The Open Fish Science Journal




(Discontinued)

ISSN: 1874-401X ― Volume 12, 2019

Nest Success, Abundance, and Length Distribution of Age-0 Largemouth Bass in Sanctuaries and Areas Open to Fishing



Vic DiCenzo1, *, Bradley A. Ray2, Michelle Klopfer1, Brian R. Murphy1
1 Department of Fish and Wildlife Conservation, 310 West Campus Drive Virginia Tech Blacksburg, VA 24061, Virginia, United States
2 Wisconsin Department of Natural Resources Escanaba Lake Research Station 3110 Trout Lake Station Boulder Junction, WI 54512, United States

Abstract

Protecting an area from fishing by establishing a sanctuary is one possible management strategy that could protect adults during spawning, potentially enhancing recruitment in freshwater systems. From 2001-2006, Briery Creek Lake (342 ha), Virginia was characterized by high fishing pressure in spring when adults were spawning and low abundance of age-0 Largemouth Bass Micropterus salmoides. Therefore, we created two sanctuaries in 2006 in Briery Creek Lake that were closed to angling and boats; these areas provided protection for nest-guarding male Largemouth Bass. However, the nest-success rate did not differ significantly between open areas and sanctuaries (30-40% nest success). Catch per unit effort of age-0 Largemouth Bass did not differ between areas open to angling (28.8/h and 39.0/h in 2006 and 2007, respectively) and sanctuaries (14.6/h and 22.2/h in 2006 and 2007, respectively). Similarly, mean length-at-capture was not different for age-0 Largemouth Bass between sanctuaries and open areas. Closing spawning areas to fishing may not be an effective management option to increase Largemouth Bass recruitment success in Briery Creek Lake.

Keywords: Fishing, Largemouth bass, Micropterus salmoides, Recruitment, Sanctuaries, Spawning.


Article Information


Identifiers and Pagination:

Year: 2016
Volume: 9
First Page: 51
Last Page: 56
Publisher Id: TOFISHSJ-9-51
DOI: 10.2174/1874401X01609010051

Article History:

Received Date: 13/04/2016
Revision Received Date: 19/08/2016
Acceptance Date: 24/08/2016
Electronic publication date: 28/09/2016
Collection year: 2016

© DiCenzo et al.; Licensee Bentham Open

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.


* Address correspondence to this author at the Department of Fish and Wildlife Conservation, 310 West Campus Drive Virginia Tech Blacksburg, VA 24061, Virginia, United States; Tel: 540-231-0961 x7530; Fax: (607)753-0258; E-mail: vdicenzo@vt.edu




INTRODUCTION

In the United States, Largemouth Bass Micropterus salmoides are a popular target of recreational anglers and thus have considerable economic importance. However, angling-related stress may influence the viability of Largemouth Bass populations [1Gustaveson AW, Wydoski RS, Wedemeyer GA. Physiological response of Largemouth Bass to angling stress. Trans Am Fish Soc 1991; 120(5): 629-36.
[http://dx.doi.org/10.1577/1548-8659(1991)120<0629:PROLBT>2.3.CO;2]
-4Lewin WC, Arlinghaus R, Mehner T. Documented and potential biological impacts of recreational fishing: Insights for management and conservation. Rev Fish Sci 2006; 14(4): 305-67.
[http://dx.doi.org/10.1080/10641260600886455]
]. Angling during spawning may reduce spawning success, resulting in lower recruitment compared to unfished or lightly fished populations [5Philipp DP, Claussen JE, Koppelman JB, et al. Black Bass diversity: multidisciplinary science for conservation. Bethesda, Maryland: American Fisheries Society 2015; pp. 223-34.]. Given the potentially detrimental effects of angling on sportfish populations, many states historically prohibited spring fishing for Black Bass Micropterus spp. to attempt to protect spawning adults and sustain recruitment [6Quinn S. Black Bass: ecology, conservation, and management. In: Philipp DP, Ridgeway MS, Eds. Bethesda, Maryland: American Fisheries Society 2002; pp. 455-65.]. However, such seasonal closures were often unpopular, difficult to enforce, and resulted in conflicting outcomes [2Philipp DP, Toline CA, Kubacki MF, Philipp DB, Phelan FJ. The impact of catch-and-release angling on the reproductive success of smallmouth Bass and Largemouth Bass. N Am J Fish Manage 1997; 17(2): 557-67.
[http://dx.doi.org/10.1577/1548-8675(1997)017<0557:TIOCAR>2.3.CO;2]
, 7Kubacki MF, Phelan FS, Claussen JE, et al. Black Bass: ecology, conservation, and management. In: Philipp DP, Ridgeway MS, Eds. How well does a closed season protect spawning Bass in Ontario?. Bethesda, Maryland: American Fisheries Society 2002; pp. 379-86., 8Jackson JR, Einouse DW, VanDeValk AJ, et al. Black Bass diversity: multidisciplinary science for conservation. Bethesda, Maryland: American Fisheries Society 2015; pp. 181-91.]. Currently, few states manage using closed seasons, although several states enforce catch-and-release fishing during the spring.

