Rapid morphological changes as agents of adaptation in introduced populations of the common myna (Acridotheres tristis)

2021 ◽  
Author(s):  
Tali Magory Cohen ◽  
Richard E. Major ◽  
R. Suresh Kumar ◽  
Manoj Nair ◽  
Kyle M. Ewart ◽  
...  
Keyword(s):  
Morphological Changes ◽  
Common Myna ◽  
Introduced Populations ◽  
Acridotheres Tristis ◽  
The Common

Observation record of the Common Myna (Acridotheres tristis) in South Korea

2020 ◽  
Vol 27 (2) ◽  
pp. 142-145
Author(s):  
Seok-Jun Son ◽  
Jae-Pyoung Yu ◽  
In-Kyu Kim ◽  
Jung-Lea Kim ◽  
Jung-Hoon Kang
Keyword(s):  
South Korea ◽  
Common Myna ◽  
Acridotheres Tristis ◽  
The Common

scholarly journals A survey of recent introduction events, spread and mitigation efforts of mynas (Acridotheres sp.) in Spain and Portugal

2015 ◽  
Vol 38 (1) ◽  
pp. 121-127
Author(s):  
S. Saavedra ◽  
◽  
A. Maraver ◽  
J. D. Anadón ◽  
J. L. Tella ◽  
...  
Keyword(s):  
Field Survey ◽  
Invasive Alien Species ◽  
Breeding Population ◽  
Island Populations ◽  
Common Myna ◽  
Breeding Populations ◽  
Preventive Actions ◽  
Acridotheres Tristis ◽  
The Common ◽  
Exponential Population Growth

The common myna Acridotheres tristis is listed among the world’s 100 worst invasive alien species. We combined previous records with a field survey to update the extent and fate of myna introductions in Spain and Portugal. Results suggest that there have been at least 22 independent accidental introductions of three myna species throughout the Iberian peninsula and three archipelagos since the early 1990s. While bank mynas (A. ginginianus) did not become established elsewhere, common mynas reached breeding populations on four islands. Eradication efforts allowed the extirpation of these breeding island populations, but common mynas continue to breed in the Tagus Estuary (continental Portugal). In this region, there is also a breeding population of crested mynas (A. cristatellus), which was undergone an exponential population growth in the last decade. To avoid further accidental introductions, eradication campaigns should be combined with preventive actions aiming to stop the trade of these species in Europe.

scholarly journals Is It Benign or Is It a Pariah? Empirical Evidence for the Impact of the Common Myna (Acridotheres tristis) on Australian Birds

PLoS ONE ◽  
2012 ◽  
Vol 7 (7) ◽  
pp. e40622 ◽  
Author(s):  
Kate Grarock ◽  
Christopher R. Tidemann ◽  
Jeffrey Wood ◽  
David B. Lindenmayer
Keyword(s):  
Empirical Evidence ◽  
Common Myna ◽  
Australian Birds ◽  
Acridotheres Tristis ◽  
The Common ◽  
The Impact

scholarly journals Prevalence and evolutionary relationships of haematozoan parasites in native versus introduced populations of common myna Acridotheres tristis

2005 ◽  
Vol 273 (1586) ◽  
pp. 587-594 ◽  
Author(s):  
Farah Ishtiaq ◽  
Jon S Beadell ◽  
Allan J Baker ◽  
Asad R Rahmani ◽  
Yadvendradev V Jhala ◽  
...  
Keyword(s):  
Parasite Prevalence ◽  
Oceanic Islands ◽  
Enemy Release Hypothesis ◽  
Malarial Parasite ◽  
Enemy Release ◽  
Common Myna ◽  
Introduced Populations ◽  
Native Populations ◽  
Acridotheres Tristis ◽  
Low Prevalence

The success of introduced species is frequently explained by their escape from natural enemies in the introduced region. We tested the enemy release hypothesis with respect to two well studied blood parasite genera ( Plasmodium and Haemoproteus ) in native and six introduced populations of the common myna Acridotheres tristis . Not all comparisons of introduced populations to the native population were consistent with expectations of the enemy release hypothesis. Native populations show greater overall parasite prevalence than introduced populations, but the lower prevalence in introduced populations is driven by low prevalence in two populations on oceanic islands (Fiji and Hawaii). When these are excluded, prevalence does not differ significantly. We found a similar number of parasite lineages in native populations compared to all introduced populations. Although there is some evidence that common mynas may have carried parasite lineages from native to introduced locations, and also that introduced populations may have become infected with novel parasite lineages, it may be difficult to differentiate between parasites that are native and introduced, because malarial parasite lineages often do not show regional or host specificity.

Testis Growth and Regression in Harmful Birds in the Punjab in Relation to Some Environmental Factors.

1978 ◽  
Vol 26 (1) ◽  
pp. 39 ◽  
Author(s):  
HR Dang ◽  
SS Guraya
Keyword(s):  
Environmental Factors ◽  
Environmental Temperature ◽  
Passer Domesticus ◽  
Reproductive Behaviour ◽  
Testis Weight ◽  
Common Myna ◽  
House Crow ◽  
Acridotheres Tristis ◽  
The Common ◽  
Harmful Species

Testis growth and regression were studied, in relation to environmental temperature, sunshine, relative humidity and rainfall, in the house crow Corvus splendens, the common myna Acridotheres tristis and the house sparrow Passer domesticus, all of which are harmful species in the Punjab. Testis weight varied greatly during the year, but the species differed in their response to environmental conditions. The crow and the myna have active testes during May-July and April-July respectively; in the sparrow the testes are active twice in the year, February-June and September-October. The environmental factors are not sufficient to regulate the reproductive behaviour of these birds in the Punjab, and it is suggested that the reproductive state of birds is determined by a combination of exteroceptive and enteroceptive factors which varies considerably among species.

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