What Causes Differences in the Age-Class Structure between Suburban and Forest Populations of Anolis homolechis?

Diversity, Journal Year: 2024, Volume and Issue: 16(1), P. 35 - 35

Published: Jan. 4, 2024

Although growing urbanization has direct negative consequences for local biodiversity, several native species have been observed maintaining populations in urban environments. Understanding which factors influence the ability of to persist environments is crucial, both study biological adaptation and planning. The quantification proportion juvenile individuals can be a good proxy assessing long-term persistence populations. We present comparative data about spatial temporal variations age-class structure two suburban forest Cuban endemic lizard Anolis homolechis, obtained during 20-month survey. found four-fold lower juveniles habitat compared one. There was, however, no evidence differential female fecundity between habitats, as assessed by gravid females. Conversely, rate tail autotomy (an antipredator behavior) was significantly higher ones, possibly reflecting exposure predators and, particularly, inter- intraspecific cannibalism. However, loss at initial capture or type had effect on probability recapture juveniles. discuss potential causes modified urbanized

Language: Английский

Contemporary Survival Selection Fails to Explain Observed Patterns of Phenotypic Divergence Between Suburban and Forest Populations of the Cuban Endemic Lizard, Anolis homolechis

Biology, Journal Year: 2024, Volume and Issue: 13(12), P. 1019 - 1019

Published: Dec. 5, 2024

Although urbanization is a major threat to biodiversity, some native species have managed persist in urban areas. Populations of such often show phenotypic differences with their rural counterparts. A crucial question whether result from different selection regimes between habitats. As previous studies showed that suburban and forest populations Anolis homolechis differ both body size sex ratio, we tested the effect on adult survival those based long-term capture-marking-recapture survey replicated design. We assessed evidence for directional stabilizing two by modeling apparent recapture probability separately. Adult did not habitat types. In addition, there was no size-related differential However, irrespective habitat, found significant female size, whereas male independent size. Overall, had type (monthly probability: 0.80 males vs. up 0.89 females optimal size). discuss our results relation potential mechanisms involved observed differentiation A. other lizard areas transformed urbanization.

Language: Английский

BEHAVIORAL ASSESSMENT REVEALS SOCIAL AGGREGATIONS IN Petrosaurus thalassinus

Revista Latinoamericana de Herpetología, Journal Year: 2024, Volume and Issue: 7(1)

Published: Feb. 12, 2024

In a brief study on the endemic lizard, Petrosaurus thalassinus, in Cañon de la Zorra region of Sierra La Laguna Biosphere Reserve Mexico, over seven days we aimed to gain preliminary insight into their social structure by examining behavior, morphology, and habitat use. We captured, marked, measured 28 adults, conducted 19.4 hours focal observations 47 marked unmarked adults field. Males had longer snout-vent lengths than females, but females greater mass males same length. Lizards exhibited 30 behaviors organized eight categories. Most notably, while basking rocks or sharing crevices they aggregated groups two five individuals (< 1m apart) frequent visual contact (25/47 observations, 53.2%) crevices. Although lizards showed high levels mutual tolerance signaling little no aggression. Larger used taller took higher positions them, there was difference between sexes. Furthermore, observed P. thalassinus interspecific interactions with Sceloporus hunsakeri Ctenosaura hemilopha. Our results indicate that could have more complex system reported for most lizards, which warrants further investigation.

Language: Английский