Южный гигант Колибри
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| Южный гигант Колибри | |
|---|---|
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| Патагона Гигас в Чили | |
Научная классификация 
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| Домен: | Эукариота |
| Королевство: | Животное |
| Phylum: | Chordata |
| Class: | Aves |
| Clade: | Strisores |
| Order: | Apodiformes |
| Family: | Trochilidae |
| Genus: | Patagona |
| Species: | P. gigas
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| Binomial name | |
| Patagona gigas (Vieillot, 1824)
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Южный гигантский колибри ( Patagona Gigas ) является одним из двух видов в роде Patagona и второй по величине видам колибри после его близкого относительного северного гигантского колибри .
Таксономия
[ редактировать ]Гигантский колибри был описан и проиллюстрирован в 1824 году французским орнитологом Луи Пьером Вейилотом на основе образца, который, по ошибке, был собран, был собран в Бразилии. [ 3 ] Тип местности была обозначена как Вальпараисо в Чили Карлом Эдуардом Хеллмейром в 1945 году. [ 4 ] [ 5 ] Гигантский колибри был единственным видом, размещенным в роде Patagona, когда в 1840 году был представлен Джордж Роберт Грей в 1840 году. [ 6 ] [ 7 ]
Молекулярные филогенетические исследования показали, что у гигантского колибри нет близких родственников и является сестрой подсемейной Trochilinae Колибри , большой клады, содержащей племена Lampornithini (горные драгоценные камни), меллисугини (пчелы) и трихилини (Изумжуры). [ 8 ]
Two subspecies were previously recognised:[7]
- P. g. peruviana Boucard, 1893 – southwest Colombia to north Chile and northwest Argentina
- P. g. gigas (Vieillot, 1824) – central, south Chile and west-central Argentina
These subspecies are thought to have emerged as a result of partial geographical separation of populations by volcanic activity in the Andes predating the Miocene; however, there remain areas of contact between the species, hence the lack of full speciation.[9] The proposed phylogenetic system for hummingbirds suggested by McGuire et al. (2009)[10] accommodated the possible elevation of these subspecies to species rank.
In 2014, P. gigas was split into two species, the northern giant hummingbird (P. chaski) and the southern giant hummingbird (P. gigas). The subspecies P. g. peruviana became invalid as it was found to be a nomen dubium. This is because the putative type series for the subspecies includes both giant hummingbird species: one Southern and three Northern giant hummingbirds.[11]
Description
[edit]
Giant hummingbirds can be identified by their large size and characteristics such as the presence of an eye-ring, straight bill longer than the head, dull colouration, very long wings (approaching the tail tip when stowed), long and moderately forked tail,[12] tarsi feathered to the toes and large, sturdy feet. There is no difference between the sexes.[9][13] Juveniles have small corrugations on the lateral beak culmen.[14]
Prior to the giant hummingbird being split into the Northern and Southern species, it was described as weighing 18–24 g (0.63–0.85 oz) and having a wingspan of approximately 21.5 cm (8.5 in) and length of 23 cm (9.1 in).[15] Although the Northern species is larger,[11] both are approximately the same length as a European starling or a northern cardinal, though giant hummingbirds are considerably lighter because it has a slender build and long bill, making the body a smaller proportion of the total length. This weight is almost twice that of the heaviest hummingbird species outside of the genus Patagona[16] and ten times that of the smallest, the bee hummingbird.[17]
The subspecies are visually distinguishable. P. g. peruviana is yellowish brown overall and has white on the chin and throat, where P. g. gigas is more olive green to brown and lacks white on the chin and throat.[9]
The giant hummingbird occasionally glides in flight, a behavior very rare among hummingbirds. Its elongated wings allow more efficient glides than do those of other hummingbirds.[18] The giant hummingbird's voice is a distinctive loud, sharp and whistling "chip".[19]
Distribution and habitat
[edit]The giant hummingbird is widely distributed throughout the length of the Andes on both the east and west sides.[9] It typically inhabits the higher altitude scrubland and forests that line the slopes of the Andes during the summer and then retreats to similar, lower altitude habitats in winter months.[13][20] The species persists through a large altitude range, with specimens retrieved from sea level up to 4600 m.[9] They have shown to be fairly resilient to urbanisation and agricultural activities; however, the removal of vegetation limits their distribution in dense city areas and industrial zones.[21] The giant hummingbird migrates in summer to the temperate areas of South America, reaching as low as 44° S. Correspondingly, it migrates north to more tropical climates in winter (March–August), though not usually venturing higher than 28° S.[9][19]
