Size-At-Age Variability and Sexual Dimorphism of Morphometric Characteristics in the Late Ontogenesis of the Marsh Frog, Pelophylax Ridibundus (Anura, Ranidae), from Terrytory of Crimea

2019 ◽  
Vol 53 (4) ◽  
pp. 325-334
Author(s):  
V. N. Peskov ◽  
N. A. Petrenko ◽  
V. Yu. Reminnyi
Keyword(s):  
Age Groups ◽  
The Body ◽  
Adult Males ◽  
Morphometric Characteristics ◽  
Morphometric Characters ◽  
Mean Values ◽  
Marsh Frog ◽  
Males And Females ◽  
Size At Age ◽  
Linear Body

Abstract We study size-at-age and sexual variability of morphometric characteristics of the marsh frog. According to the size of the body, males were divided into three size-age groups (juvenis, subadultus, adultus), females — into four groups (juvenis, subadultus, adultus, adultus-I). We found that the chronological age of frogs (skeletochronology) does not always correspond to their biological age (size and proportions of the body). We noted that the semi-adult males are reliably larger than females by mean values of 26 studied morphometric characters. Males and females of “adultus” group do not differ by linear body size, significant differences were found in body proportions (7 characters). For the females of “adultus-I” group, the mean values of 26 characters are significantly larger than for “adultus” males. The results of our study showed that with the age of the marsh frog, the level of exhibition, directionality and structure of morphometric sex differences changes.

scholarly journals New Method for Examining Association Between Obesity and Diabetes With Age Among Korean Adults

2021 ◽  
Author(s):  
Nam Lyong Kang
Keyword(s):  
Fasting Blood Glucose ◽  
The Body ◽  
Mean Values ◽  
Korean Adults ◽  
Health And Nutrition ◽  
Obesity And Diabetes ◽  
Males And Females ◽  
Obesity Indices ◽  
Suitable Index ◽  
Diabetes And Obesity

Abstract This study examined the age-dependence of the association between diabetes and obesity among Korean adults. The data from the Seventh Korean National Health and Nutrition Examination Survey (2017) were analyzed. This paper considered the body mass index (BMI) and waist-to-height ratio (WHT2R) as obesity indices and the fasting blood glucose (FBG) as a diabetes index and used their lump mean values and the regression method. The WEHT2R was a more suitable index for examining the FBG than the BMI. The increase in the WHT2R of females was more sensitive to age than that of males. In contrast, the increase in the FBG of males was more sensitive to age than that of females. The ages that FBG increased to 100.0 mg/DL were 44.7 and 60.5 years for males and females, respectively. Korean adults should reduce their WHT2R to prevent the excessive increase in their FBG level and Korean males should take care of their FBG from a young age. The present results can be used for a preliminary inspection of diseases, such as functional degradation of Langerhans islets and gestational diabetes

Blood and plasma volume in adult males

1962 ◽  
Vol 17 (2) ◽  
pp. 195-198 ◽  
Author(s):  
Marvin J. Yiengst ◽  
Nathan W. Shock
Keyword(s):  
Plasma Volume ◽  
Age Groups ◽  
Dilution Method ◽  
Total Blood Volume ◽  
Adult Males ◽  
Age Changes ◽  
Total Blood ◽  
Mean Values ◽  
The Mean ◽  
Blood Volumes

Total blood volumes were estimated in 94 normal ambulatory males, aged 19–95 years, by the T-1824 dye dilution method. There were no significant age changes when results were expressed in terms of either body weight or surface area. The mean values for individual age groups between 40'49 and 80'95 years varied between 46.7 ± 1.5 and 51.5 ± 1.5 ml/kg body wt. for plasma volume and between 75.1 ± 2.0 and 82.3 ± 2.0 ml/kg body wt. for total blood volume. Submitted on October 16, 1961

scholarly journals Are there sex differences in the body size of the Eurasian red squirrel in Slovakia?

