bluuebunny/crossref_metadata_2025_split huggingface dataset:
Creel Survey Methods to Assess Catch, Loss, and Capture Frequency of White Sturgeon in the Snake River, Idaho
Authors: Kozfkay Joseph R. , Dillon Jeff C. 
Published: February 2011

Abstract
Mandatory catch-and-release regulations for white sturgeon Acipenser transmontanus have been used to protect small populations from excessive fishing-related mortality. However, these regulations only remain effective if the combined magnitude of capture and probability of mortality per capture remains at some unknown, relatively low level. We conducted a roving-access creel survey supplemented with report cards to gather information as a first step in determining whether fishing-related mortality rates are sustainable in one popular Idaho fishery. Survey objectives were to estimate effort, catch rate, loss rate, and to estimate total catch and loss over a 1-year period on the C. J. Strike reach of the Snake River. During May 2007 through April 2008, angler counts indicated that 35,062 h were expended in this reach (89% by bank anglers; 11% by boat anglers). Catch rate for bank anglers averaged 0.048 ± 0.004 fish/h (mean ± 90% confidence interval), whereas loss rate averaged 0.064 ± 0.004 fish/h. Boat anglers had higher catch rates and were more efficient at landing hooked white sturgeon. The lack of difference in catch or loss rates computed from on-site interviews, report cards, or follow-up phone surveys suggested that there was no bias associated with methods used to collect completed trip information. Based on expansion of these estimates, we calculated that anglers hooked and fought white sturgeon 4,361 times, with 1,996 landings (46%) and 2,365 losses (54%). Using the most recent population estimate, on average, a white sturgeon in this reach was hooked 7.7 times during 1 year, including being landed 3.5 times and lost an additional 4.2 times. The use of supplementary report cards improved precision of catch and loss rate estimates by increasing sample size. Our observations suggest that this method was an unbiased, cost-efficient method for acquiring completed trip information for a difficult-to-monitor white sturgeon fishery and may be useful for similar fisheries.
Effects of Hurricanes Katrina and Rita on Sport Fish Community Abundance in the Eastern Atchafalaya River Basin, Louisiana
Authors: Perret Alexander J. , Kaller Michael D. , Kelso William E. , Rutherford D. Allen 
Published: February 2011

Abstract
The Atchafalaya River basin (ARB), a 5,000-km2 river–floodplain system in south-central Louisiana, provides one of the most popular fisheries in the state for anglers pursuing bass Micropterus spp., sunfishes Lepomis spp., crappies Pomoxis spp., and catfishes Ictalurus spp. Hurricanes Katrina and Rita struck in August and September 2005, resulting in tremendous changes in habitat and water quality in the ARB. Although the short-term and long-term impacts of these storms on this floodplain ecosystem remain poorly understood, a long-term fish and water quality monitoring program has provided data with which to analyze sport fish abundance in the eastern ARB 2 years before and 2 years after the hurricanes. The results of this analysis suggest that location within the basin influenced the effect of the hurricanes on sport fish abundance and that overall sport fish catch per unit effort (CPUE) decreased after the hurricanes. Within the study area, sunfishes in Bayou Postillion, bass and sunfishes in Murphy Lake, and sunfishes in Bayou Sorrel all exhibited lower CPUE after the hurricanes. We believe that our CPUE data reflect changes in the abundance of ARB sport fish, and our analyses suggest that these populations, particularly those of sunfishes, declined significantly and remained suppressed for at least 2 years after the hurricanes.
Movement and Microhabitat Associations of Guadalupe Bass in Two Texas Rivers
Authors: Perkin Joshuah S. , Shattuck Zachary R. , Bean Preston T. , Bonner Timothy H. , Saraeva Ekaterina , Hardy Thomas B. 
Published: February 2011