'P. g. peruviana' occurs from Ecuador to the southeastern mountains of Peru and 'P. g. gigas' from northern Bolivia and Chile to Argentina. Contact between these previously accepted subspecies[11] is most likely to occur around the eastern slopes of the north Peruvian Andes.[9]
Behaviour
[edit]Hummingbirds are extremely agile and acrobatic flyers, regularly partaking in sustained hovering flight, often used not only to feed on the wing but to protect their territory[22] and court mates.[17] The giant hummingbird is typical in that it will brazenly defend its precious energy-rich flower territory from other species and other giant hummingbirds. These birds are typically seen alone, in pairs or small family groups.[19]
Flight, anatomy and physiology
[edit]The giant hummingbird hovers at an average of 15 wing beats per second, a slow rate for a hummingbird.[15] Its resting heart rate is 300 beats per minute, with a peak rate in flight of 1020 beats per minute.[15] Energy requirements for hummingbirds do not scale evenly with size increases, meaning a larger bird such as giant hummingbird requires more energy per gram to hover than a smaller bird.[23]
The giant hummingbird requires an estimated 4.3 calories of food energy per hour to sustain its flight.[23] This huge requirement along with the low oxygen availability and thin air (generating little lift) at the high altitudes where the giant hummingbird usually lives suggest that it is close to the viable maximum size for a hummingbird.[24]
Food and feeding
[edit]
The giant hummingbird feeds mainly on nectar, visiting a range of flowers.[19] The female giant hummingbird has been observed ingesting sources of calcium (sand, soil, slaked lime and wood ash) after the reproductive season to replenish the calcium used in egg production; the low calcium content of nectar necessitates these extra sources.[25] Similarly, a nectar-based diet is low in protein and various dietary minerals, and this is countered by consuming insects.[25]
It regularly feeds from the flowers of the genus Puya in Chile, with which it enjoys a symbiotic relationship, trading pollination for food.[19][26] As a large hovering bird, particularly at high altitudes, the giant hummingbird has extremely high metabolic requirements. It is known to feed from columnar cacti, including Oreocereus celsianus and Echinopsis atacamensis ssp. pasacana, and Salvia haenkei.[22][27][28]
Considering the energy-rich nature of nectar as a food source, it attracts a large range of visitors apart from the hummingbird, which has coevolved with a plant to be the flower's most efficient pollinator.[22][26][27] These other visitors, because they are not designed to access the well-hidden bounty of nectar, often damage the flowers (for example, piercing them at the base) and prevent further nectar production.[26] Because of its high energy requirements, the giant hummingbird alters its foraging behaviour as a direct response to nectar robbing from other birds and animals, and this reduces the viability of the hummingbird in an area with many nectar robbers, as well as indirectly affecting the plants by reducing pollination.[26] If alien species are introduced that become nectar thieves, it is reasonable to predict that their activities will significantly impact the local ecosystem. This could prove to be a future risk for the giant hummingbird populations because they sit close to the physical limit in their metabolic demands.[24]
Breeding
[edit]There is little known of the giant hummingbird's breeding behaviour, but some generalisations can be inferred from other hummingbird species. Hummingbird males tend to have polygynous, occasionally promiscuous, behaviours[17] and no involvement after copulation.[29] The female builds the nest and lays a clutch of two eggs during the summer.[30] A giant hummingbird nest is small considering the size of the bird, typically made near water sources and perched on a branch of a tree or shrub parallel to the ground.[19]
Cultural significance
[edit]The giant hummingbird holds significant value for some of the aboriginal inhabitants of the Andes. The people of Chiloé Island believe that if a woman captures a hummingbird then they will gain great fertility from it.[19] This species is a likely inspiration to the people of the Nazca culture who created the Nazca hummingbird geoglyph.[19]
Status
[edit]The range of the giant hummingbird is sizable, estimated at 1,200,000 km2, with total numbers of about 10,000 adults. The species is classified by the International Union for Conservation of Nature as being of Least Concern.[1]
References
[edit]- ^ Jump up to: a b BirdLife International (2016). "Patagona gigas". IUCN Red List of Threatened Species. 2016: e.T22687785A93168933. doi:10.2305/IUCN.UK.2016-3.RLTS.T22687785A93168933.en. Retrieved 12 November 2021.