Instead of seasonal closures, Kubacki et al. [7Kubacki MF, Phelan FS, Claussen JE, et al. Black Bass: ecology, conservation, and management. In: Philipp DP, Ridgeway MS, Eds. How well does a closed season protect spawning Bass in Ontario?. Bethesda, Maryland: American Fisheries Society 2002; pp. 379-86.] recommended the use of sanctuaries or year-round closed areas, claiming that such sanctuaries are more effective at reducing the negative impacts on Largemouth Bass from angling than are closed seasons. Some successes in the protection and rehabilitation of overfished populations have been attributed to the use of sanctuaries or freshwater protected areas [9Suski CD, Cooke SJ. Conservation of aquatic resources through the use of freshwater protected areas: opportunities and challenges. Biodivers Conserv 2007; 16(7): 2015-29.
[http://dx.doi.org/10.1007/s10531-006-9060-7]
], including conservation of several rare fish species in the western United States [10Miller RR, Pister EP. Management of the Owens Pupfish, Cyprinodon radiosus, in Mono County, California. Trans Am Fish Soc 1971; 100(3): 502-9.
[http://dx.doi.org/10.1577/1548-8659(1971)100<502:MOTOPC>2.0.CO;2]
, 11Means ML, Johnson JE. Movement of threatened ozark cavefish in logan cave national wildlife refuge, arkansas. Southwest Nat 1995; 40(3): 308-13.]. Sanctuaries on the spawning grounds of Lake Trout Salvelinus namaycush aided in the rehabilitation of this species in Lake Superior; spawning sanctuaries are being used as a management strategy in other Great Lakes for Lake Trout restoration [12Krueger CC, Ebener M. Boreal shield watersheds: lake trout ecosystems in a changing environment. In: Ryder RA, Gunn JM, Steedman RJ, Eds. Rehabilitation of cake tort in the great cakes: In past lessons and future challenges. USA: Lewis Publishers 2004; pp. 37-55.]. In marine systems, sanctuaries increased population resilience to overfishing [13Apostolaki P, Milner-Gulland EJ, McAllister MK, et al. Modeling the effects of establishing a marine reserve for mobile fish species. Can J Fish Aquat Sci 2002; 59(3): 405-15.
[http://dx.doi.org/10.1139/f02-018]
, 14Gerber LR, Botsford LW, Hastings A, et al. Population models for marine reserve design: a retrospective and prospective synthesis. Ecol Appl 2003; 13(sp1): 47-64.
[http://dx.doi.org/10.1890/1051-0761(2003)013[0047:PMFMRD]2.0.CO;2]
] by increasing fish abundance, size distribution, and yield-per-recruit [15Halpern BS, Warner RR. Marine reserves have rapid and lasting effects. Ecol Lett 2002; 5(3): 361-6.
[http://dx.doi.org/10.1046/j.1461-0248.2002.00326.x]
]. Sanctuaries may also provide the additional benefit of improving catch rates in areas adjacent to sanctuaries [16Roberts CM, Bohnsack JA, Gell F, Hawkins JP, Goodridge R. Effects of marine reserves on adjacent fisheries. Science 2001; 294(5548): 1920-3.
[http://dx.doi.org/10.1126/science.294.5548.1920] [PMID: 11729316]
].

