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

scholarly journals Nest and Nidification Activities of the Spoonbill Platalea leucorodia in Westerghat Region of Shimoga, Karnataka

Our Nature ◽  
1970 ◽  
Vol 7 (1) ◽  
pp. 26-31
Author(s):  
G.Y. Dayananda ◽  
B.B. Hosetti
Keyword(s):  
Clutch Size ◽  
Site Selection ◽  
Nest Site ◽  
Nest Site Selection ◽  
Nest Size ◽  
Nesting Habitat ◽  
Nesting Material ◽  
Nesting Activity

Nest and nidification behaviour of the Spoonbill, Platlea leucorodia (Family- Threskiornithidae) was studied for three seasons during 2003-2005, at Gudavi Bird Sanctuary (GBS), Gudavi village, Sorab, Karnataka. The GBS harbored about 12 thousand birds of various species, of these, only 10-12 pairs of Spoonbills were breeds every year in this place. There were five Spoonbill nests, of which one was old egret nest and the four were newly built by Spoonbills. The clutch size was two to three in each nest (N = 5) and the shape of the egg was oval, white with small brown spots. The nesting activity usually starts in the month of late July and ends during December. The nesting activity, nest site selection, nesting habitat, nesting material, nest size, and nidification of Platalea leucorodia are discussed in this paper.Key words: Spoonbill, Platalea leucorodia, Nest and Nidification, Gudavi Bird Sanctuary,Shimoga.DOI: 10.3126/on.v7i1.2550Our Nature (2009) 7:26-31 

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.

Nest-site selection of the long-nosed bandicoot (Perameles nasuta) in a postfire environment

2015 ◽  
Vol 63 (5) ◽  
pp. 324 ◽  
Author(s):  
Christopher I. MacGregor ◽  
Ross B. Cunningham ◽  
David B. Lindenmayer
Keyword(s):  
Site Selection ◽  
Nest Site ◽  
Fire Effects ◽  
Nest Site Selection ◽  
Nest Size ◽  
Nest Location ◽  
Nest Sites ◽  
Species Survival ◽  
Frequency Of Use ◽  
Burnt Areas

Access to nest sites is critical to species survival and habitat suitability for most faunal species worldwide. We report on nest-site selection and use by the long-nosed bandicoot (Perameles nasuta) following a wildfire in late 2003. Thirty-eight bandicoots were tracked to 213 nests. The number of nests, frequency of nest use, nest range, nest size and nest site microhabitat in burnt and unburnt habitat were analysed. The mean number of nests used in burnt areas was 5.9, not significantly different from the number used in non-burnt areas (5.3). However, there were significant fire effects on nest location and frequency of use. Six months after the wildfire, 60% of nests in burnt forest and woodland habitat were in patches of unburnt microhabitat. These nests were significantly larger and were used more frequently than nests located in burnt microhabitat. After fire, P. nasuta typically uses nests under dense grasses and midstorey in unburnt microhabitat in burnt areas. However, the species will also nest in open areas and respond to fire-affected areas by constructing smaller nests. When conducting prescribed fires, the practice of ‘burning out’ should be minimised and patchiness at a microhabitat level be a desired outcome for bandicoot management.

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.

Breeding ecology, nest characteristics, and nest-site selection of stream- and lake-dwelling rock bass, Ambloplites rupestris (Rafinesque)

1987 ◽  
Vol 65 (2) ◽  
pp. 379-390 ◽  
Author(s):  
Douglas B. Noltie ◽  
Miles H. A. Keenleyside
Keyword(s):  
Site Selection ◽  
Nest Site ◽  
Nest Site Selection ◽  
Nest Size ◽  
Breeding Ecology ◽  
Breeding Populations ◽  
Rock Bass ◽  
Influence Of Water ◽  
Ambloplites Rupestris ◽  
Selection Of

This study examines the breeding ecology, nests, and nest-site selection of stream-dwelling rock bass, Ambloplites rupestris (Rafinesque), populating the Middle Thames River near London, Ontario. Breeding in this stream began earlier, at lower temperatures, and continued longer than in other documented lake-breeding populations. These responses were related to flooding which repeatedly thwarted breeding attempts. Nesting and spawning continued asynchronously throughout the seasons, increasing breeding opportunities. Older, larger males spawned earliest in the season, allowing them increased renesting opportunities. The duration of each stage in nesting and brood development was documented. Nests were generally larger than those of other rock bass populations. Male size and nest size were positively related. Nests were elliptical rather than circular as in lakes, reflecting the influence of water flow. Males demonstrated nest-site selection: individual nest sites were allocated nonrandomly with respect to depth, reflecting the availability of appropriate nesting substrates, and the majority of nests were constructed downstream from obstructions to current. Many of these features of rock bass reproduction can be interpreted as being responses to the relatively variable and rigorous environment of the stream habitat as compared with lakes.

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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