scholarly journals Hotter nests produce smarter young lizards

2012 ◽  
Vol 8 (3) ◽  
pp. 372-374 ◽  
Author(s):  
Joshua J. Amiel ◽  
Richard Shine
Keyword(s):  
Climate Change ◽  
Site Selection ◽  
Cognitive Skills ◽  
Nest Site ◽  
Incubation Temperature ◽  
Nest Site Selection ◽  
Learning Performance ◽  
Locomotor Performance ◽  
Incubation Temperatures ◽  
Bassiana Duperreyi

A hatchling reptile's sex, body size and shape, and locomotor performance can be influenced not only by its genes, but also by the temperature that it experiences during incubation. Can incubation temperature also affect a hatchling's cognitive skills? In the scincid lizard Bassiana duperreyi , higher incubation temperatures enhanced the resultant hatchling's learning performance. Hence, factors such as maternal nest-site selection and climate change affect not only the size, shape and athletic abilities of hatchling reptiles, but also their ability to learn novel tasks.

Nest-site selection and the factors influencing hatching success and offspring phenotype in a nocturnal skink

2017 ◽  
Vol 38 (3) ◽  
pp. 363-369 ◽  
Author(s):  
David G. Chapple ◽  
Susan N. Keall ◽  
Charles H. Daugherty ◽  
Kelly M. Hare
Keyword(s):  
Site Selection ◽  
Nest Site ◽  
Hatching Success ◽  
Incubation Temperature ◽  
Nest Site Selection ◽  
Nest Location ◽  
Nesting Sites ◽  
Nest Site Choice ◽  
Incubation Temperatures ◽  
The Impact

Nest-site selection in ectothermic animals influences hatching success and offspring phenotype, and it is predicted that females should choose nesting sites that maximise their reproductive fitness, ultimately through the reproductive success of their offspring. We completed nest-site choice experiments on a nocturnal lizard, the egg-laying skink (Oligosoma suteri), to determine whether eggs (and subsequent hatchlings) from cooler nests do better at cooler incubation temperatures, and conversely if those laid in warmer nests perform better at warmer incubation temperatures. We provided a simple nest-choice experiment, with oviposition-retreat sites available in either a hot or a cool sector of the enclosure; in the wild females nest under objects. Female O. suteri laid eggs both during the day and night, and nested more in the hot than cool sector. Eggs from each clutch were split across three egg incubation temperatures (18°C, 22°C, 26°C) to decouple the impact of initial nest-site choice from the subsequent incubation temperature regime. Whether eggs were initially laid in the hot or cool sector was not related to hatching success, offspring phenotype or offspring locomotor performance. We conclude that offspring phenotype and performance is primarily influenced by the temperature during incubation, rather than the initial thermal environment of the nest location. Thus, female O. suteri may select warmer nesting sites to ensure higher incubation temperature and enhanced offspring fitness.

scholarly journals The Role of Cognition in Social Information Use for Breeding Site Selection: Experimental Evidence in a Wild Passerine Population

2020 ◽  
Vol 8 ◽  
Author(s):  
Jennifer Morinay ◽  
Laure Cauchard ◽  
Pierre Bize ◽  
Blandine Doligez
Keyword(s):  
Site Selection ◽  
Cognitive Abilities ◽  
Information Sources ◽  
Nest Site ◽  
Information Use ◽  
Nest Site Selection ◽  
Learning Performance ◽  
Nest Boxes ◽  
Problem Solving Task ◽  
Slow Learning

In spatio-temporally variable environments, individuals are known to use information for making optimal decisions regarding where and when to breed. Optimal decision making can be complex when relying on multiple information sources with varying levels of reliability and accessibility. To deal with such complexity, different cognitive abilities such as learning and memory might enable individuals to optimally process and use these information sources. Yet, the link between information use and cognitive ability remains unexplored in natural populations. We investigated whether learning performance on a problem-solving task was related to the use of an experimentally manipulated source of social information for nest site selection in wild collared flycatchers (Ficedula albicollis). Collared flycatchers are known to use heterospecific information from their main competitors, the great tits (Parus major). Here, we created a local apparent preference by tits for an artificial nest site feature (a geometric symbol attached to nest boxes occupied by tits) and recorded whether flycatcher pairs chose to settle in nest boxes displaying the same feature as tits (i.e., copied tit apparent preference). Using a problem-solving task requiring opening a door temporarily blocking the nest box entrance, we then measured flycatchers' learning performance during nestling rearing as the number of entrances required to solve the task and enter the nest box twice in a row below a given efficiency threshold. We found that the probability to copy tit preference decreased with decreasing learning performance in females, particularly yearling ones: fast learning females copied tit preference, while slow learning ones rejected it. Male learning performance did not affect copying behavior. Our results showed that learning performance might play an important role in the ability to optimally use information for nest site selection in females: both fast and slow learning females could process this heterospecific information source but used it differently. This could partly explain the link between cognitive abilities and reproductive success reported in previous studies. Whether cognitive abilities may modulate condition-dependent costs of using different information remains to be explored.