However, using sanctuaries to improve recruitment of Largemouth Bass has seldom been applied [17Agardy T, Bridgewater B, Crosby MP, et al. Dangerous targets? Unresolved issues and ideological clashes around marine protected areas 2003; 353-67.
[http://dx.doi.org/10.1002/aqc.583]
]. To evaluate the effects of Largemouth Bass sanctuaries, we studied Briery Creek Lake (BCL), an impoundment managed by the Virginia Department of Game and Inland Fisheries (VDGIF). Briery Creek Lake consistently produces trophy-sized (> 3.6 kg) Largemouth Bass. This trophy fishery attracts anglers from across the United States and has received a high amount of fishing pressure since opening to fishing in 1989 [18DiCenzo VJ, Garren DA. Trophy Largemouth Bass abundance and harvest in a central Virginia impoundment: implications for restrictive slot limits. Proceeding of the Annual Southeastern Association of Fish and Wildlife Agencies 2001; pp. 194-207., 19Wilson DM, DiCenzo VJ. Black Bass: ecology, conservation, and management. In: Philipp DP, Ridgeway MS, Eds. Current Status and Future directions for research in the ecology, conservation, and management of Black Bass in North America. Bethesda, Maryland: American Fisheries Society 2002; pp. 583-92.]. Managers employ a protective-slot length limit (355-610 mm) to promote trophy Largemouth Bass abundance. However, population estimates conducted by VDGIF since 2001 have demonstrated lower recruitment to age-1 Largemouth Bass abundances in BCL than in other nearby impoundments. The objectives of this study were to compare Largemouth Bass nest success, relative abundance of age-0 fish, and size structure of age-0 fish in two sanctuaries (where anglers were prohibited) with the remainder of the lake where angling was allowed.

METHODS

Study Site

Briery Creek Lake, a 342-ha impoundment, was created in 1986-87 for flood control and recreation and opened to fishing in 1989. The majority of the watershed around Briery Creek is forested. Much of the existing forested land remained uncut during reservoir construction; therefore, the majority of the lake has abundant woody structure, with standing timber throughout. Aquatic vegetation covers nearly 100% of the shoreline, which has subsequently led to greater water clarity (Secchi depth transparency about 2 m) than during pre-vegetation levels that lasted about 10 years after impoundment (Secchi depth transparency about 1 m). The aquatic vegetation consists of watershield Brasenia schreberi, eelgrass Vallisneria americana, Brazilian elodea Elodea densa, common elodea E. canadensis, and Illinois pondweed Potamogeton illinoensis [20Ray BA. Factors affecting Largemouth Bass recruitment in a trophy Bass reservoir in Virginia, Briery Creek Lake. Dissertation. Blacksburg, Virginia: Virginia Tech 2008.].

The fish species present in BCL include: Largemouth Bass, Bluegill Lepomis macrochirus, Redear Sunfish Lepomis microlophus, Warmouth L. gulosus, Green Sunfish L. cyanellus, Black Crappie Pomoxis nigromaculatus, Blueback Herring Alosa aestivalis, Channel Catfish Ictalurus punctatus, and Chain Pickerel Esox niger [20Ray BA. Factors affecting Largemouth Bass recruitment in a trophy Bass reservoir in Virginia, Briery Creek Lake. Dissertation. Blacksburg, Virginia: Virginia Tech 2008.]. In 2003, BCL fishing effort during the spring (March–May) totaled 58,559 hours, with 88% of the effort (51,256 hours) directed at Largemouth Bass. Anglers released 99% of the Largemouth Bass that were caught [20Ray BA. Factors affecting Largemouth Bass recruitment in a trophy Bass reservoir in Virginia, Briery Creek Lake. Dissertation. Blacksburg, Virginia: Virginia Tech 2008.].

Field Sampling

We established sanctuaries in two coves in BCL in April 2006. The cove at the north end of the lake was 1.0 ha and the southern cove was 2.2 ha; these coves were chosen for topography that facilitated easy exclusion of anglers. These two coves also had similar habitat to other areas of the lake and represented areas that Largemouth Bass had previously been observed spawning. Entry to the two coves was blocked with prominent fencing strung between trees on each side of the coves, while not impeding fish movement. Signs prohibiting fishing in the sanctuaries were placed on the fence, the surrounding trees, and at each boat ramp to alert anglers of the closures. The closures were enforced by the law enforcement division of VDGIF. Other potential closures were not used due to our inability to prominently fence the areas. The rest of the lake remained open to angling and regulated by the protective slot limit. Outside the sanctuaries, we classified lake areas as either coves or non-cove areas, defining coves as inlets with an opening < 300 m between shorelines.