2015 ◽  
Vol 1 (1) ◽  
pp. 5-12 ◽  
Author(s):  
Alexander Čanády ◽  
Ladislav Mošanský ◽  
Peter Krišovský
Keyword(s):  
Function Analysis ◽  
Tail Length ◽  
The Body ◽  
Red Squirrel ◽  
Sexual Interaction ◽  
Mean Values ◽  
Foot Length ◽  
Significant Difference ◽  
Hind Foot ◽  
Males And Females

Abstract Sexual dimorphism of the Eurasian red squirrel on five somatic variables (head-and-body length, tail length, hind foot length, ear length and body weight) was evaluated on 55 squirrels. The overlap of values of the measured traits among sexes was high, but in all traits (with exception of the tail length) males seem to exhibit slightly higher mean values than females. However, these differences were non-significant, with the exception of a small significant difference in the tail length and tail-to-head-and-body ratio. Similarly, the results of discriminant function analysis show no differences between the sexes. Positive correlation analyses, together with PCA values, confirmed that tail length and hind foot length are traits that play a significant role in overall variability. We suggest that this relationship could explain their mutual importance in locomotion, where the feet are essential for movement in the trees. By contrast, the tail maintains balance on thin branches, or during jumps from one crown to another. Longer tails also demonstrate differential selection on males and females for a locomotor trait. Similarly, we discuss whether variations in tail length were connected to female reproductive success. Our results suggest that the non-significant results regarding SSD provide the benefit of the same size for both sexes in the protection of territory as well as inter- and intra-sexual interaction.

Prediction of body weights of Nellore sheep under field condition

2015 ◽  
Author(s):  
M. Rani ◽  
B. Ekambaram ◽  
B. Punya Kumari
Keyword(s):  
Body Weight ◽  
Body Length ◽  
Age Groups ◽  
The Body ◽  
Coefficient Of Determination ◽  
Regression Equations ◽  
Body Weights ◽  
Chest Girth ◽  
Males And Females ◽  
Nellore Sheep

Data on 1350 Nellore sheep of 2, 4, 6 and 8-teeth age, reared under field conditions in 12 mandals of Chittoor district of Andhra Pradesh were utilized for development of prediction equations and study the phenotypic association among body measurements and body weights. The coefficients of correlation between body weight with the height at withers, chest girth, paunch girth, hip width and body length were positive and high in magnitude in both males and females in majority of the age groups studied. Step-down regression equations were fitted to predict the body weight based on biometrical measurements at different ages. The height at withers, chest girth, paunch girth, hip width and body length have contributed significantly to the expression of body weights at the majority of the ages studied. High coefficient of determination (R2) value was observed in males at 6 and 8-teeth age as 88 per cent, while in females 50 per cent at 2-teeth age.

A new species of Elachistocleis (Anura; Microhylidae) from the Brazilian Amazon

Zootaxa ◽  
2010 ◽  
Vol 2496 (1) ◽  
pp. 63 ◽  
Author(s):  
LUÍS FELIPE TOLEDO
Keyword(s):  
New Species ◽  
Amazon Basin ◽  
Brazilian Amazon ◽  
The Body ◽  
Adult Males ◽  
Males And Females ◽  
A New Species ◽  
Red Coloration

A new species of Elachistocleis (E. magnus) is described from the Amazon basin, in the municipality of Espigão do Oeste, state of Rondônia, Brazil. It differs from all other species of the genus by the combination of the following characters: i) size larger than 31 mm in adult males, ii) grayish ventral coloration, iii) presence of large post-commissural glands, iv) lack of red coloration in the body, and v) grayish dorsum in preserved individuals. There is dimorphism between males and females in size, structures and coloration. Vocalizations and larvae remain unknown.

Phylogenetic utility of the geometric model of the body form in leeches (Clitellata: Hirudinida)

Biologia ◽  
2015 ◽  
Vol 70 (8) ◽  
Author(s):  
Joanna M. Cichocka ◽  
Aleksander Bielecki
Keyword(s):  
Phylogenetic Trees ◽  
Geometric Model ◽  
Cladistic Analysis ◽  
The Body ◽  
Ecological Groups ◽  
Morphometric Data ◽  
Weighting Method ◽  
Morphometric Characters ◽  
Mean Values ◽  
Body Form

