scholarly journals Disparities in habitat use and migratory behavior between tropical eel Anguilla marmorata and temperate eel A. japonica in four Taiwanese rivers

2003 ◽  
Vol 261 ◽  
pp. 233-242 ◽  
Author(s):  
JC Shiao ◽  
Y Iizuka ◽  
CW Chang ◽  
WN Tzeng
2009 ◽  
Vol 204 (1-4) ◽  
pp. 69-78 ◽  
Author(s):  
Quang Dung Le ◽  
Kotaro Shirai ◽  
Duc Cu Nguyen ◽  
Nobuyuki Miyazaki ◽  
Takaomi Arai

2018 ◽  
Author(s):  
Novalina Serdiati ◽  
Samliok Ndobe ◽  
Abigail Moore ◽  
Deddy Wahyudi

Demand for tropical eel seed has been increased and many tropical eel populations are under pressure. To conserve eel biodiversity and manage eel populations sustainably, it is necessary to identify eel species and their recruitment patterns at regional and watershed scales. The research objective was to determine the species composition and temporal recruit-ment patterns of glass eels recruiting to Palu River in Central Sulawesi. Glass eels sampling were conducted in January-April 2009, May-November 2010 and April-December 2011. Identification under anaesthetic (15-17.5 ppm clove oil solution) was based mainly on the number of ano-dorsal vertebrae (ADV). Species composition was dominated by two commercially species, Anguilla marmorata and A. bicolor pacifica with substantial variation and no clear temporal patterns. Specimens of other species that important from conservation and biodiversity aspects were present at each month but cannot be accurately identified using the ADV method. DNA analysis method is required to identify these specimens.


2002 ◽  
Vol 140 (2) ◽  
pp. 309-316 ◽  
Author(s):  
Arai T. ◽  
Marui M. ◽  
Miller M. ◽  
Tsukamoto K.

2001 ◽  
Vol 220 ◽  
pp. 291-294 ◽  
Author(s):  
HY Sugeha ◽  
A Shinoda ◽  
M Marui ◽  
T Arai ◽  
K Tsukamoto

Author(s):  
Yusuke Kumai ◽  
Mari Kuroki ◽  
Kentaro Morita

It is known that environmental parameters, such as water depth, size of substrate material, and current velocity influence the organization of stream fish communities. However, few studies have investigated the effects of these parameters on sympatric freshwater eels. Here, the habitat use of two anguillid eels, Anguilla marmorata Quoy and Gaimard, 1824 and A. japonica Temminck and Schlegel, 1846, coexisting in the same river systems in Japan was investigated. It was found that the tropical species A. marmorata exclusively utilized habitats with larger substrate materials, fewer fallen leaves and less leaf detritus, higher current velocity, and lower turbidity than the temperate species A. japonica, and the distributions of the two anguillid eels were clearly segregated. Thus, when both species co-occur in the same river systems, clear flowing mainstems and tributaries are preferred habitats for A. marmorata, while stagnant muddy estuaries, backwater areas, irrigation channels, and reservoirs are preferred habitats for A. japonica. These habitat segregations were consistent through body-size increases and life-stage developments from elver to yellow eel and did not show ontogenetic shifts. The findings indicated that both species had strong habitat preferences, and these environmental parameters must be considered in the conservation of anguillid eels in sympatric zones.


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