We conducted visual nest surveys by boat every three days between 21 April and 26 May 2007 [20Ray BA. Factors affecting Largemouth Bass recruitment in a trophy Bass reservoir in Virginia, Briery Creek Lake. Dissertation. Blacksburg, Virginia: Virginia Tech 2008.]. We surveyed approximately 70% of the potential littoral spawning habitat of the lake by selecting twelve 1-km shoreline transects to visually observe nests. Each transect encompassed the littoral habitat from the shoreline to a depth of two meters. Three or four transects were surveyed each sampling day, which allowed each transect to be surveyed for new nests on three separate occasions. Additionally, all previously observed nests were monitored every three days by snorkeling, until either hatching was observed and swim-up fry were present (success) or the male had abandoned the nest and no eggs remained (failure). Two of the 1-km transects included the entirety of the sanctuaries plus the adjacent area that was classified as non-cove habitat. We geo-referenced nests and classified them as being in a cove or non-cove area based on the location within the lake in order to make comparisons between the similar habitats of sanctuaries and coves that were open to angling.

We also sampled age-0 Largemouth Bass using pulsed DC electrofishing on nine separate occasions during August-October 2006 and June-September 2007 [20Ray BA. Factors affecting Largemouth Bass recruitment in a trophy Bass reservoir in Virginia, Briery Creek Lake. Dissertation. Blacksburg, Virginia: Virginia Tech 2008.]. Eight 15-minute transects were selected based on the nest survey transects that produced the most nests. Each transect covered approximately the same area that was visually surveyed for nests (1 km), which allowed for 50% of the shoreline to be sampled each night. We recorded the abundance of age-0 Largemouth Bass to determine catch-per-unit-effort (CPUE) and measured age-0 Largemouth Bass for total length (TL, mm).

Data Analyses

We used a two-sample t-test to test for a difference in mean depth of nests in open areas and sanctuaries. We used a chi-square test to determine if open cove areas and open non-cove areas differed in nest success. Open areas did differ; therefore, we used a chi-square test to test for a difference in the mean number of successful nests between open coves and closed coves and open non-cove areas and sanctuaries. Electrofishing catch data (number of fish/h) were log10(X +1) transformed. We compared CPUE and TL in open areas and sanctuaries by using repeated measures analysis of variance (ANOVA) procedures [21Maceina MJ, Bettoli PW, DeVries DR. Use of a split-plot analysis of variance design for repeated-measures fishery data. Fisheries 1994; 19(3): 14-20.
[http://dx.doi.org/10.1577/1548-8446(1994)019<0014:UOASAO>2.0.CO;2]
].

RESULTS

We observed 63 nests in Briery Creek Lake. We found 10 nests in sanctuaries, 28 nests in open coves, and 25 in open non-cove areas (Table 1). The success rate in sanctuaries (30%; 3 successful nests) and open (39.3%; 11 successful nests) coves of the lake did not differ significantly (P = 0.83). We found the highest success rate of nests in open non-cove areas (80%; 20 successful nests), which was significantly higher than sanctuary coves (P < 0.01) and open coves (P < 0.01).

Table 1
Number of Largemouth Bass nests and success rate, of the nests found in open coves, open non-coves, and sanctuaries in Briery Creek Lake, Virginia. Columns with different letters indicate significant differences among areas.


During 2006, CPUE of age-0 Largemouth Bass in sanctuaries ranged from 11.2 - 20.5 fish/h whereas in open areas, CPUE ranged from 16.7 - 45.2 fish/h (Table 2). In 2007, CPUE in sanctuaries and open areas ranged from 13.7 - 42.4 and 17.3 - 56.5 fish/h, respectively. However, for both years combined, catch rates for age-0 Largemouth Bass did not differ between sanctuaries and areas open to angling (F = 3.87; df = 1,69; P = 0.30).

Table 2
Electrofishing catch-per-unit-effort (CPUE) (fish/hour) of age-0 Largemouth Bass collected from sanctuaries and areas open to angling in Briery Creek Lake, Virginia. N is the number of electrofishing transects.


