Diving-petrel

Diving-petrel

Taxobox
name = Diving-petrel



image_width = 250px
image_caption = Peruvian Diving-petrel, "Pelecanoides garnotii"
regnum = Animalia
phylum = Chordata
classis = Aves
ordo = Procellariiformes
familia = Pelecanoididae
familia_authority = G.R. Gray, 1871
genus = "Pelecanoides"
genus_authority = Lacépède, 1799
subdivision_ranks = Species
subdivision = "Pelecanoides garnotii" "Pelecanoides magellani" "Pelecanoides georgicus" "Pelecanoides urinatrix"
The diving-petrels are seabirds in the bird order Procellariiformes. There are four very similar species all in the family Pelecanoididae and genus "Pelecanoides" Lacépède, 1799.

Diving-petrels are auk-like small petrels of the southern oceans. The resemblances with the auks are due to convergent evolution, since both families feed by pursuit diving, although some researchers have in the past suggested that the similarities are due to relatedness. Amongst the Procellariiformes the diving petrels are the family most adapted to life in the sea rather than flying over it, and are generally found closer inshore than other families in the order.

Biology and ecology

Diving-petrels are plankton feeders, taking mostly crustacean prey such as krill, copepods and the amphipod "Themisto gaudichaudii", also taking small fish and squid. They have several adaptations for obtaining their prey incliude short powerful wings, a gular pouch for storing food, and their nostrils open upwards rather than forward pointing as it is in other tubenoses.

These birds nest in colonies on islands. One white egg is laid in a burrow in turf or soft soil. They are nocturnal at the breeding colonies. It has a long period of parental care (around 45 - 60 days) in the burrow, but once the chick fledges out to sea it is on its own.

Of the four species two, the Peruvian Diving-petrel and the Magellan Diving-petrel, have highly restricted ranges around South America's coasts, whilst the Common Diving-petrel and the South Georgia Diving-petrel range widely across the southern oceans, breeding on islands off New Zealand, sub-Antarctic islands in the Indian Ocean, and islands in the south Atlantic (like Tristan da Cunha).

Diving-petrels are amongst the world's most numerous birds, with Common and South Georgia Diving-petrels numbering several million pairs each. The Peruvian Diving-petrel, on the other hand, is threatened by guano extraction, introduced species and climate change, and is listed as an endangered species.

ystematics and evolution

The four species are:
* Peruvian Diving-petrel "Pelecanoides garnotii"
* Magellan Diving-petrel "Pelecanoides magellani"
* South Georgia Diving-petrel "Pelecanoides georgicus"
* Common Diving-petrel "Pelecanoides urinatrix"

The evolution and systematics of these birds is not well researched. Several populations were described as distinct species and while most of them are only subspecies, some may indeed be distinct. The prehistoric fossil record was long limited to very fragmentary remains described as "P. cymatotrypetes" found in Early Pliocene deposits of Langebaanweg, South Africa; while this bird apparently was close to the Common Diving-petrel, no members of the genus are known from South African waters today. [Olson (1985)]

In 2007, a humerus piece from New Zealand was described as "P miokuaka". This was found in Early/Middle Miocene deposits and just as may be expected, it far more resembles diving-petrels than any other known bird, but presents a less apomorphic condition.

Footnotes

References

* (1985): Section X.H.3. "Pelecanoididae". "In:" aut|Farner, D.S.; King, J.R. & Parkes, Kenneth C. (eds.): "Avian Biology" 8: 79-238. Academic Press, New York.


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  • Diving petrel — Peruvian Diving Petrel, Pelecanoides garnotii Scientific classification Kingdom …   Wikipedia

  • Diving petrel — Petrel Pe trel, n. [F. p[ e]trel; a dim. of the name Peter, L. Petrus, Gr. ? a stone ( John i. 42); probably so called in allusion to St. Peter s walking on the sea. See {Petrify}.] (Zo[ o]l.) Any one of numerous species of longwinged sea birds… …   The Collaborative International Dictionary of English

  • diving petrel — any of several small seabirds of the family Pelecanoididae, of Southern Hemisphere seas, having compact bodies, tubelike processes near the nostrils, and usually drab plumage. * * * ▪ bird       any of five species of small seabirds of the sub… …   Universalium

  • diving petrel — /daɪvɪŋ ˈpɛtrəl/ (say duyving petruhl) noun any of various short winged, black and white, pelagic birds of the genus Pelecanoides, family Procellariidae, especially the common diving petrel, P. urinatrix, a small, short tailed bird, with brown… …  

  • diving petrel — nardantieji audrašaukliai statusas T sritis zoologija | vardynas atitikmenys: lot. Pelecanoides angl. diving petrel rus. нырковый буревестник, m pranc. puffinure, m ryšiai: platesnis terminas – nardantieji audrašaukliai siauresnis terminas –… …   Paukščių pavadinimų žodynas

  • diving petrel — noun any of several small diving birds of southern hemisphere seas; somewhat resemble auks • Hypernyms: ↑pelagic bird, ↑oceanic bird • Member Holonyms: ↑Pelecanoididae, ↑family Pelecanoididae …   Useful english dictionary

  • diving petrel — noun Any seabird of the family Pelecanoididae in the order Procellariiformes, resembling auks and native to the southern oceans …   Wiktionary

  • Common Diving Petrel — Conservation status Least Concern (IUCN 3.1)[1] …   Wikipedia

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  • Magellan Diving-petrel — Taxobox name = Magellan Diving petrel status = LC | status system = IUCN3.1 regnum = Animalia phylum = Chordata classis = Aves ordo = Procellariiformes familia = Pelecanoididae genus = Pelecanoides species = P. magellani binomial = Pelecanoides… …   Wikipedia

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