Proximate and ultimate causes of dispersal in the Iberian lynx Lynx pardinus

Ferreras, Pablo; Delibes, Miguel; Palomares, Francisço; Fedriani, José M.; Calzada, Javier; Revilla, Eloy

doi:10.1093/beheco/arg097

Cited by 82 publications

(89 citation statements)

References 71 publications

(110 reference statements)

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“…Siblings of different litters remaining in the mother's home range show that the dispersal of an individual is not associated with the birth of another litter. This lack of immediate dispersal of older litter mates is similar to what has been observed in lynx (Lynx pardinus) (Ferreras et al 2004), but different to most other solitary cats, where dispersal is synched with the rearing of a new litter (Smith 1993, Maehr et al 2002.…”

Section: Parents-offspring Interactionssupporting

confidence: 76%

“…Several hypotheses have been proposed to explain the ultimate causes of dispersal, including avoidance of inbreeding, competition for resources and competition for mates (Greenwood 1980, Ferreras et al 2004. Expulsion of juveniles by parents and weakening of social ties are often considered possible proximate causes associated with dispersal, but empirical evidence for this assertion is scant (Macdonald and Kays 2005).…”

mentioning

confidence: 99%

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Predispersal home range shift of an ocelot Leopardus pardalis (Carnivora: Felidae) on Barro Colorado Island, Panama

Marés¹,

Moreno²,

Kays³

et al. 2007

RBT

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Abstract:Home range shifts prior to natal dispersal have been rarely documented, yet the events that lead a subadult to abandon a portion of its home range and venture into unfamiliar territories, before eventually setting off to look for a site to reproduce, are probably related to the causes of dispersal itself. Here, we used a combination of manual radio-tracking and an Automated Radio Telemetry System to continuously study the movements of a subadult male ocelot (Leopardus pardalis), a solitary carnivore with sex-biased dispersal, on Barro Colorado Island, Panama, for 18 months from May 2003 through October 2004. The subadult ocelot's parents were also radio-tracked to record possible parent-offspring interactions within their home ranges. At the age of ca. 21 months the subadult gradually began to shift its natal home range, establishing a new one used until the end of the study, in an area that had previously been used by another dispersing subadult male. Only three parent-offspring interactions were recorded during the four months around the time the range-shift occurred. The apparent peaceful nature of these encounters, along with the slow transition out of a portion of his natal home range, suggest the subadult was not evicted from his natal area by his parents. The timing of the shift, along with the subadult's increase in weight into the weight range of adult ocelots four months after establishing the new territory, suggests that predispersal home range shifts could act as a low risk and opportunistic strategy for reaching adult size, while minimizing competition with parents and siblings, in preparation for an eventual dispersal into a new breeding territory. Rev. Biol. Trop. 56 (2): 779-787. Epub 2008 June 30.

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Section: Parents-offspring Interactionssupporting

confidence: 76%

mentioning

confidence: 99%

Predispersal home range shift of an ocelot Leopardus pardalis (Carnivora: Felidae) on Barro Colorado Island, Panama

Marés¹,

Moreno²,

Kays³

et al. 2007

RBT

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“…Similarly, severe habitat restriction led to philopatry in male cougar Puma concolor coryi in Florida, where they returned to the vicinity of their natal areas after unfruitful dispersal attempts (Maehr et al, 2002). A similar process was described for the Iberian lynx Lynx pardinus (Ferreras et al, 2004). Habitat quality and barriers also shaped dispersal directions.…”

Section: Discussionmentioning

confidence: 73%

Importance of dispersal for the expansion of a Eurasian lynxLynx lynxpopulation in a fragmented landscape

Zimmermann

Breitenmoser‐Würsten

Breitenmoser

2007

Oryx

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Dispersal allows recolonization of previous areas of habitat following severe depression of a population but the significance of this is not clear in felids. There is little evidence to support the general belief that subadult felids will colonize new areas, although this is a crucial assumption in reintroduction or recovery projects. Eurasian lynx Lynx lynx were reintroduced into the Swiss Alps and have subsequently spread over part of their potential range but the expansion halted in the mid 1980s. We postulated that high lynx densities would lead to an expansion of the population, and to assess the potential of this population to expand we compared the dispersal characteristics of 22 subadults from the northwest Swiss Alps, where an increase in lynx abundance occurred from 1995 onwards, to 17 individuals from the Jura Mountains, an area with a lower lynx density.Dispersal data came mainly from radio-telemetry. Dispersal rates and distances for subadults that completed dispersal were lower in the north-west Swiss Alps than in the Jura Mountains. In general, subadults exhibited little ability to cross major barriers such as highways. The hypothesis that high density alone will foster the expansion of the population was therefore not confirmed. This has consequences for the reintroduction and recovery of carnivores in fragmented landscapes. To establish only one strong source population may not be an optimal strategy, and population nuclei should therefore be founded in several neighbouring patches.

