total of almost 7000 animals from 11 herds in the Kızılırmak Delta, which is known to be one of the most important areas for water buffalo farming in Turkey. The cleaved amplified polymorphic sequences (CAPS) method was used to identify single-nucleotide polymorphisms at 3 loci that are associated with milk production, namely PRL, CSN3, and PIT-1, which are associated with milk processing and milk yields, respectively. Sequence-tagged sites of PRL, CSN3, and PIT-1 were digested by restriction endonucleases RsaI, HindIII, and HinfI, respectively. Capillary electrophoretic analysis identified all samples as belonging …
The Effect Of Anesthetic (2-Phenoxyethanol) Application On Some Biochemical And Hematological Parameters In Russian Sturgeon (Acipenser Gueldenstaedtii) And Siberian Sturgeon (Acipenser Baerii) During Transport, Selçuk Duman
Turkish Journal of Veterinary & Animal Sciences
Experiments were carried out to determine the effect of 2-phenoxyethanol to reduce stress response during the transportation of Russian and Siberian sturgeons. In transportation experiment 1 (TE$_{1}$), Siberian sturgeons (687.2 ± 17.41 g) were stocked in tanks and transported for 90 min (stocking density = 65 ± 0.71 kg/$m^{3}$). Before transport, 0.5 mg/L 2-phenoxyethanol was applied to the first group (TE$_{1-A}$, n = 285) but not to the second group (TE$_{1-B}$, n = 287). In transportation experiment 2 (TE2), Russian sturgeons (1873 ± 159 g) were divided into two groups and stocked in tanks as they have a density of …
Risk And Protective Factors Associated With Gastrointestinal Parasites Of Dogs From An Urban Area Of Córdoba, Argentina, Carlos Eugenio Motta, Maria Romina Rivero, Carlos Daniel De Angelo, Ana María Sbaffo, Karina Ivana Tiranti
Risk And Protective Factors Associated With Gastrointestinal Parasites Of Dogs From An Urban Area Of Córdoba, Argentina, Carlos Eugenio Motta, Maria Romina Rivero, Carlos Daniel De Angelo, Ana María Sbaffo, Karina Ivana Tiranti
Turkish Journal of Veterinary & Animal Sciences
Prevalence of gastrointestinal (GI) parasites and the effect of associated factors were evaluated in household dogs from an urban area of Córdoba, Argentina. A total of 493 fecal samples were collected during 2010 and 2013 and processed with Willis` salt, Sheathers sugar flotation, and formol-ether concentration techniques. Overall prevalence of GI parasites was 45.23% (95% CI 40.83-49.62), and Ancylostoma caninum (30.83%) was the most frequent parasite, followed by Trichuris vulpis (9.94%), Cystoisospora spp. (7.71%), Toxocara canis (6.90%), and Giardia spp. (5.88%). Independent variables were presence of at least one parasite element, named "all parasites", and each GI parasite more frequently …
The Comparing Of Homogenization Methods For Oxidative And Antioxidative Analyses Of Sperm, Ömer Varişli, Numan Akyol
The Comparing Of Homogenization Methods For Oxidative And Antioxidative Analyses Of Sperm, Ömer Varişli, Numan Akyol
Turkish Journal of Veterinary & Animal Sciences
Pretreatment of sperm for oxidative and antioxidative analysis has been shown to be different in studies. These differences can affect the result of analyses. The aim of this study was to compare the analyses of sperm homogenization methods. The semen of four rams were used in the study. Pretreatment procedures included the rotary, bead, and ultrasonic homogenization methods. Oxidative and antioxidative status of sperm samples was assessed by measuring serum lipid hydroperoxide, total oxidant status, free sulfhydryl groups (SH total thiol), ceruloplasmin, and total antioxidant capacity levels. As a result, the homogenization methods before oxidative and antioxidative status analyses significantly …
Gonadotrophin Stimulation Of Ewes That Are Not Pregnant Following Multiple Matings During The Season, Şükrü Dursun
Gonadotrophin Stimulation Of Ewes That Are Not Pregnant Following Multiple Matings During The Season, Şükrü Dursun
Turkish Journal of Veterinary & Animal Sciences
