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Corallus Hortulanus, Squamata: Boidae

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Corallus Hortulanus, Squamata: Boidae WWW.IRCF.ORG/REPTILESANDAMPHIBIANSJOURNALTABLE OF CONTENTS IRCF REPTILES & IRCF AMPHIBIANS REPTILES • VOL &15, AMPHIBIANS NO 4 • DEC 2008 • 18919(3):187–190 • SEPT 2012 IRCF REPTILES & AMPHIBIANS CONSERVATION AND NATURAL HISTORY TABLE OF CONTENTS FEATURE ARTICLES . ChasingObservations Bullsnakes (Pituophis catenifer sayi) in Wisconsin: on Foraging and On the Road to Understanding the Ecology and Conservation of the Midwest’s Giant Serpent ...................... Joshua M. Kapfer 190 . The Shared History of Treeboas (Corallus grenadensis) and Humans on Grenada: New PreyA Hypothetical ExcursionRecords ............................................................................................................................ for the AmazonRobert W. Henderson Treeboa 198 (CorallusRESEARCH ARTICLES hortulanus, Squamata: Boidae) . The Texas Horned Lizard in Central and Western Texas ....................... Emily Henry, Jason Brewer, Krista Mougey, and Gad Perry 204 . The Knight Anole (Anolis equestris) in Florida1 2 3 ............................................. Pedro da CostaBrian Silva J. Camposano,, Robert Kenneth W. L. HendersonKrysko, Kevin M. Enge,, Antonio Ellen M. Donlan,Alvares and TavaresMichael Granatosky, 212 4 5 CONSERVATION ALERTSâmia Caroline Melo Araújo , Anderson Guzzi . World’s Mammals in Crisis .............................................................................................................................................................Photographs by the senior author. 220 . More Than Mammals ...................................................................................................................................................................... 223 . The1Núcleo “Dow deJones Pesquisa Index” of em Biodiversity Biodiversidade ........................................................................................................................................... e Biotecnologia, (BIOTEC), Campus Ministro Reis Velloso, (CMRV). 225 Universidade Federal do Piauí, UFPI, Parnaíba, Piauí, Brazil HUSBANDRY 2Milwaukee Public Museum, Milwaukee, Wisconsin 53233 USA ([email protected]) . Captive Care of the Central Netted Dragon ....................................................................................................... Shannon Plummer 226 3Universidade Federal do Piauí, Campus Ministro Reis Velloso, Laboratório de Zoologia, Parnaíba, Piauí, Brazil 4 GranduandaPROFILE em Ciências Biológicas pela Universidade Estadual do Piauí-UESPI, CEP 64280-000 Campo Maior, Piauí, Brazil 5Universidade Federal do Piauí, Campus Ministo Reis Velloso, Laboratório de Zoologia, Parnaíba, Piauí, Brazil . Kraig Adler: A Lifetime Promoting Herpetology ................................................................................................ Michael L. Treglia 234 COMMENTARY . The Turtles Have Been Watching Me ........................................................................................................................ Eric Gangloff 238 espite their relativeBOOK REVIEWabundance in many Neotropical suring 15 km2, bordered to the west by the Rio Parnaíba and lowland snake .faunasThreatened and Amphibians the frequency of the World edited with by S.N. which Stuart, M. Hoffmann,to the east J.S. Chanson, by Lontras N.A. Cox, and Mirim creeks. Most of the land is D R. Berridge, P. Ramani, and B.E. Young .............................................................................................................. Robert Powell 243 they are often encountered, observations on foraging and pre- devoted to agriculture, rice in the region that comprises gallery dation in species of theCONSERVATION boid genus Corallus RESEARCH are REPORTS: extremely Summaries rare. of Publishedforest Conservation and sugarcane Research Reports and ................................. banana plantations 245 in the interior. Henderson (2002) witnessedNATURAL HISTORYonly one RESEARCH C. grenadensis REPORTS feeding: Summaries of PublishedDuring Reports May on Naturaland JulyHistory 2012, ................................. surveys 247 were made for Corallus NEWBRIEFS ...................................................................................................................................................................................... 