Relationship Between Largemouth Bass Recruitment and Water Level Dynamics in a Puerto Rico Reservoir

Özen, Özcan; Noble, Richard L.

doi:10.1080/07438140509354416

Cited by 11 publications

(14 citation statements)

References 20 publications

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“…Water level fluctuations can influence the abundance, distribution and life cycles of lacustrine fishes (Gasith & Gafny, 1990;Winfield, 2004). The reproductive success of some littoral spawning species is positively correlated with water level increases prior to, and during spawning (Maceina & Stimpert, 1998;Sammons et al, 1999Sammons et al, , 2001Ozen & Noble, 2005). Whilst the causes of these relationships are often not understood, in some systems greater reproductive success has been linked to the inundation of suitable spawning habitats (Beam, 1983;Miranda et al, 1984;Gafny et al, 1992;Rowe et al, 2002a).…”

Section: Introductionmentioning

confidence: 99%

Reproductive biology of the threatened golden galaxias Galaxias auratus Johnston and the influence of lake hydrology

Hardie

White

Barmuta

2007

Journal of Fish Biology

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Golden galaxias Galaxias auratus (31-235 mm fork length, L F ) were collected monthly from littoral habitats in Lakes Crescent and Sorell, Tasmania, Australia, between July 2000 and December 2002. Spawning habitats were identified and monitored in both lakes, and surveyed in Lake Crescent. Trends in gonado-somatic indices and reproductive stages of development indicated that gonad development in both sexes begins in midsummer and peaks in late autumn to early winter. Males mature at smaller sizes (50% at 52 mm L F ) than females (50% at 76 mm L F ), larger individuals are predominately females (95% of fish !138 mm L F ), and overall male to female ratios are female biased (c. 1:2). Spawning occurs late autumn to early spring (water temperatures ¼ 1Á4-9Á7°C) with peaks in spawning activity in winter (mean water temperatures <5°C). Demersal adhesive eggs (c. 1Á5 mm diameter) were found on cobble substrata (c. 20-250 mm diameter) in littoral areas (c. 0Á2-0Á6 m deep) and fecundity of fish 71-181 mm L F ranged from 619 to 14 478 eggs. The rate of change in water level over the 20 days prior to monthly sampling was important in explaining the occurrence of spent fish and this accounted for temporal differences in spawning between the populations. Lake hydrology influences the reproductive cycle of G. auratus by possibly providing a stimulus for spawning and it controls the availability of spawning habitat in Lake Crescent. Seasonal hydrological cycles (i.e. rises during late autumn to winter) and a minimum water level of 802Á20 m Australian Height Datum in Lake Crescent during autumn (above which littoral areas of cobble substratum are inundated) are critical to G. auratus populations.

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Section: Introductionmentioning

confidence: 99%

Reproductive biology of the threatened golden galaxias Galaxias auratus Johnston and the influence of lake hydrology

Hardie

White

Barmuta

2007

Journal of Fish Biology

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“…Impacts are most extreme when regulated water levels are unnaturally low before and during spawning Noble 2002, 2005;Kahl et al 2008), and during YOY hatching, such that there is limited habitat availability and suitability (Gafny et al 1992;Wilcox and Meeker 1992), strongly impacting recruitment and year-class strength (Kohler et al 1993;Neal et al 2001;Ozen and Noble 2005). Regulated water level fluctuations (e.g., rises and recessions) during spawning can negatively affect juvenile fish densities (Miranda and Lowery 2007), partly due to the loss of physical structural complexity (Neal et al 2001).…”

Section: Spawning and Recruitmentmentioning

confidence: 99%

Ecological impacts of winter water level drawdowns on lake littoral zones: a review

2017

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with r-selected life history strategies and with functional traits resistant to direct and indirect drawdown effects. Fish assemblages, though less directly affected by winter drawdowns (except where there is critically low dissolved oxygen), experience negative effects via indirect pathways like decreased food resources and spawning habitat. We identify eight general research gaps to guide future research that could improve our understanding about the complex effects of winter drawdowns on littoral zone ecology.

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“…Ozen and Noble (2002) found a potential management tool for stimulating largemouth bass (Micropterus salmoides) spawning by water level increase during the spawning season in systems where water temperature is suitable. Besides this, the authors found a relationship between largemouth bass recruitment and water level dynamics (Ozen and Noble, 2005). As well as for largemouth bass, the littoral zone is important as spawning habitat also for roach (Rutilus rutilus) and juvenile roach use this habitat as place of refuge from predation (e.g.…”

Section: Introductionmentioning

confidence: 97%

The impact of water level fluctuations on the year class strength of roach: Implications for fish stock management

et al. 2008

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Water level fluctuations in a drinking water reservoir (Saidenbach Reservoir, Saxony, Germany) and length-frequency data of roach (Rutilus rutilus) derived from gillnet catches were studied over a period of eight succeeding years and subsequently analysed with respect to level change and cohort establishment. The results indicate a strong impact of water level on the year class strength of roach. Constantly high water level with large areas of inundated plants led to a very strong roach year class. Conversely, decreasing water level shortly after the spawning period was found to result in a total loss of the new roach year class. Any other possible factors influencing year class strength of roach (such as food, temperature, winter duration) may only play a role if the water level after spawning remained relatively stable. Consequently, water quantity management in reservoirs can be used as a biomanipulation tool to reduce the planktivorous fish stock and to improve water quality, which should be an interesting option especially in drinking water reservoirs.

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Relationship Between Largemouth Bass Recruitment and Water Level Dynamics in a Puerto Rico Reservoir

Cited by 11 publications

References 20 publications

Reproductive biology of the threatened golden galaxias Galaxias auratus Johnston and the influence of lake hydrology

Reproductive biology of the threatened golden galaxias Galaxias auratus Johnston and the influence of lake hydrology

Ecological impacts of winter water level drawdowns on lake littoral zones: a review

The impact of water level fluctuations on the year class strength of roach: Implications for fish stock management

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