AbstractArchitectonics of the leech body constitute a source of promorphological characters which have been used for modeling. A geometric model of the leech body form was applied in a phylogenetic analysis for the estimation of the utility of morphometric data in the reconstruction of the history of Hirudinida. A cladistic analysis included species representing all main ecological groups of leeches. In the analysis the morphometric data were used as non-discretized mean values and as mean values coded with the gap-weighting method. Obtained phylogenetic trees were compared with cladograms generated based on combined data sets including discrete qualitative morphological characters as well as known molecular phylogenies of leeches. The study demonstrates that the morphometric characters provide additional evidence for the confirmation of monophyletic groups within Hirudinida. Thus, the morphometric data resulting from the geometric model of the leech body form appeared to be applicable for the reconstruction of leech phylogeny

scholarly journals Gut Morphometrics in the Long-Tailed Duck Clangula Hyemalis Wintering on the Polish Baltic Coast

2008 ◽  
Vol 53 (1-4) ◽  
pp. 37-47
Author(s):  
Ewa Działa-Szczepańczyk
Keyword(s):  
Body Size ◽  
Body Length ◽  
The Body ◽  
Adult Males ◽  
Morphometric Characters ◽  
Baltic Coast ◽  
Intestine Length ◽  
Autumn And Winter ◽  
Clangula Hyemalis ◽  
Sternum Length

Gut Morphometrics in the Long-Tailed DuckClangula HyemalisWintering on the Polish Baltic CoastThe study included guts of 140 individuals of the long-tailed duckClangula hyemalisobtained in autumn and winter of 1993-2000 in the western part of the Polish Baltic Coast. The following morphometric characters were analysed: duodenum length (DL), combined jejunum and ileum length (JIL), small intestine length (SIL), combined terminal intestine and cloaca length (TCL), and combined length (CBL) and weight (CBW) of both caeca. In the analysis the birds' sex and age were taken into consideration, as well as their body size characterised by body weight, body length, and sternum length. Ontogenetic differences in the gut morphometric characters were more pronounced in males than in females, and immature drakes were characterised by higher average values of JIL and CBW, compared to adult males. Besides the CBL and CBW, sexual dimorphism was manifest in the body size and other gut measurements - those parameters achieved higher average values in males than in females. No such differences were recorded with respect to relative parameters: DL, SIL, and TCL expressed as the percentage of the birds' body length. In case of JIL, CBL, and CBW no relation with any of the body size parameters was found. No relevant relations between SIL and JIL, and the measurements of CBL and TCL were noticed.

scholarly journals Investigations of Variability of Morphometric Characteristics in Stone Crayfish in Order to Preserve Autochthonous Genome

2020 ◽  
Vol 18 (1-2) ◽  
Author(s):  
Rajko Roljić ◽  
Vera Nikolić ◽  
Nebojša Savić
Keyword(s):  
Sexual Dimorphism ◽  
Carapace Length ◽  
Carapace Width ◽  
Morphological Variability ◽  
The Body ◽  
Morphometric Characteristics ◽  
Baited Traps ◽  
Males And Females ◽  
Austropotamobius Torrentium ◽  
Stone Crayfish

This paper presents the information about morphological variability and sexual dimorphism of the stone crayfish (Austropotamobius torrentium) in the area of Korana River in Mrkonjic Grad. The crayfish were caught by hand made baited traps from October 2018 to May 2019. A total of 46 crayfish were caught, of which 33 males and 13 females. The dimensions of eight morphometric characteristics: body weight (W), body length (TBL), rostrum length (ROL), rostrum width (ROW), claw length (CLL), carapace length (CPL), carapace width (CPW) and abdomen length (ABL), were analyzed, both in males and females. Also, the body condition was determined for all individuales. The measurements results of morphometric characteristics partially matched into the alredy known range of variations. These data presens first ones for the observed area. By using Mann-Whitey U-test, it was noted that there are significant differences between the sexes for W, TBL, CLL, CPL, CPW and ABL. These resuls could be explained by sexual dimorphism of the stone crayfish.

scholarly journals The Identification Of Morphometric Characteristics And Fattenning Of Mud Crabs (Scylla spp.) In Para Island, Tatoareng District, Sangihe Islands Regency, North Sulawesi Province

