A primary objective of the Iguana Specialist Group is to provide the scientific data that enables a status assessment for the IUCN Red List of Threatened Species. Assessments can be downloaded from the Red List site. The following assessments have been updated recently by ISG members.
Amblyrhynchus cristatus — Vulnerable A2abce+4abce
MacLeod, A., Nelson, K.N. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T1086A177552193.en
Amblyrhynchus cristatus cristatus — Vulnerable A2abce+4abce; B1ab(iii,v)c(iv)
MacLeod, A., Nelson, K.N. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T152328291A177563889.en
Amblyrhynchus cristatus godzilla — Critically Endangered C2a(ii)b
MacLeod, A., Nelson, K.N. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T152330878A177567061.en
Amblyrhynchus cristatus hassi — Endangered B1ab(iii,v)c(iv); C2b
MacLeod, A., Nelson, K.N. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T44175A2992874.en
Amblyrhynchus cristatus hayampi — Endangered B1ac(iv)+2ac(iv)
MacLeod, A., Nelson, K.N. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T152331100A152331156.en
Amblyrhynchus cristatus jeffreysi — Endangered B1ac(iv)+2ac(iv)
MacLeod, A., Nelson, K.N. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T152331073A177567657.en
Amblyrhynchus cristatus mertensi — Endangered A2abce+4abce; B1ab(iii,v)c(iv)+2ab(iii,v)c(iv); C2a(ii)b
MacLeod, A., Nelson, K.N. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T152329949A177565047.en
Amblyrhynchus cristatus nanus — Critically Endangered B1ac(iv)
MacLeod, A., Nelson, K.N. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T44177A2993093.en
Amblyrhynchus cristatus sielmanni — Critically Endangered B1ac(iv)
MacLeod, A., Nelson, K.N. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T44178A2993201.en
Amblyrhynchus cristatus trillmichi — Critically Endangered B1ab(iii,v)c(iv)
MacLeod, A., Nelson, K.N. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T152331440A152331451.en
Amblyrhynchus cristatus venustissimus — Endangered B1ab(iii)c(iv)+2ab(iii)c(iv)
MacLeod, A., Nelson, K.N. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T175537718A2993292.en
Amblyrhynchus cristatus wikelskii — Endangered B1ab(iii,v)c(iv)+2ab(iii,v)c(iv); C2b
MacLeod, A., Nelson, K.N. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T152331459A177569043.en
Brachylophus bulabula — Endangered A2bce+4bce
Fisher, R., Grant, T. & Harlow, P. Published 2012.
http://dx.doi.org/10.2305/IUCN.UK.2012.RLTS.T174471A1414101.en
Brachylophus fasciatus — Endangered A2abce+4abce
Fisher, R., Grant, T. & Harlow, P. Published 2012.
http://dx.doi.org/10.2305/IUCN.UK.2012.RLTS.T19243030A2791124.en
Brachylophus gau — Endangered A2abce+4abce
Fisher, R., Hathaway, S., Gray, K. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T152294642A152294669.en
Brachylophus vitiensis — Critically Endangered A2abce
Harlow, P., Fisher, R. & Grant, T. Published 2012.
http://dx.doi.org/10.2305/IUCN.UK.2012.RLTS.T2965A2791620.en
Conolophus marthae — Critically Endangered B1ab(iii,v)+2ab(iii,v); C2a(ii)
Gentile, G. Published 2012.
http://dx.doi.org/10.2305/IUCN.UK.2012-1.RLTS.T174472A1414375.en
Conolophus pallidus — Vulnerable A1ce; D2
Gentile, G. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T5239A3014028.en
Conolophus subcristatus — Vulnerable A2abce; B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v); C1
Kumar, K., Gentile, G. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T5240A3014082.en
Ctenosaura acanthura — Least Concern
Reynoso, V.H., Vázquez-Cruz, M., Rivera-Arroyo, R.C., Morales-Mávil, J. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T174473A1414410.en
Ctenosaura bakeri — Critically Endangered B1ab(i,ii,iii,v)
Pasachnik, S.A., Martinez, A. & Perez, M.S. Published 2011.
