scholarly journals Importance of the Landlocked Pond Smelt Hypomesus nipponensis as a food resource of the Little Tern Sternula albifrons on inland Andong Lake of Korea: A video image analysis

2019 ◽  
Author(s):  
Dong-Man Shin ◽  
Jeong-Ho Han

AbstractWe carried out the diet study of the little tern on the sandy islet in inland Andong Lake, Korea, during the beeding season (April to July 2018). To identify its diet and examine the importance of the main prey species as a food resource, we set two remote-control video cameras with 4K-resolution on the islet. One thousand two hundred seventy-five still images that the tern had prey in its bill were identified at the species level and measured on a monitor. Then, they were classified to five length-categories and compared among months and breeding stages. Freshwater fishes dominated the diet (100%; eleven species overall), where the landlocked pond smelt Hypomesus nipponensis (80.8%) and largemouth bass Micropterus salmoides (13.7%) were the primary and next essential prey species, respectively. The average prey item length was 51.04 ± 20.89 mm and significantly differed among months and breeding stages (P < 0.001, respectively). 50–75 mm prey length category was the most frequent in the diet (42.2%). In April and May, larger fish >50 mm constituted the greater part of their diet (93.1%, 66.3%, respectively), whereas the diet in June and July consisted of smaller fishes <50 mm (56.2%, 68.8% respectively). The occurrence frequency of prey length categories also varied significantly among the breeding stages (P < 0.001): 1–25 mm and 50–75 mm were overrepresented and underrepresented, respectively, at the chicks in the nest stage. On the other hand, 50–75 mm was preferred for the pre-laying and incubation stages. In terms of the survival condition of pond smelts, the before- and after water surface temperatures of the day when terns flew away showed a significant difference (P = 0.004), where a threshold looks like between 29.11°C and 30.04°C. These results support the prey abundance hypothesis that, when cold-water pond smelts might wholly swim down into the deeper lake in the hot summer, the terns might also leave their colony for another foraging place with higher prey availability.


2021 ◽  
Vol 912 (1) ◽  
pp. 012105
Author(s):  
E Jumilawaty ◽  
N Namira ◽  
A Anggelicha ◽  
A Hartanto

Abstract Cattle egret (Bubulcus ibis) is a widespread avian species inhabiting a variety of natural and artificial sites. Asam Kumbang Crocodile Park is one of establishments that occupied some portions of B. ibis habitat with no recent information on the food resource and prey availability for the viability of B. ibis. To this aim, we collected 10 random individuals of B. ibis to be sacrificed for gut content analysis of prey species. A total of 19 taxa was found as prey items in the gut of B. ibis with the dominant group from insects (Orthoptera, Scolopendromorpha). The diversity of prey species was categorized as moderate with intraspecific diet variation which formed four guilds that fed on specific taxa namely Group 1 (Haplotaxida, Lepidoptera, Anurans), Group 2 (Blattodea, Coleoptera, Araneae), Group 3 (Orthoptera, Scolopendromorpha); and Group 4 (Dermaptera, Squamata). Oxya chinensis and Oxya velox are important rice grasshopper pests that were also found in the gut of B. ibis reflecting their potential function as biological control agent.



2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Agnieszka Chwałczyńska ◽  
Katarzyna Gruszka ◽  
Ireneusz Całkosiński ◽  
Krzysztof A. Sobiech

The cold pressor test (CTP) as a diagnostic method of the circulatory system reactivity may be a basis for the qualification for thermal stimulation therapy. The aim of the work was a thermovisual assessment of the reaction to the Hines and Brown cold pressor test. A group of 30 healthy men in the age of 23.5 ± 0.8 years were examined. The average weight of the examinees was 78.4 ± 9.2 kg, their height 180.7 ± 5.9 cms, and BMI 23.9 ± 2.2 kg/m2. A thermovisual picture of a tested and not tested hand of all the subjects was taken before and after the cold pressor test. Under the influence of cold water the surface temperature of a tested hand has decreased in a statistically significant way by 8.3°C on average, which is 29% of the temperature before the test, whilst the temperature of an untested hand dropped by 0.67°C. The decreases of temperature were not even and there was a statistically significant difference between the dorsal and palmar side of the hand. The correlation between the changes of systolic blood pressure and the hand surface temperature before and after CTP was observed.



