Annual activity patterns of snakes from central Argentina (Córdoba province)

Leynaud, Gerardo C.; Reati, Gustavo J.; Bucher, Enrique H.

doi:10.1080/01650520701461301

Cited by 9 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…There is no accurate information on the thermal biology of W. merremii. Nevertheless, due to the increased male-female encounter rates characteristic of the inferred mating system for this species (Chiaraviglio, 1993;Leynaud et al, 2008;Tourmente et al, 2009), male W. merremi would not be forced to engage in prolonged mate searching. Furthermore, the frequent exposure to water would lower the average body temperature (Grigg et al, 1979;Manning and Grigg, 1997).…”

Section: Discussionmentioning

confidence: 99%

“…This pattern suggests the occurrence of spermatogenesis in the winter, coupled with male sperm storage until the mating season. During the mating season, females are available only briefly (because hatchlings must emerge at the same time as juvenile anurans) and have high spatial predictability (in association with water bodies; Chiaraviglio, 1993;Leynaud et al, 2008). In this situation, which is similar to an explosive mating aggregation, the male-female encounter rate would be increased and males would not be forced to travel long distances to find females, and hence could avoid exposure to extreme temperatures.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Sperm Parameters Associated with Reproductive Ecology in Two Snake Species

2011

View full text Add to dashboard Cite

The effect of temperature on sperm dynamic parameters in ectotherms in general, and reptiles in particular, remains poorly understood due to the lack of consistent evidence. As a group, snakes show considerable variability regarding mating systems, male reproductive behavior, thermoregulatory behavior, and preferred temperatures. Additionally, snakes present significant variability in sperm competition levels, which is determined by the species mating system. Because sperm longevity, motility, and velocity are positively related to reproductive success in both competitive and noncompetitive conditions, the sperm physiology of ectothermic organisms may functional optimally at ecologically relevant temperatures. The objective of this work was to analyze the effect of an ecologically plausible range of temperatures on sperm dynamic parameters of two species of snakes with contrasting mating systems and sperm competition levels: Boa constrictor occidentalis and Waglerophis merremii. To accomplish this, an in vitro incubation approach was used: sperm dynamic parameters (i.e., motility and velocity) were measured on sperm solution aliquots incubated at 25uC, 30uC, and 37uC for up to 10 h by means of a phase contrast video microscopy system. Results suggested that although an increase in temperature has a general negative impact on sperm motility and velocity, the two species studied present different degrees of sensitivity to high incubation temperatures. Moreover, these differences can be explained by the dissimilar thermal conditions that the sperm of the two species would experience during their reproductive seasons, which are a consequence of the differences in their reproductive behavior. In conclusion, sperm motility and swimming velocity respond mainly to environmental conditions imposed by mating systems rather than to selection by sperm competition.

show abstract

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Sperm Parameters Associated with Reproductive Ecology in Two Snake Species

2011

View full text Add to dashboard Cite

show abstract

“…Tipo de reproducción: Ovípara, se conocen puestas de 7 huevos (Scolaro, 2006). Alimentación: Serpientes y anfisbenas (Roze, 1996;Leynaud et al, 2008;Ávila et al, 2010;Sosa et al, 2019) e incluso canibalismo (Scolaro, 2006) Comentarios: Algunos autores consideran la existencia de una subespecie a partir de la descripción de…”

Section: Micrurus Altirostris)unclassified

Lista comentada de las serpientes de la Argentina, con referencias a su sistemática, distribución geográfica, dieta, reproducción, potencial peligrosidad y etimologías

Williams

Vera

Pietro

2021

RMLP

View full text Add to dashboard Cite

Los censos de fauna son fundamentales para conservar la biodiversidad de una región o área determinada. Además, frente a problemáticas de conservación de los ecosistemas, esto censos nos permiten identificar rápidamente que especies deben ser prioridad para las políticas de conservación. Hace ya casi dos décadas que se publicó la última lista comentada de los ofidios de la Argentina, tiempo en el que se han realizado numerosos y significativos cambios taxonómicos a nivel genérico y específico, y se han descripto además nuevas especies, o se han incluido otras antes indicadas para países limítrofes. Este trabajo tiene como objetivo actualizar el estado sistemático de las serpientes de Argentina y reunir información sobre su alimentación, conservación, datos sobre reproducción, etimología, nombres comunes, cambios taxonómicos, principales síntomas notificados en accidentes con varias culebras y serpientes de importancia médica, como los vipéridos. Para tal propósito, se realizó una extensa revisión bibliográfica sobre las serpientes de Argentina y países limítrofes. Además, se revisaron bases de datos digitales y se incluyeron datos propios no publicados provenientes de revisiones de colecciones herpetológicas y trabajos de campo. Para determinar el estado de conservación, se utilizó la última categorización de las serpientes argentinas y la base de datos digital de la IUCN. Presentamos datos novedosos para ocho familias y 129 especies de serpientes que habitan el territorio argentino.

show abstract

Water canals may promote large-scale defaunation of the Gran Chaco

Gallego-García,

Sarasola

2024

Biological Conservation

View full text Add to dashboard Cite

Annual activity patterns of snakes from central Argentina (Córdoba province)

Cited by 9 publications

References 15 publications

Sperm Parameters Associated with Reproductive Ecology in Two Snake Species

Sperm Parameters Associated with Reproductive Ecology in Two Snake Species

Lista comentada de las serpientes de la Argentina, con referencias a su sistemática, distribución geográfica, dieta, reproducción, potencial peligrosidad y etimologías

Water canals may promote large-scale defaunation of the Gran Chaco

Contact Info

Product

Resources

About