NDLTD Global ETD Search
  • Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 4
  • 2
  • 2
  • 2
  • 1
  • Tagged with
  • 12
  • 7
  • 5
  • 4
  • 4
  • 3
  • 3
  • 3
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

Search results

Showing 11 to 12 of 12 (0.017 seconds)

Spelling suggestions: "subject:"dicta"" "subject:"picas""

11

A Population Demographic of Midland Painted Turtles (<i>Chrysemys picta marginata</i>) in Conrad Balliet Family Nature Preserve Pond

Vogt, Leah 03 August 2023 (has links)
No description available.
Biology
Ecology
Environmental Science
Environmental Studies
Conservation
Wildlife Conservation
Wildlife Management
Zoology
Animal Sciences
Animals
Painted turtle
Chrysemys picta
Midland painted turtle
Chrysemys picta marginate
Ohio
freshwater turtles
Clark County, Ohio
turtles
mark-recapture study
12

Vliv steroidních hormonů na pohlavně dimorfní růst kostí gekonů / The effect of steroid hormones on sexually dimorphic bone growth in geckos

Tureček, Adam January 2017 (has links)
The sexual size dimorphism (SSD) is widespread among animals but proximate mechanisms of its ontogeny are still poorly understood even in important groups of vertebrates such as reptiles. Previous experiments in geckos showed that growth of both sexes slows substantially at their older age. Their SSD develops considerably a long time after sexual maturity, it is associated with earlier growth deceleration in the smaller sex and it is controlled by ovarian rather than testicular steroids. The aim of the thesis was to explore the previous knowledge by studying the ontogenesis of the sexually-dimorphic bone growth of the gecko Paroedura picta, the male- larger species with the most explored proximate mechanisms of SSD among geckos. I was most interested in the ontogeny of the growth plates activity and the epiphyseal ossification of the femur in both sexes and their relationship to age, body length, gonadal activity and levels of sex-specific steroids (estradiol and testosterone). The results show that P. picta has determinate growth and that epiphyseal ossification does not contribute to the SSD. The femoral growth plates close at the same age in both sexes; however, their closure occurs at smaller body length in females than in males. In the context of this and the previous studies, estradiol or other...

Page generated in 0.0208 seconds