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“…Palomares (2001) describe una diferencia clara entre el hábitat de dispersión y el de asentamiento, según la cual los árboles altos son característicos de la fase de dispersión para dotar de protección y los árboles pequeños son característicos de la fase de asentamiento. Según Ferreras et al (2004), la hembra elige zonas protegidas para alumbrar a las crías, como oquedades de troncos viejos de alcornoques o nidos viejos en árboles, hecho que se ha comprobado en Doñana. En Salamanca, hasta los años 90 hay datos de muertes de linces adultos y crías, por lo que se puede establecer la zona como área de dispersión y de núcleos reproductores ocasionales (rodríguez & Delibes, 1990;grande del Brío, 1993;Tarazona & Pablos, 2006).…”

Section: Discussionunclassified

Árboles viejos como indicadores de biodiversidad de vertebrados forestales amenazados de la provincia de Salamanca (España)

et al. 2016

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RESUMEN:Se ha comparado la abundancia de árboles viejos en la provincia de Salamanca (España) con la distribución de las especies de vertebrados forestales amenazados presentes, observándose que existe una correlación significativa entre ambos parámetros para las siguientes especies estudiadas: águila imperial (Aquila adalberti), buitre negro (Aegypus monachus), lince ibérico (Lynx pardinus), milano real (Milvus milvus) y un grupo de especies de quirópteros forestales (Miniopterus schreibersii, Myotis bechsteinii, Myotis emarginatus, Myotis mystacinus, Myotis myotis, Nyctalus lasiopterus, Nyctalus noctula, Rhinolophus euryale, Rhinolophus ferrumequinum y Rhinolophus mehelyi). Se ha demostrado que existe un incremento de la biodiversidad de vertebrados forestales amenazados paralelo al aumento de la densidad de árboles viejos en los municipios de la provincia. Por ello, se puede deducir que la densidad de árboles viejos es un buen parámetro indicador del estado de conservación del ecosistema forestal y clave para el mantenimiento de dichas especies amenazadas. PALABRAS CLAVE: Árboles viejos; región mediterránea; vertebrados forestales amenazados; indicador de biodiversidad.ABSTRACT: Ancient trees abundance has been compared with distribution of threatened forest vertebrate species at the province of Salamanca (Spain). A significant correlation between both parameters has been observed for the following considered species: imperial eagle (Aquila adalberti), black vulture (Aegypus monachus), iberian lynx (Lynx pardinus), red kite (Milvus milvus) and a group of forest bats (Miniopterus schreibersii, Myotis bechsteinii, Myotis emarginatus, Myotis mystacinus, Myotis myotis, Nyctalus lasiopterus, Nyctalus noctula, Rhinolophus euryale, Rhinolophus ferrumequinum y Rhinolophus mehelyi). It has been proved that there is an increase of threatened forest vertebrates biodiversity along with increasing ancient trees density at the municipalities of the province. Therefore, we can deduce that ancient trees density is a good indicator parameter of the conservation status of the forest ecosystem and it is essential for the maintenance of these endangered species.

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Proximate and ultimate causes of dispersal in the Iberian lynx Lynx pardinus

Cited by 82 publications

References 71 publications

Predispersal home range shift of an ocelot Leopardus pardalis (Carnivora: Felidae) on Barro Colorado Island, Panama

Predispersal home range shift of an ocelot Leopardus pardalis (Carnivora: Felidae) on Barro Colorado Island, Panama

Importance of dispersal for the expansion of a Eurasian lynxLynx lynxpopulation in a fragmented landscape

Árboles viejos como indicadores de biodiversidad de vertebrados forestales amenazados de la provincia de Salamanca (España)

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