Title: Resources and conservation valuation of fishes of Jiuduansha wetland in Changjiang River estuary
Abstract: The Jiuduansha wetland lying on the Changjiang River estuary is a neonatal alluvion. There are 128 species of fishes recorded in this water area which belong to 18 orders and 48 families. The Perciformes show a dominate part in this fauna, there are 43 species of it, occupying 33.6% of the total. In addition, there are 16 species of Cypriniformes, 11 species of Clupeiformes, 9 species of Tetraodontiformes, and 54 species of the other 14 orders. About 30% of the total species are estuarine fishes and sea fishes, respectively; one fifth freshwater fishes; one tenth sea coastal fishes; and one tenth diadromous fishes. The fishfauna can be regarded as a transitional fauna between the lower reaches of the Changjiang River and the East China Sea. Except the estuarine fishes, the other species appear seasonally. If divided by body length, about one forth is ponysize fishes (body length no more than 20cm after being matured), three fifths are middlesize fishes (20 to 50cm) and one tenth are bigsize fishes (more than 50cm). There are hardly typical phytoplanktivores and few piscivores. Most species are benthivores, detritivores and zooplanktivores. By reason of five species of national protected animals, typical character of estuarine fishfauna, abundant species and diversity of ecological styles, conserving Jiuduansha wetland is very important, not only to the fishes fauna of Changjiang River estuary, but also to the fishes resources of the whole Changjiang River and the northern East China Sea and southern YellowSea.
Publication Year: 2003
Publication Date: 2003-01-01
Language: en
Type: article
Access and Citation
Cited By Count: 5
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot