Correa-Sanchez, F.

Lemos-Espinal, J. A.

Smith, Geoffrey R.

Woolrich-Pina, G. A.

English

Denison University

Denison University Denison Digital Commons Denison Faculty Publications 2011 Body temperatures of Hyla arenicolor from Sierra de Tepozotlan, Estado de Mexico, Mexico F. Correa-Sanchez Geoffrey R. Smith G. A. Woolrich-Pina J. A. Lemos-Espinal Follow this and additional works at: https://digitalcommons.denison.edu/facultypubs  Part of the Biology Commons Recommended Citation Correa-Sanchez, F., Smith, G. R., Woolrich-Pina, G. A., & Lemos-Espinal, J. A. (2011). Body temperatures of Hyla arenicolor from Sierra de Tepozotlan, Estado de Mexico, Mexico. Bulletin of the Maryland Herpetological Society, 47(1-4), 42-44. This Article is brought to you for free and open access by Denison Digital Commons. It has been accepted for inclusion in Denison Faculty Publications by an authorized administrator of Denison Digital Commons. ' Volume 47 Numbers 1-4 January-December 2011 Body temperatures of Hy/a arenicolorfrom Sierra de Tepozotlan, Estado de Mexico, Mexico Body te1npera.ture affects 11t1merot1s aspects of locomotory and physiological perfor1nance of H_vla treef'_rogs (Nav,1s 1996b), In additio11, climatic conditions , inc1ucling te1nperature , are likely to drive the differential distribt1tions of son1e Hyfa species (Otto et al. 2007) . It is thus importa11t to gain a better t111derstanding of the temperatt1re relationships of H_vfa frogs. However, there is relatively little k.110,vn abottt temperatttre relationships in the ge1us H_vla. Here we report on the temperature relationsl1ips of Hylcz arenic·c>lor fro1n Sierra de Tepozotlan, Estad.o de Mexico, Mexico i11 an effort to expand the database of temperatt1re relationships in treefrogs. Materials and Methods We condt1cted tl1is stt1dy i11 Sien·a cle Tepozotlan ( 19° 42" 23 .4"" N, 99° 15' 17 .6'' W a11d 2300 m elevation), in Estado de Mexico, Mexico. Mean ann11al te1nperature a11d preciJJitation are l6°C a11d 6501mn, respectively. Plant species i11clt1de Quercus crassipes, Q. 111,icroplt)il/a, Q. rLtgosa, Bot1tef 0Lta c·Ltrtipe11.du/a, B. grczci Lis, B, liirtLtsa, L_vcitrtiS JJ/1leoides, Piptoc·liaetiun1. fi1nbriatttrn,, Ae-gop<Jgon cer1c/1roides . Festt-tca sp., Pictochaetirt1n_fim/Jriatitn1, Bro1ni1s sp., Aristicla sp., Oertrtetum clandesti11it111, Eragrostis sp. a11d Hilaria ce11ch.roides, pri11cipally (Rzedowski 2006). We captt1red frogs by ha11d. Once captt1red, we recorded sno11t vent lengt11 (SVL, to near-est 1 m1n), body n1ass (to nearest ().2 g, t1sing a spri11g balance), a11d body (Tb; cloacal te1nperat11re, to 11earest 0.2°C). air (1~t; bulb in the sl1ade, 3.0 c111 over the st1bstrate occtipied by the lizard , to nearest 0.2°C), and substrate temperature (Ts; b11lb to the shade on the substrat11m occ11pied by tl1e small liz,1rd, to nearest 0.2°C) ttsing a qL1ick-readi11g tl1e1mometer (Shultetheis, Miller a11d Weber I11c., inter,,al 0-50°C, 0.2 precision). We also recorded each frog's position \ivith regard to solar in-solation as being completely exposed to st1n, in shade , or in a s11n/shade 1nosaic, Frogs that needed a 1najor eff'ort to c,1pture (> 1 111in.) were excltided fro1n temperat11re records. We used 011ly one observation for each frog. Results and Discussion Mean Tb \vas 25. l l + 0.34 °C (N = 48) . Mean Ta was 19.04 ± 0.32 °C (N = 48). Mean 1; \iVas 21.69 ± 0.35 °C (N = 48). Mean Tb for ot1r popt1lation of H. arenicolor is l1igher tl1a1  that observed in a popt1lation of H. ctrenicolor from Colorado (20.7°C; Snyder and Harnmerson 1993). Our observed 1nea11 Tb is wit11in the ra11ge of Tbs observed i1  H)1la n1ic·roc·eplzala and H. ebrac·cata fro1n low elevations in Pa11ama (Navas, 1996b), but is l1igl1er tha11 in the l1igh elevation H. Lavialis (Valdjviseo and Tan1sitt 1974; Navas 1996a,b). H_vla regilla from sot1ther11 California had Tbs that ranged from 14.3 - 22.2 °C (Brattstrom a11d Warre11 1955). H:vla cinerea from Lottisiana had 1octt1rnal Tbs ra11gi11g from 19.1 - 27 .7°C (Wygoda ancl Williams 1991). Body te111perature increased witl1 Ta (N = 48, r2 = 0.18, P = 0.0022; Tb= 16.26 + 0.46Ta) -Body temperature also increased with Ts (N = 48, r2 = 0.28, P = 0.0001; 1'b = 14.02 + 0.51T8) . The T bS of' H . are,iicolor from Colorado tended