Body size, age structure and survival rates in two populations of the Beyşehir frog Pelophylax caralitanus

Arısoy, Ayşen Günay; Başkale, Eyup

doi:10.3897/herpetozoa.32.e35772

Cited by 8 publications

(8 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Longevity (maximum lifespan) was estimated according to Otero et al (2017) as the maximum number of LAGs counted in adults. To estimate age at sexual maturity, we used a combination of three methods (average of all three methods): 1. the smallest distance between two subsequent LAG (Ryser 1998); 2. the minimum number of LAG counted in breeding individuals (Otero et al 2017); and 3. lowest age recorded amongst the breeding individuals (Arisoy & Başkale 2019).…”

Section: Methodsmentioning

confidence: 81%

Life-history traits and the first demographic data of Iranian population of the West Asian Lemon-Yellow Tree Frog, Hyla savignyi (Audouin, 1827)

Alaei

Pesarakloo

Najibzadeh

et al. 2021

Acta Zool. Acad. Sci. Hung.

View full text Add to dashboard Cite

The life-history of an organism consists of its lifetime pattern of growth, development, storage, age, and reproduction. In this study, some life-history traits of Hyla savignyi were studied in populations from different parts of Iran. The microscopic and macroscopic analysis showed that testicular activity in H. savignyi is potentially continuous, reaching its peak level in April. Metamorphosis was completed in approximately 102 days after egg deposition, and body size at metamorphosis was 10 mm. Significant sexual size dimorphism was present in all populations, and a larger female asymptotic body size was observed (43.07 mm for females vs 41.16 mm for males). The adult survival rate (S) and life expectancy (ESP) were the same for both sexes (S = 0.73 and ESP = 4.2 years). Age and body size were positively correlated with each other for both females and males. Maximum longevity was recorded to be six years in both females and males, and ages of sexual maturity were estimated to be two or three years in breeding individuals. The adult sample age ranged from two to six years (mean age of females: 4.40±0.68 years; males: 3.63±0.13 years). Our data confirm the general patterns of body size variation and mean age in anurans and show that females are larger than males and live longer.

show abstract

Section: Methodsmentioning

confidence: 81%

Life-history traits and the first demographic data of Iranian population of the West Asian Lemon-Yellow Tree Frog, Hyla savignyi (Audouin, 1827)

Alaei

Pesarakloo

Najibzadeh

et al. 2021

Acta Zool. Acad. Sci. Hung.

View full text Add to dashboard Cite

show abstract

“…The annual growth rate (AGR) is the rate of the difference between the mean SVL of the individuals in each age group i and the mean SVL in each age group i-1. It is calculated according to the formula used previously for amphibians (Erişmiş, 2018;Arısoy & Başkale, 2019):…”

Section: Discussionmentioning

confidence: 99%

“…The annual accumulated calcium layers in the finger bones were mostly used to determine the age of both anuran and urodelan species (e.g. Miaud et al, 1993Miaud et al, , 2000Cvetković et al, 1996;Guarino et al, 1999;Coğalniceanu & Miaud, 2003;Jakob et al, 2003;Olgun et al, 2005;Yılmaz et al, 2005;Başkale et al, 2018;Arısoy & Başkale, 2019).…”

Section: Introductionmentioning

confidence: 99%

Age determination and growth parameters of Triturus anatolicus (Caudata: Salamandridae)

Özyılmaz

Başkale

2021

Nature Conservation Research

Self Cite

View full text Add to dashboard Cite

This study presents data on the demographic structure of Triturus anatolicus in Torkul Lake in the Province of Düzce, Turkey. Field studies were conducted during the peak of the reproductive season from 2017 to 2019. A total of 51 samples (phalangeal bones from 13 males, 35 females and three sub-adults) were collected to determine the demographic structure of the population by skeletochronology. Snout-vent length (SVL) was 72.03 ± 2.79 mm (min-max: 67-78 mm) in males and 73.12 ± 4.59 mm (min-max: 63-84 mm) in females, where the difference was not statistically significant. The sexual dimorphism index was 0.01 and it was found to be female-biased. The mean age of females was 5.94 ± 1.85 years and the mean age of males was 5.77 ± 1.79 years. The minimum reproductive age was three years in both sexes. The maximum observed age was ten years for females and nine years for males. Our results were compared with literature data, and Triturus anatolicus showed a similar pattern on agestructure with cognate species. We found that the high survival rates of the Torkul Lake population (female = 0.81; male = 0.77) may result from a low human interference and favourable climatic conditions.

show abstract

“…Various researchers have reported that males reach sexual maturity a year earlier than females (Altunışık, 2018b; Özdemir et al, 2012; Sinsch et al, 2007; Smirina, 1994). Males and females have also been reported to simultaneously attain sexual maturity (Altunışık, 2018a; Arısoy & Başkale, 2019; Leskovar, Sanuy, Oromi, & Sinsch, 2006). Similar to the Georgian population (Gokhelashvili & Tarkhnishvili, 1994), males reached maturity 1 year earlier than females (2–3 years vs. 3–4 years) in our studied populations.…”

Section: Discussionmentioning

confidence: 99%

“…Skeletochronology has been used by many researchers, since it does not require animals to be sacrificed and saves time (Altunışık, 2018a; Arısoy & Başkale, 2019; Bülbül et al, 2018,b; Erismis, 2018; Lyapkov, Kidov, Stepankova, Afrin, & Litvinchuk, 2020; Özdemir et al, 2012; Sinsch, 2015). Skeletochronological analysis involves counting the dark‐stained rings, which represent the lines of arrested growth (LAG) that occur as a consequence of reduced bone growth in the winter season.…”

Section: Methodsmentioning

confidence: 99%

Impact of various ecological parameters on the life‐history characteristics of Bufotes viridis sitibundus from Turkey

Altunışık

Gül

Özdemır

2020

The Anatomical Record

View full text Add to dashboard Cite

In this study, we used the skeletochronology method to estimate various growth parameters, such as age structure, minimum and maximum life span, age of sexual maturity, and the relationship between body size and weight of eight different populations of the variable toad, Bufotes viridis sitibundus, in Turkey. Further, we determined the relationship between these parameters and ecologic factors using the partial Mantel test. A significant difference was found among the populations with respect to age, body size, and body weight in both males and females. On average, the maximum life span was recorded as 10 years for males and 11 years for females. In the studied populations, the average age of sexual maturity ranged between 2 and 4 years for both sexes. Sexual dimorphism in terms of snout‐vent length (SVL) was not observed between males and females in all the populations. Toads from the higher altitudes tended to be significantly larger, older, and heavier than those from lower altitudes. We concluded that altitude and temperature have an impact on the growth rate, body size, and body mass.

show abstract

Body size, age structure and survival rates in two populations of the Beyşehir frog Pelophylax caralitanus

Cited by 8 publications

References 23 publications

Life-history traits and the first demographic data of Iranian population of the West Asian Lemon-Yellow Tree Frog, Hyla savignyi (Audouin, 1827)

Life-history traits and the first demographic data of Iranian population of the West Asian Lemon-Yellow Tree Frog, Hyla savignyi (Audouin, 1827)

Age determination and growth parameters of Triturus anatolicus (Caudata: Salamandridae)

Impact of various ecological parameters on the life‐history characteristics of Bufotes viridis sitibundus from Turkey

Contact Info

Product

Resources

About