In this study, the aim was to obtain pregnancy following synchronization and to increase profitability in ewes that did not become pregnant during the breeding season after at least 3 matings. Nonpregnant Middle Anatolian Merino ewes (n = 117) were given a progesterone sponge for 9 days. At the time of sponge removal, the ewes received 250 IU pregnant mare serum gonadotropin (PMSG) + 125 µg prostaglandin F2α (PGF2α). Two days later, they were injected with either human chorionic gonadotropin (hCG) (Group I, n = 48) or gonadotropin-releasing hormone (GnRH) (Group II, n = 43), or remained as a control …
Combination Of Amylopectin And Chromium Form Improves Energy Storage And Reduces Muscle Fatigue In Rats During Exhaustive Exercise, Mehmet Irmak, Nurhan Şahi̇n, Cemal Orhan, Mehmet Tuzcu, Patrick Brice Defo Deeh, Meltem Yardim, Armağan Hayirli, James Komorowski, Kazi̇m Şahi̇n
Combination Of Amylopectin And Chromium Form Improves Energy Storage And Reduces Muscle Fatigue In Rats During Exhaustive Exercise, Mehmet Irmak, Nurhan Şahi̇n, Cemal Orhan, Mehmet Tuzcu, Patrick Brice Defo Deeh, Meltem Yardim, Armağan Hayirli, James Komorowski, Kazi̇m Şahi̇n
Turkish Journal of Veterinary & Animal Sciences
This study evaluated the effects of amylopectin (A) and chromium (Cr) forms alone or in combination on energy storage, muscle fatigue-related biochemical markers, and expression of peroxisome proliferator-activated receptors (PPAR-γ) and glucose transporter-2 and -4 (GLUT-2 and GLUT-4) in rats during exhaustive exercise. Thirty-five male Wistar rats were divided into 5 groups (n = 7) as follows: 1) exhaustive exercise (E); 2) E+A; 3) E+A+chromium picolinate (CrPic); 4) E+A+chromium histidinate (CrHis), and 5) E+A+CrPic+CrHis. Rats received 0.0316 g of amylopectin and 11.06 µg of elemental Cr kg$^{-1}$ body weight given as CrPic and CrHis per day. The mean duration of …
The Investigation Of Viability And Body Measurements For Water Buffalo Calves, Koray Çeli̇keloğlu, Serdar Koçak, Meti̇n Erdoğan, Zehra Bozkurt, Mustafa Tekerli̇
The Investigation Of Viability And Body Measurements For Water Buffalo Calves, Koray Çeli̇keloğlu, Serdar Koçak, Meti̇n Erdoğan, Zehra Bozkurt, Mustafa Tekerli̇
Turkish Journal of Veterinary & Animal Sciences
The viability and body measurements of calves raised in the Livestock Research Center of Afyon Kocatepe University between 2008 and 2011 were investigated. The research was conducted on 188 calves of buffalo cows brought from different regions of Turkey. The viability of buffalo calves at 1, 3, 6, and 12 months of age was 0.95, 0.90, 0.90, and 0.89, respectively. Live weights, height at withers, rump height, body length, chest depth, chest width, rump width, and chest and cannon-bone circumferences were 30.41 kg and 72.37, 74.21, 56.52, 26.34, 15.80, 17.00, 73.13, and 12.88 cm at birth; 118.47 kg and 97.12, …
Investigation Of The Effect Of Repeated Use Of Privd On Serum Progesterone, Estrogen Levels, And Ovulatory Follicle Diameter In Pubertal Heifers, Armağan Çolak, Muhammad Furqan Asghar Chacher, Mehmet Cengi̇z, Armağan Hayirli
Investigation Of The Effect Of Repeated Use Of Privd On Serum Progesterone, Estrogen Levels, And Ovulatory Follicle Diameter In Pubertal Heifers, Armağan Çolak, Muhammad Furqan Asghar Chacher, Mehmet Cengi̇z, Armağan Hayirli
Turkish Journal of Veterinary & Animal Sciences
The purpose of this study was to evaluate the effect of reuse of progesterone-releasing intravaginal devices (PRIVDs) on serum progesterone, estrogen levels, and ovulatory follicle diameter in pubertal heifers. Three pubertal Holstein heifers were used in the study for three different periods with the usage of three PRIVDs up to three times from day 0 to 7 according to the Latin square model. Blood samples were collected on days 0, 3, 5, 7, and 9 for hormonal analysis. Ovulatory follicle diameter was measured by transrectal ultrasonography 60 h after removal of the PRIVD. Serum progesterone demonstrated a significant relationship with …
Phylogrouping And Antimicrobial Resistance Analysis Of Extraintestinal Pathogenic Escherichia Coli Isolated From Poultry Species, Sujata Bhave, Rahul Kolhe, Ranjan Mahadevaswamy, Chandrakant Bhong, Samir Jadhav, Saba Nalband, Dattatray Gandhale, Dushyant Muglikar
