Pond culture of female green sunfish (Lepomis cyanellus) × male bluegill (L. macrochirus) hybrids stocked at two sizes and densities

Tidwell, James H.; Webster, Carl D.; Clark, Julia A.; Brunson, Martin W.

doi:10.1016/0044-8486(94)90047-7

Cited by 24 publications

(21 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By focusing on differences according to gender, the present study reveals that the male bluegills vastly outgrew the B × G hybrid males, which constitute the majority of individuals (80–95%) in B × G hybrid populations (Brunson 1983; Tidwell et al 1994). Even the female bluegills showed a higher growth capacity than the male B × G hybrids.…”

Section: Discussionmentioning

confidence: 84%

“…Bluegills showed markedly higher growth than the B × G hybrids during the 10‐mo study period, growing from an average of 7 to 100 g, whereas B × G hybrids of similar initial weight reached only 50 g. This observation was considered important because B × G hybrids were previously considered to be faster growers than bluegills based on comparative growth studies in ponds (Ellison and Heidinger 1978; Brunson and Robinette 1985, 1986). Because of this prevailing view, the B × G hybrid has received greater attention by researchers and fish producers than the bluegill as a sunfish candidate for the food‐fish market in many areas of the USA (Tidwell et al 1994; NCRAC 2004).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Rearing Male Bluegills Indoors May Be Advantageous for Producing Food‐size Sunfish

Hayward

Wang

2006

J World Aquaculture Soc

View full text Add to dashboard Cite

Abstract.— An indicated demand for sunfish (Lepomis spp.) as a food fish remains untested because of continuing inability to efficiently rear these fishes to required large sizes (≥227 g; 0.5 lbs). A recent study involving parallel, indoor rearing of two sunfishes under favorable conditions showed that bluegills Lepomis macrochirus possessed markedly higher growth capacity than B × G hybrids (F1: male bluegill × female green sunfish, Lepomis cyanellus). B × G hybrids had been thought to possess superior growth capacity and so have received more attention than bluegills as a food‐fish candidate in many areas of the USA. Reanalysis of data from the recent study with emphasis on gender differences revealed that the male bluegills possessed much higher growth capacity than male B × G hybrids, at least from May to March as Age 1 and then early Age 2 fish. Male bluegills reached 67% of food‐market weight within the 10‐mo period from a starting weight of 7 g; male B × G hybrids reached only 24% of this weight. Male bluegills’ more rapid growth versus male B × G hybrids’ apparently involved less growth energy allocation to gonad development. Female bluegills grew slower than male bluegills but also outgrew male and female B × G hybrids whose growth trajectories declined in midsummer (June) and remained largely flat through March. The previous view that B × G hybrids possess higher growth capacity than bluegills was fostered by studies in ponds where bluegill growth can be impeded by high reproduction rates and, as this study reveals, by high densities and exposure to suboptimal temperatures when their growth potential is high. Indoor rearing of male bluegills should ameliorate most pond‐related growth impediments and take fuller advantage of their rapid growth capacity.

show abstract

Section: Discussionmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Rearing Male Bluegills Indoors May Be Advantageous for Producing Food‐size Sunfish

Hayward

Wang

2006

J World Aquaculture Soc

View full text Add to dashboard Cite

show abstract

“…Busch (1985) demonstrated in channel catfish that growth slowed and feed conversion ratios increased during third-year growth. Tidwell et al (1994) reported that decreasing stocking density increased weight gain in hybrid sunfish but did not affect feed conversion. Tidwell et al (1998) reported that during second-year growth largemouth stocked at higher density had significantly lower feed conversion ratios than those stocked at low density.…”

Section: Introductionmentioning

confidence: 98%

Effects of Stocking Density on Third-Year Growth of Largemouth Bass,Micropterussalmoides, Fed Prepared Diets in Ponds

