Larval and juvenile fishes occurring with flood tides on an intertidal mudflat in the Tama River estuary, central Japan

Kanou, Kouki; Sano, Mitsuhiko; Kohno, Hiroshi

doi:10.1007/s10228-005-0267-5

Cited by 19 publications

(13 citation statements)

References 16 publications

(14 reference statements)

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“…In the present study 12 species of fishes were recorded in low-tide and 31 species in high-tide conditions. The number of fish species recorded in the studied mudflat during high tide was higher than in other geographical areas, as recorded in previous studies: 22 fish species were recorded on the mudflats of Tagus estuary (Salgado et al 2004), 17 fish species on an intertidal mudflat of an Australian estuary (Morrison et al 2002), 20 in an intertidal mudflat of an estuarine system in Japan (Kanou et al 2005) and 18 in France (Amara and Paul 2003).…”

Section: Discussionsupporting

confidence: 66%

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Seasonal dynamics of fish assemblages in an intertidal mudflat of Indian Sundarbans

Chaudhuri¹,

Mukherjee²,

Homechaudhuri³

2013

Sci. Mar.

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SUMMARY: In the present study, the seasonal and inter-annual fish assemblage structure of intertidal mudflats of Indian Sundarbans was analysed during tidal cycles. A total of 31 fish species belonging to 22 families and 9 orders were collected during high tide, whereas only 12 were recorded during low tide. Fish assemblage descriptions were based on several community descriptors, namely diversity (H′), species richness (S), species dominance (D), and species evenness (J) and on an ecological guild classification. A canonical correspondence analysis (CCA) was performed to evaluate the relationship between estuarine habitat and fish assemblages in the mudflat habitat during inundated and exposed conditions. All the diversity indices showed marked seasonal and inter-annual variations. Temporal variations were also found in fish assemblage structure in both tidal conditions. Estuarine species were the most important ecological guild of the mudflats during both high and low tides. Of all the abiotic variables examined, CCA showed that salinity, pH and nutrients were the most important influencing fish assemblage during high tide. Total dissolved solids, water temperature and salinity were significant during low tide. Considering the importance of mudflats in supporting fish diversity, the present study emphasizes the increased efforts for conservation of this habitat in the Indian Sundarbans.Keywords: ichthyofaunal diversity, seasonal variation, tidal variation, mudflats, Bray-Curtis similarity, CCA. RESUMEN: Dinámica estacional De comuniDaDes De peces en una marisma intermareal De sunDarbans inDio. -En el presente estudio, la estructura estacional e interanual de comunidades de peces en el intermareal fangoso de Sundarbans se analizó durante ciclos de marea. 31 especies pertenecientes a 22 familias y 9 órdenes fueron recogidas durante la marea alta, mientras que sólo 12 se registraron durante la marea baja. Las comunidades se describieron varios descriptores: diversidad (H′), riqueza de especies (S), dominancia de especies (D) y uniformidad de especies (J) y una clasificación ecológica de comunidad. Se realizó un análisis de correspondencia canónico (CCA) para evaluar la relación entre hábitat estuárico y comunidades de peces durante condiciones inundadas y expuestas. Todos los índices de diversidad mostraron marcadas diferencias estacionales e interanuales. También se encontraron variaciones temporales en la estructura del conjunto de peces en tanto las condiciones de la marea. Especies estuarinas (ES) fue el grupo ecológico más importante de las marismas de Sundarbans tanto durante la marea alta como en la baja.Palabras clave: diversidad íctica, variación estacional, variación de marea, marismas, similitud de Bray-Curtis, CCA. Scientia Marina 77(2)

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Section: Discussionsupporting

confidence: 66%

“…However, in addition to all the changes in environmental conditions, many species change their habitats according to their ontogeny or seasonal rhythms, which means that relations between different species and their environment or habitat are spatially and seasonally dynamic (Morrison et al 2002, Kanou et al 2005.…”

Section: Discussionmentioning

confidence: 99%

Seasonal dynamics of fish assemblages in an intertidal mudflat of Indian Sundarbans

Chaudhuri¹,

Mukherjee²,

Homechaudhuri³

2013

Sci. Mar.

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“…The total activity space used by each animal was determined for day, night, and 24 h (total) periods using minimum convex polygon analysis in the Animal Movement Extension for ArcView (Hooge and Eichenlaub 2000). Movements between positions recorded from 07:00 to 19:00 were categorized as daytime and movements between 19:00 and 07:00 were categorized as nighttime to coincide with local sunrise and sunset times.…”

Section: Activity Spacementioning

confidence: 99%

Movement patterns and water quality preferences of juvenile bull sharks (Carcharhinus leucas) in a Florida estuary

et al. 2009

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Acoustic telemetry was used to examine the size of daily activity space, small-scale movement patterns, and water quality preferences of juvenile bull sharks in the Caloosahatchee River, Florida. Movement pattern analysis included rate of movement, swimming depth, linearity, direction, tidal influence, diel pattern, and correlation with environmental variables. Manual tacking occurred before and after a large freshwater influx which divided the sharks into two groups based on movement patterns. The first group displayed increased rate of movement, distance traveled, and space utilization at night, and movements correlated with salinity, temperature, and dissolved oxygen. The second group had an increased rate of movement, distance traveled, and space utilization during the day, and movements correlated with temperature, dissolved oxygen, turbidity and pH. These juvenile bull sharks displayed distinct diel movement patterns that were influenced by physical factors, which may account for the distribution of this top-level predator in the Caloosahatchee River.

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“…Several studies have demonstrated that numerous coastal and estuarine fishes move onto tidal mudflats with the rising tide and back to the subtidal zone with the ebbing tide (Morrison et al 2002;Kanou et al 2005a), because the whole substratum of these vast tidal mudflat areas is exposed at low tide, with water remaining only in isolated pools and channels. This movement of juvenile fishes is directly related to feeding dynamics and the avoidance of potential predators (e.g., Gibson et al 1996;Kneib 1997;Hampel et al 2003;Kanou et al 2005b).…”

Section: Introductionmentioning

confidence: 99%

Seasonal dynamics of fishes in tidepools on tidal mudflats in the Tama River estuary, central Honshu, Japan

et al. 2011

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We investigated seasonal dynamics of fish in tidepools on tidal mudflats in the Tama River estuary, Japan. A total of 1,156 individuals of 8 gobiid species were collected from May 2008 to April 2009. The total abundance of fishes peaked in September and October. Of three dominant species, Acanthogobius flavimanus was found only in spring and early summer, whereas Pseudogobius masago and Mugilogobius abei occurred in all seasons. The utilization patterns of tidepools with/without cobbles were different among the latter two species.

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Larval and juvenile fishes occurring with flood tides on an intertidal mudflat in the Tama River estuary, central Japan

Cited by 19 publications

References 16 publications

Seasonal dynamics of fish assemblages in an intertidal mudflat of Indian Sundarbans

Seasonal dynamics of fish assemblages in an intertidal mudflat of Indian Sundarbans

Movement patterns and water quality preferences of juvenile bull sharks (Carcharhinus leucas) in a Florida estuary

Seasonal dynamics of fishes in tidepools on tidal mudflats in the Tama River estuary, central Honshu, Japan

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