Phylogrouping And Antimicrobial Resistance Analysis Of Extraintestinal Pathogenic Escherichia Coli Isolated From Poultry Species, Sujata Bhave, Rahul Kolhe, Ranjan Mahadevaswamy, Chandrakant Bhong, Samir Jadhav, Saba Nalband, Dattatray Gandhale, Dushyant Muglikar
Turkish Journal of Veterinary & Animal Sciences
This study was undertaken to determine the prevalence and antimicrobial resistance pattern of extraintestinal pathogenic Escherichia coli (ExPEC) in the feces of healthy poultry and retail chicken. All 146 E. coli recovered from 351 samples were screened by PCR for detection of ExPEC strains. Nineteen (13.01%) isolates were confirmed as ExPEC. Distribution of ExPEC strains was revealed as follows: broiler (25%), layer (15.87%), and raw chicken (3.12%). Turkey, duck, and water samples were negative for ExPEC strains. ExPEC strains belonged to phylogenetic groups B2 (52.63%), A (36.84%), and D (10.53%). Twenty-three (15.75%) isolates were ESBL-positive, including four ExPEC strains. ESBL-positive …
Polymorphisms Of Exon 10 In The Bpi Gene And Its Association Analysis With Some Reproductive Traits And Partial Immune Indexes In Meishan Pigs, Huan Qu, Zongyou Wei, Lan Ye, Shenglong Wu, Wenbin Bao
Polymorphisms Of Exon 10 In The Bpi Gene And Its Association Analysis With Some Reproductive Traits And Partial Immune Indexes In Meishan Pigs, Huan Qu, Zongyou Wei, Lan Ye, Shenglong Wu, Wenbin Bao
Turkish Journal of Veterinary & Animal Sciences
This study was conducted to detect polymorphisms of BPI gene exon 10 by PCR-RFLP in Meishan pigs and their associations with some important cytokine levels (IL-1ß, IL-4, IL-6, IL-8, IL-10, TGF-1ß, IFN-γ, TNF-α) and reproductive traits (total number born (TNB), number born alive (NBA), birth litter weight (BLW), and weaning litter weight (WLW)), with the aim of identifying effective genetic markers for molecular breeding. The results revealed three genotypes, including AA, AB, and BB, with the trend of AA > BB > AB in reproductive traits. Pigs with the AA genotype were significantly higher than the AB genotype in TNB and IFN-γ …
First Evidence Of Holocrine Secretory Mechanism In Granular Ducts Inmouse Mandibular Gland, Bianca Matosz, Flavia Ruxanda, Cristian Ratiu, Vlad Luca, Vasile Rus, Viorel Miclaus
First Evidence Of Holocrine Secretory Mechanism In Granular Ducts Inmouse Mandibular Gland, Bianca Matosz, Flavia Ruxanda, Cristian Ratiu, Vlad Luca, Vasile Rus, Viorel Miclaus
Turkish Journal of Veterinary & Animal Sciences
The mouse mandibular gland contains granular ducts, which possess a particular structure. They are termed granular ducts because they contain numerous granules in the cells lining them, having a secretory activity. We aimed to assess the secretory mechanism in granular ducts. Consequently, we harvested the mandibular glands from five male mice and processed them for histological investigations. A large number of cells appeared intact, without obvious distortions or disruptions in the cell membrane. Based on the morphological aspect, these cells either transferred the secretory product through exocytosis or were in "standby" mode. There were cells that presented prominent bulges of …
Diagnosis Of Postretinal Blindness Caused By Intracranial Disease In Three Dogs, Joon Young Kim
Diagnosis Of Postretinal Blindness Caused By Intracranial Disease In Three Dogs, Joon Young Kim
Turkish Journal of Veterinary & Animal Sciences
In this report, we provide clinical information on the diagnosis of postretinal blindness in veterinary ophthalmology. We have diagnosed three dogs with postretinal blindness (bilateral in one case and in the left eye in two cases). The electroretinogram results were normal and the optic axis was relatively clear in all cases. Our findings indicate that the reason for the blindness in these dogs was an intracranial lesion. Fundus photography did not reveal any significant changes, except in the optic disc. A normal optic disc, an optic disc that appeared to be smaller than that in the other eye, and a …
Quantifying Coat Color Phenology Of Sympatric Snowshoe Hares And Weasels, Brandon Murray Davis
Quantifying Coat Color Phenology Of Sympatric Snowshoe Hares And Weasels, Brandon Murray Davis
Graduate Student Theses, Dissertations, & Professional Papers
No abstract provided.