Tidwell

Coyle

Webster

1999

Journal of Applied Aquaculture

Self Cite

View full text Add to dashboard Cite

Largemouth bass, Micropterus salmoides, with an average weight of 383 g were stocked into six 0.04-ha ponds at stocking densities of either 3,750 or 7,500 fish/ha. Fish were fed a custom-formulated floating diet, containing 44% protein, for 334 days, once daily to satiation at water temperatures >5_C and twice weekly at <5_C. At final harvest, there was no significant difference (P > 0.05) in average individual weight, percentage weight gain, feed conversion ratio, or survival of bass stocked at the two densities. Total yield and total production of fish were significantly greater (P < 0.05) for bass stocked at the higher density (3,909 kg/ha and 1,040 kg/ha, respectively) than for bass stocked at the lower density (1,758 kg/ha and 341 kg/ha, respectively). Averaged over the study period, there were no significant differences (P > 0.05) in total ammonia-nitrogen (TAN), nitrite-nitrogen, or un-ionized ammonia concentrations in ponds in which bass were stocked at the two densities. These data indicate that largemouth bass, of the size used in this study, are amenable to pond culture at densities of at least 7,500 fish/ha and that higher stocking densities may be possible or even advantageous. [Article copies available for a fee fromThe Haworth Document Delivery Service: 1-800-342-9678.

show abstract

“…Available data indicate that with the present technology, more than 2 years of rearing are necessary for sunfish to reach food market size in the Midwest (Ellison and Heidinger 1978;Tidwell et al 1994). The consensus of NCRAC's Sunfish Workgroup is that for economic reasons, reduction of grow-out periods to within 2 years is essential for the development of commercial rearing of bluegills or hybrid bluegills as food fish in the northcentral United States Wang 2002, 2006).…”

mentioning

confidence: 96%

Establishment of Mostly Male Groups of Bluegills by Grading Selection and Evaluation of their Growth Performance

Wang¹,

Wallat²,

Hayward

et al. 2009

N American J Aquac

View full text Add to dashboard Cite

Concerns over the economic feasibility of commercial aquaculture production of bluegills Lepomis macrochirus have heightened the need for strategies to enhance growth. Recent studies have shown that individually reared bluegill males can grow twice as fast as females; such studies have generated increased interest in development of mostly male or all‐male populations. In this study, we developed a practical procedure to establish mostly male bluegill groups through grading selection and we tested their growth against that of a normal population. A single cohort of bluegill juveniles was cultured in a pond for 1 year; when the fish reached a mean weight of 30.1 g, the cohort was graded and divided into two mostly male groups (top 25% and top 50% of fish by total length) and a mixed‐sex control group. The percentage of males in each group was as follows: 50.0% in the mixed control group, 75.4% in the top 25% group, and 69.7% in the top 50% group. Weight gain per fish in the top 25% group was significantly greater (P < 0.05) than that in the mixed group throughout most of the experiment. There were no significant differences detected in survival among the three groups, although the top 25% group had survival of 96.0% compared with 90.6% and 90.5% for the top 50% group and the mixed control group, respectively. The top 25% group had the highest percentage (46.3%) of fish reaching 150 g at the end of the experiment, followed by the top 50% group (28.3%), and the mixed control group (12.7%). The coefficient of variation (CV) for weight decreased in all three groups over time; the mostly male groups maintained lower initial and final CV values than did the mixed control group. Results indicate that mostly male bluegill groups are able to grow faster than typical mixed‐sex populations, and social interaction costs among communally reared males did not significantly decrease growth of mostly male populations in the aquaculture settings.

show abstract

Pond culture of female green sunfish (Lepomis cyanellus) × male bluegill (L. macrochirus) hybrids stocked at two sizes and densities

Cited by 24 publications

References 3 publications

Rearing Male Bluegills Indoors May Be Advantageous for Producing Food‐size Sunfish

Rearing Male Bluegills Indoors May Be Advantageous for Producing Food‐size Sunfish

Effects of Stocking Density on Third-Year Growth of Largemouth Bass,Micropterussalmoides, Fed Prepared Diets in Ponds

Establishment of Mostly Male Groups of Bluegills by Grading Selection and Evaluation of their Growth Performance

Contact Info

Product

Resources

About