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3 results on '"*MARQUESAN imperial pigeon"'

1. Diversity of the Daphnia longispina species complex in Chinese lakes: a DNA taxonomy approach.

Author

Ma, Xiaolin, Yang, Zhong, Hu, Wei, Yin, Mingbo, Zhong, Yang, Petrusek, Adam, Wolinska, Justyna, and Gieβler, Sabine

Subjects
*MARQUESAN imperial pigeon, *DAPHNIA, *LAKES, *RNA, *DNA, *TAXONOMY
Abstract

Cladocerans of the Daphnia longispina complex are often the key components of pelagic food webs in northern temperate lakes and ponds. In the present study, we aimed to fill the gap in knowledge on the biogeography and diversity of this species complex, through analysis (by sequencing two mitochondrial genes) of the taxonomic structure of 18 lake populations across China, covering a large geographical and ecological range. Based on the patterns observed in the Western Palaearctic and Japan, we hypothesized that several species of the D. longispina complex should coexist and that some cryptic lineages are present in China. In the lakes studied, however, we detected haplotypes of only two species (D. galeata and D. dentifera). Daphnia galeata was detected in eutrophic lakes at lower altitudes (in central and eastern China), whereas D. dentifera was found in high-altitude oligotrophic lakes of the Tibetan Plateau in western China. The two lineages coexisted in only one of the lakes studied, in Tibet. The variation in mitochondrial DNA differed between the two species. Daphnia dentifera haplotypes were lake specific, while D. galeata haplotypes were often shared across lakes and geographic regions, indicating a recent rapid expansion of the latter species. [ABSTRACT FROM PUBLISHER]

Published
2015
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2. The biology of the critically endangered Marquesan Imperial-Pigeon (Ducuta galeata), Nuku Hiva, Marquesas Archipelago (French Polynesia)

Author

Caroline Blanvillain and Michael J. Thorsen

Subjects
0106 biological sciences, media_common.quotation_subject, Population, Zoology, 010603 evolutionary biology, 01 natural sciences, 010605 ornithology, Courtship, Critically endangered, Nest, education, Ecology, Evolution, Behavior and Systematics, Nature and Landscape Conservation, Marquesan imperial pigeon, media_common, geography, education.field_of_study, geography.geographical_feature_category, biology, Ecology, food and beverages, biology.organism_classification, Archipelago, Animal Science and Zoology, Conservation biology, Ornithology
Abstract

This paper presents data obtained on the biology of the Marquesan Imperial-Pigeon, or Upe, a critically endangered species that is very poorly studied, during a reintroduction procedure of the species from Nuku Hiva to Ua Huka Island, which was initiated as a conservation priority to create a second population. Our data show that in the study area, the Upe preferentially used the plant species of the emergent tree stratum and some of the native tree species of the intermediate stratum. The species' diet includes fruit and grain but also flowers, leaves and insects. Data collected on nest sites, social interactions, courtship, vocalisations and measurements, including sex and age determination, are also presented.

Published
2003

3. Population size, habitats and conservation of Marquesan Imperial Pigeon Ducula galeata

Author

Pascal Villard, Gilles Balança, and Marie-Noël De Visscher

Subjects
education.field_of_study, Herbivore, geography, geography.geographical_feature_category, Ecology, biology, Distribution géographique, Population size, Population, Endangered species, habitat, Poaching, biology.organism_classification, Pigeon, Habitat, Archipelago, Animal Science and Zoology, L20 - Écologie animale, education, Nature and Landscape Conservation, Marquesan imperial pigeon
Abstract

Marquesan Imperial Pigeon Ducula galeata only survives on Nuku Hiva island in the Marquesas archipelago. It lives and nests mainly in small patches of forest with tall trees, in deep valleys. The population is likely to consist of only 80-150 birds. However, its forest habitat is in peril due to overgrazing, especially by goats, which precludes growth of young trees. Better control of feral herbivores should be a priority for the conservation of the species, as well as the cessation of poaching of this endangered pigeon. Introduced black rats Rattus rattus do not seem to be a threat for this bird.

Published
2003

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