Age, Growth, and Fertility in Terentiev’s Frog (Pelophylax terentievi, Amphibia, Ranidae)

Kidov, A. A.; Ivolga, R. A.; Kondratova, T. E.; Ivanov, A. A.

doi:10.1134/s1062359023080125

Cited by 3 publications

(1 citation statement)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pelophylax terentievi typically occurs in rice paddies, rivers, and ponds and emerges from hibernation around April [147]. This species reaches sexual maturity at the age of three or four years, and each female spawns between 138 and 3317 eggs [149]. The species occurs at elevations between 400 and 822 m a.s.l.…”

Section: Ecologymentioning

confidence: 99%

Understanding the Distribution, Behavioural Ecology, and Conservation Status of Asian Pelophylax

Amin,

Borzée

2024

Diversity

View full text Add to dashboard Cite

Understanding species from an ecological and phylogenetic perspective facilitates an understanding of their conservation status in relation to the changing world. The frog genus Pelophylax is among the largest in terms of amphibian biomass in the Palearctic, but species have not been thoroughly studied at the Asian continental scale. The phylogeographic relationship, behavioural ecology, and ecological requirements within the genus need clarification, despite generally good local coverage. Here, for the first time, we conducted a literature review focused on phylogeography and behavioural ecology, supported by ecological niche modelling of twelve Asian Pelophylax lineages. Finally, we compiled the known threats for each of the lineages. We first determined the presence of twelve species and species-candidate lineages. In terms of behavioural ecology, the main difference among lineages is the time to metamorphosis and the time to reach sexual maturity. The ecological models highlighted a match between the known presence of each clade and their suitable habitat and highlighted the Syr Darya drainage on the eastern shore of the Caspian Sea for the non-described Pelophylax “Syr Darya lineage”. Finally, we highlighted the greatest variation among lineages in terms of threats, as some lineages are threatened by numerous factors, whereas others are expanding.

show abstract

Section: Ecologymentioning

confidence: 99%

Understanding the Distribution, Behavioural Ecology, and Conservation Status of Asian Pelophylax

Amin,

Borzée

2024

Diversity

View full text Add to dashboard Cite

show abstract

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

Gül,

Dursun,

Tabak

et al. 2024

Animals

View full text Add to dashboard Cite

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.

show abstract

Age structure of the Japanese treefrog – <i>Dryophytes japonicus</i> (Amphibia, Anura, Hylidae) in the south of the Primorsky krai (Russian Far East)

Kidov,

Ivolga,

Kondratova

2024

Povolžskij èkologičeskij žurnal

View full text Add to dashboard Cite

The article presents the results of age structure studying in a population of the Japanese treefrog (Dryophytes japonicus) by skeletochronology. Animals were caught in the vicinity of Fokino town and Dunay settlement (Primorsky Krai, Russian Federation) in the third decade of July, 2022–2023. Cross sections of a finger’s phalanges were used as a registering structure. To es- timate age, preparations from 59 individuals (12 females and 47 males) were used. The body length of females and males was in a range of 29.40–44.80 mm (on average 38.50 ± 5.69) and 34.16–44.16 mm (on average 38.30 ± 2.36), respectively. The age of females and males varied in a range of 1–4 years (on average 2.7 ± 1.3) and 1–5 years (on average 2.2 ± 1.1), respectively. The modal age in females and males was 4 years (41.6 % of all studied individuals) and 1–2 years (63.8 %), respectively. The average age of males and females did not differ statistically significant- ly. Body length depended on age, in both females (r = 0.82, p < 0.05) and males (r = 0.54, p < 0.05). The expectancy longevity in females and males was 4.41 years (S = 0.744) and 3.76 years (S = 0.693), respectively. The growth of males stops after reaching puberty. Females continue to grow after maturation; that is why the most adult individuals are the largest ones. The growth rate coefficient (k) was higher in males (2.22) than in females (0.89). The authors note that in the south of the Primorsky Krai, D. japonicus is characterized by the minimum age of puberty and life longevity among all studied populations.

show abstract

Age, Growth, and Fertility in Terentiev’s Frog (Pelophylax terentievi, Amphibia, Ranidae)

Cited by 3 publications

References 27 publications

Understanding the Distribution, Behavioural Ecology, and Conservation Status of Asian Pelophylax

Understanding the Distribution, Behavioural Ecology, and Conservation Status of Asian Pelophylax

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

Age structure of the Japanese treefrog – <i>Dryophytes japonicus</i> (Amphibia, Anura, Hylidae) in the south of the Primorsky krai (Russian Far East)

Contact Info

Product

Resources

About