scholarly journals Are evolutionary transitions in sexual size dimorphism related to sex determination in reptiles?

2021 ◽  
Vol 34 (4) ◽  
pp. 594-603
Author(s):  
Gergely Katona ◽  
Balázs Vági ◽  
Zsolt Végvári ◽  
András Liker ◽  
Robert P. Freckleton ◽  
...  
Keyword(s):  
Sex Determination ◽  
Sexual Size Dimorphism ◽  
Evolutionary Transitions ◽  
Size Dimorphism

scholarly journals Sexual Size Dimorphism and Morphological Sex Determination in the Black-billed Magpie in South Korea (Pica pica sericea)

2007 ◽  
Vol 30 (2) ◽  
pp. 195-199 ◽  
Author(s):  
Sang-Im Lee ◽  
Hyun-Joo Jang ◽  
Soo-Hyung Eo ◽  
Jae-Chun Choe
Keyword(s):  
South Korea ◽  
Sex Determination ◽  
Sexual Size Dimorphism ◽  
Pica Pica ◽  
Size Dimorphism

scholarly journals Much more than a clasp: evolutionary patterns of amplexus diversity in anurans

2020 ◽  
Vol 129 (3) ◽  
pp. 652-663 ◽  
Author(s):  
Juan D Carvajal-Castro ◽  
Yelenny López-Aguirre ◽  
Ana María Ospina-L ◽  
Juan C Santos ◽  
Bibiana Rojas ◽  
...  
Keyword(s):  
Morphological Traits ◽  
Sexual Size Dimorphism ◽  
Phylogenetic Signal ◽  
Evolutionary Relationships ◽  
Behavioural Ecology ◽  
Ancestral State ◽  
Evolutionary Patterns ◽  
Evolutionary Transitions ◽  
Size Dimorphism ◽  
Reproductive Modes

Abstract The evolution and diversification of animal reproductive modes have been pivotal questions in behavioural ecology. Amphibians present the highest diversity of reproductive modes among vertebrates, involving various behavioural, physiological and morphological traits. One such feature is the amplexus, which is the clasp or embrace of males on females during reproduction and is found almost universally in anurans. Hypotheses about the origin of amplexus are limited and have not been tested thoroughly, nor have they taken into account evolutionary relationships in most comparative studies. However, these considerations are crucial to an understanding of the evolution of reproductive modes. Here, using an evolutionary framework, we reconstruct the ancestral state of amplexus in 685 anuran species. We investigate whether the type of amplexus has a strong phylogenetic signal and test whether sexual size dimorphism could have influenced amplexus type or male performance while clasping females. Overall, we found evidence of ≥34 evolutionary transitions in amplexus type across anurans. We found that amplexus type exhibits a high phylogenetic signal and that amplexus type does not evolve in association with sexual size dimorphism. We discuss the implications of our findings for the diversity of amplexus types across anurans.

Sex Determination and Sexual Size Dimorphism in the Red-billed Tropicbird (Phaethon aethereus) and White-tailed Tropicbird (P. lepturus)

Waterbirds ◽  
2013 ◽  
Vol 36 (3) ◽  
pp. 348-352 ◽  
Author(s):  
Guilherme Tavares Nunes ◽  
Gustavo Da Rosa Leal ◽  
Cynthia Campolina ◽  
Thales Renato Ochotorena De Freitas ◽  
Márcio Amorim Efe ◽  
...  
Keyword(s):  
Sex Determination ◽  
Sexual Size Dimorphism ◽  
Size Dimorphism

scholarly journals Sexual size dimorphism and sex determination by morphometric measurements in the Coscoroba Swan

2011 ◽  
Vol 46 (3) ◽  
pp. 177-184 ◽  
Author(s):  
Cecilia Perez Calabuig ◽  
Andy J. Green ◽  
Miguel Ferrer ◽  
Roberto Muriel ◽  
Heden Moreira
Keyword(s):  
Sex Determination ◽  
Sexual Size Dimorphism ◽  
Morphometric Measurements ◽  
Size Dimorphism
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