Results 171 to 180 of about 2,701 (211)

Seasonal variation in imposex intensity ofThais clavigera

Chinese Journal of Oceanology and Limnology, 2005
Imposex, specifically caused by TBT pollution, refers to the superimposition of male sexual characteristics in gastropod females. Seasonal variation of imposex intensity inThais clavigera from both slightly and severely contaminated sites in Hong Kong waters was studied from 1988 to 1999. The male penis length showed significant difference between both
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Pugilina morio L., a New Imposex Exhibitor from South American Estuarine Environments: Approach for a Non-Lethal Method to Evaluate Imposex

Bulletin of Environmental Contamination and Toxicology, 2012
This is the first report on imposex occurrence in Pugilina morio. Imposex levels in P. morio from Ceará River Estuary were assessed by a non-lethal method. The obtained imposex parameters were: percentage = 37.1 %, female penis length index (FPLI) = 0.93 mm, relative penis length index (RPLI) = 6.5 %, and vas deferens sequence index (VDSI) = 1.0 ...
Deyse, de Azevedo, Cristina, de Almeida Rocha-Barreira, Helena, Matthews-Cascon, Ítalo Braga, Castro   +3 more
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Imposex in the golden apple snail Pomacea canaliculata in Taiwan

Science of The Total Environment, 2006
The golden apple snail Pomacea canaliculata (Lamarck, 1822) was introduced into Taiwan intentionally in the early 1980s and has become a recurring pest that seriously threatens aquatic crops. In this study, a field description of imposex with a developed penis sheath and penis in female golden apple snails from crop/domestic wastewater drainage sites ...
Wen-Hui, Liu, Yuh-Wen, Chiu, Da-Ji, Huang, Ming-Yie, Liu, Ching-Chang, Lee, Li-Lian, Liu   +5 more
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Quality assurance of imposex and intersex measurements in marine snails

J. Environ. Monit., 2002
Collaboration between the QUASIMEME and BEQUALM projects has proved to be an effective mechanism to further the development of quality assurance procedures for the measurement of the biological effects of tributyltin (imposex and intersex) to meet the requirements of international and national marine monitoring programmes.
Ian M, Davies, Annagh, Minchin
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Triphenyltin induces imposex in Nucella lapillus through an aphallic route

Aquatic Toxicology, 2016
Triphenyltin (TPT) was used until recently as a biocide in antifouling systems and nowadays is still applied as an agriculture pesticide in some countries. This compound is known to cause imposex (the imposition of male characters in females of gastropod molluscs) in a very limited number of species, when compared with tributyltin (TBT), the ...
Filipe, Laranjeiro, Paula, Sánchez-Marín, Ana, Barros, Susana, Galante-Oliveira, Carmen, Moscoso-Pérez, Verónica, Fernández-González, Carlos, Barroso   +6 more
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Imposex reduction and residual butyltin contamination in southern Brazilian harbors

Environmental Toxicology and Chemistry, 2012
Abstract The imposex incidence was appraised in South American gastropods, considering the scenario before and after the global ban of tributyltin (TBT). A statistically significant reduction in imposex indexes was observed in Stramonita haemastoma collected in 2006 and 2010 from areas under the influence of four coastal harbors from ...
Ítalo Braga, Castro, Martina, Rossato, Gilberto, Fillmann   +2 more
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Imposex induction in laboratory reared juvenile Buccinum undatum by tributyltin (TBT)

Environmental Toxicology and Pharmacology, 2002
Here we report a series of experiments on the development and occurrence of imposex in the common whelk, Buccinum undatum, under the influence of (chronic) exposure to butyltin compounds. The main objective of the experiments was to obtain more information about the effects of organotin compounds in the marine environment, which possibly relate to the ...
Mensink, B.P., Kralt, H., Vethaak, A.D., ten Hallers-Tjabbers, C.C., Koeman, J.H., van Hattum, B., Boon, J.P.   +6 more
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The neuropeptide APGWamide induces imposex in the mud snail, Ilyanassa obsoleta

Peptides, 2000
We investigated whether neuropeptides which control sexual differentiation in mollusks can induce imposex-a condition where female snails grow male accessory sex organs after exposure to tributyltin (TBT). Mud snails, Ilyanassa obsoleta, were dosed with one of four neuropeptides: APGWamide, conopressin, LSSFVRIamide, or FMRFamide for seven or fourteen ...
E, Oberdörster, P, McClellan-Green
exaly   +3 more sources

Imposex and reproductive failure in Hydrobia ulvae (Gastropoda: Prosobranchia)

Marine Biology, 1997
Hydrobia ulvae specimens collected from 16 stations along the German North Sea and Baltic coasts exhibited imposex (occurrence of male parts in addition to the female genital system). For the purposes of comparison, a description of both the male and unaffected female genital systems is presented.
U. Schulte-Oehlmann, J. Oehlmann, P. Fioroni, B. Bauer   +3 more
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ความผิดปกติทางเพศของหอยทะเลฝาเดียวที่เกิดจากสารป้องกันการเกาะติดของสิ่งมีชีวิต : ระยะที่ 3 การเหนี่ยวนำให้เกิดความผิดปกติทางเพศ (Imposex induction) ในห้องปฏิบัติการ

2012
ในการศึกษาครั้งนี้ได้ทำการทดลองชักนำให้เกิดความผิดปกติเพศหอยกับหอยทะเลในสกุล Nassarius sp. (วงศ์ Nassariidae) 2 ชนิด คือ N. livecens และ N. stolatus โดยการเติมสารไตรบิวทิลทินคลอไรด์ที่ความ เข้มข้นต่างๆ ลงในตะกอนทรายและทำการเลี้ยงเป็นเวลา 8 สัปดาห์ในห้องปฏิบัติการ เพื่อดูลักษณะความ ผิดปกติและอัตราการเกิดความผิดปกติดังกล่าว โดยหอยทะเลชนิด N. livecens เมื่
openaire   +1 more source