Akt Expression And Lactose Synthesis During Heat Exposure In Saanen Goat, Nungnuch Saipin
Akt Expression And Lactose Synthesis During Heat Exposure In Saanen Goat, Nungnuch Saipin
Chulalongkorn University Theses and Dissertations (Chula ETD)
In tropical countries, high ambient temperature (HTa) is a fundamental factor that cause a decline in the mammary gland function in dairy animals. Dairy animals fed under HTa decreased milk yield (MY) as well as milk compositions. The current study focuses on the effect of HTa to decrease milk synthesis from natural and in vitro HTa condition. The first experiment was performed to investigate the effect of HTa from the natural condition in early lactating Saanen goat, 2-4 weeks of postpartum (2 PP-4 PP). Five animals were investigated during the winter season as control ambient condition. Six animals as the …
The Left Ventricular Functions And Heart Rate Variability In Dogs With Pulmonic Valvular Stenosis, Ploypanut Trikhun
The Left Ventricular Functions And Heart Rate Variability In Dogs With Pulmonic Valvular Stenosis, Ploypanut Trikhun
Chulalongkorn University Theses and Dissertations (Chula ETD)
Pulmonic valvular stenosis (PS) is one of the most common congenital heart diseases in dogs that can lead to the cardiac maladaptation. Also, PS can affect the cardiac autonomic nervous system (ANS). However, clinical information regarding to systolic function and cardiac ANS alteration in PS dogs had not been fully elucidated. The objectives of this study were to evaluate cardiac electrical property, left ventricular (LV) function, and to assess cardiac ANS from heart rate variability (HRV) analysis in PS dogs compared with healthy dogs. The dogs in this study were divided into 2 groups, PS dogs (n=13) and healthy control …
Black Bear Use Of Forest Roads In Western Washington, Gary W. Witmer
Black Bear Use Of Forest Roads In Western Washington, Gary W. Witmer
United States Department of Agriculture Wildlife Services: Staff Publications
Radiolocations (108) of 20 black bears were used to assess use or avoidance of 3 forest road types in western Washington. Distances of bears to each type of road were compared to distances of 108 random points using t-tests. Females and males avoided 2-lane roads, while only males avoided 1-lane roads, the most common road type in the area. Females, but not males, were located closer to overgrown, spur roads than expected. This road type has substantial cover of grasses, forbs, and berry-producing shrubs along with protective tree cover. This situation may provide easy travel for females along with security …
No Detection Of Brodifacoum Residues In The Marine And Terrestrial Food Web Three Years After Rat Eradication At Palmyra Atoll, Central Pacific, A. Wegmann, G. Howald, S. Kropidlowski, N. Holmes, A.B. Shiels
No Detection Of Brodifacoum Residues In The Marine And Terrestrial Food Web Three Years After Rat Eradication At Palmyra Atoll, Central Pacific, A. Wegmann, G. Howald, S. Kropidlowski, N. Holmes, A.B. Shiels
United States Department of Agriculture Wildlife Services: Staff Publications
Invasive alien species represent one of the greatest threats to native plants and animals on islands. Rats (Rattus spp.) have invaded most of the world’s oceanic islands, causing lasting or irreversible damage to ecosystems and biodiversity. To counter this threat, techniques to eradicate invasive rats from islands have been developed and applied across the globe. Eradication of alien rats from large or complex island ecosystems has only been successful with the use of bait containing a rodenticide. While effective at eradicating rats from islands, rodenticide can persist in the ecosystem longer than the time required to eradicate the target rat …
Home Range And Habitat Use Of West Virginia Canis Latrans (Coyote), Lauren M. Mastro, Dana J. Morin, Eric M. Gese
Home Range And Habitat Use Of West Virginia Canis Latrans (Coyote), Lauren M. Mastro, Dana J. Morin, Eric M. Gese
United States Department of Agriculture Wildlife Services: Staff Publications