Abstract
The Guadalupe bass Micropterus treculii is endemic to Texas and is threatened by introgression with introduced smallmouth bass M. dolomieu as well as habitat degradation. This study described and quantified the movements and habitat associations of Guadalupe bass to assess the factors that may influence current populations. Radio-tagged adult Guadalupe bass were tracked in the Pedernales River (n = 12) and South Llano River (n = 12) from January through August 2008. Available microhabitats were measured and modeled in terms of depth, velocity, substrate, and cover for about 1.5 km in the Pedernales River and 1.2 km in the South Llano River. Rates of movement were greatest during the reproductive season, ranging from less than 1 to 9 m/d. Instream cover (such as undercut banks and woody debris) was preferred during daylight hours throughout the study period, although the distances from cover increased from January to August. Habitat shifts from cover to open water occurred at night and from woody structures to boulders and ledges during a large flood pulse. The habitats most suitable for adult Guadalupe bass had a depth of 1.0 m and a current velocity of 0.05 m/s, and habitat selection was strongest for eddy mesohabitats with smaller substrates. By July, the Guadalupe bass in the South Llano River were associated with runs with greater current velocities, whereas those in the Pedernales River were associated with pools with greater depths, largely owing to the low flows and reduced habitat availability in the Pedernales River. Environmental factors, including the availability and suitability of instream cover, are probably the strongest influences on the distribution and abundance of Guadalupe bass.
Lake Sturgeon Population Status and Demography in the Kettle River, Minnesota, 1992–2007
Authors: Dieterman Douglas J. , Frank John , Painovich Nate , Staples David F. 
Published: February 2011

Abstract
We assessed population status and estimated selected demographic parameters for lake sturgeon Acipenser fulvescens in the Kettle River, Minnesota, using capture–recapture tagging data collected from 1992 to 2007. The lake sturgeon is an imperiled species of special concern in Minnesota, with population declines attributed to overfishing, pollution, and establishment of dams. In 1995, the recreational fishery was closed and the only dam on the Kettle River (Sandstone Dam) was removed, in part to promote lake sturgeon recovery. Recent incidental capture of lake sturgeon by anglers is prompting interest in re-opening the recreational fishery. We gathered information to determine (1) status and demography of the Kettle River population, (2) the effect of dam removal, and (3) the feasibility of re-opening the recreational fishery. Open-population capture–recapture models were used to examine population status and estimate survival, seniority, and the relative importance of survival and recruitment for influencing population trends. The rate of population change (λ) indicated that the population was barely maintaining itself (average λ across years = 1.02; 95% confidence interval [CI] = 0.86–1.16). Annual population estimates ranged from about 130 fish to almost 300 fish but had wide CIs. Similarly, estimates of new lake sturgeon entering the population each year (either from within-population recruitment or immigration) were variable and ranged from 0 to over 100. Annual survival was nearly constant at about 80%. Growth was slow relative to other populations but averaged about 28 mm/year for ages 6–21. A seniority parameter indicated that 49–87% of individuals in the population in a given year consisted of population members that survived from the previous year. This suggested that the population was essentially maintaining itself through a combination of episodic recruitment and relatively constant survival. Recent low recruitment may be due to a short-term disturbance from sediment released when the dam was removed in 1995. Maintaining closure of the recreational fishery still appears necessary. Bolstering of recruitment may be needed to increase the population. Full recovery will require patience for this long-lived, late-maturing, infrequently reproducing species.
Survival of Shovelnose Sturgeon after Abdominally Invasive Endoscopic Evaluation
Authors: Trested Drew G. , Goforth Reuben , Kirk James P. , Isely J. Jeffery 
Published: February 2011

Abstract
The development of effective and minimally invasive techniques to determine gender and gonad developmental stage is particularly important in performing accurate fisheries assessments for use in conservation and restoration. The initial and latent survival of shovelnose sturgeon Scaphirhynchus platorynchus was assessed after exposure to a modified endoscopic technique designed to collect that biological information. Rather than inserting the endoscope through the urogenital canal or directly into the body cavity, we inserted a threaded trocar through a ventral incision and used a low-pressure air supply attached to the trocar to gently insufflate the body cavity. The initial survival of both experimental and control shovelnose sturgeon was 100%. Latent survival was 100% and 90% for the experimental and control fish, respectively. Our study suggests that incision endoscopy coupled with insufflation of the body cavity through the use of a trocar and an air supply is a safe and effective way to determine gender and examine the gonad developmental stage of shovelnose sturgeon. The short duration of the procedure and the high postprocedure survival suggest that this technique is suitable for shovelnose sturgeon and perhaps for the evaluation of other endangered fish species (e.g., pallid sturgeon S. alba) as well.
Effects of a Conservative Rock Bass Length Limit on Angler Participation, Sport Fish Populations, and Crayfish Prey in a Missouri Ozark Stream
Authors: Roell Michael J. , DiStefano Robert J. 
Published: February 2011

