size: 5036KB - Crocodile Specialist Group

More documents

Recommendations

Info

20 neither should be applied. until the researcher has exanined a scatterplot of the data. '' c. We think that perhaps it rnay be wise for researchers to vrorry less about fitting generaf curves to scatterplots and to concentrate (at least initially) on close examination of the point_cloud itself (lrhich scatterplot. we are convinced, should certainly be presented in any forftal publication). To soire degree all "growth curves'r are abstract human generalizations. Even an individual crocodilian does not al-lrays grow according to a fixed, internal schedufe (that's the lowly sort of thing that young nammals-- vhich basically nust grov or die-- are forced to do) ; rather it responds to the varyj.ng environmental conditions that surround it. growing faster or slower as food and rtarrnth pernit. And when you get a whole population of crocs, the l^thole picture becones even nore cohpfex. Thus in a size-age scatterplot, cohort clusters of outlying data points (or even single outliers) nay, under careful analysis, reveal hore relevant infcjrnation about the biology of the beast than four-digit pararneters fit to abstract rnathernatical curves. (Indeed the rnost important function of these 'tgrowth curvest' hay be that they assist us in the identification of outfiers for systematic analysis.) Anyhov, vhen a1t is said and done, we reckon the very best use of growth curves is to encourage managers and biologists to ask questions like, rrls that extra-fast-growing mafe qoinq to contribute hore than his share of genes to the next generation?rr or 'rwhat the heck is happeninq to the hatch of 1987 anyhorn'?" Literature Cited Andrevrs, R.M. l-9a2. Patterns of growth in reptiles. In: Biology of the reptilia, vol. 13. Physiology D--physiological ecology. c. Gans and F.H. Pugh (eds.). Acadernic Press, Nert York. 273- 320. Brisbin, I.L., Jr. Ninth vorkinqr rneeting. Growth curve analyzes and their application to the conservation and captive nanaqement of crocodifians. Proceedings of the ninth working neetihg of the IUcN/sSc crocodile Specialist Group. (typescript) 1-31. Brisbin, I.L., Jr. and lr1.C. Newman. 1991. Signoid nodels for the uptake, concentration and effects of metals in consurner organisns. water, Air, and soif Pollut. 57-58: 69r'696. 1e Relatively rrassunption-free'r curve-fittingt techniques such as SYSTAT'S l,owEss routine (try various fevels of the ntensionn parameter) are quite appropriate in exploratory Dhases of data analvsis.
21 Brisbin, I.L., Jr., c.c. White, and p.B, Bush. 19g6. pCB antake and the growth of sraterfout: hultivariate analtsis Uis"a on a repararneterized Richards sigmoid hodet. Crowth-SO:tlir. P., lili.S,_ I.L. Brisbin, Jr., M.H. Stnith, and c.c. White. 1989. Eacto_rs affecting the analysis of groia,th patterns of -Large rnamhats. J Mammaf 7o|275_2a3. Wilkinson, L. 1988, SYSTAT: the systern for statistics. sySTAT, Evanston, IL. 823 p.
Page 1 and 2: CROCODILES Proc€€dings of the l
Page 3: FOREWORD The two volumes of this PR
Page 6 and 7: Elsey, R M, McNease, L & Joanen, T:
Page 9 and 10: CFAZ CIIAIRMAN'S OPENING COMMENTS F
Page 11 and 12: PRESENTATION FROM THE MINISTER OF E
Page 13 and 14: Fitting Curves to crocodilian Aqe-s
Page 15 and 16: 7 a.set of uniforrn random nunbers.
Page 17 and 18: 2. VON BERTAI"ANFFY MODEL FOR GROWT
Page 19 and 20: 11 The -following four tables give
Page 21 and 22: UNIFoRU sarnpling MEDfUM sahpl ing
Page 23 and 24: 15 Sectior IV: Actual Croc Data, l,
Page 25 and 26: 1'l (ii) Linear regressron. same ra
Page 27: 1,9 rejecting nufl hypotheses that
Page 31 and 32: Iength lthich corresponds to the ni
Page 33 and 34: 25 Because of lack of funds Eo carr
Page 35 and 36: 27 Despite the fact that during a p
Page 37 and 38: 29 FIGURE N9 2 BLACK CAIIIAN POPULA