2021 ◽  
Vol 12 ◽  
Author(s):  
Florence Riera ◽  
Roland Monjo ◽  
Guillaume R. Coudevylle ◽  
Henri Meric ◽  
Olivier Hue

The aim of this study was to test the effect of face cooling with cold water (1.2 ± 0.7°C) vs. face cooling with neutral water (28.0 ± 3.0°C) during high-intensity swimming training on both the core temperature (Tco) and thermal perceptions in internationally ranked long-distance swimmers (5 men’s and 3 women’s) during 2 randomized swimming sessions. After a standardized warm-up of 1,200 m, the athletes performed a standardized training session that consisted of 2,000 m (5 × 400 m; start every 5’15”) at a best velocity then 600 m of aerobic work. Heart rate (HR) was continuously monitored during 5 × 400 m, whereas Tco, thermal comfort (TC), and thermal sensation (TS) were measured before and after each 400 m. Before and after each 400 m, the swimmers were asked to flow 200 mL of cold water (1.2°C) or neutral (22°C) water packaged in standardized bottles on their face. The swimmers were asked don’t drink during exercise. The velocity was significantly different between cold water and neutral water (p &lt; 0.004 – 71.58 m.min–1 ± 2.32 and 70.52 m.min–1 ± 1.73, respectively). The Tco was increased by ±0.5°C at race pace, under both face cooling conditions with no significant difference. No significant changes were noted in mean HR (i.e., 115 ± 9 and 114 ± 15 bpm for NW and CW, respectively). TC was higher with Cold Cooling than Neutral Cooling and TS was lower with Cold cooling compared with Neutral cooling. The changes in perceptual parameters caused by face cooling with cold water reflect the psychological impact on the physical parameters. The mean velocity was less important with face cooling whereas the heat rate and Tco were the same in the both conditions. The mechanism leading to these results seems to involve brain integration of signals from physiological and psychological sources.



2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Subrat Mukherjee ◽  
Neera Sen Sarkar

Relatively little is known about the feeding habit of the Royal Bengal Tiger of Sundarbans and the relative biomass of individual prey base species that the predator consumes during each kill. This is the first attempt to collect such data from the study area. Data sets of two phases have been used. Identification of undigested remains of 214 tiger scat samples was carried out. A comparison with Sundarbans tigers in zoo has been made. In its natural habitat, the tiger consumes more of spotted deer, followed by wild boar, rhesus monkey, and water monitor. Though the tiger consumes a relatively low proportion of small prey species to meet its dietary requirements, it gains importance in the present perspective. Significant increase is noted in the relative number of prey species consumed in the second phase, which correlates well with increased prey availability. Hypotheses formulated to find the difference in prey biomass and relative number of prey consumed have been tested statistically. A significant difference in terms of relative number of prey consumed only was derived which has been qualitatively correlated with the positive effect of increased vigilance, as revealed by secondary data, on conserving tiger habitat vis-a-vis the increased prey availability in Sundarbans.



2015 ◽  
Vol 75 (3 suppl 1) ◽  
pp. 181-189 ◽  
Author(s):  
FH. Aguiar-Silva ◽  
TG. Junqueira ◽  
TM. Sanaiotti ◽  
VY. Guimarães ◽  
PVC. Mathias ◽  
...  

Abstract In the Tapajos-Xingu interfluve, one of the largest birds of prey, the Harpy Eagle, is under intense anthropogenic pressure due to historical and recent reductions in forest cover. We studied prey availability and use by Harpy Eagle on six breeding territories on the low- and mid-Xingu River, between 2013 and 2015. We evaluated food resource availability using the environmental-surveys database from two methods: terrestrial surveys (RAPELD method) and fauna rescue/flushing before vegetation suppression for the Belo Monte Hydroelectric Complex construction. Harpy Eagle diet was identified by prey remains sampled around six nest trees. Eighteen species of mammals, birds and reptiles comprised the prey items. Most prey species were sloths, primates and porcupines, which have arboreal habits and are found in forested areas, but two species, hoatzin and iguana, are usually associated with riverine habitats. The proportion of prey from each species predated on the nest best studied was different from estimated availability (χ2 = 54.23; df = 16; p < 0.001), however there was a positive correlation (rs = 0.7; p < 0.01) between prey species consumed and abundance available, where the predation was more on species more abundant. Continuous monitoring of the Harpy Eagle diet at these nests could evidence changes in the assemblage of prey species available for Harpy Eagles, due to changes in the seasonal flood pulse of the Xingu River to be caused by the operation of the hydroelectric dam, and changes in habitat features by forest reduction around breeding territories. We believe that it is important to consider the protection of remnants of forested areas in the landscape matrix surrounding the breeding territories to maintain the food resource availability and allow all pairs to successfully reproduce.



