scholarly journals Habitat segregation and migration in tropical anguillid eels, Anguilla bengalensis bengalensis and A. bicolor bicolor

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Takaomi Arai ◽  
Inn-Ju Chai ◽  
Yoshiyuki Iizuka ◽  
Chih-Wei Chang
Keyword(s):  
Life History ◽  
Habitat Use ◽  
Habitat Preferences ◽  
Sympatric Species ◽  
Peninsular Malaysia ◽  
Habitat Segregation ◽  
Otolith Sr:Ca Ratios ◽  
Sr:Ca Ratios ◽  
And Migration ◽  
Continental Growth

Abstract Anguillid eels of the genus Anguilla, which have a unique catadromous life history, are widely distributed across many parts of the world. However, little research has been conducted on the behavioural mechanisms of habitat segregation between sympatric species in tropical anguillid eels. To understand the ecological and behavioural mechanisms involved in the life history and migration of tropical anguillid eels, strontium (Sr):calcium (Ca) ratios were examined in otoliths of A. bengalensis bengalensis (41 specimens) and A. bicolor bicolor (130 specimens) collected from ten rivers in northwestern Peninsular Malaysia. The otolith Sr:Ca ratios revealed different habitat use between the two species. The broad range of otolith Sr:Ca ratios and habitat shift found in A. bicolor bicolor suggested that its habitat utilization was opportunistic in environments of varying salinity. A. bicolor bicolor prefers to live in the midstream to downstream areas with tidal influences. A. bengalensis bengalensis, however, was found to only reside in freshwater environments throughout their continental growth. A. bengalensis bengalensis tends to live in upstream area with no tidal influence. Their habitat use, migratory history, and habitat distribution indicate that habitat segregation occurs between the two species, leading to the different habitat preferences in tropical river systems.

scholarly journals Life history scan using otolith Sr：Ca ratios of diadromous fish in the Gouno River, western Japan.

2015 ◽  
Vol 18 (2) ◽  
pp. 147-154 ◽  
Author(s):  
Tetsuya UMINO ◽  
Masaki YAMAMOTO ◽  
Naoki SASADA ◽  
Kenichi OHARA
Keyword(s):  
Life History ◽  
Diadromous Fish ◽  
Otolith Sr:Ca Ratios ◽  
Sr:Ca Ratios ◽  
Western Japan

Life history of Coilia nasus from the Yellow Sea inferred from otolith Sr:Ca ratios

2012 ◽  
Vol 95 (4) ◽  
pp. 503-508 ◽  
Author(s):  
Tao Jiang ◽  
Jian Yang ◽  
Hongbo Liu ◽  
Xin-qiang Shen
Keyword(s):  
Life History ◽  
Yellow Sea ◽  
The Yellow Sea ◽  
Coilia Nasus ◽  
Otolith Sr:Ca Ratios ◽  
History Of ◽  
Sr:Ca Ratios

scholarly journals Facultative amphidromy and pelagic larval duration plasticity of Rhinogobius formosanus (Teleostei, Gobioidei)

ZooKeys ◽  
2020 ◽  
Vol 951 ◽  
pp. 91-107
Author(s):  
Te-Yu Liao ◽  
Wen-Chien Huang ◽  
Yoshiyuki Iizuka ◽  
Ming-Tai Chou ◽  
Jen-Chieh Shiao
Keyword(s):  
Life History ◽  
Early Life History ◽  
Pelagic Larval Duration ◽  
Early Developmental Stage ◽  
Larval Duration ◽  
Otolith Sr:Ca Ratios ◽  
Growth Increments ◽  
Sr:Ca Ratios ◽  
Otolith Sr:Ca Ratio ◽  
Feitsui Reservoir

Rhinogobius formosanus Oshima, 1919 has long been considered an amphidromous goby. However, a landlocked population recently found in the Jingualiao Creek upstream of the Feitsui Reservoir in Taipei suggests that R. formosanus may complete its life in the river. This study aims to verify the habitat use of the landlocked population of R. formosanus collected from the Feitsui Reservoir and an amphidromous population collected in Malian Creek using otolith Sr:Ca ratio analysis. The hypothesis that early life history varies between the landlocked and migratory gobies was also tested. Genetic analyses show that the Feitsui Reservoir and Malian Creek populations are not genetically different. Rhinogobius formosanus from Malian Creek showed high-to-low otolith Sr:Ca ratios suggesting that these specimens spent a planktonic larval stage in the sea followed by a freshwater life at later stages. In contrast, R. formosanus from the Feitsui Reservoir showed constant lower otolith Sr:Ca ratios, implying a landlocked life history of fish in the creek upstream of the reservoir. In addition, the analysis of growth increments showed a longer pelagic larval duration for the fish in the Malian Creek (58.8 days) than those in the Feitsui Reservoir (38.8). Variation of pelagic larval duration in two genetically homogenous populations implies acclimatization to the reservoir by the landlocked gobies. This study shows that R. formosanus, like some other congeners, is capable of adapting to a freshwater landlocked environment in its early developmental stage and supports the hypothesis that landlocked populations may have a shorter pelagic larval duration.