Age-0 Largemouth Bass length did not differ in sanctuaries compared to open areas in 2006 and 2007 (F = 7.91; df = 1,422; P = 0.22). In 2006, age-0 Largemouth Bass mean lengths-at-capture in sanctuaries ranged from 61-100 mm whereas in open areas mean length ranged from 68 - 99 mm (Table 3). We obtained similar results in 2007 where mean lengths ranged from 31 - 80 mm in sanctuaries and 34 - 89 mm in open areas.

Table 3
Mean total length (mm) of age-0 Largemouth Bass collected by electrofishing from sanctuaries and areas open to angling in Briery Creek Lake, Virginia.


DISCUSSION

Angling did not appear to limit Largemouth Bass nest success or recruitment in Briery Creek Lake; we found no differences in age-0 Largemouth Bass relative abundance (CPUE) between sanctuaries and open areas of BCL and greater nest success in non-cove areas open to fishing. In a study of five Michigan lakes, Wagner et al. [22Wagner T, Jubar AK, Bremigan MT. Can habitat alteration and spring angling explain Largemouth Bass nest success? Trans Am Fish Soc 2006; 135(4): 843-52.
[http://dx.doi.org/10.1577/T05-198.1]
] found that the chance of producing swim-up fry did not decrease with increasing fishing pressure. Catch-and-release angling did not change movement or behavior of Pike Esox lucius in a slightly eutrophic lake in Germany [23Klefoth T, Kobler A, Arlinghaus R. The impact of catch-and-release angling on short-term behaviour and habitat choice of northern pike (Esox lucius L.). Hydrobiologia 2008; 601(1): 99-110.
[http://dx.doi.org/10.1007/s10750-007-9257-0]
]. The catch-and release angling that occurs on BCL does not appear to negatively impact nest success rates and therefore would not be expected to influence recruitment.

The observed nest success rates of 30-82% (54% lake-wide) at BCL closely resembled other published nest success rates (38-63% in [24Suski CD, Phelan FJ, Kubacki MF, et al. Black Bass: ecology, conservation, and management. In: Philipp DP, Ridgeway MS, Eds. The use of Sanctuaries for protecting Nesting Black Bass from angling. Bethesda, Maryland: American Fisheries Society 2002; pp. 371-8.]; 44-84% in [2Philipp DP, Toline CA, Kubacki MF, Philipp DB, Phelan FJ. The impact of catch-and-release angling on the reproductive success of smallmouth Bass and Largemouth Bass. N Am J Fish Manage 1997; 17(2): 557-67.
[http://dx.doi.org/10.1577/1548-8675(1997)017<0557:TIOCAR>2.3.CO;2]
]). However, those studies reported higher nest success rates in sanctuaries compared to angler-accessible areas within lakes, which is contrary to our findings. We found only 10 nests within the sanctuaries of BCL and only three of those were successful. This small number of nests may have been insufficient to identify any differences in hatching success between open areas and sanctuaries of the lake.

We did not observe any differences in the length of age-0 Largemouth Bass between sanctuaries and areas open to fishing. However, only two small coves were closed to angling; at only 1% of the total lake area, this may not be a large enough area to identify significant differences in nest success, CPUE of age-0 Largemouth Bass, or length. Larger sanctuaries may provide better insight by providing a greater area for Largemouth Bass to spawn, without effects from catch-and-release angling. However, the popularity of fishing on BCL precluded the experimental closure of more coves.

Previous studies on the beneficial effects of sanctuaries on reproductive success have been conducted on northern lakes that typically have higher water clarity than in southern systems [7Kubacki MF, Phelan FS, Claussen JE, et al. Black Bass: ecology, conservation, and management. In: Philipp DP, Ridgeway MS, Eds. How well does a closed season protect spawning Bass in Ontario?. Bethesda, Maryland: American Fisheries Society 2002; pp. 379-86., 24Suski CD, Phelan FJ, Kubacki MF, et al. Black Bass: ecology, conservation, and management. In: Philipp DP, Ridgeway MS, Eds. The use of Sanctuaries for protecting Nesting Black Bass from angling. Bethesda, Maryland: American Fisheries Society 2002; pp. 371-8.]. In those systems, anglers are able to “sight fish,” visibly targeting a specific nesting fish. That fishing approach may have compounded negative effects of catch-and-release angling on Largemouth Bass reproductive success. The relatively low water clarity of BCL (average spring secchi = 2 m) may limit the amount of sight fishing that can occur, thereby providing a natural sanctuary from angling for deeper nesting Largemouth Bass. Sanctuaries would provide greater protection to fish in systems with longer nest seasons and clearer water than in BCL.

