Evaluation of Minimum-Size Limits and Reduced Daily Limits on the Crappie Populations and Fisheries in Five Large Missouri Reservoirs

Colvin, Michael A.

doi:10.1577/1548-8675(1991)011<0585:eomsla>2.3.co;2

Cited by 47 publications

(37 citation statements)

References 5 publications

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“…A review of catch-and-release mortality studies concluded that most mortality occurs within 24 h, but a more complete estimate of the mortality should include delayed mortality (i.e., that occurring beyond the first 24 h postrelease; Muoneke and Childress 1994). Typically, a 3-d observation period is used (e.g., see Matlock et al 1993;Malchoff and Heins 1997), and only a few catch-and-release mortality studies use a longer postrelease observation period (e.g., blue cod Parapercis colias were observed for 14 d : Carbines 1999; largemouth bass Micropterus salmoides for 14-21 d: Schramm et al 1987; spotted seatrout Cynoscion nebulosus for 30 d: Stunz and McKee 2006; white seabass Atractoscion nobilis for 90 d: Aalbers et al 2004; and white crappies Pomoxis annularis for 18 months: Colvin 1991). Observations beyond 3 d are difficult because fish must be confined artificially either in the laboratory or in the field, and such confinement may contribute to further stress and mortality.…”

Section: Recent Data From the Marine Recreational Fisherymentioning

confidence: 99%

Factors Affecting Catch‐and‐Release Mortality of Bluefish

Fabrizio¹,

Scharf

Shepherd

et al. 2008

N American J Fish Manag

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Abstract.-Recreational harvests of bluefish Pomatomus saltatrix along the U.S. coast from Maine to Florida exceed commercial harvests, and in recent years about 60-70% of angler-captured fish are released alive. The proportion of fish that survive hooking, handling, and release back to the ocean is unknown; however, if catch-and-release mortality is high, it may represent a significant component of the overall bluefish mortality rate. We estimated long-term (21-d) hooking mortality rates of field-captured bluefish and investigated the effects of various factors on postrelease mortality. Age, length, and the occurrence of bleeding were significant factors associated with catch-and-release mortality, which we estimated to be 38.8%. About 65% of the mortality was initial mortality, and the remainder was delayed mortality. We also performed a laboratory study to examine the physiological response of bluefish to two independent processes (hooking and release versus transfer in coolers to the laboratory) relevant to the field study. Laboratory-held fish that were hooked and released exhibited elevated concentrations of potassium in their blood, suggesting that they experienced either an osmotic imbalance or cellular damage. Laboratory-held fish exposed to the transfer treatment only exhibited osmotic imbalance (elevated plasma sodium concentration) and evidence of anaerobic metabolism (elevated plasma lactate concentration). Our findings indicate that bluefish age and size contribute to variable levels of metabolic stress and that delayed postrelease mortality is considerable.

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Section: Recent Data From the Marine Recreational Fisherymentioning

confidence: 99%

Factors Affecting Catch‐and‐Release Mortality of Bluefish

Fabrizio¹,

Scharf

Shepherd

et al. 2008

N American J Fish Manag

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“…Increasing the current 12 cm minimum size limit would allow giant clams to reproduce several times before being fished, as sexual maturity (male and female) is assumed to occur at 11 cm [25]. The efficiency of such method has been described widely [74], [75], [76], [77]. It was used for scallops [78] for example and Yau [38] in Moorea island (French Polynesia) used a non-spatial model to show that a size-limit of 13.5 cm for giant clams could locally ensure the best compromises between catches and abundance, independently of recruitment rates.…”

Section: Discussionmentioning

confidence: 99%

Best Management Strategies for Sustainable Giant Clam Fishery in French Polynesia Islands: Answers from a Spatial Modeling Approach

et al. 2013

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The giant clam Tridacna maxima has been largely overexploited in many tropical regions over the past decades, and was therefore listed in appendix II of the Convention of International Trade in Endangered Species (CITES) in 1985. In French Polynesia, several atolls and islands harbor the world’s highest stocks of giant clams in very shallow and accessible areas, which are therefore highly vulnerable to fishing pressure. The local fishery authority (i.e., Direction des Resources Marines or “DRM”) implemented several management schemes in 2002 to control and regulate fishing pressure. However, for further decisions DRM was missing a sensitivity analysis on the effectiveness of the possible management actions. Here, we report on the use of a deterministic Viable Population Analysis (VPA) and spatially-explicit age-based population model that simulated the 30-year trajectory of a Tridacna maxima stock under different management approaches. Specifically, given various scenarios of intra-island larval dispersal, we tested which of No-take-Areas (NTAs), rotational closures, size limits, quotas, and restocking schemes would lead to the highest future stocks in Tubuai and Raivavae, two exploited islands of the Austral archipelago. For both islands, stock abundances were estimated in 2004/2010 and 2005/2010 respectively, and natural mortalities were assessed previously only in Tubuai. When compared to field data, the model successfully predicted the 2010 stocks for Tubuai, but proved to be less reliable for Raivavae, where natural mortality rates may well be different from those on Tubuai. For Tubuai, the spatial model suggested that reducing fishing effort (through fixed quotas) and banning fishing below the 12 cm size limit (as currently implemented) were the most effective management actions to sustain T. maxima populations into the future. Implementing NTAs was of poor effectiveness. NTAs increased giant clam stock inside the protected area, but also increased overfishing in the neighboring areas, and were ineffective overall.

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“…First, a manager might begin by restricting fish harvest. Restrictive regulations (e.g., reduced bag limits and increased minimum-length limits) may reduce total harvest (Colvin, 1991) and fishing pressure. Note, however, that even the most restrictive harvest regulations (i.e., catch-andrelease angling only) will not allow fish populations to support an ever-increasing amount of fishing pressure because of hooking mortality (Muoneke and Childress, 1994).…”

Section: Management Of Anglers Within a Regional Fisherymentioning

confidence: 99%

Luring anglers to enhance fisheries

Martin

Pope

2011

Journal of Environmental Management

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a b s t r a c tCurrent fisheries management is, unfortunately, reactive rather than proactive to changes in fishery characteristics. Furthermore, anglers do not act independently on waterbodies, and thus, fisheries are complex socio-ecological systems. Proactive management of these complex systems necessitates an approachdadaptive fisheries managementdthat allows learning to occur simultaneously with management. A promising area for implementation of adaptive fisheries management is the study of luring anglers to or from specific waterbodies to meet management goals. Purposeful manipulation of anglers, and its associated field of study, is nonexistent in past management. Evaluation of different management practices (i.e., hypotheses) through an iterative adaptive management process should include both a biological and sociological survey to address changes in fish populations and changes in angler satisfaction related to changes in management. We believe adaptive management is ideal for development and assessment of management strategies targeted at angler participation. Moreover these concepts and understandings should be applicable to other natural resource users such as hunters and hikers.

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Evaluation of Minimum-Size Limits and Reduced Daily Limits on the Crappie Populations and Fisheries in Five Large Missouri Reservoirs

Cited by 47 publications

References 5 publications

Factors Affecting Catch‐and‐Release Mortality of Bluefish

Factors Affecting Catch‐and‐Release Mortality of Bluefish

Best Management Strategies for Sustainable Giant Clam Fishery in French Polynesia Islands: Answers from a Spatial Modeling Approach

Luring anglers to enhance fisheries

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