Canis latrans (Coyote) has undergone a range expansion in the United States over the last century. As a highly opportunistic species, its home range and habitat use changes with ecological context. Coyotes were first reported in West Virginia in 1950 but were not commonly observed until the 1990s, and there is scant information on Coyotes in the region. We used telemetry data from 8 radiocollared Coyotes in West Virginia to estimate home-range size and third-order habitat selection. Home-range areas (95% utilization distributions; UDs) varied from 5.22 to 27.79 km2 (mean = 12.48 ± 2.61 km2), with highly concentrated use of …
Carrion Availability In Space And Time, Marcos Moleón, Nuria Selva, David M. Bailey, David M. Bailey, Ainara Cortés-Avizanda, Travis L. Devault
Carrion Availability In Space And Time, Marcos Moleón, Nuria Selva, David M. Bailey, David M. Bailey, Ainara Cortés-Avizanda, Travis L. Devault
United States Department of Agriculture Wildlife Services: Staff Publications
Introduction
Availability of carrion to scavengers is a central issue in carrion ecology and management, and is crucial for understanding the evolution of scavenging behaviour. Compared to live animals, their carcasses are relatively unpredictable in space and time in natural conditions, with a few exceptions (see below, especially Sect. “Carrion Exchange at the Terrestrial-Aquatic Interface”). Carrion is also an ephemeral food resource due to the action of a plethora of consumers, from microorganisms to large vertebrates, as well as to desiccation (i.e., loss of water content; DeVault et al. 2003; Beasley et al. 2012; Barton et al. 2013; Moleón et …
Ecological Functions Of Vertebrate Scavenging, James C. Beasley, Zachary H. Olson, Nuria Selva, Travis L. Devault
Ecological Functions Of Vertebrate Scavenging, James C. Beasley, Zachary H. Olson, Nuria Selva, Travis L. Devault
United States Department of Agriculture Wildlife Services: Staff Publications
Introduction
The role of vertebrate scavenging in food web dynamics has historically been minimalized and portrayed as the activity of a select group of obligate scavengers (e.g., vultures), with a simplistic linkage between carrion and detritivores in food webs. Research in the last few decades, however, has revealed that the role of carrion in food web dynamics is severely underestimated, highly complex, and pervasive among ecosystems across the globe (DeVault et al. 2003; Selva and Fortuna 2007; Wilson and Wolkovich 2011). Such observations have led to a surge in research interest in scavenging ecology that continues to reveal new information …
Locally Fixed Alleles: A Method To Localize Gene Drive To Island Populations, Jaye Sudweeks, Brandon Hollingsworth, Dimitri V. Blondel, Karl J. Campbell, Sumit Dhole, John D. Eisemann, Owain Edwards, John Godwin, Gregg R. Howald, Kevin P. Oh, Antoinette J. Piaggio, Thomas A.A. Prowse, Joshua V. Ross, J. Royden Saah, Aaron B. Shiels, Paul Q. Thomas, David W. Threadgill, Michael R. Vella, Fred Gould, Alun L. Lloyd
Locally Fixed Alleles: A Method To Localize Gene Drive To Island Populations, Jaye Sudweeks, Brandon Hollingsworth, Dimitri V. Blondel, Karl J. Campbell, Sumit Dhole, John D. Eisemann, Owain Edwards, John Godwin, Gregg R. Howald, Kevin P. Oh, Antoinette J. Piaggio, Thomas A.A. Prowse, Joshua V. Ross, J. Royden Saah, Aaron B. Shiels, Paul Q. Thomas, David W. Threadgill, Michael R. Vella, Fred Gould, Alun L. Lloyd
United States Department of Agriculture Wildlife Services: Staff Publications
Invasive species pose a major threat to biodiversity on islands. While successes have been achieved using traditional removal methods, such as toxicants aimed at rodents, these approaches have limitations and various off-target effects on island ecosystems. Gene drive technologies designed to eliminate a population provide an alternative approach, but the potential for drive-bearing individuals to escape from the target release area and impact populations elsewhere is a major concern. Here we propose the “Locally Fixed Alleles” approach as a novel means for localizing elimination by a drive to an island population that exhibits significant genetic isolation from neighboring populations. Our …
Comparing Live-Capture Methods For Nutria: Single- Versus Multiple-Capture Cage Traps, Trevor R. Sheffels, Mark D. Sytsma, Jacoby Carter, Jimmy D. Taylor
