Age Structure, Body Size, and Sexual Dimorphism in a High-Altitude Population of Pelophylax ridibundus (Pallas, 1771)

This study aimed to describe the morphological characteristics and age structure of a P. ridibundus population sampled from a high altitude. For this purpose, a total of 54 adult frogs (33 males and 21 females) were collected from Şavşat district, Artvin province, Türkiye. The samples were aged base...

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Published inAnimals (Basel) Vol. 14; no. 22; p. 3230
Main Authors Gül, Serkan, Dursun, Cantekin, Tabak, Ceren, Büyüksofuoğlu, Sümeyye, Özdemir, Nurhayat
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 01.11.2024
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ISSN2076-2615
2076-2615
DOI10.3390/ani14223230

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Abstract This study aimed to describe the morphological characteristics and age structure of a P. ridibundus population sampled from a high altitude. For this purpose, a total of 54 adult frogs (33 males and 21 females) were collected from Şavşat district, Artvin province, Türkiye. The samples were aged based on skeletochronology method. Furthermore, von Bertalanffy growth curve models were constructed using SVL and weight data. To assess sexual size and shape dimorphism, the measurements of 23 different morphological characters were analyzed using univariate and multivariate statistical techniques. The mean SVL and weight were found to be 78.05 mm and 60.87 g for males and 93.95 mm and 109.61 g for females. The mean age was 3.67 years and 4.05 years for males and females, respectively. The maximum age was found to be 6 years for both sexes. Growth curve models revealed a significant relationship between age, SVL, and weight. A clear female-biased sexual size dimorphism was found in all morphological characters. However, SVL-adjusted values indicated that males had larger head and limb structures resulting from evolutional and sexual pressures associated with reproduction and male–male competition. The shape dimorphism was found only in forelimbs, and it was male-biased and was related to clasping in amplexus.
AbstractList This study aimed to describe the morphological characteristics and age structure of a P. ridibundus population sampled from a high altitude. For this purpose, a total of 54 adult frogs (33 males and 21 females) were collected from Şavşat district, Artvin province, Türkiye. The samples were aged based on skeletochronology method. Furthermore, von Bertalanffy growth curve models were constructed using SVL and weight data. To assess sexual size and shape dimorphism, the measurements of 23 different morphological characters were analyzed using univariate and multivariate statistical techniques. The mean SVL and weight were found to be 78.05 mm and 60.87 g for males and 93.95 mm and 109.61 g for females. The mean age was 3.67 years and 4.05 years for males and females, respectively. The maximum age was found to be 6 years for both sexes. Growth curve models revealed a significant relationship between age, SVL, and weight. A clear female-biased sexual size dimorphism was found in all morphological characters. However, SVL-adjusted values indicated that males had larger head and limb structures resulting from evolutional and sexual pressures associated with reproduction and male–male competition. The shape dimorphism was found only in forelimbs, and it was male-biased and was related to clasping in amplexus.