Nest-site selection and nest size influence the incubation temperature of Morelet's crocodiles

2020 ◽  
Vol 91 ◽  
pp. 102624
Author(s):  
Marco A. López-Luna ◽  
Jesús González-Soberano ◽  
Mauricio González-Jáuregui ◽  
Armando H. Escobedo-Galván ◽  
Emilio A. Suárez-Domínguez ◽  
...  
Keyword(s):  
Site Selection ◽  
Nest Site ◽  
Incubation Temperature ◽  
Nest Site Selection ◽  
Nest Size

Phenotypic consequences of nest-site selection in black rat snakes (Elaphe obsoleta)

2004 ◽  
Vol 82 (3) ◽  
pp. 449-456 ◽  
Author(s):  
Gabriel Blouin-Demers ◽  
Patrick J Weatherhead ◽  
Jeffrey R Row
Keyword(s):  
Sex Determination ◽  
Site Selection ◽  
Nest Site ◽  
Incubation Temperature ◽  
Nest Site Selection ◽  
Elaphe Obsoleta ◽  
Temperature Dependent ◽  
Black Rat ◽  
Black Rat Snakes ◽  
Males And Females

Nest-site selection is the only behaviour that can be considered parental care in most oviparous reptiles because eggs are abandoned after laying and because incubation conditions resulting from nest-site selection can have profound effects on offspring. During a 7-year study of black rat snakes, Elaphe obsoleta (Say in James, 1823), we investigated phenotypic effects of incubation temperature on hatchlings, monitored temperatures in nests, and determined the preferred nesting temperature. Temperatures of communal nests were higher than those of single-female nests. In the laboratory, females preferred to nest at temperatures most similar to those of communal nests. Hatchlings from eggs incubated at temperatures similar to those in the warmer communal nests hatched faster, were longer, swam faster, were less aggressive, and had fewer scale anomalies than hatchlings from eggs incubated at temperatures similar to those in single nests. A possible disadvantage of communal nests is that eggs in communal nests may be at greater risk to parasitism by Nicrophorus pustulatus (Herschel, 1807). The incubation experiment allowed a test of a key assumption of a model proposed to explain environmental sex determination. Contrary to that assumption, we found no evidence that incubation temperature affected males and females differently. Our results might explain why temperature-dependent sex determination appears not to occur in snakes.

VIEWING HABITAT THROUGH ANOTHER LENS: BIRD NEST-SITE SELECTION AND PRODUCTIVITY ACROSS A BEACH THERMAL LANDSCAPE

2019 ◽  
Author(s):  
Lauren Schaale ◽  
◽  
Joseph Baxley ◽  
Narcisa Pricope ◽  
Raymond M. Danner
Keyword(s):  
Site Selection ◽  
Nest Site ◽  
Nest Site Selection ◽  
Bird Nest

scholarly journals Nest site selection and breeding ecology of the Ferruginous Duck (Aythya nyroca) in Algeria

2021 ◽  
Vol 26 ◽  
pp. e01524
Author(s):  
Karim Loucif ◽  
Mohamed Cherif Maazi ◽  
Moussa Houhamdi ◽  
Haroun Chenchouni
Keyword(s):  
Site Selection ◽  
Nest Site ◽  
Nest Site Selection ◽  
Breeding Ecology

scholarly journals Territory and Nest-Site Selection of Cerulean Warblers in Eastern Ontario

The Auk ◽  
2001 ◽  
Vol 118 (3) ◽  
pp. 727-735 ◽  
Author(s):  
Jason Jones ◽  
Raleigh J. Robertson
Keyword(s):  
Site Selection ◽  
Nest Site ◽  
Deciduous Forest ◽  
Spatial Scales ◽  
Nest Site Selection ◽  
Population Characteristics ◽  
Dendroica Cerulea ◽  
Large Trees ◽  
Eastern Ontario ◽  
Cerulean Warblers

Abstract We examined habitat selection by breeding Cerulean Warblers (Dendroica cerulea) at three spatial scales in eastern Ontario over three years (1997–1999). Territories were characterized by well-spaced large trees, with high canopies and dense foliage cover at heights between 12–18 m. Nesting habitat additionally was characterized by dense foliage cover above 18 m. The results of our nest-patch (0.04 ha circle around nest) and nest-site (0.01 ha circle) analyses indicate that male Cerulean Warblers may take active roles in nest-site selection when selecting territories. We conclude from our nest-patch and nest-site selection analyses that territories likely contain multiple nest patches and sites and that male Cerulean Warblers may defend areas with multiple nest patches or sites, which may attract females to settle with them. Whether or not Cerulean Warbler females use nest-site availability as a mate- or territory-choice cue remains unknown. We also tested the validity of a commonly made assumption that a random sampling of habitat by researchers is representative of the habitat actually available to birds and found that, in our study area, the assumption was invalid. Taken together, our results point toward the need to maintain sizeable stands of mature, deciduous forest to ensure the persistence of Cerulean Warblers in eastern Ontario. Population characteristics such as lower minimum area requirements and a resilience to habitat disturbance may make that an easier job in eastern Ontario than elsewhere in this species' breeding range.

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