The morphometrics and colouration of the European pond turtle Emys orbicularis in Lubuskie province (West Poland)

Biologia ◽  
2006 ◽  
Vol 61 (5) ◽  
Author(s):  
Bartłomiej Najbar ◽  
Ewa Szuszkiewicz
Keyword(s):  
Endangered Species ◽  
Body Mass ◽  
Carapace Length ◽  
Egg Laying ◽  
Emys Orbicularis ◽  
Straight Carapace Length ◽  
Pond Turtle ◽  
The Past

AbstractThe European pond turtle Emys orbicularis, is an endangered species in Poland. The region of the Ilanka River, in the western part of the country (Lubuskie province), is the most densely inhabited area by the species. Several populous sites are dispersed over the whole area of the province. Over the past 10 years, 279 turtles were captured at 11 sites. In 218 individuals, those with a straight carapace length (SCL) between 2.10–12.10 cm, sex was not determined; the remaining 61 with SCL 13.33–19.85 cm were sexed. Females had bigger bodies and were heavier than males. The SCL of females was 17.10 ± 1.7 cm (average ± SD, n = 33), their body mass (BM) was 790.6 ± 228.7 g (n = 27), and in the case of males SCL was 15.44 ± 1.5 cm and BM was 554.2 ± 138.8 g (n = 28). SCL of the smallest egg laying female was 15.30 cm, and SCL of the smallest mating male was 13.33 cm. The colouration of the turtles which undergoes change with age can be varied.

scholarly journals Allometry of sexual size dimorphism in turtles: a comparison of mass and length data

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e2914 ◽  
Author(s):  
Koy W. Regis ◽  
Jesse M. Meik
Keyword(s):  
Body Mass ◽  
Carapace Length ◽  
Sexual Size Dimorphism ◽  
Rensch’S Rule ◽  
Size Dimorphism ◽  
Straight Carapace Length ◽  
Rensch's Rule ◽  
The Family ◽  
Family Level ◽  
Males And Females

BackgroundThe macroevolutionary pattern of Rensch’s Rule (positive allometry of sexual size dimorphism) has had mixed support in turtles. Using the largest carapace length dataset and only large-scale body mass dataset assembled for this group, we determine (a) whether turtles conform to Rensch’s Rule at the order, suborder, and family levels, and (b) whether inferences regarding allometry of sexual size dimorphism differ based on choice of body size metric used for analyses.MethodsWe compiled databases of mean body mass and carapace length for males and females for as many populations and species of turtles as possible. We then determined scaling relationships between males and females for average body mass and straight carapace length using traditional and phylogenetic comparative methods. We also used regression analyses to evalutate sex-specific differences in the variance explained by carapace length on body mass.ResultsUsing traditional (non-phylogenetic) analyses, body mass supports Rensch’s Rule, whereas straight carapace length supports isometry. Using phylogenetic independent contrasts, both body mass and straight carapace length support Rensch’s Rule with strong congruence between metrics. At the family level, support for Rensch’s Rule is more frequent when mass is used and in phylogenetic comparative analyses. Turtles do not differ in slopes of sex-specific mass-to-length regressions and more variance in body size within each sex is explained by mass than by carapace length.DiscussionTurtles display Rensch’s Rule overall and within families of Cryptodires, but not within Pleurodire families. Mass and length are strongly congruent with respect to Rensch’s Rule across turtles, and discrepancies are observed mostly at the family level (the level where Rensch’s Rule is most often evaluated). At macroevolutionary scales, the purported advantages of length measurements over weight are not supported in turtles.

Nest site fidelity in the Slovakian population of the European pond turtle Emys orbicularis

2012 ◽  
Vol 33 (2) ◽  
pp. 207-213
Author(s):  
Martin Bona ◽  
Milan Novotný ◽  
Stanislav Danko ◽  
Adriana Burešová
Keyword(s):  
Average Distance ◽  
Egg Laying ◽  
Reproductive Pattern ◽  
Emys Orbicularis ◽  
Pond Turtle ◽  
Nest Site Fidelity ◽  
Natural Reserve ◽  
Temporal Aspects ◽  
Time Requirements ◽  
Nesting Habits