Abstract
Rock bass Ambloplites rupestris are popular with anglers in Missouri Ozark streams, second only to smallmouth bass Micropterus dolomieu. Historically, fishery biologists emphasized the management of smallmouth bass, but in the late 1980s they sought higher-quality rock bass fisheries and thus the information needed to recommend harvest regulations. Using a conservative minimum length limit of 230 mm (9 in) total length (TL) in a heavily exploited rock bass fishery in the Big Piney River, Missouri, we assessed the direct and indirect effects on angler participation and attitudes (by means of an angler survey), the abundance (mark–recapture analysis) and growth rates (scale analysis) of rock bass and smallmouth bass, sport fish predation on crayfishes (order Decapoda; diet analysis), and crayfish densities (stratified quadrat sampling). These measures were evaluated for 3 years (1992–1994) before the length limit was imposed and for 6 years afterward (1995–2000) on a 17.1-km-long regulation section and a 10.4-km-long reference section. Our results indicate that the length limit (1) had substantial angler support, as shown by their attitudes and compliance with the regulation; (2) reduced the hours fished by rock bass anglers, smallmouth bass anglers, and all anglers; (3) increased the abundances of larger rock bass and smallmouth bass substantially; (4) did not reduce the growth rates of rock bass or smallmouth bass; (5) did not proportionally reduce the predation on crayfishes or increase the percentage of empty stomachs; and (6) did not reduce the densities of crayfishes. After a review of the options for long-term management, fishery administrators and managers elected to manage Big Piney River rock bass with a minimum-TL regulation of 205 mm (8 in) on 124 km of river. Managers on five other rivers (one with shadow bass A. ariommus) have done likewise on an additional 448 km, and the outcomes of these decisions are currently being monitored on all six rivers.
Changes to the Productivity and Trophic Structure of a Sockeye Salmon Rearing Lake in British Columbia
Authors: Brahney Janice , Routledge Richard , Bos Darren G. , Pellatt Marlow G. 
Published: February 2011

Abstract
In the 1990s, the returns of sockeye salmon Oncorhynchus nerka to Long Lake in Smith Inlet, British Columbia, declined substantially. In 1997 the commercial fishery was closed, and it will not be reopened until the population shows signs of sustained recovery. We examined paleolimnological and geochemical variables from a sediment core extracted from Long Lake in 2002. The nitrogen isotope concentration (δ15N), which is associated with salmon production, declined to unprecedented levels in the 20th century. Sodium and other alkali elements have also decreased at a generally accelerating pace since the mid-19th century, and there are indications that the headwater glacier has receded apace. Accompanying these trends were notable changes in proxies for lake ecology, including the size and abundance of planktonic invertebrates. The timing and behavior of these unprecedented changes in the sedimentary record point to potential impacts from both commercial fishing and climate change.
Biomechanical Behavior of Oral Soft Tissues
Authors: Goktas Selda , Dmytryk John J. , McFetridge Peter S. 
Published: February 2011

Background: Little attention has been given to understanding the variation in biomechanical behavior of oral soft tissues, and this represents an obstacle for the development of biomaterials that perform with appropriate biomechanical characteristics. With this as our motivation, a uniaxial mechanical analysis was performed on lingual and buccal aspects of the attached gingiva, alveolar mucosa, and buccal mucosa to gain insight into human tissue performance and site‐specific mechanical variation.Methods: A discrete quantitative mechanical evaluation of each soft tissue region using tensile, dynamic compression, and stress relaxation analysis was conducted to correlate tissue structure with function as assessed histologically.Results: Results confirm the keratinized gingiva to have increased tensile strength (3.94 ± 1.19 MPa) and stiffness (Young modulus of 19.75 ± 6.20 MPa) relative to non‐keratinized mucosal regions, where densely arranged elastin fibers contribute to a tissue with increased viscoelastic properties. Dynamic compression analysis indicated the instantaneous modulus (Eint), steady modulus (Es), and peak stress increased with loading frequency and strain amplitude, with the highest values found in the buccal attached gingiva.Conclusion: These investigations quantify the biomechanical properties of oral soft tissues and show region‐to‐region variation that details structure–function relationships and provides key parameters to aid development of biomaterials that perform with appropriate biomechanical properties.
Attachment Formation After Transplantation of Teeth Cultured With Enamel Matrix Derivative in Dogs
Authors: Saito Akira , Saito Emiko , Yoshimura Yoshitaka , Takahashi Dairo , Handa Ryohei , Honma Yoshiyuki , Ohata Noboru 
Published: February 2011