2014 ◽  
Vol 2 (1) ◽  
Author(s):  
Rheiner V. Mandagi ◽  
Maya Moningka

Abstract: Human dive response aims to conserve oxygen. Direct contact of the water on the forehead, eyes and nose is a strong stimulus for which is innervated by the trigeminal nerve stimulation causes inhibition against respiratory and vasomotor centers and the activation of cardiac vagal motoneuron. The cardiovascular response that causes a decrease in the heart rate and vasoconstriction  Facial cold receptors more strongly activated by low water temperature (10 – 150C). The specific objective of this study was to analyze differences in pulse number of healthy male traditional diver before, while, and after simulated dives. This research is an experimental study with 20 analytical samples are housed in Malalayang 2 Data were analyzed using SPSS and Test T. The results of this study found the number of pulses during a breath hold and facial immersion in cold water was significantly lower than that before doing the activity (p = 0.0001) with 17.1±10.2 difference. The number after the pulse raised face of the water was significantly higher than the current hold your breath and facial immersion in cold water (p = 0.0001), with the difference in the amount of as much as 16.6±10.8 pulse. Conclusion : there are significant difference (p = 0.0001) number of pulses in healthy male traditional divers during the interim before and after the while doing simulations hold your breath and dive with facial immersion in cold water.                                                                                                         . Keywords : Pulse, Traditional Diving    Abstrak.Respon penyelaman manusia bertujuan untuk menghemat oksigen.Kontak langsung terhadap air pada dahi, mata dan hidung merupakan stimulus kuat karena dipersarafi oleh nervus trigeminus dimana stimulasi terhadapnya menyebabkan penghambatan pernafasan dan pengaktifan pusat vasomotor dan motoneuron vagal jantung.Respon kardiovaskuler ini yang menyebabkan penurunan denyut jantung dan terjadinya vasokontriksi.Reseptor dingin wajah lebih kuat teraktivasi dengan air temperatur rendah (10-150C).Tujuan khusus penelitian ini adalah menganalisa perbedaan jumlah denyut nadi laki-laki sehat penyelam tradisional sebelum, sementara, dan sesudah simulasi penyelaman.Penelitian ini merupakan jenis penelitian analitik eksperimental dengan 20 sampel yang bertempat di Malalayang 2. Data dianalisis dengan menggunakanSPSS dan Uji T. Hasil penelitian ini didapatkan jumlah denyut nadi saat melakukan tahan napas dan perendaman wajah dalam air dingin secara bermakna lebih rendah dibandingkan dengan sebelum melakukan kegiatan tersebut (p=0,0001) dengan perbedaan sebanyak 17,1+10,2. Jumlah denyut nadi sesudah wajah diangkat dari dalam air bermakna lebih tinggi daripada saat tahan napas dan perendaman wajah dalam air dingin (p=0,0001), dengan perbedaan jumlah denyut nadi sebanyak 16,6+10,8. Simpulan: ada perbedaan bermakna (p=0,0001) jumlah denyut nadi pada laki-laki sehat penyelam tradisional pada saat sebelum dengan sementara dan sesudah dengan sementara melakukan simulasi penyelaman dengan tahan napas dan perendaman wajah dalam air dingin. Kata Kunci: Denyut Nadi, Penyelaman Tradisional.



2021 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Adel Eftekhari ◽  
Khadijeh Nasiriani ◽  
Najmeh Baghian

Background: Restless legs syndrome is a neurological disorder in hemodialysis patients that causes disturbance and disability in rest, discomfort, sleep disturbance, fatigue, and stress. Objectives: This study was done to evaluate the effect of cold water bags on the severity of restless leg syndrome and sleep quality in hemodialysis patients. Methods: This is a quasi-experimental study (before and after) performed on patients referring to three hospitals in Yazd province. In this study, 40 patients with restless legs syndrome were selected from all patients who were referred to the hemodialysis ward by simple random sampling. The samples completed the Restless Legs Syndrome Symptoms Severity Questionnaire before and after using the cold water bag. Data were analyzed by SPSS 20 software and descriptive statistics and paired t-test at the significance level of < 0.05. Results: This study showed a significant difference between the mean score of restless leg syndrome and sleep quality before and after the interventions (P = 0.000). Furthermore, the mean scores of restless leg syndrome and sleep quality were different between the two intervention groups and statistically significant (P = 0.000). Conclusions: Based on the results, using a water bag reduces the symptoms of restless leg syndrome. Therefore, it is suggested that cold water bags should be used as an effective, safe, low-cost method.