to be 11igher tha11 Ta bttt lower tha1  Ts (S11yder and Ha1nmerson 1993). The depende1ce of Tb on Ta has bee11 fo t111d in ot11er H_vla species (Valdj vieso and Ta111sitt 1974; Wygoda and Williams 1991; Navas 1996a). Body tem1Jerature i11creased with frog SVL, bt1t only a s1nall amot.1nt of variation 111 Tb was expl,1ined by SVL (N = 48, r2 = 0.08, P = 0.046; Tb= 22.01 + 0.1 3SVL). Body temperat11re was 11ot related to ·frog 111ass (N = 46, r2 = 0.04, P = 0.16). Body temperatt1re was 1ot affected by page 42 Bulletin of the Maryland Herpetological Society Volume 47 Numbers 1-4 January-December 2011 SVL in H. labialis (Valdivieso and Tamsitt 1974). Most frogs " 'ere observed i11 stLn1y microhabitats (30; 62.5%), followecl by 1nosaic n1i-crohabitats (12; 25%) . Few frogs were observed in shade (6; 12.5%) . Microhabitat djd not affect Tb (Table 1; F2,4s = 1.86, P = 0.17) , Ta (Table 1~ F2,4s = 0.06, P = 0.94), orT8 (Table 1; F2,4s = 0.99, P = 0.38). S11yder a11d Ham1nerson (1993) fot1nd all of the H. Clre,iicolor they observed j11 Jttne in Colorado i11 full sun. In conclusion, the temperatt1re relationships vve obser,1ed in H. are11icolor from 'fepozot-lan , Estado de Mexico, Mexico, are fairly similar to previous stt1dies on the tl1erma1 ecology of H. arerzicolor a11d other species ot· H:vla. Table 1. Mean body te1n1Jeratt1re (Tb), air temperature (Ta), and substrate temperatt1re (T8) of Hyla ar-erticolor fott11d i11 SL1n11y, sun/shade n1osaic, and shaded 1nicrohabitats. Mea11s are given+ J SE. Tb (°C) Ta (°C) Ts (°C) Sunny (N=30) 25.41 ±0.35 °C 18.96 ± 0.41 °C 22.06 ± 0 .38 °c Sun/Shade Mosaic (N= l 2) Shaded (N=6) 25 .22 ± 0.83 °C 23.42 + 1.19 °c 19.16 ± 0.63 °C 21.24 ± 0.83 °C 19.25 ± 0.93 °c 20.07 + 1.27 °c Acknowledgments. This study was st1pported b)' the projects: PAPIIT IN 221707, PAPCA 2008-2009; 2009-2010. Literature Cited Brattstrom, B.H., and J.W. Warre11. Navas, C.A. 1955. Observations 01  the ecology and behavior oftl1e Pacific treefrog, H)1la relJilla. 1996a. 1996b. Copeia 1955: 181 - 191. I1nplications of rnjcrohabitat selection ancl patterns of activity on the thermal ecology of high elevation neotropical a11L1rans. Oecologia 108: 617-626. Metabolic physiology, loco1notor performance, a1d ther1na1 niche breadth in Neotropical anurans. Physiol. Zool. 69: 1481-1501. Otto, C.R.V., J .W. Snoclgrass, D.C. Forester, J.C. Mitchell, and R.W. Miller. 2007. Clin1atic variation and the distribution of an amphibia11 polyJJloicly co1nplex. Rzedowski , J. 2006. J.Ani1n. Ecol. 76: 1053-1061. La vegetaci6n de Mexico. 1 ra. Edici6n digital . CONABIO, Mexico 504 pp. S11yder, G .K., and G .A. Hammerso11. 1993. Interrelationships betvveen waterecono1ny a11d thermoreguJation in the canyo11 tree-frog Hyla a,·erzicolor. J. Arid Environ. 25: 32 1-329. Bulletin of the Maryland Herpetological Society page 43 ' Volume 47 Numbers 1-4 January-December 2011 Valdi,1ieso, D. , and J .R . Tamsitt. 1974. Thern1al relations of the 11eotropical frog Hy/a Lahiafis· (Ant1ra: Hyliclae). Life Sci. 0cc. Papers, Royal 0 11tario Mt1s. 26: 1-10. Wygoda, M.L. , and A.A. Wi1 lia1ns . 1991. Body temperatL1re i11 1:ree-ra11gi11g greei1 tree frogs (HJ1la cirzerea): A com-pariso11 'vvith ''typical'' frogs. Herpetologica 47: 328-335. Felipe Correa-Sdncliez.l, Geoffre_y R. S1nit/1,2.4, Guillern·10 A. Woolrich- Piila3, ar,d Jitlio A. Le1nO!i-Espi11a/3 I Ll1borcltc>rio c/e HerJJetc>Logfa, Vivaria, FES /ztaccLLci UNAM. Av. De Lc>s· Bczrrios # 1 Col. Los ReJ1es /ztacala, Tlafne1Jctr1tla, Estado de Mexico. Mexico. C. P. 54090. 2 Departr,iertt of Biolog);, Der1isor1 UrLiversit)J, Granville, Oliio 43023 USA. 3 Lahorcitorio de Ecolog[a, Unidad de Biolog[a, Tec,10/og(a .v Prototipos, FES l ztac·afa UNA M, Av. De Los Barrios# I Col. L<>.r;; Re_ves /ztacala, TlaL,1epar1,tLa , Estado de Mexico, Me.tico . C. P. 54090 . l~eceived: Acce1Jted: page 44 4 Ai1t/1or for Corre~;po11dence: s1nitlzg@deniso11 .edit 6 May 2011 26 .Tuly 2011 Bulletin of the Maryland HerpetolcJgical Society 

Body temperatures of Hyla arenicolor from Sierra de Tepozotlan, Estado de Mexico, Mexico

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Body temperatures of Hyla arenicolor from Sierra de Tepozotlan, Estado de Mexico, Mexico

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