Complete Moult of an Undescribed Resident Taxon of the Reed Warbler<i>Acrocephalus scirpaceus / Baeticatus</i>Complex in the Smir Marshes, Northern Morocco

Amezian, Mohamed; Cortés, John E.; Thompson, Ian; Bensusan, Keith J.; Pérez, Charles; Louah, Anass; Agbani, Mohammed Aziz El; Qninba, Abdeljebbar

doi:10.5253/078.098.0213

Cited by 9 publications

(13 citation statements)

References 26 publications

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“…Given the lack of a clear structuring between Spain (subspecies scirpaceus ) and Morocco in both markers, our results do not support the hypotheses that the Moroccan population should form a separate taxon (see Introduction; Amezian et al , Jiguet et al ). In fact, Iberian and Moroccan birds even shared the same haplotypes.…”

Section: Discussioncontrasting

confidence: 81%

“…Furthermore, the authors reported slight, but significant, differentiation of Iberian populations and suggested that they may have a different evolutionary history than other populations. North African reed warblers seem to be partly sedentary (Amezian et al , Kennerley and Pearson ) and birds breeding in Morocco differ from European reed warblers also in biometrics, coloration and moult strategy (Amezian et al , Jiguet et al ). On this basis, some authors suggest that these birds could constitute a new taxon (Amezian et al , Jiguet et al ), thus the status of the north African population is still unclear.…”

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confidence: 99%

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Does fragmentation of wetlands affect gene flow in sympatric Acrocephalus warblers with different migration strategies?

Ceresa

Belda

Kvist

et al. 2015

Journal of Avian Biology

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Wetlands are naturally patchy habitats, but patchiness has been accentuated by the extensive wetlands loss due to human activities. In such a fragmented habitat, dispersal ability is especially important to maintain gene flow between populations. Here we studied population structure, genetic diversity and demographic history of Iberian and North African populations of two wetland passerines, the Eurasian reed warbler Acrocephalus scirpaceus and the moustached warbler Acrocephalus melanopogon. These species are closely related and sympatric in our study sites, but the reed warbler is a long-distance migrant and widespread bird while the moustached warbler is resident or migrates over short distances, and breeds across a more discontinuous range. Using microsatellites and mtDNA data, we found higher population differentiation in moustached than in reed warbler, indicating higher dispersal capability of the latter species. Our results also suggest that the sea limits dispersal in the moustached warbler. For both species, we found evidence of gene flow between study sites, indicating the capability of compensating for habitat fragmentation.However, in most cases gene flow was restricted, possibly because of the large distances between study sites (from c. 290 to 960 km) or breeding site fidelity. Haplotype diversity was higher for the reed warbler, possibly because of a more important contribution of dispersal from different populations and the higher population size. Studying demographic history, we obtained signs of postglacial population growth for both species, and evidences of a recent colonization or recolonization of the Mallorca Island by the moustached warbler.2

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Section: Discussioncontrasting

confidence: 81%

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confidence: 99%

Does fragmentation of wetlands affect gene flow in sympatric Acrocephalus warblers with different migration strategies?

Ceresa

Belda

Kvist

et al. 2015

Journal of Avian Biology

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“…Most Moroccan adult ambiguus undergo postbreeding complete moult on the breeding grounds, with many adults moulting simultaneously most primaries by early September (Amezian et al 2010, Jiguet et al 2010. By taking a species' moult pattern and tissue-specific isotopic discrimination and elemental turnover rates into account, we can infer the breeding or wintering origin of individuals from the stable isotope signatures if the birds use isotopically distinct areas, which is the case for Eurasian Reed Warblers breeding in Europe (Proch azka et al 2008).…”

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Identifying the winter grounds of the recently described Barbary Reed Warbler (Acrocephalus baeticatus ambiguus)

Jiguet

Dufour

Kardynal

et al. 2022

Ibis

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The Iberian and North African populations of reed warblers have been described recently as a separate taxon, ambiguus, forming a sister clade to the Sahelian subspecies minor of African Reed Warbler Acrocephalus baeticatus. Although the breeding range of ambiguus has been identified, the migration strategy of its populations remained unknown. We deployed geolocators and sampled the innermost primary from breeding adults in Spain for stable hydrogen (δ2H) analyses and also analysed stable carbon (δ13C) and nitrogen (δ15N) isotopes in feathers collected in two reed warbler taxa (Acrocephalus scirpaceus and Acrocephalus baeticatus ambiguus) in Morocco, to identify the moulting and wintering sites of these populations. Ring recoveries, geolocator tracks and probabilistic assignments to origin from δ2H values indicate that Spanish ambiguus are likely to moult south of the Sahara and winter in West Africa, probably from Mauretania to southern Mali and Ivory Coast. Moroccan ambiguus, however, undergo post‐breeding moult north of the Sahara, and possibly then migrate to West Africa. With other populations of ambiguus breeding from Algeria to Libya and probably wintering further east in the Sahelian belt, the Barbary Reed Warbler can therefore be considered a trans‐Saharan migrant, with a post‐breeding moult strategy that varies between populations, and probably structured according to breeding latitude.

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“…the present study), the true status of a few species has become more apparent. The wintering of Penduline Tits presented here and the existence of a resident population of a possible new taxon of Reed Warbler in Morocco (Amezian et al 2010) are worth mentioning.…”

Section: On Regular Wintering Of Eurasian Penduline Tits Remiz Pendulmentioning

confidence: 80%

On regular wintering of Eurasian Penduline Tits Remiz pendulinus in northern Morocco

Amezian

Thompson²,

Bensusan³

et al. 2011

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Complete Moult of an Undescribed Resident Taxon of the Reed WarblerAcrocephalus scirpaceus / BaeticatusComplex in the Smir Marshes, Northern Morocco

Cited by 9 publications

References 26 publications

Does fragmentation of wetlands affect gene flow in sympatric Acrocephalus warblers with different migration strategies?

Does fragmentation of wetlands affect gene flow in sympatric Acrocephalus warblers with different migration strategies?

Identifying the winter grounds of the recently described Barbary Reed Warbler (Acrocephalus baeticatus ambiguus)

On regular wintering of Eurasian Penduline Tits Remiz pendulinus in northern Morocco

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