Sibynomorphus neuwiedi (Ihering, 1911) (Serpentes; Dipsadidae) and Potamojanuarius lamellatus (Semper, 1885) (Gastropoda; Veronicellidae): a trophic relationship revealed

Maia, Thiago; Dorigo, Thiago Arnt; Gomes, Suzete Rodrigues; Santos, Sonia Barbosa dos; Rocha, Carlos Frederico Duarte

doi:10.5007/2175-7925.2012v25n1p211

Cited by 5 publications

(1 citation statement)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A similar distribution pattern of GCL cells, with higher density in the ventral retina was observed in the dipsadid snakes Dipsas albifrons and Sibynomorphus neuwiedi ( Hauzman et al, 2018 ). Both species are nocturnal, semi-arboreal, and feed on ectothermic prey (goo-eaters) ( Maia et al, 2011 ; Sazima and Muscat, 2016 ), such as juveniles of B. jararaca . Thus, we suggest that this type of specialization might be associated with the niche occupied by snakes, the direction of predatory threats, and particularities of hunting strategies, which do not involve active foraging of fast moving prey ( Figure 11 ).…”

Section: Discussionmentioning

confidence: 99%

Morphological Plasticity of the Retina of Viperidae Snakes Is Associated With Ontogenetic Changes in Ecology and Behavior

2022

View full text Add to dashboard Cite

Snakes of the Viperidae family have retinas adapted to low light conditions, with high packaging of rod-photoreceptors containing the rhodopsin photopigment (RH1), and three types of cone-photoreceptors, large single and double cones with long-wavelength sensitive opsins (LWS), and small single cones with short-wavelength sensitive opsins (SWS1). In this study, we compared the density and distribution of photoreceptors and ganglion cell layer (GCL) cells in whole-mounted retinas of two viperid snakes, the lancehead Bothrops jararaca and the rattlesnake Crotalus durissus, and we estimated the upper limits of spatial resolving power based on anatomical data. The ground-dwelling C. durissus inhabits savannah-like habitats and actively searches for places to hide before using the sit-and-wait hunting strategy to ambush rodents. B. jararaca inhabits forested areas and has ontogenetic changes in ecology and behavior. Adults are terrestrial and use similar hunting strategies to those used by rattlesnakes to prey on rodents. Juveniles are semi-arboreal and use the sit-and-wait strategy and caudal luring to attract ectothermic prey. Our analyses showed that neuronal densities were similar for the two species, but their patterns of distribution were different between and within species. In adults and juveniles of C. durissus, cones were distributed in poorly defined visual streaks and rods were concentrated in the dorsal retina, indicating higher sensitivity in the lower visual field. In adults of B. jararaca, both cones and rods were distributed in poorly defined visual streaks, while in juveniles, rods were concentrated in the dorsal retina and cones in the ventral retina, enhancing sensitivity in the lower visual field and visual acuity in the upper field. The GCL cells had peak densities in the temporal retina of C. durissus and adults of B. jararaca, indicating higher acuity in the frontal field. In juveniles of B. jararaca, the peak density of GCL cells in the ventral retina indicates better acuity in the upper field. The estimated visual acuity varied from 2.3 to 2.8 cycles per degree. Our results showed interspecific differences and suggest ontogenetic plasticity of the retinal architecture associated with changes in the niche occupied by viperid snakes, and highlight the importance of the retinal topography for visual ecology and behavior of snakes.

show abstract

Section: Discussionmentioning

confidence: 99%

Morphological Plasticity of the Retina of Viperidae Snakes Is Associated With Ontogenetic Changes in Ecology and Behavior

2022

View full text Add to dashboard Cite

show abstract

Considering an integrated malacology approach to ecosystem assessment: a socio-ecological system analysis of the terrestrial mollusks in an atlantic rainforest area, southeastern Brazil

Esteves

2020

Ind. Jour. Manag. & Prod.

View full text Add to dashboard Cite

The invertebrate group is not considered in environmental studies. When they are remembered, the studies are vague, superficial and do not give the due importance that the group has in the ecosystem dynamics. This paper aimed at placing the terrestrial mollusks in the discussion agenda of complex socio-ecological systems and analyzed the interactions of these mollusks with the other components of the socio-ecological subsystems. The analysis was based on the theoretical-methodological framework proposed by Ostrom and discussed how terrestrial mollusks have the potential to support actions for decision-making in biodiversity conservation, public health and local economy. The framework presented four subsystems categorized as ecological, political, social and economic, with the Sooretama Biological Reserve in the Northern state of Espirito Santo as a geographical boundary. The results allow us to perceive that terrestrial mollusks have essential characteristics that reflect into ecosystem health, acting in an integrated way with the dynamics of environmental services and the equilibrium of habitats.

show abstract

Body Shape and Food Habits of South American Goo-Eater Snakes of the GenusSibynomorphus

Pizzatto

Oliveira

Marques

et al. 2018

South American Journal of Herpetology

View full text Add to dashboard Cite

Sibynomorphus neuwiedi (Ihering, 1911) (Serpentes; Dipsadidae) and Potamojanuarius lamellatus (Semper, 1885) (Gastropoda; Veronicellidae): a trophic relationship revealed

Cited by 5 publications

References 8 publications

Morphological Plasticity of the Retina of Viperidae Snakes Is Associated With Ontogenetic Changes in Ecology and Behavior

Morphological Plasticity of the Retina of Viperidae Snakes Is Associated With Ontogenetic Changes in Ecology and Behavior

Considering an integrated malacology approach to ecosystem assessment: a socio-ecological system analysis of the terrestrial mollusks in an atlantic rainforest area, southeastern Brazil

Body Shape and Food Habits of South American Goo-Eater Snakes of the GenusSibynomorphus

Contact Info

Product

Resources

About