scholarly journals Oophagy in the Smooth snake Coronella austriaca – first photographic record of bird egg predation

2021 ◽  
pp. 35-36
Author(s):  
BEATE STRØM JOHANSEN
2020 ◽  
Vol 54 (29-30) ◽  
pp. 1813-1826
Author(s):  
Giovany A. González-Desales ◽  
Luis A. Tello-Sahagún ◽  
Cynthia P. Cadena-Ramírez ◽  
Marco A. López-Luna ◽  
Alejandra Buenrostro-Silva ◽  
...  
Keyword(s):  

2011 ◽  
Vol 33 (10) ◽  
pp. 1617-1621 ◽  
Author(s):  
A. Waterkeyn ◽  
J. Vanoverbeke ◽  
N. Van Pottelbergh ◽  
L. Brendonck
Keyword(s):  

2021 ◽  
Author(s):  
Andrew Lee ◽  
Michelle Huang

The Neotropical primate Sapajus apella (Linnaeus, 1758), the black-capped capuchin monkey, is widely distributed across the Amazon basin (Boubli et al., 2020). Capuchins are generalist platyrrhines, occurring in most tropical forest types, where they forage opportunistically (Sabbatini et al., 2008; Lynch Alfaro et al., 2012; Boubli et al., 2020). They exploit a diverse variety of food sources, such as fruit, seeds, arthropods and vertebrate prey including small mammals (Rose, 1997; Resende et al., 2003; Albuquerque et al., 2014). Their foraging strategy is highly resourceful and adaptive, and are often considered as important predators of nests (Canale and Bernardo, 2016), including those of caiman (Torralvo et al., 2017), coatis (Rose, 1997) and especially of birds (Watts, 2020). In this work, we report observations of a foraging event by Sapajus apella that includes the first record of egg predation of the russet-backed oropendola, Psarocolius angustifrons (von Spix, 1824), as well as the predation of arboreal rodents, Oecomys sp. (Thomas, 1906).


2021 ◽  
Vol 38 ◽  
pp. 115-117
Author(s):  
C.N. Greenwell ◽  
◽  

Ruddy Turnstones Arenaria interpres have been identified as egg-predators at seabird and shorebird colonies, including gull and tern colonies in the tropics and Northern Hemisphere. The Australian Fairy Tern Sternula nereis nereis is a threatened (Environment Protection and Biodiversity Conservation Act 1999: Vulnerable) coastal seabird, whose breeding behaviour and ecology expose it to a wide range of threats. This study describes inferred predation on Fairy Tern eggs at a small breeding colony on Rottnest Island, Western Australia, by Ruddy Turnstones, a previously unsuspected predator for thisspecies. Unlike the behavioural response shown towards Silver Gulls Larus novaehollandiae and Australian Ravens Corvus coronoides, which includes collective group defence and dive-bombing, Fairy Terns showed a lack of aggression towards Turnstones within the colony. The lack of a behavioural response suggests that the Terns did not recognise the Turnstones as predators, which may increase the risk of egg-predation. This study suggests that we should be alert to threats from unsuspected predators, which have the potential to reduce the breeding success of this Vulnerable tern.


2021 ◽  
Vol 16 (1) ◽  
pp. 37-44
Author(s):  
Marcello Mezzasalma ◽  
Gaetano Odierna

The smooth snake Coronella austriaca is a widespread Palearctic colubrid species. The species has been the subject of several molecular and phylogeographic studies which highlighted the occurrence of distinct genetic lineages in different areas of the species distribution, but scarce cytogenetic data are currently available on the species. In this paper we present a molecular and karyological study performed with several banding, staining methods and NOR-FISH on samples of C. austriaca from different geographical areas (Italy and Greece) of the species distribution. The molecular and phylogenetic analysis unambiguously placed the studied samples in different clades with a clear geographical pattern. The karyotype of the two female samples studied was composed of 2n = 36 chromosomes with 16 macro- and 20 microchromosomes and a mix of plesiomorphic and derivate chromosome features. All macrochromosomes were biarmed with the exception of pair 5 that was telocentric. NORs were detected on a microchromosome pair. In both females, the pair 4 was heteromorphic (and completely heterochromatic after C-banding in the Italian female), representing the first report of a ZZ/ZW sex chromosome system with female heterogamety in C. austriaca. In addition, the W chromosome showed a different morphology between the two female studied (submetacentric and subtelocentric), highlighting the occurrence of a chromosomal diversification among distinct geographical areas of the species distribution and further supporting that the species contains different diverging evolutionary clades.


2020 ◽  
Vol 46 (4) ◽  
pp. 735-738
Author(s):  
Rajib Dey ◽  
Sourabh Biswas

Prosotas pia is reported from Jayanti riverbed (26.747066 N, 89.636343 E). Therefore, this note reports a new finding of this butterfly, being incorporated to the existing West Bengal lepidoptera list with a photographic record from the Buxa Tiger Reserve, West Bengal, India.


1994 ◽  
Vol 2 (5) ◽  
pp. 24-25
Author(s):  
Anthony D. Buonaquisit

We are all familiar with digital imaging for SEM instruments. Digital Imaging for TEM applications is not as well established. Nevertheless, it seems clear that it will not be long before digital imaging for TEM becomes common place. Systems are improving and costs are plummeting. With this in mind it is timely to review what digital imaging for TEM involves.In normal TEM operation an electron bream is scattered through a thin section of a sample. Physical mechanisms cause the electrons of the beam to scatter, producing bright-field images, dark-field images and diffraction patterns. The operator adjusts the instrument to display one of these images on the instrument's viewing screen. A photographic record is collected by flipping the viewing screen and exposing a sheet of film held in the TEM's camera. Exposed negatives can be removed for developing and printing in batches, using standard darkroom techniques.


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