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" Si Una Vez " ( English : If I Once ) is a song recorded by American recording artist Selena for her fourth studio album , Amor Prohibido ( 1994 ) . It was written by Pete Astudillo and produced by Selena 's brother @-@ producer A.B. Quintanilla . " Si Una Vez " is a mariachi fusion song and draws influence from cumb...
" Si Una Vez " received positive reviews from music critics who found the song to have showcase the singer 's vocal abilities . The Broadcast Music Inc. recognized it as the Single of the Year at the 1996 BMI Pop Awards . Many musicians have since recorded the song and released it on their respective albums including ...
= = Background and composition = =
" Si Una Vez " was written by Selena y Los Dinos backup dancer and vocalist Pete Astudillo . The song was co @-@ written by Selena 's brother @-@ producer A.B. Quintanilla who , along with Argentine musician Bebu Silvetti , served as producers . Keyboardist of the group , Ricky Vela retold in a 2002 interview how the ...
" Si Una Vez " is written in the key of D minor and is played in a moderate groove of 84 beats per minute . It incorporates music from several musical instruments , including the piano and guitar . Lyrically , Selena reminiscences her failed relationship and wonders why she ever fell in love with an abusive partner wh...
= = Critical reception and legacy = =
" Si Una Vez " was named by the Latin Times as one of the top @-@ ten best karaoke songs sung in Spanish . Writing for the Latin Times , Maria Valdez called the song " fun " especially when running into your former partner at a karaoke party and found the track to showcases a singer 's vocal abilities . Texas Public R...
Selena performed the song on her final performance on March 19 , 1995 during the Calle Ocho Festival in Miami , which attracted over 100 @,@ 000 fans . Selena was shot and killed by Yolanda Saldívar , her friend and former manager of the singer 's Selena Etc. clothing boutiques , on March 31 , 1995 . Selena 's perform...
= = Covers = =
Mexican singer Mary Boquitas recorded the song for the tribute album Mexico Recuerda a Selena ( 2005 ) . Mexican mariachi singer Alicia Villareal performed and recorded " Si Una Vez " for the live televised tribute concert Selena ¡ VIVE ! in April 2005 . American reggaeton singer Ivy Queen covered " Si Una Vez " for h...
= = = Manny Manuel version = = =
American merengue musician Manny Manuel covered the song on his debut album , El Rey de Corazones ( 1995 ) . Out of the five singles released from the album , " Si Una Vez " was Manuel 's most successful single off of the El Rey de Corazones album . The song debuted at number 29 on the United States Billboard Hot Lati...
= = = = Chart performance = = = =
= = Credits and personnel = =
All credits were taken from the album 's liner notes .
= Sicklefin lemon shark =
The sicklefin lemon shark , or sharptooth lemon shark ( Negaprion acutidens ) , is a species of requiem shark belonging to the family Carcharhinidae , widely distributed in the tropical waters of the Indo @-@ Pacific . It is closely related to the better @-@ known lemon shark ( N. brevirostris ) of the Americas ; the ...
A slow @-@ moving predator feeding mainly on bony fishes , the sicklefin lemon shark seldom travels long distances and many individuals can be found year @-@ round at certain locations . Like other members of its family , this species is viviparous , with females giving birth to no more than 13 pups every other year ,...
= = Taxonomy and phylogeny = =
The sicklefin lemon shark was first described as Carcharias acutidens by German naturalist Eduard Rüppell , in the 1837 Fische des Rothen Meeres ( Fishes of the Red Sea ) . In 1940 , Australian ichthyologist Gilbert Percy Whitley moved this species to his newly formed genus Negaprion . The type specimen , designated i...
Based on microsatellite DNA evidence , the sicklefin lemon shark is thought to have diverged from its sister species N. brevirostris 10 – 14 million years ago , when the closure of the Tethys Sea separated lemon sharks in the Indian Ocean from those in the Atlantic . The ancestral lemon shark species may have been N. ...
= = Distribution and habitat = =
The range of the sicklefin lemon shark extends from South Africa to the Red Sea ( including Mauritius , the Seychelles , and Madagascar ) , continuing eastward along the coast of the Indian subcontinent to Southeast Asia , extending as far north as Taiwan and the Philippines , and as far south as New Guinea and northe...
An inhabitant of coastal continental and insular shelves , the sicklefin lemon shark occurs from the intertidal zone to a depth of 92 m ( 302 ft ) . This species favors still , murky waters and is most common in bays , estuaries , and lagoons , and over sandy flats and outer reefs . Sometimes , an individual may ventu...
= = Description = =
The sicklefin lemon shark has a robust , stocky body and a short , broad head . The snout is rounded or almost wedge @-@ shaped , with small nostrils bearing triangular flaps of skin in front . The eyes are small , with no spiracles . Short furrows are present at the corners of the mouth . Thirteen to 16 ( usually 14 ...
