Results 21 to 30 of about 5,260 (219)

Common lizards break Dollo’s law of irreversibility: genome-wide phylogenomics support a single origin of viviparity and re-evolution of oviparity [PDF]

, 2018
Dollo’s law of irreversibility states that once a complex trait has been lost in evolution, it cannot be regained. It is thought that complex epistatic interactions and developmental constraints impede the re-emergence of such a trait.
Elmer, Kathryn R., Kamenos, Nick, Recknagel, Hans   +2 more
core   +1 more source

Viviparous mothers impose stronger glucocorticoid‐mediated maternal stress effects on their offspring than oviparous mothers

Ecology and Evolution, 2021
Maternal stress during gestation has the potential to affect offspring development via changes in maternal physiology, such as increases in circulating levels of glucocorticoid hormones that are typical after exposure to a stressor.
Kirsty J. MacLeod, Geoffrey M. While, Tobias Uller   +2 more
doaj   +1 more source

Sceloporus slevini [PDF]

, 2003
Number of Pages: 6Integrative BiologyGeological ...
Chiszar, David, Smith, Hobart M., Watkins-Colwell, Gregory J.   +2 more
core   +1 more source

Phylogenetic relationships of African Caecilians (Amphibia: Gymnophiona): insights from mitochondrial rRNA gene sequences [PDF]

, 2003
Africa (excluding the Seychelles) has a diverse caecilian fauna, including the endemic family Scolecomorphidae and six endemic genera of the more cosmopolitan Caeciliidae.
Duellman W.E., Gower D.J., Hillis D.M., Loveridge A., Nussbaum R.A., Nussbaum R.A., Nussbaum R.A., Nussbaum R.A., Parker H.W., Robinson M., Shimodaira H., Swofford D.L., Tamura K., Taylor E.H., Wilkinson M.   +14 more
core   +1 more source

Sceloporus megalepidurus [PDF]

, 2006
Number of Pages: 5Integrative BiologyGeological ...
Chiszar, David, Liner, Ernest A., Mendoza-Quijano, Fernando, Perez-Higareda, Gonzalo, Smith, Hobart M.   +4 more
core   +1 more source

High Degree of Multiple Paternity and Reproductive Skew in the Highly Fecund Live-Bearing Fish Poecilia gillii (Family Poeciliidae)

Frontiers in Ecology and Evolution, 2020
Multiple paternity is a common phenomenon within the live-bearing fish family Poeciliidae. There is a great variety in brood sizes of at least two orders-of-magnitude across the family.
Myrthe L. Dekker, Andres Hagmayer, Karen M. Leon-Kloosterziel, Andrew I. Furness, Bart J. A. Pollux   +4 more
doaj   +1 more source

Características histológicas del útero de Sympterygia acuta (Garman, 1877) y Sympterygia bonapartii (Müller & Henle, 1841) (Chondrichthyes; Rajidae) [PDF]

, 2013
Los condrictios constituyen un clado sumamente conservado y vulnerable a la explotación, que ha cobrado una importancia creciente en los últimos años. Sin embargo, existe poca información sobre los aspectos morfológicos relacionados con la reproducción ...
Díaz Andrade, María Constanza, Galíndez, Elena Juana, Lopez Cazorla, Andrea Cecilia   +2 more
core   +1 more source

Sceloporus jalapae [PDF]

, 2008
Number of Pages: 5Integrative BiologyGeological ...
Chiszar, David, Flores-Villela, Oscar, Liner, Ernest A., Smith, Hobart M.   +3 more
core   +1 more source

Laemanctus [PDF]

, 2004
Number of Pages: 2Integrative BiologyGeological ...
Köhler, Gunther, McCranie, James R.
core   +1 more source

The complete mitochondrial genome of Eremias yarkandensis (Reptilia, Squamata, Lacertidae) from Kyrgyzstan

Mitochondrial DNA. Part B. Resources, 2022
The Yarkand racerunner, Eremias yarkandensis Blandford, 1875, is only distributed in China and Kyrgyzstan. Its complete mitogenome was determined by next-generation sequencing for the first time.
Song Wang, Jinlong Liu, Marina A. Chirikova, Bin Zhang, Xianguang Guo   +4 more
doaj   +1 more source