248 during 700–800 encounters EDITORIAL with INFORMATION the species, ..................................................................................................................................................... and he missed hortulanus during the lunar phases 251(new moon, first quar- the actual prey capture. FOCUS More ON CONSERVATION recently, Yorks: A Projectet al. You (2003) Can Support ...............................................................................................ter, full moon, and last quarter) between 252 1745 h and 0540 and Henderson et al. (2007) have witnessed prey captures h along a creek known by locals as Igarapé dos Camaleões by C. grenadensis and C. cookii, respectively. Here we pres- (Fig. 1). The length of the entire creek is 3 km, but only 1.5 ent detailed observations on foraging and prey capture by the km were accessible by canoe. An infrared monocular (Yukon Front Cover. Shannon Plummer. Back Cover. Michael Kern geographically and ecologically widespreadTotat et velleseque Amazon audant Treeboa, mo Nightfall)Totat et velleseque and audanta video mo camera with night vision capability Corallus hortulanus (Linnaeus), as wellestibus as inveliquo new records velique rerchil of prey (Sonyestibus inveliquoCCD-TRV138) velique rerchil were used to record treeboa behavior. species for C. hortulanus. erspienimus, quos accullabo. Ilibus erspienimus,Sixty-four quos observations accullabo. Ilibus on C. hortulanus were made over a aut dolor apicto invere pe dolum aut dolor apicto invere pe dolum Observations were made on Batatasfugiatis maionsequatIsland, Piauí, eumque Brazil. periodfugiatis of maionsequat 288 hours. eumque The island represents a small portionmoditia of Parnaíba erere nonsedis Delta, ma sectiatur mea - moditia During erere nonsedis moonlit ma sectia nights- between 1800 h and 0034 h, 29 ma derrovitae voluptam, as quos tur ma derrovitae voluptam, as accullabo. observations were recorded: 23 boas (79.3%) were moving on branches, one was suspended by its tail, one captured an iguana, one captured a bird, and three were coiled with their heads facing down (Fig. 2). During moonless nights between 1800 h and 0145 h, 35 observations were made: 21 boas were moving on branches (60%), 12 were coiled with head fac- ing down (34.3%), one was observed during the shedding process, and one was hanging by its tail, possibly fishing (da Costa Silva and Henderson 2010). The ambient tempera- ture ranged between 28 °C and 25 °C during the hours of 1750–2350 h (the time span during which most snakes were observed). On 18 July 2012, an adult C. hortulanus (approxi- mately1.20 m total length) was observed about 2.3 m from a Fig. 1. A section of Igarapé dos Camaleões on Batatas Island, Piauí, Brazil. group of six Great Ani (Chrotophaga major) that were sleeping Copyright © 2012. Pedro da Costa Silva. All rights reserved. 187 DA COSTA SILVA ET AL. IRCF REPTILES & AMPHIBIANS • 19(3):187–190 • SEPT 2012 Fig. 2. Corallus hortulanus in a resting posture along Igarapé dos Camaleões. or resting on the branches of a thorn-laden tree (Macherium lunatum). The head of the boa was oriented directly toward the birds and it flicked its tongue three times. Over a span of 10 min, the boa moved toward the birds, approaching slowly and flicking its tongue several times. When the distance between the snake and the nearest bird was about 80 cm, all of the birds flew away. On 4 June 2012 (full moon), the distress call of a bird was heard at 1905 h and we observed a C. hortulanus (about Fig. 4. Corallus hortulanus with its head elevated shortly before beginning 90 cm total length) that had just captured an adult Great to stalk the Iguana iguana in the foreground. Kiskadee (Pitangus sulphuratus; Tyrannidae) of about 17 cm (Fig. 3). At 1907 h, wrapped in two of the snake’s coils, the bird was still alive and attempting to escape (legs and wings thrashing, calling). A third coil was applied at 1909 h and at 1915 h the bird appeared dead. The initial attempt at swal- lowing began at 1919 h with the boa taking the bird’s head in its mouth, but it appeared to be having difficulty getting beyond the bird’s beak. On the third attempt at 1923 h, it Fig. 3. Corallus hortulanus after capturing a Great Kiskadee (Pitangus sul- Fig. 5. Corallus hortulanus tongue-flicking at the head of the iguana just phuratus) (image from a video). prior to capturing it. 188 DA COSTA SILVA ET AL. IRCF REPTILES & AMPHIBIANS • 19(3):187–190 • SEPT 2012 Fig. 6. Corallus hortulanus constricting the captured iguana. Fig. 7. Corallus hortulanus ascending with its tail wrapped around the iguana. was successful and deglutition was completed at 1932 h. The 2011 it had approached to within 10 cm of the iguana’s head. snake then moved onto a branch of Montrichardia linifera During 2012–2013 h the boa directed tongue flicks toward along the creek and it was observed there for the next seven the iguana’s head (Fig. 5), neck, dorsum, and tail. Finally, at days. 2020 h, the boa struck the iguana on the neck and applied On 2 July 2012 at 1951 h, we observed a young boa three coils around its body and commenced constriction (Fig. (approximately 70 cm SVL) supported on Water Hyacinth 6). The iguana whipped its tail in unsuccessful
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