Author(s):  
A. E. Chernikova ◽  
Yu. P. Potekhina

Introduction. An osteopathic examination determines the rate, the amplitude and the strength of the main rhythms (cardiac, respiratory and cranial). However, there are relatively few studies in the available literature dedicated to the influence of osteopathic correction (OC) on the characteristics of these rhythms.Goal of research — to study the influence of OC on the rate characteristics of various rhythms of the human body.Materials and methods. 88 adult osteopathic patients aged from 18 to 81 years were examined, among them 30 men and 58 women. All patients received general osteopathic examination. The rate of the cranial rhythm (RCR), respiratory rate (RR) heart rate (HR), the mobility of the nervous processes (MNP) and the connective tissue mobility (CTM) were assessed before and after the OC session.Results. Since age varied greatly in the examined group, a correlation analysis of age-related changes of the assessed rhythms was carried out. Only the CTM correlated with age (r=–0,28; p<0,05) in a statistically significant way. The rank dispersion analysis of Kruskal–Wallis also showed statistically significant difference in this indicator in different age groups (p=0,043). With the increase of years, the CTM decreases gradually. After the OC, the CTM, increased in a statistically significant way (p<0,0001). The RCR varied from 5 to 12 cycles/min in the examined group, which corresponded to the norm. After the OC, the RCR has increased in a statistically significant way (p<0,0001), the MNP has also increased (p<0,0001). The initial heart rate in the subjects varied from 56 to 94 beats/min, and in 15 % it exceeded the norm. After the OC the heart rate corresponded to the norm in all patients. The heart rate and the respiratory rate significantly decreased after the OC (р<0,0001).Conclusion. The described biorhythm changes after the OC session may be indicative of the improvement of the nervous regulation, of the normalization of the autonomic balance, of the improvement of the biomechanical properties of body tissues and of the increase of their mobility. The assessed parameters can be measured quickly without any additional equipment and can be used in order to study the results of the OC.



2018 ◽  
Vol 1 ◽  
pp. 107
Author(s):  
Adi Heryadi ◽  
Evianawati Evianawati

This study aims to prove whether transformational leadership training is effective for building anti-corruption attitudes of villages in Kebonharjo village, subdistrict Samigaluh Kulonprogo. This research is an experimental research with one group pre and posttest design.Subject design is 17 people from village of 21 candidates registered. Measuring tool used in this research is the scale of anti-corruption perception made by the researcher referring to the 9 anti-corruption values with the value of reliability coefficient of 0.871. The module used as an intervention made by the researcher refers to the transformational leadership dimension (Bass, 1990). The data collected is analyzed by statistical analysis of different test Paired Sample Test. Initial data collection results obtained sign value of 0.770 which means> 0.05 or no significant difference between anti-corruption perception score between before and after training. After a period of less than 1 (one) month then conducted again the measurement of follow-up of the study subjects in the measurement again using the scale of anti-corruption perception. The results of the second data collection were analysed with Paired Samples Test and obtained the value of 0.623 sign meaning p> 0.05 or no significant difference between post test data with follow-up data so that the hypothesis of this study was rejected.



Author(s):  
Sanjeeva Kumar Goud T ◽  
Rahul Kunkulol

The present study was aimed to study the effect of Sublingual Vitamin D3 on Serum Vitamin D level in Vitamin D deficiency patients. This was a cross-sectional and interventional study. All the Vitamin D deficiency patients of age 18-60years and either gender, willing to participate in the study were included. Patients who had greater than 20 ng/ml were excluded from the study. The total number of participants in our study was 200, out of these 111 males and 89 females, the mean age in our study was 51.07 ± 7.39Yrs. All volunteers were given sublingual vitamin D3 (60,000IU) in six doses every fifteen days of follow up for 3 months. The subject’s serum 25(OH)D levels were estimated before and after the treatment of sublingual vitamin D3. There was a statistically significant difference in serum vitamin D3 level before 16.61±6.71 ng/ml and after 35.80±7.80 ng/ml after treatment with Sublingual Vitamin D3. Six doses of 60,000IU of Vitamin D3 sublingual route having improved the role of serum 25(OH)D levels in the treatment of Vitamin D3 deficiency patients.Keywords: Vitamin D3; Sublingual route



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