Reproductive impairment and intersexuality in Gomphina veneriformis (Bivalvia: Veneridae) by the tributyltin compound

A well-established xenoandrogen, tributyltin (TBT) causes sexual interferences in various animal models including gastropods. In bivalves, the disrupting effects of TBT on reproduction are largely unevaluated. In this study, we carried out a test on reproduction of the bivalve (Gomphina veneriformis...

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Main Authors: Jung, Jun Park, Yun, Kyung Shin, Silas, S.O. Hung, Romano, Nick, Yong, Pil Cheon, Jae, Won Kim
Format: Article
Language:English
Published: Taylor & Francis 2015
Online Access:http://psasir.upm.edu.my/id/eprint/46152/1/Reproductive%20impairment%20and%20intersexuality%20in%20Gomphina%20veneriformis%20%28Bivalvia%20Veneridae%29%20by%20the%20tributyltin%20compound.pdf
http://psasir.upm.edu.my/id/eprint/46152/
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spelling my.upm.eprints.461522018-03-31T02:23:21Z http://psasir.upm.edu.my/id/eprint/46152/ Reproductive impairment and intersexuality in Gomphina veneriformis (Bivalvia: Veneridae) by the tributyltin compound Jung, Jun Park Yun, Kyung Shin Silas, S.O. Hung Romano, Nick Yong, Pil Cheon Jae, Won Kim A well-established xenoandrogen, tributyltin (TBT) causes sexual interferences in various animal models including gastropods. In bivalves, the disrupting effects of TBT on reproduction are largely unevaluated. In this study, we carried out a test on reproduction of the bivalve (Gomphina veneriformis) affected by TBT (0.4, 0.6, and 0.8 μg L−1). The experimental period was 36 weeks, starting in October during the inactive stage of the clam's reproductive cycle. The sex ratio (F:M) was 1:1.00 in the control group but changed to 1:1.37 in all the exposed groups with 0.8 μg L−1 TBT, leading to significantly higher values in male (1:1.54; P = 0.009). Gonadal maturity (ripe stage frequency) of males in the exposure groups was higher than females. The gonad index (GI) of females significantly decreased when exposed to 0.6 and 0.8 μg L−1 TBT. The prevalence of intersex was significantly different between males and females in all exposure groups, which became significantly different (P −1 after 36 weeks. These results suggest that TBT, a xenoandrogen, may lead to skewed sex ratio toward males, inhibit sexual maturation of the females, and also induce intersex in G. veneriformis as an imposex of gastropods. Therefore, reproductive indicators (sex ratio, gonadal development, and intersexuality) of bivalves may be used as useful bioindicators in monitoring marine pollution by TBT compounds. Taylor & Francis 2015-12 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/46152/1/Reproductive%20impairment%20and%20intersexuality%20in%20Gomphina%20veneriformis%20%28Bivalvia%20Veneridae%29%20by%20the%20tributyltin%20compound.pdf Jung, Jun Park and Yun, Kyung Shin and Silas, S.O. Hung and Romano, Nick and Yong, Pil Cheon and Jae, Won Kim (2015) Reproductive impairment and intersexuality in Gomphina veneriformis (Bivalvia: Veneridae) by the tributyltin compound. Animal Cells and Systems, 19 (1). pp. 61-68. ISSN 1976-8354; ESSN: 2151-2485 10.1080/19768354.2014.995225
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description A well-established xenoandrogen, tributyltin (TBT) causes sexual interferences in various animal models including gastropods. In bivalves, the disrupting effects of TBT on reproduction are largely unevaluated. In this study, we carried out a test on reproduction of the bivalve (Gomphina veneriformis) affected by TBT (0.4, 0.6, and 0.8 μg L−1). The experimental period was 36 weeks, starting in October during the inactive stage of the clam's reproductive cycle. The sex ratio (F:M) was 1:1.00 in the control group but changed to 1:1.37 in all the exposed groups with 0.8 μg L−1 TBT, leading to significantly higher values in male (1:1.54; P = 0.009). Gonadal maturity (ripe stage frequency) of males in the exposure groups was higher than females. The gonad index (GI) of females significantly decreased when exposed to 0.6 and 0.8 μg L−1 TBT. The prevalence of intersex was significantly different between males and females in all exposure groups, which became significantly different (P −1 after 36 weeks. These results suggest that TBT, a xenoandrogen, may lead to skewed sex ratio toward males, inhibit sexual maturation of the females, and also induce intersex in G. veneriformis as an imposex of gastropods. Therefore, reproductive indicators (sex ratio, gonadal development, and intersexuality) of bivalves may be used as useful bioindicators in monitoring marine pollution by TBT compounds.
format Article
author Jung, Jun Park
Yun, Kyung Shin
Silas, S.O. Hung
Romano, Nick
Yong, Pil Cheon
Jae, Won Kim
spellingShingle Jung, Jun Park
Yun, Kyung Shin
Silas, S.O. Hung
Romano, Nick
Yong, Pil Cheon
Jae, Won Kim
Reproductive impairment and intersexuality in Gomphina veneriformis (Bivalvia: Veneridae) by the tributyltin compound
author_facet Jung, Jun Park
Yun, Kyung Shin
Silas, S.O. Hung
Romano, Nick
Yong, Pil Cheon
Jae, Won Kim
author_sort Jung, Jun Park
title Reproductive impairment and intersexuality in Gomphina veneriformis (Bivalvia: Veneridae) by the tributyltin compound
title_short Reproductive impairment and intersexuality in Gomphina veneriformis (Bivalvia: Veneridae) by the tributyltin compound
title_full Reproductive impairment and intersexuality in Gomphina veneriformis (Bivalvia: Veneridae) by the tributyltin compound
title_fullStr Reproductive impairment and intersexuality in Gomphina veneriformis (Bivalvia: Veneridae) by the tributyltin compound
title_full_unstemmed Reproductive impairment and intersexuality in Gomphina veneriformis (Bivalvia: Veneridae) by the tributyltin compound
title_sort reproductive impairment and intersexuality in gomphina veneriformis (bivalvia: veneridae) by the tributyltin compound
publisher Taylor & Francis
publishDate 2015
url http://psasir.upm.edu.my/id/eprint/46152/1/Reproductive%20impairment%20and%20intersexuality%20in%20Gomphina%20veneriformis%20%28Bivalvia%20Veneridae%29%20by%20the%20tributyltin%20compound.pdf
http://psasir.upm.edu.my/id/eprint/46152/
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score 13.209306