Background: Implantation of cultured cells may be applied for periodontal regeneration in the future. However, a donor is essential in each case and tooth extraction is required to obtain the periodontal ligament–derived cell. We developed a novel regenerative technique combining tissue culture and transplantation of teeth. The purpose of this study is to evaluate the effect of enamel matrix derivative (EMD) on periodontal healing using this technique in dogs.Methods: A total of 32 incisors from seven beagle dogs were used. The periodontal ligament and cementum 5 mm from the coronal part of the roots were removed, whereas those in the apical part were preserved. Teeth were transplanted after the following treatments: 1) culture with application of EMD to the root surface for 6 weeks (n = 11); 2) culture without application of EMD for 6 weeks (n = 11); and 3) immediately transplanted without culture as control (n = 10). Eight weeks after transplantation, periodontal healing was analyzed.Results: The downgrowth of junctional epithelium on the roots of the EMD and culture groups was significantly smaller than that in the control group (P <0.01). Most of the root‐planed surfaces in the EMD group were covered with new cementum (72.2% ± 8.6%). This was significantly greater than that in the culture (29.1% ± 22.9%) and control groups (0.3% ± 1.1%).Conclusions: Transplantation of tissue‐cultured teeth decreased epithelial downgrowth and increased connective tissue attachment on the root‐planed surface. Furthermore, EMD could remarkably increase the new connective tissue attachment in this periodontal regenerative technique.
Interleukin‐10 Genotypes of the −1087 Single Nucleotide Polymorphism Influence Sp1 Expression in Periodontitis Lesions
Authors: Larsson Lena , Thorbert‐Mros Sara , Rymo Lars , Berglundh Tord 
Published: February 2011

Background: Interleukin (IL)‐10 is an important cytokine in immune regulation, and the −1087 IL‐10 single nucleotide polymorphism (SNP) is associated with chronic periodontitis. The binding of the transcription factor Sp1 to the −1087 position in the IL‐10 promoter upregulates IL‐10 gene expression, especially in patients with the GG genotype. A correlation between the −1087 GG genotype and high IL‐10 and Sp1 gene expressions was found.Methods: Twenty‐five individuals with severe generalized chronic periodontitis were genotyped for the −1087 IL‐10 gene polymorphism. SV40 promoter factor 1/specificity protein 1 (Sp1) and IL‐10 mRNA were analyzed using a real‐time polymerase chain reaction. The amount of Sp1‐positive cells and Sp1‐positive B cells, as well as the amount of Sp1 protein, in periodontitis lesions were assessed using immunohistochemistry and an in situ proximity ligation assay.Results: The mRNA expression of Sp1 and IL‐10 in patients with the GG genotype was four times higher than that in patients with the AA genotype. Proportions of Sp1‐positive cells overall and Sp1‐positive B cells were larger in patients with the GG genotype than in patients with the AA genotype.Conclusion: The transcription factor Sp1 was present in large amounts in periodontitis lesions, and the local expression of Sp1 was related to the −1087 IL‐10 SNP.
Insulin Resistance Impairs Circulating Angiogenic Progenitor Cell Function and Delays Endothelial Regeneration
Authors: Kahn Matthew B. , Yuldasheva Nadira Y. , Cubbon Richard M. , Smith Jessica , Rashid Sheikh T. , Viswambharan Hema , Imrie Helen , Abbas Afroze , Rajwani Adil , Aziz Amir , Baliga Vivek , Sukumar Piruthivi , Gage Matthew , Kearney Mark T. , Wheatcroft Stephen B. 
Published: February 2011

OBJECTIVE
Circulating angiogenic progenitor cells (APCs) participate in endothelial repair after arterial injury. Type 2 diabetes is associated with fewer circulating APCs, APC dysfunction, and impaired endothelial repair. We set out to determine whether insulin resistance adversely affects APCs and endothelial regeneration.

