scholarly journals Age Determination in Two Populations of the Snake-eyed Lizard (Ophisops elegans) (Sauria: Lacertidae) at Different Altitudes

2017 ◽  
Vol 2 (1) ◽  
pp. 11-14
Author(s):  
ABDULLAH ALTUNIŞIK ◽  
TUĞBA ERGÜL KALAYCI ◽  
İBRAHİM UYSAL ◽  
MURAT TOSUNOĞLU ◽  
NURHAYAT ÖZDEMİR
Keyword(s):  
Age Determination ◽  
Two Populations ◽  
Different Altitudes ◽  
Ophisops Elegans

Thermal ecophysiology of Basiliscus galeritus (Squamata: Corytophanidae) in two populations at different altitudes: Does the crest participate actively in thermoregulation?

2021 ◽  
pp. 102980
Author(s):  
Luis A. Rodriguez-Miranda ◽  
Luis E. Lozano-Aguilar ◽  
Marco Altamirano-Benavides ◽  
Fausto R. Méndez-De la Cruz
Keyword(s):  
Two Populations ◽  
Different Altitudes

scholarly journals Skeletochronological Age Determination and Comparative Demographic Analysis of Two Populations of the Gold-spotted Pond Frog (Rana chosenica)

2007 ◽  
Vol 30 (1) ◽  
pp. 57-62 ◽  
Author(s):  
Seok-Wan Cheong ◽  
Dae-Sik Park ◽  
Ha-Cheol Sung ◽  
Jung-Hyun Lee ◽  
Shi-Ryong Park
Keyword(s):  
Age Determination ◽  
Demographic Analysis ◽  
Two Populations

Age structure and body size of two populations of the rice frogRana limnocharisfrom different altitudes

2011 ◽  
Vol 78 (2) ◽  
pp. 215-221 ◽  
Author(s):  
Wen Bo Liao ◽  
Xin Lu ◽  
Yue Wu Shen ◽  
Jin Chu Hu
Keyword(s):  
Body Size ◽  
Age Structure ◽  
Two Populations ◽  
Different Altitudes

Differences in the Age of Pacific Hake (Merluccius productus) Using Whole Otoliths and Sections of Otoliths

1979 ◽  
Vol 36 (2) ◽  
pp. 141-151 ◽  
Author(s):  
R. J. Beamish
Keyword(s):  
Key Words ◽  
Age Determination ◽  
Otolith Growth ◽  
Strait Of Georgia ◽  
Merluccius Productus ◽  
Key Words Age ◽  
Two Populations

Ages determined for older Pacific hake from sections through the nucleus of otoliths were older than the ages determined from the otolith surface for the two populations studied. Growth of all parts of the otolith was not identical throughout the life of the fish. The change in the pattern of otolith growth occurred about the age at which the growth in length of the fish was reduced. Despite the disproportionate growth in length and height of the otolith, the thickness of the otolith, especially in the ventral interior portion, continued to increase with age. Section ages appear to be more reliable for older fish because of this allometric change in otolith growth with increasing fish age. It is suggested that the examination of sections of otoliths should become a routine approach in any attempt to age fish using otoliths. Key words: age determination, otolith, otolith section, otolith growth, aging errors, Pacific hake, Strait of Georgia

Survival, Age-Determination and Population Age Structure of the Common Ringtail Possum, Pseudocheirus-Peregrinus, in a Eucalyptus Woodland and a Leptospermum Thicket in Southern Victoria

1987 ◽  
Vol 35 (6) ◽  
pp. 625 ◽  
Author(s):  
LI Pahl
Keyword(s):  
Age Determination ◽  
Growth Curves ◽  
Tooth Wear ◽  
Adult Males ◽  
Lower Survival ◽  
Average Rainfall ◽  
Pseudocheirus Peregrinus ◽  
Drought Survival ◽  
Two Populations ◽  
Ringtail Possum

