The Gavialis-Tomistoma debate: the contribution of skull ontogenetic allometry and growth trajectories to the study of crocodylian relationships

2010 ◽  
Vol 12 (6) ◽  
pp. 568-579 ◽  
Author(s):  
Paolo Piras ◽  
Paolo Colangelo ◽  
Dean C. Adams ◽  
Angela Buscalioni ◽  
Jorge Cubo ◽  
...  
2021 ◽  
Vol 288 (1953) ◽  
pp. 20210226
Author(s):  
Nathalie Feiner ◽  
Illiam S. C. Jackson ◽  
Eliane Van der Cruyssen ◽  
Tobias Uller

Diversifications often proceed along highly conserved, evolutionary trajectories. These patterns of covariation arise in ontogeny, which raises the possibility that adaptive morphologies are biased towards trait covariations that resemble growth trajectories. Here, we test this prediction in the diverse clade of Anolis lizards by investigating the covariation of embryonic growth of 13 fore- and hindlimb bones in 15 species, and compare these to the evolutionary covariation of these limb bones across 267 Anolis species. Our results demonstrate that species differences in relative limb length are established already at hatching, and are resulting from both differential growth and differential sizes of cartilaginous anlagen. Multivariate analysis revealed that Antillean Anolis share a common ontogenetic allometry that is characterized by positive allometric growth of the long bones relative to metapodial and phalangeal bones. This major axis of ontogenetic allometry in limb bones deviated from the major axis of evolutionary allometry of the Antillean Anolis and the two clades of mainland Anolis lizards. These results demonstrate that the remarkable diversification of locomotor specialists in Anolis lizards are accessible through changes that are largely independent from ontogenetic growth trajectories, and therefore likely to be the result of modifications that manifest at the earliest stages of limb development.


Author(s):  
Lisa J. Faust ◽  
Claudine André ◽  
Raphaël Belais ◽  
Fanny Minesi ◽  
Zjef Pereboom ◽  
...  

Wildlife sanctuaries rescue, rehabilitate, reintroduce and provide life-long care for orphaned and injured animals. Understanding a sanctuary’s population dynamics—patterns in arrival, mortality and projected changes in population size—allows careful planning for future needs. Building on previous work on the population dynamics of chimpanzees (Pan troglodytes) in sanctuaries of the Pan African Sanctuary Alliance (PASA; Faust et al. 2011), this chapter extends analyses to the only PASA bonobo sanctuary. Its authors analysed historic demographic patterns and projected future population dynamics using an individual-based demographic model. The population has been growing at 6.7 per cent per year, driven by arrivals of new individuals (mean = 5.5 arrivals per year). Several model scenarios projecting varying arrival rates, releases and breeding scenarios clarify potential future growth trajectories for the sanctuary. This research illustrates how data on historic dynamics can be modelled to inform future sanctuary capacity and management needs. Les sanctuaires de faune secourent, réhabilitent, réintroduisent, et fournissent des soins pour toute la vie aux animaux orphelins et blessés. Comprendre les dynamiques de la population d’un sanctuaire—les motifs d’arrivée, mortalité, et de changements projetés de la taille de la population—permet une planification prudente pour les nécessités du futur. En se basant sur le travail déjà fait sur les dynamiques de la population chimpanzé (Pan troglodytes) dans les sanctuaires du Pan African Sanctuary Alliance (PASA; Faust et al. 2011), nous étendons notre analyse au seul sanctuaire bonobo par PASA. Nous avons analysé les motifs démographiques historiques et avons projeté les futures dynamiques de la population en utilisant un modèle démographique basé sur l’individu. La population augmente de 6.7 per cent par an, poussée par l’arrivée de nouveaux individus (moyenne = 5.5 arrivées par an). Plusieurs scénarios modèles montrent une trajectoire de potentielle croissance pour le sanctuaire. Cette recherche illustre comment modeler les données sur les dynamiques historiques pour informer la capacité future du sanctuaire et les besoins gestionnaires.


Aquaculture ◽  
2021 ◽  
Vol 536 ◽  
pp. 736470
Author(s):  
Li’ang Yang ◽  
Lijuan Wang ◽  
Zhihao Wu ◽  
Zhiyu Hao ◽  
Zongcheng Song ◽  
...  

2015 ◽  
Vol 212 (1) ◽  
pp. S379
Author(s):  
Clare O'Connor ◽  
Amy O'Higgins ◽  
Bernard Stuart ◽  
Michael Turner ◽  
Mairead Kennelly

2017 ◽  
Vol 20 (1) ◽  
pp. 29-39 ◽  
Author(s):  
Marina Micaela Strelin ◽  
Santiago Benitez‐Vieyra ◽  
Juan Fornoni ◽  
Christian Peter Klingenberg ◽  
Andrea Cocucci

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