Movement, fishery sector impact, and factors affecting the recapture rate of tagged sand crabs, Portunus pelagicus (L.), in Moreton Bay, Queensland

1991 ◽  
Vol 42 (6) ◽  
pp. 751 ◽  
Author(s):  
MA Potter ◽  
WD Sumpton ◽  
GS Smith
Keyword(s):  
Bacterial Infection ◽  
Spatial Heterogeneity ◽  
Fishing Effort ◽  
Mature Male ◽  
Short Term ◽  
Portunus Pelagicus ◽  
Term Survival ◽  
Factors Affecting ◽  
Moreton Bay ◽  
Short Term Survival

Selected mature male sand crabs (Portunus pelagicus) (6827 individuals with carapace widths of 120-192 mm) were tagged with Floy ED-68BA anchor tags and released in 14 areas of Moreton Bay and adjacent oceanic waters. In all, 1003 tagged crabs (14.7%) were recaptured, with 79% of these recaptured less than 2 km from their release points and 4% recaptured more than 10 km from their release points. Of the total recaptures, 63% were made within 14 days of crabs being released. Commercial pot fishers recaptured the largest proportion (70%) of crabs, whereas recreational fishers and commercial trawl fishers recaptured only 18 and 12% of tagged crabs, respectively. Recapture rates varied from 2 to 59%, depending on location, reflecting a massive spatial heterogeneity of fishing effort. Only 2.6% of recaptured crabs moulted between release and recapture. Crabs that were undamaged at release had twice the recapture rate of damaged crabs (i.e. crabs that had missing appendages), and the probability of recapture increased with crab size. Under laboratory conditions, unmodified Floy FD-68BA tags reduced the short-term survival of male P. pelagicus, possibly because of bacterial infection, and it was concluded that Floy anchor tags were not suitable for field growth studies of P. pelagicus.

Evaluation of anchor tags for marking the commercial sand crab, Portunus pelagicus (L.) (Portunidae : Decapoda)

1986 ◽  
Vol 37 (6) ◽  
pp. 707 ◽  
Author(s):  
MJ Williams
Keyword(s):  
Population Studies ◽  
Field Trials ◽  
Short Term ◽  
Portunus Pelagicus ◽  
Term Survival ◽  
Return Rates ◽  
Moreton Bay ◽  
Short Term Survival

Laboratory and field trials of a modified Floy FD67 anchor tag were conducted on P. pelagicus in Moreton Bay, Queensland. The tags did not affect short-term survival of the crabs in the laboratory. Only 470 of 1754 crabs tagged and released in the field were returned. Return rates of crabs by size, sex, and area of tagging class were markedly heterogeneous. Poor visibility of the tags on recapture, regardless of their colour, makes this tag unsuitable for any quantitative population studies. Poor return rates were exacerbated by fishermen not examining categories of crabs that are unmarketable.

Factors affecting short-term survival in patients older than 85 treated with resection for stage II and III colon cancer

Surgery ◽  
2021 ◽  
Author(s):  
Gabriela Poles ◽  
Roma Kaur ◽  
Erika Ramsdale ◽  
Maria J. Schymura ◽  
Larissa K. Temple ◽  
...  
Keyword(s):  
Colon Cancer ◽  
Stage Ii ◽  
Short Term ◽  
Term Survival ◽  
Factors Affecting ◽  
Short Term Survival

scholarly journals Expression of lncRNA-ANRIL before and after Treatment and Its Predictive Value for Short-Term Survival in Patients with Coronary Heart Disease

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Jinhui Sun ◽  
Shi Qiu
Keyword(s):  
Coronary Heart Disease ◽  
Overall Survival ◽  
Heart Disease ◽  
Study Group ◽  
Survival Curves ◽  
Short Term ◽  
Term Survival ◽  
Factors Affecting ◽  
Before And After ◽  
Short Term Survival

This study aimed at observing the expression of lncRNA-ANRIL (ANRIL) before and after treatment and its predictive value for short-term survival in patients with coronary heart disease (CHD). Altogether, 112 patients with CHD admitted to the hospital were enrolled as a study group (SG), which was divided into a pretreatment study group (preSG) and a posttreatment study group (postSG). Further 72 healthy people undergoing physical examinations during the same period were enrolled as a control group (CG). Peripheral blood was collected from the subjects in the three groups, to detect the expression level of serum ANRIL using quantitative reverse transcription PCR (qRT-PCR). A receiver operating characteristic (ROC) curve was plotted to evaluate the diagnostic value of ANRIL for CHD. Kaplan-Meier survival curves were plotted to analyze 3-year survival rates in high- and low-ANRIL expression groups. Cox regression was conducted to analyze independent risk factors affecting the patients. The expression level of serum ANRIL in preSG was significantly lower than those in CG and postSG ( P < 0.05 ). According to the ROC curve, the area under the curve (AUC) of serum ANRIL for diagnosing CHD in CG was 0.894 and the optimal cutoff value was 0.639, with the sensitivity of 86.61% and the specificity of 93.67%. According to the survival curves, the 3-year overall survival rate in the high-ANRIL expression group was significantly lower than that in the low-expression group ( P < 0.05 ). History of smoking, high total cholesterol (TC), high triglyceride (TG), high homocysteine (Hcy), and ANRIL expression were independent prognostic factors affecting the overall survival time of the patients ( P < 0.05 ). ANRIL is poorly expressed in the peripheral blood of patients with CHD. Its detection has good sensitivity and specificity for diagnosing the disease, and its expression may be related to the poor prognosis of the patients.

scholarly journals Application of Mixture Cure Models in Determining the Survival of Patients with Cervical Cancer

2021 ◽  
Vol 14 (3) ◽  
Author(s):  
Rasool Gharaaghaji ◽  
Hale Ayatollahi ◽  
Marziye Mohammadpour ◽  
Javid Fereidoni ◽  
Hamid Reza Khalkhali
Keyword(s):  
Cervical Cancer ◽  
Parametric Models ◽  
Sample Population ◽  
Short Term ◽  
Term Survival ◽  
Factors Affecting ◽  
Cure Models ◽  
West Azerbaijan ◽  
Short Term Survival

Background: Cervical cancer is the fourth most common cancer among women and the seventh most common worldwide. Objectives: The present study aimed at investigating the usability of cure models in analyzing patients' survival. Besides, the factors affecting the long-term and short-term survival of the patients were determined, using Weibull, log-logistic, and log-normal models. Methods: The sample population of the study included 109 female patients with cervical cancer referred to Motahhari Hospital of Urmia (West Azerbaijan province) from 2004 to 2015. The cure survival analysis was used to determine the patients' survival. Results: The mean and standard deviation age at diagnosis was 50.1 ± 11.7 years. The patients' age, age at marriage, and the disease relapse were significant in the single-variable model on the long-term survival function of the patients. Moreover, the findings showed that Cured Log Logistic Parametric Model was more suitable for analyzing survival data in West Azerbaijan Province, Iran. The relapse variable was significant for all the parametric models. Conclusions: Given the divided sample population into immune and susceptible groups, the mixture cure models can be used to analyze the long-term and short-term survival of the patients with cervical cancer. Moreover, these models can be used to recognize the factors affecting both groups simultaneously.

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