This study aimed to describe the morphological characteristics and age structure of a P. ridibundus population sampled from a high altitude. For this purpose, a total of 54 adult frogs (33 males and 21 females) were collected from Şavşat district, Artvin province, Türkiye. The samples were aged based on skeletochronology method. Furthermore, von Bertalanffy growth curve models were constructed using SVL and weight data. To assess sexual size and shape dimorphism, the measurements of 23 different morphological characters were analyzed using univariate and multivariate statistical techniques. The mean SVL and weight were found to be 78.05 mm and 60.87 g for males and 93.95 mm and 109.61 g for females. The mean age was 3.67 years and 4.05 years for males and females, respectively. The maximum age was found to be 6 years for both sexes. Growth curve models revealed a significant relationship between age, SVL, and weight. A clear female-biased sexual size dimorphism was found in all morphological characters. However, SVL-adjusted values indicated that males had larger head and limb structures resulting from evolutional and sexual pressures associated with reproduction and male-male competition. The shape dimorphism was found only in forelimbs, and it was male-biased and was related to clasping in amplexus.This study aimed to describe the morphological characteristics and age structure of a P. ridibundus population sampled from a high altitude. For this purpose, a total of 54 adult frogs (33 males and 21 females) were collected from Şavşat district, Artvin province, Türkiye. The samples were aged based on skeletochronology method. Furthermore, von Bertalanffy growth curve models were constructed using SVL and weight data. To assess sexual size and shape dimorphism, the measurements of 23 different morphological characters were analyzed using univariate and multivariate statistical techniques. The mean SVL and weight were found to be 78.05 mm and 60.87 g for males and 93.95 mm and 109.61 g for females. The mean age was 3.67 years and 4.05 years for males and females, respectively. The maximum age was found to be 6 years for both sexes. Growth curve models revealed a significant relationship between age, SVL, and weight. A clear female-biased sexual size dimorphism was found in all morphological characters. However, SVL-adjusted values indicated that males had larger head and limb structures resulting from evolutional and sexual pressures associated with reproduction and male-male competition. The shape dimorphism was found only in forelimbs, and it was male-biased and was related to clasping in amplexus.
Simple SummaryThe age structure of amphibian populations plays an essential role in understanding population dynamics, potential impacts of environmental change, and conservation status. The Marsh frog Pelopyhlax ridibundus has become a subject of various studies to investigate age structure and body size variation. However, the populations living at high altitudes were paid less attention to while describing life history traits. Here, sexual dimorphic traits, life history characteristics, and relationship between age and body size/weight are presented for a population located at an altitude of over 2000 m. Accordingly, female samples were larger in terms of body size and body weight. However, male-biased dimorphism was observed in the head and forelimbs and was caused by adaptation to reproduction success. Females had greater mean age than males, but the maximum age (i.e., 6 years) was found identical in both sexes.
This study aimed to describe the morphological characteristics and age structure of a population sampled from a high altitude. For this purpose, a total of 54 adult frogs (33 males and 21 females) were collected from Şavşat district, Artvin province, Türkiye. The samples were aged based on skeletochronology method. Furthermore, von Bertalanffy growth curve models were constructed using SVL and weight data. To assess sexual size and shape dimorphism, the measurements of 23 different morphological characters were analyzed using univariate and multivariate statistical techniques. The mean SVL and weight were found to be 78.05 mm and 60.87 g for males and 93.95 mm and 109.61 g for females. The mean age was 3.67 years and 4.05 years for males and females, respectively. The maximum age was found to be 6 years for both sexes. Growth curve models revealed a significant relationship between age, SVL, and weight. A clear female-biased sexual size dimorphism was found in all morphological characters. However, SVL-adjusted values indicated that males had larger head and limb structures resulting from evolutional and sexual pressures associated with reproduction and male-male competition. The shape dimorphism was found only in forelimbs, and it was male-biased and was related to clasping in amplexus.
The age structure of amphibian populations plays an essential role in understanding population dynamics, potential impacts of environmental change, and conservation status. The Marsh frog Pelopyhlax ridibundus has become a subject of various studies to investigate age structure and body size variation. However, the populations living at high altitudes were paid less attention to while describing life history traits. Here, sexual dimorphic traits, life history characteristics, and relationship between age and body size/weight are presented for a population located at an altitude of over 2000 m. Accordingly, female samples were larger in terms of body size and body weight. However, male-biased dimorphism was observed in the head and forelimbs and was caused by adaptation to reproduction success. Females had greater mean age than males, but the maximum age (i.e., 6 years) was found identical in both sexes. This study aimed to describe the morphological characteristics and age structure of a P. ridibundus population sampled from a high altitude. For this purpose, a total of 54 adult frogs (33 males and 21 females) were collected from Şavşat district, Artvin province, Türkiye. The samples were aged based on skeletochronology method. Furthermore, von Bertalanffy growth curve models were constructed using SVL and weight data. To assess sexual size and shape dimorphism, the measurements of 23 different morphological characters were analyzed using univariate and multivariate statistical techniques. The mean SVL and weight were found to be 78.05 mm and 60.87 g for males and 93.95 mm and 109.61 g for females. The mean age was 3.67 years and 4.05 years for males and females, respectively. The maximum age was found to be 6 years for both sexes. Growth curve models revealed a significant relationship between age, SVL, and weight. A clear female-biased sexual size dimorphism was found in all morphological characters. However, SVL-adjusted values indicated that males had larger head and limb structures resulting from evolutional and sexual pressures associated with reproduction and male–male competition. The shape dimorphism was found only in forelimbs, and it was male-biased and was related to clasping in amplexus.