2018 ◽  
Vol 7 (1) ◽  
pp. 42
Author(s):  
Aditya Sasamu ◽  
Winda M. Mingkid ◽  
Revol D. Monijung
Keyword(s):  
Body Weight ◽  
The Body ◽  
Scylla Serrata ◽  
Morphometric Characteristics ◽  
Morphometric Characters ◽  
North Sulawesi ◽  
Trash Fish ◽  
Mangrove Crabs ◽  
Mud Crabs

The purpose of this study was to identify the morphometric characters of mangrove crabs Scylla spp. and to grow them on the island of Para Sangihe Islands Regency, North Sulawesi Province. There were 2 types of crabs found during crab’s collection. However, the most abundant one was Scylla serrata while the olivacea is only one tail. The results of this study indicate that mangrove crabs that were kept for 2 weeks feed on trash fish three times a day experience growth. Based on the results of the study, it can be concluded that: the type of crab found on Pulau Para, Tatoareng District, Sangihe Islands Regency, North Sulawesi Province were mostly S. serrata (34 tails) and one tail of S. olivacea. The fattening of mangrove crabs showed results on the body weight and carapace length.Further research on mangrove crabs needs to be done on different aspects such as preferable food and time of the abundancy.Keywords: Crab, Scylla spp., identification, fattening. ABSTRAK       Tujuan dari penelitian ini adalah untuk mengidentifikasi karakter morfometrik kepiting bakau Scylla spp dan cara penggemukannya di Pulau Para Kabupaten Kepulauan Sangihe Provinsi Sulawesi Utara. Dua jenis kepiting bakau ditemukan saat pengumpulan data, namun yang ditemukan paling banyak adalah Scylla serrata, sedangkan S. olivacea hanya 1 ekor saja.Hasil penelitian ini menunjukan bahwa kepiting bakau yang dipelihara selama 2 minggu dengan diberi pakan ikan rucah sebanyak tiga kali sehari mengalami pertumbuhan. Berdasarkan hasil penelitian dapat disimpulkan bahwa: jenis kepiting yang ditemukan di Pulau Para Kecamatan Tatoareng Kabupaten Kepulauan Sangihe Provinsi Sulawesi Utara adalah Scylla serrata (34 ekor) dan S. olivacea (1 ekor). Penggemukan kepiting bakau dengan pakan ikan rucah tiga kali sehari menunjukan adanya pertumbuhan berat badan dan panjang lebar karapas.     Penelitian lanjutan tentang kepiting bakau perlu dilakukan untuk melihat berbagai aspek seperti makanan kesukaan dan waktu kelimpahanya.Kata kunci : Kepiting, Scylla spp, identifikasi, penggemukan.

Growth of Cutthroat Trout (Salmo clarki) in Chef Creek, Vancouver Island, British Columbia

1970 ◽  
Vol 27 (11) ◽  
pp. 2063-2070 ◽  
Author(s):  
Edwin L. Cooper
Keyword(s):  
Lateral Line ◽  
Age Groups ◽  
Cutthroat Trout ◽  
Group Iv ◽  
The Body ◽  
Age Group ◽  
Caudal Peduncle ◽  
Anterior Portion ◽  
Size At Age ◽  
Salmo Clarki

Cutthroat trout were collected periodically from April 3 to September 20, 1968, by electrofishing and were preserved in formalin. Within a few days, each fish was measured and a sample of scales was taken for study. Scales first appeared on these cutthroat trout immediately above and below the lateral line on the anterior portion of the caudal peduncle. Scales were always selected from this area for study, mounted in glycerin–gelatin, and examined at a magnification of 127 diameters. Scales grow relatively more slowly as the fish increases in length, causing the body–scale relation to be curvilinear. Growth of the fish was determined both by calculating size-at-age data from the scales and by comparing mean lengths of age-groups collected at different times of the year.The growth of cutthroat trout from Chef Creek was slow; calculated mean fork lengths for the first three annuli were 50, 84, and 119 mm. Only a few fish of age-group IV were collected and these were considered to be nonanadromous individuals on the basis of scale examination and small size.

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