RESEARCH DESIGN AND METHODS
We quantified APCs and assessed APC mobilization and function in mice hemizygous for knockout of the insulin receptor (IRKO) and wild-type (WT) littermate controls. Endothelial regeneration after femoral artery wire injury was also quantified after APC transfusion.

RESULTS
IRKO mice, although glucose tolerant, had fewer circulating Sca-1+/Flk-1+ APCs than WT mice. Culture of mononuclear cells demonstrated that IRKO mice had fewer APCs in peripheral blood, but not in bone marrow or spleen, suggestive of a mobilization defect. Defective vascular endothelial growth factor–stimulated APC mobilization was confirmed in IRKO mice, consistent with reduced endothelial nitric oxide synthase (eNOS) expression in bone marrow and impaired vascular eNOS activity. Paracrine angiogenic activity of APCs from IRKO mice was impaired compared with those from WT animals. Endothelial regeneration of the femoral artery after denuding wire injury was delayed in IRKO mice compared with WT. Transfusion of mononuclear cells from WT mice normalized the impaired endothelial regeneration in IRKO mice. Transfusion of c-kit+ bone marrow cells from WT mice also restored endothelial regeneration in IRKO mice. However, transfusion of c-kit+ cells from IRKO mice was less effective at improving endothelial repair.

CONCLUSIONS
Insulin resistance impairs APC function and delays endothelial regeneration after arterial injury. These findings support the hypothesis that insulin resistance per se is sufficient to jeopardize endogenous vascular repair. Defective endothelial repair may be normalized by transfusion of APCs from insulin-sensitive animals but not from insulin-resistant animals.
Exposure to the Chinese Famine in Early Life and the Risk of Metabolic Syndrome in Adulthood
Authors: Li Yanping , Jaddoe Vincent W. , Qi Lu , He Yuna , Wang Dong , Lai Jianqiang , Zhang Jian , Fu Ping , Yang Xiaoguang , Hu Frank B. 
Published: February 2011

OBJECTIVE
To examine whether exposure to the Chinese famine during fetal life and early childhood is associated with the risks of metabolic syndrome and whether this association is modified by later life environment.

RESEARCH DESIGN AND METHODS
We used data of 7,874 adults born between 1954 and 1964 from the 2002 China National Nutrition and Health Survey. Famine exposure groups were defined as nonexposed; fetal exposed; and early childhood, midchildhood, or late childhood exposed. Excess death rate was used to determine the severity of the famine. The ATP III criteria were used for the definition of metabolic syndrome (three or more of the following variables: elevated fasting triglyceride levels, lower HDL cholesterol levels, elevated fasting glucose levels, higher waist circumference, high blood pressure).

RESULTS
In severely affected famine areas, adults who were exposed to the famine during fetal life had a higher risk of metabolic syndrome, as compared with nonexposed subjects (odds ratio 3.13 [95% CI 1.24–7.89, P = 0.016]). Similar associations were observed among adults who were exposed to the famine during early childhood, but not for adults exposed to the famine during mid- or late childhood. Participants who were born in severely affected famine areas and had Western dietary habits in adulthood or were overweight in adulthood had a particularly high risk of metabolic syndrome in later life.

CONCLUSIONS
Exposure to the Chinese famine during fetal life or infancy is associated with an increased risk of metabolic syndrome in adulthood. These associations are stronger among subjects with a Western dietary pattern or who were overweight in adulthood.
A rare case of renal and uterine clear cell carcinoma: Which is the primary tumour?
Authors: Ho Christopher , Anuar Noraini , Nurismah M. , Singam Praveen , Goh Eng , Zainuddin Zulkifli 
Published: February 2011

AbstractRenal cell carcinoma to the uterus is rare. We describe a 52-year old lady who presented with progressive abdominal distension and computerized tomogram scan of the abdomen showing two pathologies; uterine and right renal tumour. It was initially thought to be two distinct tumours (double pathology). Radical nephrectomy and total abdominal hysterectomy with bilateral salpingo-oophorectomy was performed concurrently. Histopathological evaluation of the uterine and right renal tumour however surprised us with a rare form of metastasis from a renal tumour to the uterus. The method of differentiating primary renal cell carcinoma with uterine metastasis, from primary uterine carcinoma with renal metastasis, via immunohistochemistry, is described.