Illegal angling in the sanctuaries could have masked the effects of the experiment. If sanctuaries lack adequate enforcement, the “sanctuary” designation may negatively impact Largemouth Bass reproductive success [24Suski CD, Phelan FJ, Kubacki MF, et al. Black Bass: ecology, conservation, and management. In: Philipp DP, Ridgeway MS, Eds. The use of Sanctuaries for protecting Nesting Black Bass from angling. Bethesda, Maryland: American Fisheries Society 2002; pp. 371-8.]. Anglers view sanctuaries as areas where quality Largemouth Bass may be found, and, without enforcement, these areas may put Largemouth Bass at a higher risk of being captured [24Suski CD, Phelan FJ, Kubacki MF, et al. Black Bass: ecology, conservation, and management. In: Philipp DP, Ridgeway MS, Eds. The use of Sanctuaries for protecting Nesting Black Bass from angling. Bethesda, Maryland: American Fisheries Society 2002; pp. 371-8.]. In this study, VDGIF Conservation Police Officers adequately enforced the closure and witnessed no one fishing in the sanctuaries. Additionally, the areas were marked as closed, and the fencing strung across the coves made it more difficult for anglers to access the areas. Therefore, the lack of significant differences between areas open to angling and sanctuaries did not likely result from illegal angling or insufficient enforcement.

Sanctuaries did not improve Largemouth Bass recruitment in protected areas in BCL. Other limiting factors to recruitment of Largemouth Bass may be overriding any positive impacts on recruitment the sanctuaries may have provided. The early-life prey resources for age-0 Largemouth Bass, predation on age-0 Largemouth Bass, juvenile habitat quality, and potential competition between age-0 Largemouth Bass and Bluegill could also affect Largemouth Bass recruitment and require further investigation.

CONFLICT OF INTEREST

The authors confirm that this article content has no conflict of interest.

ACKNOWLEDGEMENTS

We thank Dan Michaelson for his ideas on improving this project and assistance with fieldwork. This manuscript benefitted from the reviews of Mike Allen and Mike Maceina. Funding for this project was provided by the Virginia Department of Game and Inland Fisheries through the Sport Fish Restoration Act.