The age structure of amphibian populations plays an essential role in understanding population dynamics, potential impacts of environmental change, and conservation status. The Marsh frog Pelopyhlax ridibundus has become a subject of various studies to investigate age structure and body size variation. However, the populations living at high altitudes were paid less attention to while describing life history traits. Here, sexual dimorphic traits, life history characteristics, and relationship between age and body size/weight are presented for a population located at an altitude of over 2000 m. Accordingly, female samples were larger in terms of body size and body weight. However, male-biased dimorphism was observed in the head and forelimbs and was caused by adaptation to reproduction success. Females had greater mean age than males, but the maximum age (i.e., 6 years) was found identical in both sexes.
Audience Academic
Author Gül, Serkan
Büyüksofuoğlu, Sümeyye
Özdemir, Nurhayat
Dursun, Cantekin
Tabak, Ceren
AuthorAffiliation 2 Department of Biology, Faculty of Science, Karadeniz Technical University, 61080 Trabzon, Türkiye; nurhayat@ktu.edu.tr
1 Department of Biology, Faculty of Arts and Sciences, Recep Tayyip Erdoğan University, 53100 Rize, Türkiye; serkan.gul@erdogan.edu.tr (S.G.); ceren_tabak21@erdogan.edu.tr (C.T.); sumeyye_buyuksofuoglu20@erdogan.edu.tr (S.B.)
AuthorAffiliation_xml – name: 2 Department of Biology, Faculty of Science, Karadeniz Technical University, 61080 Trabzon, Türkiye; nurhayat@ktu.edu.tr
– name: 1 Department of Biology, Faculty of Arts and Sciences, Recep Tayyip Erdoğan University, 53100 Rize, Türkiye; serkan.gul@erdogan.edu.tr (S.G.); ceren_tabak21@erdogan.edu.tr (C.T.); sumeyye_buyuksofuoglu20@erdogan.edu.tr (S.B.)
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BackLink https://www.ncbi.nlm.nih.gov/pubmed/39595282$$D View this record in MEDLINE/PubMed
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weight
Anatolia
von Bertalanffy
shape
life history
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SSID ssj0000753151
Score 2.3174071
Snippet This study aimed to describe the morphological characteristics and age structure of a P. ridibundus population sampled from a high altitude. For this purpose,...
This study aimed to describe the morphological characteristics and age structure of a population sampled from a high altitude. For this purpose, a total of 54...
The age structure of amphibian populations plays an essential role in understanding population dynamics, potential impacts of environmental change, and...
Simple SummaryThe age structure of amphibian populations plays an essential role in understanding population dynamics, potential impacts of environmental...
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pubmedcentral
proquest
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pubmed
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SourceType Open Website
Open Access Repository
Aggregation Database
Index Database
StartPage 3230
SubjectTerms Age
Altitude
Amphibians
Anatolia
Body weight
Females
Frogs
Habitats
life history
Males
marsh frog
Morphology
Population biology
Population decline
Reptiles & amphibians
shape
Variables
von Bertalanffy
weight
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Title Age Structure, Body Size, and Sexual Dimorphism in a High-Altitude Population of Pelophylax ridibundus (Pallas, 1771)
URI https://www.ncbi.nlm.nih.gov/pubmed/39595282
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https://pubmed.ncbi.nlm.nih.gov/PMC11590990
https://doaj.org/article/a6d9de8e5d1c4e439b0ce89fa513c689
Volume 14
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