Maryon, D., Ardon, D., Martinez, A., Clayson, S. & Pasachnik, S. Published 2018.
http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T44181A10857252.en
Ctenosaura conspicuosa — Vulnerable D2
Reynoso, V.H., Pacheco-Hoyos, N., Moral-Uribina, W., Salinas Matus, H. & Pasachnik, S.A. Published 2019.
https://www.iucnredlist.org/species/174474/1414432
Ctenosaura flavidorsalis — Near Threatened B1b(ii,iii,v)
Reynoso, V.H., Vázquez-Cruz, M., Rivera-Arroyo, R.C., Malone, C.L. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T44188A2993811.en
Ctenosaura hemilopha — Least Concern
Reynoso, V.H., Vázquez-Cruz, M., Rivera-Arroyo, R.C., Blázquez, M.C. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T174475A1414471.en
Ctenosaura macrolopha — Least Concern
Reynoso, V.H., Vázquez-Cruz, M., Rivera-Arroyo, R.C., Zarza-Franco, E. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T174476A1414477.en
Ctenosaura melanosterna — Endangered B1ab(i,ii,iii,iv,v)
Pasachnik, S., Montgomery, C. & Henningheim, E. Published 2012.
http://dx.doi.org/10.2305/IUCN.UK.2012-1.RLTS.T44189A14857036.en
Ctenosaura nolascensis — Vulnerable D2
Reynoso, V.H. & Pasachnik, S.A. Published 2012.
http://dx.doi.org/10.2305/IUCN.UK.2012-1.RLTS.T174477A1414514.en
Ctenosaura oedirhina — Endangered B1ab(v)+2ab(v)
Green Status Assessment — Moderately Depleted, SRS 57%
Pasachnik, S., Ariano-Sánchez, D., Burgess, J., Montgomery, C.E., &
Köhler, G. Published 2015.
Goode, A.B.C. & Pasachnik, S.A. Published 2019.
https://www.iucnredlist.org/species/44191/122558520
Ctenosaura palearis — Endangered A4acd; B1ab(i,ii,iii,iv,v); C2a(i)
Ariano-Sánchez, D. & Pasachnik, S.A. Published 2011.
Ariano-Sánchez, D., Gil-Escobedo, J., del Valle, E. & Pasachnik, S.A. Published 2019.
https://www.iucnredlist.org/species/44192/129419077
Ctenosaura pectinata — Least Concern
Reynoso, V.H., Vázquez-Cruz, M., Rivera-Arroyo, R.C., Zarza-Franco, E. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T174478A1414553.en
Ctenosaura praeocularis — Data Deficient
Hasbún, C.R. & Pasachnik, S.A. Published 2011.
http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T174479A7078000.en
Ctenosaura similis — Least Concern
Pasachnik, S. Published 2015.
http://dx.doi.org/10.2305/IUCN.UK.2015-1.RLTS.T174480A73611567.en
Ctenosaura quinquecarinata — Data Deficient
Reynoso, V.H., Ubeda, M., Vázquez-Cruz, M., Rivera-Arroyo, R.C., Malone, C.L. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T44193A2993977.en
Cyclura carinata — Endangered A2abce; B2ab(ii,iii,iv)
Gerber, G.P., Colosimo, G. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T6026A3097754.en
Cyclura collei — Critically Endangered B1ab(iii)+2ab(iii)
Green Status Assessment — Critically Depleted, SRS 11%
Grant, T.D., Gibson, R. & Wilson, B.S. Published 2010.
