Evolution of Vomeronasal Organs in Vertebrates

Bertmar, Gunnar

doi:10.1111/j.1558-5646.1981.tb04893.x

Cited by 111 publications

(56 citation statements)

References 17 publications

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“…aquatic turtles and mammals) the VN organs became vestigial or completely lost [98]–[100] and in those that acquired flying or climbing capabilities (e.g. arboreal lizards, catarrhini primates, chiropterans) the VN organs show high variability, including reduction and complete loss [100], [101]. On the other hand, in ground-living terrestrial amniotes the VN organs are well developed (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, in ground-living terrestrial amniotes the VN organs are well developed (e.g. snakes, ground-living lizards, monotremes, marsupials, rodents, ungulates, carnivores; [98], [100], [101]). As correctly noted by Senter [92], the extant phylogenetic bracket suggests that the VN system should have been absent in the most recent ancestor of crocodiles and birds.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, Senter [92] stated that the absence of a septomaxilla in archosaurs is evidence against the presence of a VN system in all members of the clade. However, a septomaxilla is also absent in all extant therian mammals [102], the vast majority of which have a VN system [100]. Thus, the absence of a septomaxilla seems to be an ambiguous osteological correlate for assessing the absence of a VN system in extinct tetrapods.…”

Section: Discussionmentioning

confidence: 99%

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The Osteology of the Basal Archosauromorph Tasmaniosaurus triassicus from the Lower Triassic of Tasmania, Australia

Ezcurra

2014

PLoS ONE

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Proterosuchidae are the most taxonomically diverse archosauromorph reptiles sampled in the immediate aftermath of the Permo-Triassic mass extinction and represent the earliest radiation of Archosauriformes (archosaurs and closely related species). Proterosuchids are potentially represented by approximately 15 nominal species collected from South Africa, China, Russia, Australia and India, but the taxonomic content of the group is currently in a state of flux because of the poor anatomic and systematic information available for several of its putative members. Here, the putative proterosuchid Tasmaniosaurus triassicus from the Lower Triassic of Hobart, Tasmania (Australia), is redescribed. The holotype and currently only known specimen includes cranial and postcranial remains and the revision of this material sheds new light on the anatomy of the animal, including new data on the cranial endocast. Several bones are re-identified or reinterpreted, contrasting with the descriptions of previous authors. The new information provided here shows that Tasmaniosaurus closely resembles the South African proterosuchid Proterosuchus, but it differed in the presence of, for example, a slightly downturned premaxilla, a shorter anterior process of maxilla, and a diamond-shaped anterior end of interclavicle. Previous claims for the presence of gut contents in the holotype of Tasmaniosaurus are considered ambiguous. The description of the cranial endocast of Tasmaniosaurus provides for the first time information about the anatomy of this region in proterosuchids. The cranial endocast preserves possibly part of the vomero-nasal ( = Jacobson’s) system laterally to the olfactory bulbs. Previous claims of the absence of the vomero-nasal organs in archosaurs, which is suggested by the extant phylogenetic bracket, are questioned because its absence in both clades of extant archosaurs seems to be directly related with the independent acquisition of a non-ground living mode of life.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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The Osteology of the Basal Archosauromorph Tasmaniosaurus triassicus from the Lower Triassic of Tasmania, Australia

Ezcurra

2014

PLoS ONE

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“…Whether these two receptor types are responsive to different kinds of chemical stimuli is still a matter of debate (see Thommesen 1983;Erickson and Caprio 1983; see also Chap. Bertmar (1981) suggested that the vomeronasal organ developed from the microvillous receptors of fish, whereas the main olfactory organ evolved from the ciliated receptors. In many mammals, microvillous receptors are segregated into a separate receptor organ called the vomeronasal organ.…”

Section: Olfactory Systemmentioning

confidence: 99%

Sensory Biology of Aquatic Animals

McFarland¹,

Atema²,

Fay³

et al. 1988

172

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“…Therefore, the salamander olfactory system has evolved in adaptation to the chemical environments of their distinct habitats. Salamanders possess two distinct subdivisions in the olfactory system: the main and accessory (vomeronasal) olfactory systems (Bertmar, ; Eisthen, ; Halpern & Martinez‐Marcos, ; Reiss & Eisthen, ). Axons of receptor neurons in the olfactory and vomeronasal epithelia form the olfactory and vomeronasal nerves and project into the main and accessory olfactory bulbs (MOB and AOB).…”

Section: Introductionmentioning

confidence: 99%

Characterization of glycoconjugates and sialic acid modification in the olfactory bulb of the Chinese fire‐bellied newt (Cynops orientalis)

Matsui

Komamoto

Igarashi

et al. 2019

Anat Histol Embryol

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Diverse glycoconjugates are expressed in the vertebrate olfactory bulb and serve as guidance cues for axons of nasal receptor neurons. Although the involvement of glycoconjugates in the segregation of the olfactory pathway has been suggested, it is poorly understood in salamanders. In this study, lectin histochemistry was used to determine glycoconjugate distribution in the olfactory bulb of the Chinese fire‐bellied newt (Cynops orientalis). Succinylated wheat germ agglutinin (sWGA), Ricinus communis agglutinin‐I and Lens culinaris agglutinin showed different bindings in the nerve fibre layer or glomerular layer, or both, between the main and accessory olfactory bulbs. We then investigated the lectin‐binding pattern after the removal of terminal sialic acids using neuraminidase. Desialylation resulted in a change in the binding reactivities with seven lectins. Wheat germ agglutinin, sWGA, soybean agglutinin (SBA) and peanut agglutinin showed different degrees of binding between the main and accessory olfactory bulbs. In addition, SBA showed a heterogeneous labelling of glomeruli in the rostral region of the main olfactory bulb. Our results suggest that terminal sialic acids mask the heterogeneity of glycoconjugates in the olfactory bulb of C. orientalis.

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Evolution of Vomeronasal Organs in Vertebrates

Cited by 111 publications

References 17 publications

The Osteology of the Basal Archosauromorph Tasmaniosaurus triassicus from the Lower Triassic of Tasmania, Australia

The Osteology of the Basal Archosauromorph Tasmaniosaurus triassicus from the Lower Triassic of Tasmania, Australia

Sensory Biology of Aquatic Animals

Characterization of glycoconjugates and sialic acid modification in the olfactory bulb of the Chinese fire‐bellied newt (Cynops orientalis)

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