Juvenile ringtail possums in two populations were aged by comparison with growth curves based on head length and body weight, and adults were aged by comparing the degree of tooth wear with that of ringtails of known age. Survival to the end of pouch life, 3 months old, appeared high but dropped markedly thereafter. During years of 'average' rainfall, 26-80% of all offspring lived to the age of weaning (6 months), but as few as 6% survived to weaning in a year of drought. Approximately 30% survived to sexual maturity (1 year) during years of 'average' rainfall, compared with 2% during a drought. Survival of adult females was higher than that of adult males, and ringtails at Sandy Point (Leptospermum thicket) appeared to survive longer than ringtails at Lysterfield (Eucalyptus woodland). The lower survival of adult ringtails at Lysterfield was associated with higher rates of tooth wear, possibly due to their more abrasive diet, but may have also been influenced by the hotter climate at Lysterfield. The lower survival of ringtails at Lysterfield resulted in a population with a greater proportion of 1-year-old animals than in the Sandy Point population.

Body size and age structure of Pelophylax ridibundus populations from two different altitudes in Turkey

2011 ◽  
Vol 32 (2) ◽  
pp. 287-292 ◽  
Author(s):  
Bilal Kutrup ◽  
Kurtuluş Olgun ◽  
Nurhayat özdemir ◽  
Nazan üzüm ◽  
Serkan Gül
Keyword(s):  
Body Size ◽  
Age Structure ◽  
Significant Relationship ◽  
Sexual Size Dimorphism ◽  
The Other ◽  
Size Dimorphism ◽  
Pelophylax Ridibundus ◽  
Size And Age Structure ◽  
Two Populations ◽  
Different Altitudes

AbstractWe estimated differences in body size and age structure of two populations of Pelophylax ridibundus living at different altitudes in Turkey, one from Dörtyol (6 m a.s.l.) and the other from Karagöl (1480 m a.s.l.). Their age structure was determined by skeletochronology performed on the LAGs (lines of arrested growth) of the phalanges. While ages ranged from 2 to 8 years for males and from 2 to 7 years for females in Karagöl, in Dörtyol the ages ranged from 4 to 11 years for males, and 3 to 7 years for females. Sexual size dimorphism was only found in the Dörtyol population. Larger females tend to be found in hotter climates (Dörtyol) but reach maturity later (3-4 years) than the highland population (2 years). A significant relationship between age and snout-vent length (SVL) was found for both sexes and populations with the exception of females in Dörtyol.

Age, growth and survival rate in two populations of Darevskia derjugini (Nikolsky, 1898) from different altitudes (Squamata: Sauria: Lacertidae)

2020 ◽  
pp. 1-15
Author(s):  
Abdullah Altunışık ◽  
Halit Eksilmez
Keyword(s):  
Body Size ◽  
Survival Rate ◽  
Life Expectancy ◽  
Age Structure ◽  
Sexual Maturity ◽  
Adult Life ◽  
Growth And Survival ◽  
Low Altitude ◽  
Two Populations ◽  
Different Altitudes

Abstract We investigated age structure, age at sexual maturity, lifespan, growth and survival rate and adult life expectancy (as demographic life-history traits) as well as body size of two Darevskia derjugini (Artvin lizard) populations from different altitudes, using skeletochronology. Our findings indicated that age upon attaining sexual maturity was two or three years in the low-altitude population (Fındıklı) while it was three years in the high-altitude population (Murgul) for both sexes. The maximum longevity was seven years in the high-elevation site while it was six years in the low-elevation site. As reported for many lizards, we found a significant positive relationship between age and body size within each sex of Artvin lizard at both altitudes. High- and low-altitude populations did not differ in age structure, survival rates, adult life expectancy and body size. Rather than the effect of altitude, which is hard to compare without replication of other low and high altitude populations, the fact that these two populations have similar growth rates and the similarity of local conditions (food availability and predator density) may indicate similarity between the two regions.

Sign in / Sign up

Export Citation Format

Share Document