Reproductive effort in two viviparous species of blue-tailed skinks (Squamata: Scincidae: Plestiodon) from Mexico
The relative allocation of energy organisms devote to reproductive processes (aka reproductive effort) constitutes a central topic in life history theory. We document some aspects of the reproductive ecology and investment of 2 viviparous skinks of the genus Plestiodon from Mexico: an undescribed s...
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| Format: | Article |
| Language: | English |
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Universidad Nacional Autónoma de México
2023-02-01
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| Series: | Revista Mexicana de Biodiversidad |
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| Online Access: | https://revista.ib.unam.mx/index.php/bio/article/view/3999 |
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| author | Francisco Javier Muñoz-Nolasco Diego Miguel Arenas-Moreno Daniel Cruz-Sáenz Fausto Roberto Méndez-de la Cruz |
| author_facet | Francisco Javier Muñoz-Nolasco Diego Miguel Arenas-Moreno Daniel Cruz-Sáenz Fausto Roberto Méndez-de la Cruz |
| author_sort | Francisco Javier Muñoz-Nolasco |
| collection | DOAJ |
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The relative allocation of energy organisms devote to reproductive processes (aka reproductive effort) constitutes a central topic in life history theory. We document some aspects of the reproductive ecology and investment of 2 viviparous skinks of the genus Plestiodon from Mexico: an undescribed species previously assigned to P. brevirostris
(Plestiodon sp., La Malinche, Tlaxcala, 2,700-3,000 m) and P. dugesii (2 populations, Mazamitla and Tapalpa, Jalisco; 2,400-2,500 m). We used relative litter mass (RLM) as a measure of reproductive effort and calculated a body condition index (BCI) as a proxy of the energy status of non-pregnant females, post-parturient females, and neonates. There were no differences in any of the reproductive characteristics between the 2 populations of P. dugesii. Both species lacked sexual size dimorphism, and female body size did not influence RLM, litter size nor litter mass. However, female BCI influenced RLM and, in P. dugesii, a larger litter size correlated with a lower BCI of neonates. Despite their overall similarities in reproductive investment, there seem to be differential selective pressures shaping offspring
characteristics of these 2 lizard species.
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| format | Article |
| id | doaj-art-e5423b778be3484aba6a7b3545058e90 |
| institution | DOAJ |
| issn | 1870-3453 2007-8706 |
| language | English |
| publishDate | 2023-02-01 |
| publisher | Universidad Nacional Autónoma de México |
| record_format | Article |
| series | Revista Mexicana de Biodiversidad |
| spelling | doaj-art-e5423b778be3484aba6a7b3545058e902025-08-20T02:59:10ZengUniversidad Nacional Autónoma de MéxicoRevista Mexicana de Biodiversidad1870-34532007-87062023-02-019410.22201/ib.20078706e.2023.94.3999Reproductive effort in two viviparous species of blue-tailed skinks (Squamata: Scincidae: Plestiodon) from MexicoFrancisco Javier Muñoz-Nolasco0Diego Miguel Arenas-Moreno1Daniel Cruz-Sáenz2Fausto Roberto Méndez-de la Cruz3Universidad Nacional Autónoma de México.Universidad Autónoma de GuerreroUniversidad de GuadalajaraUniversidad Nacional Autónoma de México The relative allocation of energy organisms devote to reproductive processes (aka reproductive effort) constitutes a central topic in life history theory. We document some aspects of the reproductive ecology and investment of 2 viviparous skinks of the genus Plestiodon from Mexico: an undescribed species previously assigned to P. brevirostris (Plestiodon sp., La Malinche, Tlaxcala, 2,700-3,000 m) and P. dugesii (2 populations, Mazamitla and Tapalpa, Jalisco; 2,400-2,500 m). We used relative litter mass (RLM) as a measure of reproductive effort and calculated a body condition index (BCI) as a proxy of the energy status of non-pregnant females, post-parturient females, and neonates. There were no differences in any of the reproductive characteristics between the 2 populations of P. dugesii. Both species lacked sexual size dimorphism, and female body size did not influence RLM, litter size nor litter mass. However, female BCI influenced RLM and, in P. dugesii, a larger litter size correlated with a lower BCI of neonates. Despite their overall similarities in reproductive investment, there seem to be differential selective pressures shaping offspring characteristics of these 2 lizard species. https://revista.ib.unam.mx/index.php/bio/article/view/3999 Life-history traitsRelative litter massTrade-offBody condition index |
| spellingShingle | Francisco Javier Muñoz-Nolasco Diego Miguel Arenas-Moreno Daniel Cruz-Sáenz Fausto Roberto Méndez-de la Cruz Reproductive effort in two viviparous species of blue-tailed skinks (Squamata: Scincidae: Plestiodon) from Mexico Revista Mexicana de Biodiversidad Life-history traits Relative litter mass Trade-off Body condition index |
| title | Reproductive effort in two viviparous species of blue-tailed skinks (Squamata: Scincidae: Plestiodon) from Mexico |
| title_full | Reproductive effort in two viviparous species of blue-tailed skinks (Squamata: Scincidae: Plestiodon) from Mexico |
| title_fullStr | Reproductive effort in two viviparous species of blue-tailed skinks (Squamata: Scincidae: Plestiodon) from Mexico |
| title_full_unstemmed | Reproductive effort in two viviparous species of blue-tailed skinks (Squamata: Scincidae: Plestiodon) from Mexico |
| title_short | Reproductive effort in two viviparous species of blue-tailed skinks (Squamata: Scincidae: Plestiodon) from Mexico |
| title_sort | reproductive effort in two viviparous species of blue tailed skinks squamata scincidae plestiodon from mexico |
| topic | Life-history traits Relative litter mass Trade-off Body condition index |
| url | https://revista.ib.unam.mx/index.php/bio/article/view/3999 |
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