Fw: "Round Island" Petrels off eastern Australia - astonishing!

To: Mike Carter <>, "" <>, Birding NZ <>
Subject: Fw: "Round Island" Petrels off eastern Australia - astonishing!
From: Nikolas Haass <>
Date: Sat, 25 May 2013 00:04:36 -0700 (PDT)
Hi Mike et al. 

Interesting indeed! In addition to the ground-breaking paper by Brooke et al. 
Ibis (2000) 142, 139-158 on the gadfly petrels of Round Island, there is an 
interesting paper by Brown et al. Molecular Ecology (2010) 19, 3157–3170 
showing that Trindade and Kermadec Petrels on Round island hybridise:

Historical records suggest that the petrels of Round Island (near Mauritius, 
Ocean) represent a recent, long-distance colonization by species originating 
from the
Atlantic and Pacific Oceans. The majority of petrels on Round Island appear 
most similar
to Pterodroma arminjoniana, a species whose only other breeding locality is 
Island in the South Atlantic. Using nine microsatellite loci, patterns of 
differentiation in petrels from Round and Trindade Islands were analysed. The 
populations exhibit low but significant levels of differentiation in allele 
frequencies and
estimates of migration rate between islands using genetic data are also low, 
the hypothesis that these populations have recently separated but are now 
isolated from
one another. A second population of petrels, most similar in appearance to the 
species P. neglecta, is also present on Round Island and observations suggest 
that the two
petrel species are hybridizing. Vocalizations recorded on the island also 
suggest that
hybrid birds may be present within the population. Data from microsatellite 
support this hypothesis and indicate that there may have been many generations 
hybridization and back-crossing between P. arminjoniana and P. neglecta on Round
Island. Our results provide an insight into the processes of dispersal and the
consequences of secondary contact in Procellariiformes.


Nikolas Haass

Brisbane, QLD

 From: Mike Carter <>
To: ; Birding NZ <> 
Cc: Paul Walbridge <>; John Darnell 
<>; Rohan Clarke <> 
Sent: Saturday, May 25, 2013 2:02 PM
Subject: [Birding-Aus] Fw: "Round Island" Petrels off eastern Australia - 

See below for the seemingly miraculous movements of one of the Kermadec Petrels 
that breeds on Round Island in the western Indian Ocean sent to me by John 
Darnell from the WA Museum. So Paul, your Southport birds don't necessarily 
come from Lord Howe!
Some of you may not be aware that Kermadec Petrels as well as Trinidade Petrels 
breed on Round Island. I'm not sure re the status of Herald Petrel there.  

Mike Carter
30 Canadian Bay Road
Mount Eliza  VIC 3930
Tel  (03) 9787 7136

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