GONADAL COMPARISON BETWEEN MORPHS OF MALES Sceloporus minor LIZARD IN A POPULATION OF CENTRAL MEXICO
Studies have found that polymorphism in a population of the lizard Sceloporus minor from central Mexico is not maintained by niche partitioning, thus leaving open the possibility that the polymorphism is being maintained by frequency-dependent selection or by variation in reproductive potential. Therefore, the objective of this study is to make a gross gonadal comparison between males of the yellow and red morphs of the lizard S. minor from a population (El Enzuelado) of the state of Hidalgo, Mexico. The results indicate that there are no significant differences in the volume and weight of the testicles in any of the years analyzed. Also, no significant differences were recorded in the weight of the liver or of the fat body. On the other hand, significant differences were recorded in the volume and weight of the testicles among different seasons of the year for both morphs. The lack of significant variation in testis size between morphs recorded in this study indirectly indicates that the two morphs have similar reproductive potential, and therefore the hypothesis that frequency-dependent selection is the force that maintains polymorphism in this population becomes more plausible.
| Main Authors: | , , , |
|---|---|
| Format: | Digital revista |
| Language: | eng |
| Published: |
Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Departamento de Biología
2024
|
| Online Access: | https://revistas.unal.edu.co/index.php/actabiol/article/view/106051 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|