- ^ "Appendices | CITES". cites.org. Retrieved 2022-01-14.
- ^ Vieillot, Louis Pierre (1824). La Galerie des Oiseaux (in French). Vol. 1. Paris: Constant Chantepie. p. 296–297; Plate 180.
- ^ Hellmayr, Carl Eduard (1932). The Birds of Chile. Field Museum Natural History Publications. Zoological Series. Volume 19. Vol. 19. p. 230.
- ^ Peters, James Lee, ed. (1945). Check-List of Birds of the World. Vol. 5. Cambridge, Massachusetts: Harvard University Press. p. 95.
- ^ Gray, George Robert (1840). A List of the Genera of Birds : with an Indication of the Typical Species of Each Genus. London: R. and J.E. Taylor. p. 14.
- ^ Jump up to: a b Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (August 2022). "Hummingbirds". IOC World Bird List Version 12.2. International Ornithologists' Union. Retrieved 13 September 2022.
- ^ McGuire, J.; Witt, C.; Remsen, J.V.; Corl, A.; Rabosky, D.; Altshuler, D.; Dudley, R. (2014). "Molecular phylogenetics and the diversification of hummingbirds". Current Biology. 24 (8): 910–916. Bibcode:2014CBio...24..910M. doi:10.1016/j.cub.2014.03.016. PMID 24704078.
- ^ Jump up to: a b c d e f g Osés, C. S. (2003). Taxonomy, phylogeny, and biogeography of the Andean hummingbird genera Coeligena Lesson, 1832; Pterophanes Gould, 1849; Ensifera Lesson 1843; and Patagona Gray, 1840 (Aves: Trochiliformes) (1st ed.). Bonn, Germany: Bonn University. Retrieved 18 April 2015.
- ^ McGuire, Jimmy A.; Witt, Christopher C.; Remsen, J. V.; Dudley, R.; Altshuler, Douglas L. (5 August 2008). "A higher-level taxonomy for hummingbirds". Journal of Ornithology. 150 (1): 155–165. doi:10.1007/s10336-008-0330-x.
- ^ Jump up to: a b c Williamson, Jessie L.; Gyllenhaal, Ethan F.; Bauernfeind, Selina M.; Bautista, Emil; Baumann, Matthew J.; Gadek, Chauncey R.; Marra, Peter P.; Ricote, Natalia; Valqui, Thomas; Bozinovic, Francisco; Singh, Nadia D.; Witt, Christopher C. (2024-05-21). "Extreme elevational migration spurred cryptic speciation in giant hummingbirds". Proceedings of the National Academy of Sciences. 121 (21): e2313599121. doi:10.1073/pnas.2313599121. ISSN 0027-8424. PMC 11126955. PMID 38739790.
- ^ Clark, Christopher J. (2010). "The evolution of tail shape in hummingbirds". The Auk. 127 (1): 44–56. doi:10.1525/auk.2009.09073.
- ^ Jump up to: a b Von Wehrden, H. (2008). "The giant hummingbird (Patagona gigas) in the mountains of central Argentina and a climatic envelope model for its distribution". Wilson Journal of Ornithology. 120 (3): 648–651. doi:10.1676/07-111.1.
- ^ Oritz-Crespo, F. I. (1972). "A new method to separate immature and adult hummingbirds". The Auk. 89 (4): 851–857. doi:10.2307/4084114. JSTOR 4084114.
- ^ Jump up to: a b c Lasiewski, Robert C.; Weathers, Wesley W.; Bernstein, Marvin H. (1967). "Physiological responses of the giant hummingbird, Patagona gigas". Comparative Biochemistry and Physiology. 23 (3): 797–813. doi:10.1016/0010-406X(67)90342-8. PMID 6079418.
- ^ Fernández, María José; Dudley, Robert; Bozinovic, Francisco (2011). "Comparative energetics of the giant hummingbird". Physiological and Biochemical Zoology. 84 (3): 333–340. doi:10.1086/660084. PMID 21527824. S2CID 31616893.
