Sexual size and shape dimorphism in a population of blue-tailed skinks of the genus Plestiodon (Scincidae)
Por:
Feria-Ortiz, Manuel, Perez-Malvaez, Carlos, Bribiesca-Escutia, Guadalupe, Ramírez-Morales E.A.
Publicada:
1 sep 2021
Categoría:
Agricultural and biological sciences (miscellaneous)
Resumen:
In this study, we investigated sexual dimorphism in body size
(snout-vent length) and morphological traits (head, neck, trunk, and
limbs) in a population of skinks belonging to a newly discovered species
of genus Plestiodon. In addition, we determined the allometric
trajectories of body traits that showed sexual dimorphism and discussed
their importance in the expression of the sexual differences found. A
Student's t-test was performed to detect different significant in the
SVL and a multivariate approach was followed to investigate sexual
dimorphism in the other characters examined. Reduced major axis
regression (SMA) were used to determine the corresponding allometric
trajectories. No sexual dimorphism was detected in the snout-vent length
and body mass. The length and width of the head, the length of the neck
and the length of the hind limbs were greater in males than in females;
by contrast, the opposite pattern was found in the case of trunk length.
Isometric relationships were detected, as well as positive and negative
allometric relationships between the traits analyzed. However, only
sexual dimorphism in the head width was affected by their growth
trajectories.
Filiaciones:
Feria-Ortiz, Manuel:
Museo de Zoología, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, Batalla 5 de Mayo s/n, Col. Ejército de Oriente, Ciudad de México, 09230, Mexico
Perez-Malvaez, Carlos:
Museo de Zoología, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, Batalla 5 de Mayo s/n, Col. Ejército de Oriente, Ciudad de México, 09230, Mexico
Bribiesca-Escutia, Guadalupe:
Museo de Zoología, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, Batalla 5 de Mayo s/n, Col. Ejército de Oriente, Ciudad de México, 09230, Mexico
Ramírez-Morales E.A.:
Museo de Zoología, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, Batalla 5 de Mayo s/n, Col. Ejército de Oriente, Ciudad de México, 09230, Mexico
gold, All Open Access; Gold
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