40 Ar/ 39 Ar geochronology and the paleoposition of Christmas Island (Australia), Northeast Indian Ocean

2015 ◽  
Vol 28 (1) ◽  
pp. 391-406 ◽  
Author(s):  
Rajat Taneja ◽  
Craig O'Neill ◽  
Mark Lackie ◽  
Tracy Rushmer ◽  
Phil Schmidt ◽  
...  
Keyword(s):  
Indian Ocean ◽  
Christmas Island ◽  
Ar Geochronology

The order Zoraptera (Insecta) from Christmas Island, Indian Ocean

1995 ◽  
Vol 9 (2) ◽  
pp. 243 ◽  
Author(s):  
TR New
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Christmas Island ◽  
Insect Order ◽  
A New Species

A new species of Zorotypus Silvestri, Z. lawrencei, sp.nov., is described from female specimens collected on Christmas Island, marking the first species of the insect order Zoraptera from an Australian territory.

scholarly journals The ecological connectivity of whale shark aggregations in the Indian Ocean: a photo-identification approach

2016 ◽  
Vol 3 (11) ◽  
pp. 160455 ◽  
Author(s):  
Samantha Andrzejaczek ◽  
Jessica Meeuwig ◽  
David Rowat ◽  
Simon Pierce ◽  
Tim Davies ◽  
...  
Keyword(s):  
Indian Ocean ◽  
Time Frame ◽  
Ocean Basin ◽  
Identification System ◽  
Whale Shark ◽  
Monte Carlo Simulation Study ◽  
Photo Identification ◽  
Christmas Island ◽  
Modelling Studies ◽  
Whale Sharks

Genetic and modelling studies suggest that seasonal aggregations of whale sharks ( Rhincodon typus ) at coastal sites in the tropics may be linked by migration. Here, we used photo-identification (photo-ID) data collected by both citizen scientists and researchers to assess the connectedness of five whale shark aggregation sites across the entire Indian Ocean at timescales of up to a decade. We used the semi-automated program I 3 S (Individual Interactive Identification System) to compare photographs of the unique natural marking patterns of individual whale sharks collected from aggregations at Mozambique, the Seychelles, the Maldives, Christmas Island (Australia) and Ningaloo Reef (Australia). From a total of 6519 photos, we found no evidence of connectivity of whale shark aggregations at ocean-basin scales within the time frame of the study and evidence for only limited connectivity at regional (hundreds to thousands of kilometres) scales. A male whale shark photographed in January 2010 at Mozambique was resighted eight months later in the Seychelles and was the only one of 1724 individuals in the database to be photographed at more than one site. On average, 35% of individuals were resighted at the same site in more than one year. A Monte Carlo simulation study showed that the power of this photo-ID approach to document patterns of emigration and immigration was strongly dependent on both the number of individuals identified in aggregations and the size of resident populations.

The common wolf snake, Lycodon aulicus capucinus, a recent colonists of Christmas Island in the Indian Ocean

1993 ◽  
Vol 20 (2) ◽  
pp. 261 ◽  
Author(s):  
TH Fritts
Keyword(s):  
Indian Ocean ◽  
Biological Information ◽  
Pest Species ◽  
Boiga Irregularis ◽  
Christmas Island ◽  
Brown Tree Snake ◽  
The Indian Ocean ◽  
The Common

The discovery of the common wolf snake, Lycodon aulicus capucinus, on Christmas I . in the Indian Ocean suggests that individuals of the species have colonised the island recently. On the basis of biological information for this widespread colubrid snake and for the brown tree snake, Boiga irregularis, a well-documented pest species on Guam, the establishment of the common wolf snake would pose a severe threat to the native fauna and ecology of Christmas I. Immediate research is needed to document the spread of the snake, to evaluate its effects on other fauna, and to control or eradicate the species before it becomes firmly established.

Sign in / Sign up

Export Citation Format

Share Document