- ^ Jump up to: a b c Healy, Susan; Hurly, T. Andrew (2006). "Hummingbirds". Current Biology. 16 (11): R392–R393. Bibcode:2006CBio...16.R392H. doi:10.1016/j.cub.2006.05.015. PMID 16753546.
- ^ Templin, R.J. (2000). "The spectrum of animal flight: insects to pterosaurs". Progress in Aerospace Sciences. 36 (5–6): 393–436. Bibcode:2000PrAeS..36..393T. doi:10.1016/S0376-0421(00)00007-5.
- ^ Jump up to: а беременный в дюймовый и фон глин час Рикардо Р. (2010). Многоэтническое руководство птиц субантарктических лесов Южной Америки (2-е изд.). Университет Северного Техаса Пресс. С. 171–173.
- ^ Герцог, Себастьян К.; Родриго, Сория А.; Matthysen, Erik (2003). «Сезонные различия в композиции птичьего сообщества в лесном фрагменте с высоким уровнем полилеписа (Rosaceae)» . Бюллетень Уилсона . 115 (4): 438–447. doi : 10.1676/03-048 . S2CID 85640049 .
- ^ Виллегас, Мариана; Garitano-Zavala, Alvaro (2010). «Ответы сообщества птиц на различные городские условия в Ла -Пас, Боливия». Городские экосистемы . 13 (3): 375–391. Bibcode : 2010urbec..13..375V . doi : 10.1007/s11252-010-0126-7 .
- ^ Jump up to: а беременный в Schlumpberry, Bo; Badate, EI (2005). Подпрокат Echinopsis atacamensis Subsp. Pasacana Хасельтония . 11 : 18–2 doi : 1070-0048 (2005) 11 [18: dofvte] 10 2985 / S2CID 86659001
- ^ Jump up to: а беременный Hainsworth, FR; Wolf, LL (1972). «Сила для зависания полета по отношению к размеру тела в колибри». Американский натуралист . 106 (951): 589–596. doi : 10.1086/282799 . S2CID 84151001 .
- ^ Jump up to: а беременный Altshuler, DL; Дадли Р. (2006). «Физиология и биомеханика полета птиц на большой высоте» . Интегративная и сравнительная биология . 46 (1): 62–71. doi : 10.1093/ICB/ICJ008 . PMID 21672723 .
- ^ Jump up to: а беременный Estades, cf; Вбусович, Массачусетс; Томасевич, JA (2008). Nighmingbirds ( Pagina gagas ). Wilson Journal of Ornology 120 (3): 651–653. doi : 10.1676/07–054.1 . S2CID 86241862 .
- ^ Jump up to: а беременный в дюймовый González-Gómez, PL; Valdivia, CE (2005). «Прямое и косвенное влияние границы нектара на опылительное поведение Patagona Gigas (Trochilidae)». Биотропный . 37 (4): 693–696. Bibcode : 2005biotr..37..693g . Doi : 10.1111/j.1744-7429.2005.00088.x . S2CID 84689385 .
- ^ Jump up to: а беременный Даниэль М.; Лопес, Рамиро П. (2011). . Cactaceae (Cactaceae), кактус, выживут Систематика и эволюция растений 295 (1–4): 129–1 Bibcode : 2011psyev . doi : 10.1007/ s00606-011-0485-4
- ^ Вестер, П.; Claßen-Bockhoff, R. (2006). «Опыление колибри в Salvia Haenkei (Lamiaceae), не имеющее типичного механизма рычага». Систематика растения и эволюция . 257 (3–4): 133–146. Bibcode : 2006psyev.257..133W . doi : 10.1007/s00606-005-0366-9 . S2CID 1095801 .
- ^ Vleck, CM (1981). «Инкубация колибри: женская внимательность и температура яиц». Oecologia . 51 (2): 199–205. Bibcode : 1981oecol..51..199V . doi : 10.1007/bf00540601 . PMID 28310082 . S2CID 25220383 .
- ^ Fierro-Calderón, K.; Мартин, TE (2007). «Репродуктивная биология колибри фиолетовой зонки в Венесуэле и сравнения с другими тропическими и умеренными колибри» . Кондор . 109 (3): 680–685. doi : 10.1650/8305.1 . S2CID 6748956 .
Внешние ссылки
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