首页|Hotspot of Adult Cuban Treefrog and Cane Toad Multi-organ Abnormality in Suburban South-west Florida

Hotspot of Adult Cuban Treefrog and Cane Toad Multi-organ Abnormality in Suburban South-west Florida

扫码查看
原文链接
  • NETL
  • NSTL
  • 维普
  • 万方数据
This study represents a continuation of the Florida hotspot of tadpole abnormality found in the South-west Florida suburban roadside drainage ditches in 2012 to determine if the adult frogs and toads frequenting the study sites were anatomically abnormal. The gross examination of all organs included 397 adult anurans and 40 metamorphs representing five anuran species: Osteopilus septentrionalis (N=364), Rhinella marina (N=60), Lithobates sphenocephala (N=7), Anaxyrus terrestris (N=5) and Anaxyrus americanus (N=1). The gonads, liver, kidney and intestines were abnormal at a frequency of 87.4％. The few normal anurans (12.6％) were females and young male adults. We found a significant difference in organ abnormality type and frequency between sexes. Almost all frog and toad males had testicular abnormality (92％) with only 6％ with normal testes, whereas the female gonad abnormality was lower, at 41.6％. Hermaphroditism was found in both sexes at a frequency of 26.2％. The toads had a significantly higher frequency of hermaphroditism than the frogs. The toad hermaphroditism frequency was found to be 40％, whereas the frog hermaphroditism 23.3％. A hermaphrodite Cane toad male with a female phenotype coexisted with the normal male phenotype hermaphrodite. The fertility of 27 in situ pairs was assessed. The fertile testicular abnormal male and hermaphrodite pairs produced offspring with abnormal larval morphology. This information adds new evidence of the effect of chemicals on wild populations and the effect on non-target species which has always been underestimated.

gonadhermaphroditemalformationOsteopilus septentrionalisRhinella marina

Sharon Pratt ANZALDUA、Javier GOLDBERG

展开 >

Private University, 27427 Horne Ave Bonita Springs, Florida 34135, USA

Instituto de Bio y Geociencias del NOA (IBIGEO-CONICET), CCT-Salta, 9 de Julio 14, Rosario de Lerma, Salta 4405, Argentina

We thank the National Park Service, Everglades National Park, South Florida Collection Management Center for research project anWe thank the National Park Service, Everglades National Park, South Florida Collection Management Center for research project an

Permit EVER-2013-SCI-0021EVER2014-SCI-0019 Study EVER-00493

2020

亚洲两栖爬行动物研究(英文版)
中国科学院成都生物研究所

亚洲两栖爬行动物研究(英文版)

CSCDSCI
影响因子：0.2
ISSN：2095-0357
年,卷(期)：2020.11(2)
  • 53