全部 標題 作者
關鍵詞 摘要

OALib Journal期刊
ISSN: 2333-9721
費用:99美元

查看量下載量

相關文章

Ultrastructure of the spermatozoon of Potamonautes perlatus sidneyii (Heterotremata, Brachyura, Crustacea)

Histomorphology of the digestive tract of Chonopeltis australis (Crustacea: Branchiura)

Cocoon production and hatching rates of Branchiura sowerbyi Beddard (Oligochaeta: Tubificidae)

Evaluation of the haematological parameters in Piaractus mesopotamicus Holmberg (Osteichthyes, Characidae) with Argulus sp. (Crustacea, Branchiura) infestation and treatment with organophosphate

The First Record of Argulus Foliacesus (Crustacea: Branchiura) Infesta-tion on Lionhead Goldfish (Carassius Auratus) in Iran

Parasitism by argulids (Crustacea: Branchiura) in piranhas (Osteichthyes: Serrasalmidae) captured in the Cai?ara bays, upper Paraguay River, Pantanal, Mato Grosso state, Brazil

Parasitism by argulids (Crustacea: Branchiura) in piranhas (Osteichthyes: Serrasalmidae) captured in the Cai ara bays, upper Paraguay River, Pantanal, Mato Grosso state, Brazil

Reproductive cycle of Branchiura sowerbyi (Oligochaeta: Naididae: Tubificinae) cultivated under laboratory conditions

ET0預測的卡爾曼濾波修正ANFIS模型研究
A study on the modified ANFIS model by the Calman filter for ET0 prediction

Pathways of Care for Patients with Suspected Cancer of the Pancreas: A Tiered Questionnaire-Based Survey of Medical Personnel Across a Single United Kingdom Calman-Hine Cancer Network

更多...

Bioaccumulation of copper in the tissues of Potamonautes warreni (Calman) (Crustacea, Decapoda, Branchiura), from industrial, mine and sewage-polluted freshwater ecosystems

Keywords: Bioaccumulation of copper , tissue , Potamonautes warreni , Natalspruit River , Copper , Bronkhorstspruit River , midgut gland , gills , crabs , carapace , muscle , copper concentration , bioaccumulation factors

Full-Text   Cite this paper   Add to My Lib

Abstract:

ENGLISH ABSTRACT: The copper concentration detected in the water and sediments of the Natalspruit River, Bronkhorstspruit River and Nooitgedacht Dam exceeded certain stated limits for the protection of aquatic life. Despite considerable individual variation, the general ranking of copper concentrations in the various tissues was carapace < muscle < gonads < midgut gland < gills. Seasonal variation was detected in the bioaccumulation of copper in crabs sampled from the Natalspruit River. However, this phenomenon did not occur in crabs from the other two water bodies. A significant increase in copper concentrations was detected with a decrease insize, indicating that the size of the crabs is an important influencing factor in the bioaccumulation of copper. It was also found that more copper accumulated in the ovary than in the testis per unit weight. The bioaccumulation factors (BF) calculated for the different tissues with respect to the water were highest in the gills and midgut gland (785,00 - 1257,50 and 432,00 - 1340,00, respectively). The BF with respect to the copper concentration in the sediments was comparatively low for all the tissues (<0,1O- 2,74). lt appears that P.warreni is able to regulate the copper concentrations in its various tissues and is therefore not a suitable indicator of the presence of copper in the aquatic environment. ********* AFRIKAANSE OPSOMMING: Die koperkonsentrasies wat gevind is in die water en sedimente van die Natalspruitrivier, Bronkhorstspruitrivier en Nooitgedacht Dam het sekere neergelegde riglyne vir die beskerming van akwatiese lewe oorskry. Ten spyte van ho individuele variasies, was die algemene verhouding in die koperkonsentrasies tussen die verskillende weefsels, karapaks < spier < gonades < spysverteringsklier

Full-Text

comments powered by Disqus

Contact Us

service@oalib.com

QQ:3279437679

微信:OALib Journal

久草在现在线中文字幕