Grant, T.D., & Pasachnik, S. Published 2021.
https://dx.doi.org/10.2305/IUCN.UK.2021-3.RLTS.T6027A206739532.en
Cyclura cornuta — Endangered A2abcde+A4abcde
Pasachnik, S.A. & Carreras De León, R. Published 2019.
https://www.iucnredlist.org/species/6042/3099941
Cyclura cychlura inornata — Critically Endangered B1ab(iii,v)+2ab(iii,v)
Iverson, J., Grant, T.D. & Buckner, S. Published 2019.
https://www.iucnredlist.org/species/6041/3099869
Cyclura lewisi — Endangered B1ab(iii)+2ab(iii)
Burton, F.J. Published 2012.
http://dx.doi.org/10.2305/IUCN.UK.2012.RLTS.T44275A2994409.en
Cyclura nubila caymanensis — Critically Endangered A3bce+4abce
Goetz, M. & Burton, F.J. Published 2012.
http://dx.doi.org/10.2305/IUCN.UK.2012.RLTS.T6043A3100030.en
Cyclura nubila nubila — Vulnerable A2abce+4abce
González Rossell, A., Berovides, V., Alonso Tabet, M. & Cobián Rojas, D. Published 2018.
http://dx.doi.org/10.2305/IUCN.UK.2018-1.RLTS.T6045A3100433.en
Cyclura onchiopsis — Extinct
Powell, R. Published 2011.
http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T173001A6955940.en
Cyclura pinguis — Critically Endangered B1ab(iii)
Bradley, K.A. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T6031A3098403.en
Cyclura stejnegeri — Critically Endangered B1ab(iii)
Garcia, M.A., Figuerola, C. & Grant, T.D. Published 2020.
https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T29605A2790768.en
Cyclura ricordii — Endangered B1ab(i,ii,iii,v)+2ab(i,ii,iii,v)
Pasachnik, S.A. & Carreras De León, R. Published 2019.
https://www.iucnredlist.org/species/6032/3098833
Dipsosaurus dorsalis — Least Concern
Malone, C. & French. S. Published 2019.
https://dx.doi.org/10.2305/IUCN.UK.2019-3.RLTS.T194975A2370621.en
Iguana delicatissima — Critically Endangered A3ce
Breuil, M., Day, M. & Knapp, C. Published 2010.
van den Burg, M., Breuil, M. & Knapp, C. Published 2018.
http://dx.doi.org/10.2305/IUCN.UK.2010-4.RLTS.T10800A3217854.en
Iguana iguana — Least Concern
Bock, B., Malone, CL, Knapp, C., Aparicio, J., Avila-Pires, T.C.S., Cacciali, P., Caicedo, J.R., Chaves, G., Cisneros-Heredia, D.F., Gutiérrez-Cárdenas, P., Lamar, W., Moravec, J., Perez, P., Porras, L.W., Rivas, G., Scott, N., Solórzano, A. & Sunyer, J. Published 2018.
http://dx.doi.org/10.2305/IUCN.UK.2018-1.RLTS.T174481A1414646.en
Iguana iguana iguana Saba subpopulation — Critically Endangered A3ce; B1ab(iii,v)
van den Burg, M.P. & Debrot, A.O. Published 2022.
https://dx.doi.org/10.2305/IUCN.UK.2022-2.RLTS.T220903552A220903555.en
Sauromalus hispidus —Endangered B1b(i,ii,iv,v)c(iv)
Montgomery, C.E. & Mayer, G.C. Published 2010.
Montgomery, C.E., Hollingsworth, B., Kartje, M. & Reynoso, V.H. Published 2019.
https://www.iucnredlist.org/species/174482/130061591
Sauromalus klauberi — Vulnerable D2
Montgomery, C.E., Hollingsworth, B., Kartje, M. & Reynoso, V.H. Published 2019.
https://www.iucnredlist.org/species/174483/1414907
Sauromalus slevini — Near Threatened B1a+2a
Montgomery, C.E., Hollingsworth, B., Kartje, M. & Reynoso, V.H. Published 2019.
https://www.iucnredlist.org/species/174484/1414913
Sauromalus varius — Vulnerable D2
Montgomery, C.E., Hollingsworth, B., Kartje, M. & Reynoso, V.H. Published 2019.