REFERENCES

[1] Gustaveson AW, Wydoski RS, Wedemeyer GA. Physiological response of Largemouth Bass to angling stress. Trans Am Fish Soc 1991; 120(5): 629-36.
[http://dx.doi.org/10.1577/1548-8659(1991)120<0629:PROLBT>2.3.CO;2]
[2] Philipp DP, Toline CA, Kubacki MF, Philipp DB, Phelan FJ. The impact of catch-and-release angling on the reproductive success of smallmouth Bass and Largemouth Bass. N Am J Fish Manage 1997; 17(2): 557-67.
[http://dx.doi.org/10.1577/1548-8675(1997)017<0557:TIOCAR>2.3.CO;2]
[3] Cooke SJ, Philipp DP, Schreer JF, et al. Locomotory impairment of nesting male largemouth bass following catch-and-release angling. N Am J Fish Manage 2000; 20(4): 968-77.
[http://dx.doi.org/10.1577/1548-8675(2000)020<0968:LIONML>2.0.CO;2]
[4] Lewin WC, Arlinghaus R, Mehner T. Documented and potential biological impacts of recreational fishing: Insights for management and conservation. Rev Fish Sci 2006; 14(4): 305-67.
[http://dx.doi.org/10.1080/10641260600886455]
[5] Philipp DP, Claussen JE, Koppelman JB, et al. Black Bass diversity: multidisciplinary science for conservation. Bethesda, Maryland: American Fisheries Society 2015; pp. 223-34.
[6] Quinn S. Black Bass: ecology, conservation, and management. In: Philipp DP, Ridgeway MS, Eds. Bethesda, Maryland: American Fisheries Society 2002; pp. 455-65.
[7] Kubacki MF, Phelan FS, Claussen JE, et al. Black Bass: ecology, conservation, and management. In: Philipp DP, Ridgeway MS, Eds. How well does a closed season protect spawning Bass in Ontario?. Bethesda, Maryland: American Fisheries Society 2002; pp. 379-86.
[8] Jackson JR, Einouse DW, VanDeValk AJ, et al. Black Bass diversity: multidisciplinary science for conservation. Bethesda, Maryland: American Fisheries Society 2015; pp. 181-91.
[9] Suski CD, Cooke SJ. Conservation of aquatic resources through the use of freshwater protected areas: opportunities and challenges. Biodivers Conserv 2007; 16(7): 2015-29.
[http://dx.doi.org/10.1007/s10531-006-9060-7]
[10] Miller RR, Pister EP. Management of the Owens Pupfish, Cyprinodon radiosus, in Mono County, California. Trans Am Fish Soc 1971; 100(3): 502-9.
[http://dx.doi.org/10.1577/1548-8659(1971)100<502:MOTOPC>2.0.CO;2]
[11] Means ML, Johnson JE. Movement of threatened ozark cavefish in logan cave national wildlife refuge, arkansas. Southwest Nat 1995; 40(3): 308-13.
[12] Krueger CC, Ebener M. Boreal shield watersheds: lake trout ecosystems in a changing environment. In: Ryder RA, Gunn JM, Steedman RJ, Eds. Rehabilitation of cake tort in the great cakes: In past lessons and future challenges. USA: Lewis Publishers 2004; pp. 37-55.
[13] Apostolaki P, Milner-Gulland EJ, McAllister MK, et al. Modeling the effects of establishing a marine reserve for mobile fish species. Can J Fish Aquat Sci 2002; 59(3): 405-15.
[http://dx.doi.org/10.1139/f02-018]
[14] Gerber LR, Botsford LW, Hastings A, et al. Population models for marine reserve design: a retrospective and prospective synthesis. Ecol Appl 2003; 13(sp1): 47-64.
[http://dx.doi.org/10.1890/1051-0761(2003)013[0047:PMFMRD]2.0.CO;2]
[15] Halpern BS, Warner RR. Marine reserves have rapid and lasting effects. Ecol Lett 2002; 5(3): 361-6.
[http://dx.doi.org/10.1046/j.1461-0248.2002.00326.x]
[16] Roberts CM, Bohnsack JA, Gell F, Hawkins JP, Goodridge R. Effects of marine reserves on adjacent fisheries. Science 2001; 294(5548): 1920-3.
[http://dx.doi.org/10.1126/science.294.5548.1920] [PMID: 11729316]
[17] Agardy T, Bridgewater B, Crosby MP, et al. Dangerous targets? Unresolved issues and ideological clashes around marine protected areas 2003; 353-67.
[http://dx.doi.org/10.1002/aqc.583]
[18] DiCenzo VJ, Garren DA. Trophy Largemouth Bass abundance and harvest in a central Virginia impoundment: implications for restrictive slot limits. Proceeding of the Annual Southeastern Association of Fish and Wildlife Agencies 2001; pp. 194-207.
[19] Wilson DM, DiCenzo VJ. Black Bass: ecology, conservation, and management. In: Philipp DP, Ridgeway MS, Eds. Current Status and Future directions for research in the ecology, conservation, and management of Black Bass in North America. Bethesda, Maryland: American Fisheries Society 2002; pp. 583-92.
[20] Ray BA. Factors affecting Largemouth Bass recruitment in a trophy Bass reservoir in Virginia, Briery Creek Lake. Dissertation. Blacksburg, Virginia: Virginia Tech 2008.
[21] Maceina MJ, Bettoli PW, DeVries DR. Use of a split-plot analysis of variance design for repeated-measures fishery data. Fisheries 1994; 19(3): 14-20.
[http://dx.doi.org/10.1577/1548-8446(1994)019<0014:UOASAO>2.0.CO;2]
[22] Wagner T, Jubar AK, Bremigan MT. Can habitat alteration and spring angling explain Largemouth Bass nest success? Trans Am Fish Soc 2006; 135(4): 843-52.
[http://dx.doi.org/10.1577/T05-198.1]
[23] Klefoth T, Kobler A, Arlinghaus R. The impact of catch-and-release angling on short-term behaviour and habitat choice of northern pike (Esox lucius L.). Hydrobiologia 2008; 601(1): 99-110.
[http://dx.doi.org/10.1007/s10750-007-9257-0]
[24] Suski CD, Phelan FJ, Kubacki MF, et al. Black Bass: ecology, conservation, and management. In: Philipp DP, Ridgeway MS, Eds. The use of Sanctuaries for protecting Nesting Black Bass from angling. Bethesda, Maryland: American Fisheries Society 2002; pp. 371-8.