Environmental habitat use and migration of Plecoglossidae and Osmeridae fish

2008 ◽  
Vol 88 (3) ◽  
pp. 637-640
Author(s):  
Madoka Ohji ◽  
Aya Kotake ◽  
Takaomi Arai
Keyword(s):  
Life Histories ◽  
Full Range ◽  
Behavioural Plasticity ◽  
Migration Strategy ◽  
Freshwater Environment ◽  
Migration Patterns ◽  
Otolith Sr:Ca Ratios ◽  
Sr:Ca Ratios ◽  
And Migration ◽  
High Degree

The life histories of Plecoglossidae and Osmeridae fish collected from Japanese fresh, brackish, and seawaters were studied by examining the strontium (Sr) to calcium (Ca) ratios in their otoliths. The Sr:Ca ratios in the otoliths changed with the salinity of the habitat. The fish living in a freshwater environment showed consistently low Sr:Ca ratios throughout the otolith. The fish were identified as a standard freshwater type. In contrast, fish collected from the intertidal zone showed higher otolith Sr:Ca ratios than those in the standard freshwater type, and the ratios fluctuated along the growth phase. In the present study, in addition to the representative migration pattern reported previously, other migration patterns were found to show consistently high Sr:Ca ratios throughout the otolith in several Osmeridae fish. Those results indicate that these fish have a flexible migration strategy with a high degree of behavioural plasticity and an ability to utilize the full range of salinity throughout their life history.

Use of microsatellite DNA and otolith Sr:Ca ratios to infer genetic relationships and migration history of four morphotypes of Rhinogobius sp. OR

2009 ◽  
Vol 56 (4) ◽  
pp. 373-379 ◽  
Author(s):  
Kenichi Ohara ◽  
Momoko Hotta ◽  
Daisuke Takahashi ◽  
Takashi Asahida ◽  
Hitoshi Ida ◽  
...  
Keyword(s):  
Microsatellite Dna ◽  
Genetic Relationships ◽  
Otolith Sr:Ca Ratios ◽  
Migration History ◽  
History Of ◽  
Sr:Ca Ratios ◽  
And Migration

movements and life history patterns of the skipjack tuna katsuwonus pelamis in the western pacific, as revealed by otolith sr:ca ratios

2005 ◽  
Vol 85 (5) ◽  
pp. 1211-1216 ◽  
Author(s):  
takaomi arai ◽  
aya kotake ◽  
sadaaki kayama ◽  
miki ogura ◽  
yoshiro watanabe
Keyword(s):  
Life History ◽  
Western Pacific ◽  
Western Pacific Ocean ◽  
Skipjack Tuna ◽  
Katsuwonus Pelamis ◽  
Otolith Sr:Ca Ratios ◽  
Sr:Ca Ratios ◽  
Life History Patterns ◽  
Off Sanriku ◽  
The Western Pacific

the strontium (sr) and calcium (ca) concentrations in the otoliths of the skipjack tuna katsuwonus pelamis collected in the western pacific ocean were examined by wavelength dispersive x-ray spectrometry on an electron microprobe. otolith sr:ca ratios of the tunas collected off the marshall islands in the tropical waters were constant over the life history transect of the otolith. in contrast, ratios in most tunas collected off sanriku in the temperate waters in october fluctuated from low to high at 1100–1800 μm from the core. a similar fluctuation of otolith sr:ca ratio from low to high was found in a skipjack tuna that was tagged and released off sanriku, and then recaptured off the palau islands. therefore, at least two life history patterns of the skipjack tunas, of global migration toward northern temperate regions and local residence in tropical spawning grounds, are suggested by specimens collected in the western pacific ocean.

scholarly journals What drives variation in habitat use by Anolis lizards: habitat availability or selectivity?

2006 ◽  
Vol 84 (6) ◽  
pp. 877-886 ◽  
Author(s):  
M.A. Johnson ◽  
R. Kirby ◽  
S. Wang ◽  
J.B. Losos
Keyword(s):  
Habitat Use ◽  
Geographic Variation ◽  
Forest Type ◽  
Habitat Preferences ◽  
Sympatric Species ◽  
Habitat Characteristics ◽  
Habitat Availability ◽  
Microhabitat Use ◽  
Forest Types

Geographic variation in habitat availability may drive geographic variation in a species’ habitat use; alternatively, species adapted to particular habitat characteristics may use a habitat regardless of its availability within an environment. In this study, we investigated habitat use of two sympatric species of Anolis lizards that are morphologically specialized to use different microhabitats. We examined variation in microhabitat use and availability among four distinct forest types. In each forest type, we quantified available microhabitats (i.e., perch diameter, angle of inclination, and visibility), as well as microhabitats actually used by each species. We found that species consistently differed in microhabitat use, corresponding to each species’ morphological specializations. However, microhabitat use of both species varied among sites. This variation in Anolis gundlachi Peters, 1876 reflected differences in microhabitat availability, while the variation in Anolis krugi Peters, 1876 resulted from differential microhabitat selectivity. These results indicate that both habitat availability and habitat preferences must be examined in multiple localities for a species to understand the causes of variation in its habitat use.

Habitat use and migratory behaviour of pikeperch Sander lucioperca in Lithuanian and Latvian waters as inferred from otolith Sr:Ca ratios

2017 ◽  
Vol 198 ◽  
pp. 43-52 ◽  
Author(s):  
Linas Ložys ◽  
Jen-Chieh Shiao ◽  
Yoshiyuki Iizuka ◽  
Atis Minde ◽  
Žilvinas Pūtys ◽  
...  
Keyword(s):  
Habitat Use ◽  
Migratory Behaviour ◽  
Sander Lucioperca ◽  
Otolith Sr:Ca Ratios ◽  
Sr:Ca Ratios
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