Migration, residency and habitat utilisation by wild and cultured Japanese eels ( Anguilla japonica ) in a shallow brackish lagoon and inflowing rivers using acoustic telemetry

2020 ◽  
Author(s):  
Takuji Noda ◽  
Toshihiro Wada ◽  
Hiromichi Mitamura ◽  
Manabu Kume ◽  
Takuhei Komaki ◽  
...  
Keyword(s):  
Acoustic Telemetry ◽  
Anguilla Japonica ◽  
Brackish Lagoon

scholarly journals Use of rocks as refuges by Japanese eel, Anguilla japonica, in artificial pond, revealed by acoustic telemetry.

2019 ◽  
Vol 22 (1) ◽  
pp. 83-92
Author(s):  
Kenzo KAIFU ◽  
Ryoma TAKENO ◽  
Junichi TAKAGI ◽  
Kotaro ICHIKAWA ◽  
Ryoshiro WAKIYA ◽  
...  
Keyword(s):  
Acoustic Telemetry ◽  
Anguilla Japonica ◽  
Japanese Eel ◽  
Artificial Pond

scholarly journals Habitat use of Japanese eel, Anguilla japonica, in brackish water lake, revealed by acoustic telemetry.

2019 ◽  
Vol 22 (1) ◽  
pp. 73-82
Author(s):  
Kenzo KAIFU ◽  
Ryoma TAKENO ◽  
Hiromichi MITAMURA ◽  
Junichi TAKAGI ◽  
Kotaro ICHIKAWA ◽  
...  
Keyword(s):  
Habitat Use ◽  
Brackish Water ◽  
Acoustic Telemetry ◽  
Anguilla Japonica ◽  
Japanese Eel ◽  
Water Lake ◽  
Brackish Water Lake

Long-term monitoring provides insight into estuarine top predator (Carcharhinus leucas) resilience following an extreme weather event

2020 ◽  
Vol 639 ◽  
pp. 169-183
Author(s):  
P Matich ◽  
BA Strickland ◽  
MR Heithaus
Keyword(s):  
Habitat Use ◽  
Acoustic Telemetry ◽  
South Florida ◽  
Behavioral Variability ◽  
Catch Per Unit Effort ◽  
Ontogenetic Shifts ◽  
Carcharhinus Leucas ◽  
Acute Disturbance ◽  
Cold Snap

Chronic environmental change threatens biodiversity, but acute disturbance events present more rapid and immediate threats. In 2010, a cold snap across south Florida had wide-ranging impacts, including negative effects on recreational fisheries, agriculture, and ecological communities. Here, we use acoustic telemetry and historical longline monitoring to assess the long-term implications of this event on juvenile bull sharks Carcharhinus leucas in the Florida Everglades. Despite the loss of virtually all individuals (ca. 90%) within the Shark River Estuary during the cold snap, the catch per unit effort (CPUE) of age 0 sharks on longlines recovered through recruitment within 6-8 mo of the event. Acoustic telemetry revealed that habitat use patterns of age 0-2 sharks reached an equilibrium in 4-6 yr. In contrast, the CPUE and habitat use of age 3 sharks required 5-7 yr to resemble pre-cold snap patterns. Environmental conditions and predation risk returned to previous levels within 1 yr of the cold snap, but abundances of some prey species remained depressed for several years. Reduced prey availability may have altered the profitability of some microhabitats after the cold snap, leading to more rapid ontogenetic shifts to marine waters among sharks for several years. Accelerated ontogenetic shifts coupled with inter-individual behavioral variability of bull sharks likely led to a slower recovery rate than predicted based on overall shark CPUE. While intrinsic variation driven by stochasticity in dynamic ecosystems may increase the resistance of species to chronic and acute disturbance, it may also increase recovery time in filling the diversity of niches occupied prior to disturbance if resistive capacity is exceeded.

Isolation of two types of cDNA encoding growth hormone receptor-like genes in the Japanese eel, Anguilla japonica

2002 ◽  
Vol 68 (sup1) ◽  
pp. 959-960 ◽  
Author(s):  
YUICHI OZAKI ◽  
HARUHISA FUKADA ◽  
YUKINORI KAZETO ◽  
SHINJI ADACHI ◽  
AKIHIKO HARA ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Hormone Receptor ◽  
Growth Hormone Receptor ◽  
Anguilla Japonica ◽  
Japanese Eel
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