Comparing Live-Capture Methods For Nutria: Single- Versus Multiple-Capture Cage Traps, Trevor R. Sheffels, Mark D. Sytsma, Jacoby Carter, Jimmy D. Taylor
United States Department of Agriculture Wildlife Services: Staff Publications
Herbivory and burrowing by nutria (Myocastor coypus) cause substantial ecological and economic damage. Trapping is a common, effective practice for reducing nutria damage; however, trapping approaches must continually be adapted to keep pace with evolving animal welfare and ethical issues and to more effectively target pest species of interest. Our objective was to evaluate the efficacy of 2 nonlethal trap types for nutria: single-capture (SCT) and multi-capture (MCT) cage traps. We established 3 MCTs and 3 SCTs at each of 7 sites on a 10,500-ha mixed-use island located 15 km northwest of Portland, Oregon, USA. We pre-baited using carrots, apples, …
Biology And Impacts Of Pacific Island Invasive Species. 15. Psittacula Krameri, The Rose-Ringed Parakeet (Psittaciformes: Psittacidae)1, Aaron B. Shiels, Nicholas P. Kalodimos
Biology And Impacts Of Pacific Island Invasive Species. 15. Psittacula Krameri, The Rose-Ringed Parakeet (Psittaciformes: Psittacidae)1, Aaron B. Shiels, Nicholas P. Kalodimos
United States Department of Agriculture Wildlife Services: Staff Publications
The rose-ringed parakeet (RRP), Psittacula krameri, has become established in at least four Pacific Island countries (Hong Kong China, Japan, New Zealand, U.S.A.), including the Hawaiian islands of Kaua‘i, O‘ahu, and Hawai‘i. Most Pacific islands are at risk of RRP colonization. This species was first introduced to Hong Kong in 1903 and Hawai‘i in the 1930s–1960s, established since 1969 in Japan, and in New Zealand since 2005 where it has repeatedly established after organized removals. The founding birds were imported cage-birds from the pet trade. In native India, RRP are generally found associated with human habitation and are considered a …
Using Dna To Identify The Source Of Invasive Mongooses, Herpestes Auropunctatus (Carnivora: Herpestidae) Captured On Kaua‘I, Hawaiian Islands, Darren J. Wostenberg, Matthew W. Hopken, Aaron B. Shiels, Antoinette J. Piaggio
Using Dna To Identify The Source Of Invasive Mongooses, Herpestes Auropunctatus (Carnivora: Herpestidae) Captured On Kaua‘I, Hawaiian Islands, Darren J. Wostenberg, Matthew W. Hopken, Aaron B. Shiels, Antoinette J. Piaggio
United States Department of Agriculture Wildlife Services: Staff Publications
Two small Indian mongooses (Herpestes auropunctatus) were live-captured in 2012 at separate locations on the Hawaiian Island of Kaua'i, which was previously considered to be free of this invasive species. Genotypes from these two individuals were compared to genotypes of H. auropunctatus from the islands of Hawai'i (n =39), O'ahu (n =91), Maui (n = 39), and Moloka'i (n = 19) to determine the island of origin of the Kaua'i individuals. Genotypes were generated from each individual using five microsatellite loci. Genetic clustering was estimated by Bayesian inference of spatial clustering of individuals and …
Cause‐Specific Mortality Of The World’S Terrestrial Vertebrates, Jacob E. Hill, Travis L. Devault, Jerrold L. Belant
Cause‐Specific Mortality Of The World’S Terrestrial Vertebrates, Jacob E. Hill, Travis L. Devault, Jerrold L. Belant
United States Department of Agriculture Wildlife Services: Staff Publications
Aim: Vertebrates are declining worldwide, yet a comprehensive examination of the sources of mortality is lacking. We conducted a global synthesis of terrestrial vertebrate cause‐specific mortality to compare the sources of mortality across taxa and determine predictors of susceptibility to these sources of mortality.
Location: Worldwide.
Time period: 1970–2018.
Major taxa studied: Mammals, birds, reptiles and amphibians.
Methods: We searched for studies that used telemetry to determine the cause of death of terrestrial vertebrates. We determined whether each mortality was caused by anthropogenic or natural sources and further classified mortalities within these two categories (e.g. harvest, vehicle collision and predation). …