In many places in Europe, the pond turtle Emys orbicularis (Linnaeus, 1758) is an endangered species. Establishing its reproductive pattern is critical for the understanding and protection of this turtle. In this study, which took place from 1998 to 2009 in the Tajba National Nature Reserve, Slovakia (48°23′N, 21°47′E), are presented the results concerning the spatial and temporal aspects of nesting habits of individual turtles. From the total monitored group of 39 turtles, eight individuals which laid eggs more than four times during the whole study period were selected for statistical evaluation. It was found that five individuals from this group demonstrated a fidelity to the nesting area, and that the egg-laying period starts in mid-May and continues until late June. During the investigation, six turtles nested twice per year with an interval of about 24 days. The average distance between the nests of an individual turtle was close to 138 metres, and the distance of the nests from water was about 349 metres. The data obtained on the space and time requirements of the European pond turtle for successful reproduction are helpful to protect this species more efficiently, not only in the Tajba National Natural Reserve, but also in other similar sites in Europe.

Population estimate and body size of European pond turtles (Emys orbicularis) from Pazarağaç (Afyonkarahisar/Turkey)

Biologia ◽  
2007 ◽  
Vol 62 (2) ◽  
Author(s):  
Dinçer Ayaz ◽  
Uwe Fritz ◽  
Cemal Tok ◽  
Ahmet Mermer ◽  
Murat Tosunoğlu ◽  
...  
Keyword(s):  
Body Size ◽  
Sex Ratio ◽  
Confidence Interval ◽  
Population Size ◽  
Body Mass ◽  
Carapace Length ◽  
Population Estimate ◽  
Emys Orbicularis ◽  
Adult Sex Ratio ◽  
Almost All

AbstractData on population size, adult sex ratio, body size and mass are provided for a population of the turtle Emys orbicularis near Pazarağaç (Afyonkarahisar/Turkey). Using the mark-recapture method (triple catch), a population size of 664 turtles was estimated (95% confidence interval, range 332–996), corresponding to a density of 83 turtles per hectare (range 41.5–124.5). The adult sex-ratio was significantly skewed in favor of males (2.02 males: 1 female; P < 0.001). Almost all recorded specimens were adult (98.1%). Mean straight carapace length (SCL) and body mass (BM) of adult turtles were: SCL = 128.65 mm, BM = 345 g for males (n = 168) and SCL = 135.37 mm, BM = 463 g for females (n = 83).

scholarly journals The feeding behaviour of the European pond turtle (Emys orbicularis, L. 1758) is not a threat for other endangered species

2020 ◽  
Vol 23 ◽  
pp. e01133
Author(s):  
Charlotte Ducotterd ◽  
Julien Crovadore ◽  
François Lefort ◽  
Antoine Guisan ◽  
Sylvain Ursenbacher ◽  
...  
Keyword(s):  
Endangered Species ◽  
Feeding Behaviour ◽  
Emys Orbicularis ◽  
Pond Turtle

scholarly journals Clinical characteristics and longitudinal changes of patients with non-alcoholic fatty liver disease in 2 decades: the NAGALA study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Takuro Okamura ◽  
Yoshitaka Hashimoto ◽  
Masahide Hamaguchi ◽  
Akihiro Obora ◽  
Takao Kojima ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Liver Disease ◽  
Fatty Liver ◽  
Body Mass ◽  
Fatty Liver Disease ◽  
Abdominal Ultrasonography ◽  
Alcoholic Fatty Liver ◽  
The Past ◽  
Significant Difference ◽  
Alcoholic Fatty Liver Disease

Abstract Background In this study, to clarify the evolving background of people with non-alcoholic fatty liver disease (NAFLD), we compared the current prevalence of NAFLD with that of 2 decades ago. Methods We included two cohorts. The past cohort was from 1994 to 1997 and included 4279 men and 2502 women. The current cohort was from 2014 to 2017 and included 8918 men and 7361 women. NAFLD was diagnosed by abdominal ultrasonography. Results The prevalence of NAFLD increased in both genders throughout these 2 decades (18.5% in the past cohort and 27.1% in the current cohort for men; and 8.0% in the past cohort and 9.4% in the current cohort for women). The prevalence of hyperglycemia increased, whereas the prevalence of low high-density lipoprotein cholesterol levels and hypertriglyceridemia significantly decreased. There was no significant difference in the mean body mass index. Multivariate analysis revealed that the prevalence of obesity and body mass index were significantly associated with the prevalence of NAFLD in both the past and current cohorts. Conclusions The incidence of NAFLD significantly increased throughout these 2 decades, and obesity is the most prevalent factor. Thus, body weight management is an essential treatment option for NAFLD.