Page 39 and 40: I'Effect of diets conplenented vith
Page 41 and 42: 3i Two of the 6 x 2 m. tanks four e
Page 43 and 44: : .i ; -3, E .-1 t FFdF !_9 + + + +
Page 45 and 46: 10 Table IV : fl aernathological Re
Page 47 and 48: 4l 4.- CONCLUSIoNS 1) The most favo
Page 49 and 50: 43 THE INVOLVEMENT OF RURAL COMMUNI
Page 51 and 52: 45 the rainy season and, in conhast
Page 53 and 54: 47 difficulties and the isolation o
Page 55 and 56: 49 Eacb time that one of the villag
Page 57 and 58: 51 CONCLUSION Naturally, these rcsu
Page 59 and 60: 53 LONG-TERM POPUT-A.TION S'ruDIES
Page 61 and 62: 55 'Ile study reporled here was des
Page 63 and 64: 5'7 made of transmilteFequjpped ndm
Page 65 and 66: 59 wilhin the reservoir was lypific
Page 67 and 68: 6l However the use of such winter d
Page 69 and 70: 6.1 surface to breathe (Kellogg 192
Page 71 and 72: 65 ACKNOWLEDGMENTS This work was su
Page 73 and 74: Murphy, T. M., P. M. Wilkinson, J-
Page 75 and 76: 69 t 3 ^ 3 :9s 3P o ;x !B 'rr.l9 3e
Page 77 and 78: 7l FoDd B + i Poud C I Pltllr. l. U
Page 79 and 80:
73 9 October 1991 L t' I L t' 26 Ma
Page 81 and 82:
75 80 -r- 1987-88 + 1991-92 t -40 .
Page 83 and 84:
77 GROWTH RAIE OF CAIMAN (Caiman cr
Page 85 and 86:
79 Values of the life lable paramet
Page 87 and 88:
81 REFERENCES Craig. G.C., D. Si.C.
Page 89 and 90:
83 CUMATIC F{w L Stirldi .6.aiDS EF
Page 91 and 92:
85 2. Behavioral facilitation of re
Page 93 and 94:
87 TeEperature, hy&ic coaditionq aa
Page 95 and 96:
89 The sexual behaviors of irdividu
Page 97 and 98:
9l 2o I E F conuor o.r r.0 r0.0 a0.
Page 99 and 100:
93 Referetrces Ber!, H.A. (1990). T
Page 101 and 102:
95 GROWTH RATES AND BODY CONDITION
Page 103 and 104:
97 LIPID AND FATTY ACID COMPOSMONAL
Page 105 and 106:
99 be removed sustalnably, provided
Page 107 and 108:
101 necessary as the endurance of t
Page 109 and 110:
103 Table 2. The ratio of first sig
Page 111 and 112:
105 3) Movement and dispersal The r
Page 113 and 114:
107 Disease Trend$ on Crocodite Far
Page 115 and 116:
109 Fuigol and other dermar,?ir - d
Page 117 and 118:
111 THE FEEDINC ECOLOGY OF TWO NILE
Page 119 and 120:
113 areas outside the National park
Page 121 and 122:
115 been done for a tlpical populat
Page 123 and 124:
117 ACKNOWLU)GEMENTS This study was
Page 125 and 126:
119 THE STATUS AN'D DISTRIBUTION OF
Page 127 and 128:
Figure l: Crocodile Survey - Tanzan
Page 129 and 130:
123 :rD ES e € a 69 PE e 3 Er t !
Page 131 and 132:
125 Ruaha River (Figure 2) The Ruah
Page 133 and 134:
127 lake Mtera (Figure 4) This is a
Page 135 and 136:
t29 with 6shermenand subsistence f'
Page 137 and 138:
lil Kilimmjaro/Tanga Region Pa gani
Page 139 and 140:
133 The numbers of crccodiles durin
Page 141 and 142:
135 REFERENCES Chabreck, R.H. 1966.
Page 143 and 144:
l -37' 3.1.4 lagal Trad.e Local tra
Page 145 and 146:
l.l9 In order to gecure credibility
Page 147 and 148:
l4l 'rould apply to 6kins of good h
Page 149 and 150:
143 This infdrrDation cduld be supp
Page 151 and 152:
l.l-s ].nternational reEplfnstbitit
Page 153 and 154:
t4'/ illegal sttjns in their pr,r,d
Page 155 and 156:
149 CROCODILE SKIN INDUSTRY IN ETII
Page 157 and 158:
l5l Table 2. Ouotas for Ethiopian c
Page 159 and 160:
153 depriving EWCO of incentive for
Page 161 and 162:
155 A PRELII{] NARY ASStsSS!.IENT O
Page 163 and 164:
15',7 Origin l Payert lltosk Breedi
Page 165 and 166:
159 dropped, producing 23 and l9 eg
Page 167 and 168:
l6l This figure ts even lorrer than
Page 169 and 170:
163 =z 3F \riciNoraj {
Page 171 and 172:
165 References EArr,ER, R.D. ( 1976
Page 173 and 174:
t6'1 IPPIIDIX tt BtoBtE cI0@(DILX n
Page 175 and 176:
l()t/ Backqround l,lelano5uchus nio
Page 177:
t7l The numbers of black cainan c'b
show all

size: 5036KB - Crocodile Specialist Group

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?