The fins ( especially the dorsal , pectoral , and pelvics ) of the sicklefin lemon shark are more falcate ( sickle @-@ shaped ) than those of the otherwise very similar American lemon shark . The first dorsal fin is positioned closer to the pelvic than the pectoral fins . The second dorsal fin , nearly equal to the fi...
= = Biology and ecology = =
A sluggish species , the sicklefin lemon shark is usually seen cruising sedately just above the sea bottom or lying still on it , as unlike most requiem sharks , it is capable of actively pumping water over its gills . However , it will approach the surface in pursuit of food . This shark seldom undertakes long @-@ di...
Over 90 % of the sicklefin lemon shark 's diet consists of bottom- and shore @-@ dwelling teleosts , including herring , mullets , mackerel , silversides , needlefish , smelt @-@ whitings , porgies , sea catfish , triggerfish , parrotfish , and porcupinefish . Occasionally , they may also take cephalopods and crustace...
As with other members of its family , the sicklefin lemon shark is viviparous ; the developing embryos are sustained by a placental connection formed from their depleted yolk sacs . Females give birth to one to 13 ( usually six to 12 ) pups every other year in shallow nursery areas , following a gestation period of 10...
= = Human interactions = =
Several apparently unprovoked attacks on humans have been attributed to the sicklefin lemon shark . Due to its formidable size and teeth , it is regarded as potentially dangerous , and certainly this species has been known to defend itself quickly and vigorously if touched , speared , or otherwise provoked or alarmed ...
The IUCN has assessed the sicklefin lemon shark globally as Vulnerable ; it is harvested using anchored and floating gillnets , beach nets , and longlines . The meat is sold fresh or dried and salted for human consumption , the fins used for shark fin soup , and the liver oil is processed for vitamins . The sicklefin ...
= Flammulated flycatcher =
The flammulated flycatcher ( Deltarhynchus flammulatus ) is a species of bird in the Tyrannidae family and is the only species in the monotypic genus Deltarhynchus , although it is closely related to the birds of the genus Myiarchus . It is endemic to the dry deciduous forest , arid thorn forest , and scrubby woodland...
= = Taxonomy = =
The species was first described in 1875 by ornithologist George Newbold Lawrence , who placed this species in the genus Myiarchus . However , in 1893 it was split from Myiarchus into the new , monotypic genus Deltarhynchus by Robert Ridgway because of its shorter and broader bill , more rounded wings , and partially s...
Deltarhynchus is similar to the genus Myiarchus , but is distinguished from it by a broader and shorter bill , more rounded wings , a different face pattern , pale cinnamon wing and tail edgings , voice , streaking on the chest , and the bird 's skulking habits . The flammulated flycatcher 's generic name is derived f...
= = Description = =
The flammulated flycatcher is approximately 6 to 6 @.@ 5 inches ( 15 @-@ 16 @.@ 5 cm ) in length and has a chunky body . Adult males and females are similar in plumage , with each possessing olive to a worn gray @-@ brown upperparts and head . A whitish supraloral stripe and crescent are behind the bird 's eyes . It a...
= = = Vocalization = = =
The flammulated flycatcher mostly sings from April to August , which includes its breeding season , and tends to remain hidden while singing . The song of the flycatcher is a plaintive whistle followed by a short but quick roll . It can also give a plaintive and slurred chew call , which is often sung three to five ti...
= = Distribution and habitat = =
This flycatcher is endemic to the Pacific lowlands of Mexico 's western coast from Sinaloa to western Chiapas , while possibly extending into Guatemala , although this has not been confirmed . The total area that it lives in is estimated to be 66 @,@ 000 km2 ( 25 @,@ 482 @.@ 7 sq mi ) . Its range is discontinuous and ...
= = = Status = = =
The flammulated flycatcher is listed as being of least concern on the IUCN Red List due to its large range and the belief that the total population numbers over 10 @,@ 000 individuals ; however , no precise estimate on the bird 's population exists . While the species is known to be uncommon in parts of its range , it...
= = Ecology and behavior = =
This flycatcher is a sluggish and skulking species that usually remains in the underbrush . When excited either by an intruder or when attempting to attract a mate , this species raises the feathers on its crown to form what appears to be a crest ; however , unlike the closely related genus Myiarchus , it does not bob...
= = = Feeding = = =
The flammulated flycatcher forages by perching on an open branch and looking outward and downward for prey , which primarily consists of insects . Once it spots a potential meal , the flycatcher rapidly and directly flies at the insect , which is normally on the exposed upper surface of a leaf or twig . It hovers brie...
= = = Reproduction = = =
The flycatcher breeds around June of each year . It nests in shallow tree cavities that are surprisingly close to the ground , at approximately 90 centimeters above it . The nest is shaped like a cup and is composed of fine vegetable fibers , dried leaves , and shredded bark . Unlike the similar Myiarchus flycatchers ...