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Patrice Talaga
(UCB S.A., Belgium)

"Open access journals are a novel concept in the medical literature. They offer accessible information to a wide variety of individuals, including physicians, medical students, clinical investigators, and the general public. They are an outstanding source of medical and scientific information."


Jeffrey M. Weinberg
(St. Luke's-Roosevelt Hospital Center, USA)

"Open access journals are extremely useful for graduate students, investigators and all other interested persons to read important scientific articles and subscribe scientific journals. Indeed, the research articles span a wide range of area and of high quality. This is specially a must for researchers belonging to institutions with limited library facility and funding to subscribe scientific journals."


Debomoy K. Lahiri
(Indiana University School of Medicine, USA)

"Open access journals represent a major break-through in publishing. They provide easy access to the latest research on a wide variety of issues. Relevant and timely articles are made available in a fraction of the time taken by more conventional publishers. Articles are of uniformly high quality and written by the world's leading authorities."


Robert Looney
(Naval Postgraduate School, USA)

"Open access journals have transformed the way scientific data is published and disseminated: particularly, whilst ensuring a high quality standard and transparency in the editorial process, they have increased the access to the scientific literature by those researchers that have limited library support or that are working on small budgets."


Richard Reithinger
(Westat, USA)

"Not only do open access journals greatly improve the access to high quality information for scientists in the developing world, it also provides extra exposure for our papers."


J. Ferwerda
(University of Oxford, UK)

"Open Access 'Chemistry' Journals allow the dissemination of knowledge at your finger tips without paying for the scientific content."


Sean L. Kitson
(Almac Sciences, Northern Ireland)

"In principle, all scientific journals should have open access, as should be science itself. Open access journals are very helpful for students, researchers and the general public including people from institutions which do not have library or cannot afford to subscribe scientific journals. The articles are high standard and cover a wide area."


Hubert Wolterbeek
(Delft University of Technology, The Netherlands)

"The widest possible diffusion of information is critical for the advancement of science. In this perspective, open access journals are instrumental in fostering researches and achievements."


Alessandro Laviano
(Sapienza - University of Rome, Italy)

"Open access journals are very useful for all scientists as they can have quick information in the different fields of science."


Philippe Hernigou
(Paris University, France)

"There are many scientists who can not afford the rather expensive subscriptions to scientific journals. Open access journals offer a good alternative for free access to good quality scientific information."


Fidel Toldrá
(Instituto de Agroquimica y Tecnologia de Alimentos, Spain)

"Open access journals have become a fundamental tool for students, researchers, patients and the general public. Many people from institutions which do not have library or cannot afford to subscribe scientific journals benefit of them on a daily basis. The articles are among the best and cover most scientific areas."


M. Bendandi
(University Clinic of Navarre, Spain)

"These journals provide researchers with a platform for rapid, open access scientific communication. The articles are of high quality and broad scope."


Peter Chiba
(University of Vienna, Austria)

"Open access journals are probably one of the most important contributions to promote and diffuse science worldwide."


Jaime Sampaio
(University of Trás-os-Montes e Alto Douro, Portugal)

"Open access journals make up a new and rather revolutionary way to scientific publication. This option opens several quite interesting possibilities to disseminate openly and freely new knowledge and even to facilitate interpersonal communication among scientists."


Eduardo A. Castro
(INIFTA, Argentina)

"Open access journals are freely available online throughout the world, for you to read, download, copy, distribute, and use. The articles published in the open access journals are high quality and cover a wide range of fields."


Kenji Hashimoto
(Chiba University, Japan)

"Open Access journals offer an innovative and efficient way of publication for academics and professionals in a wide range of disciplines. The papers published are of high quality after rigorous peer review and they are Indexed in: major international databases. I read Open Access journals to keep abreast of the recent development in my field of study."


Daniel Shek
(Chinese University of Hong Kong, Hong Kong)

"It is a modern trend for publishers to establish open access journals. Researchers, faculty members, and students will be greatly benefited by the new journals of Bentham Science Publishers Ltd. in this category."


Jih Ru Hwu
(National Central University, Taiwan)


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