Hybridisation between turtle subspecies: a case study with the European pond turtle (Emys orbicularis)

2016 ◽  
Vol 18 (2) ◽  
pp. 287-296 ◽  
Author(s):  
Matthieu Raemy ◽  
Uwe Fritz ◽  
Marc Cheylan ◽  
Sylvain Ursenbacher
Keyword(s):  
Emys Orbicularis ◽  
Pond Turtle

Basking Site Selection and Usage Strategies of the European Pond Turtle, Emys orbicularis (Linnaeus, 1758) in Babat valley (Gödöllő, Hungary)

2021 ◽  
Vol 28 (4) ◽  
pp. 175-184
Author(s):  
Gergő Erdélyi ◽  
Borbála Szabó ◽  
István Kiss
Keyword(s):  
Site Selection ◽  
Habitat Characteristics ◽  
Freshwater Turtles ◽  
Emys Orbicularis ◽  
Pond Turtle ◽  
Site Type ◽  
Type Selection ◽  
Body Sizes ◽  
Negative Effect ◽  
Selection Of

Sun basking is the most common method for freshwater turtles, such as the European pond turtle, to maintain optimal body temperature. The attributes of the macro- and microhabitat features around the basking sites affect the basking site selection of the European pond turtle. To protect the European pond turtle, it is important to know the basking habits among the biological characteristics of the species, along with the effects of the habitat characteristics and the choice of the type of basking sites. The purpose of our research was to detect the effects of macro- and microhabitat features on the selection of basking sites. We wanted to determine basking site type selection according to the carapace length classes and if there is any difference in the choice of basking trunks and branches with different thicknesses. Turtles choose basking sites with less closed vegetation in their environment. We have detected seasonal differences in the microhabitat features. The closing reed and Typha sp. had a negative effect on the number of observed basking turtles. The most popular type of basking sites in the pond system was the commonly occurred fallen tree trunks and branches in the water, regardless of turtle body size. Most turtles used thinner tree trunks and branches for basking. In the meantime, we found differences in the choice of basking trunks between the turtles with different body sizes. Younger turtles with smaller bodies appeared in larger numbers on emergent branches with smaller diameters.

Unexpected early extinction of the European pond turtle (Emys orbicularis) in Sweden and climatic impact on its Holocene range

2009 ◽  
Vol 18 (6) ◽  
pp. 1252-1262 ◽  
Author(s):  
ROBERT S. SOMMER ◽  
CHARLOTTE LINDQVIST ◽  
ARNE PERSSON ◽  
HENRIK BRINGSØE ◽  
ANDERS G. J. RHODIN ◽  
...  
Keyword(s):  
Climatic Impact ◽  
Emys Orbicularis ◽  
Pond Turtle

scholarly journals Prevalence and Characteristics of Back Pain in Children and Adolescents from the Region of Murcia (Spain): ISQUIOS Programme

2022 ◽  
Vol 19 (2) ◽  
pp. 946
Author(s):  
María Teresa Martínez-Romero ◽  
Antonio Cejudo ◽  
Pilar Sainz de Baranda
Keyword(s):  
Back Pain ◽  
Body Mass ◽  
Ad Hoc ◽  
Pubertal Development ◽  
Body Height ◽  
Maturity Stage ◽  
Leg Length ◽  
Anthropometric Measures ◽  
School Aged Children ◽  
The Past

Puberty is a vulnerable period for musculoskeletal disorders due to the existence of a wide inter-individual variation in growth and development. The main objective of the present study was to describe the prevalence of back pain (BP) in the past year and month in school-aged children according to sex, age, maturity status, body mass index (BMI) and pain characteristics. This study involved 513 students aged between 9 and 16 years. Anthropometric measures were recorded to calculate the maturity stage of the students using a regression equation comprising measures for age, body mass, body height, sitting height and leg length. An ad hoc questionnaire composed of eight questions was used to describe BP prevalence in school-aged children. The results showed that the prevalence of BP in school-aged children was observed in 35.1% over the last year (45% boys and 55% girls), and 17.3% (40.4% boys and 59.6% girls, with an association found between female sex and BP) in the last month. The prevalence of back pain in the past year and month was higher the older the students were, or the more pubertal development they had experienced. The prevalence of BP in the last year was also higher in those with overweight or obesity. After adjustment for sex, there was an association between BP and older age and higher BMI in boys and an association between BP and higher pubertal development in girls. In summary, the present study showed that the prevalence of BP was related to the maturity stage and weight of the participants, with different prevalence patterns found according to sex.

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