Stability of swimming performance and activity hierarchies among wild largemouth bass at multiple temporal scales: evidence for context-dependent shuffling between seasons

2010 ◽  
Vol 88 (3) ◽  
pp. 324-333 ◽  
Author(s):  
K. C. Hanson ◽  
C. T. Hasler ◽  
M. R. Donaldson ◽  
S. J. Cooke
Keyword(s):  
Largemouth Bass ◽  
Swimming Performance ◽  
Micropterus Salmoides ◽  
Teleost Fishes ◽  
Laboratory Studies ◽  
Four Seasons ◽  
Locomotory Performance ◽  
Stable Performance ◽  
The Individual ◽  
Individual Repeatability

Laboratory-based studies of locomotory performance in many taxa have noted that individuals form stable hierarchies of organismal performance. Though laboratory studies of teleost fishes have consistently demonstrated individual repeatability of swimming performance, this phenomenon has rarely been studied in the field and never across multiple years. Using a whole-lake acoustic telemetry array with submetre accuracy, we assessed the individual repeatability of two metrics of swimming performance (daily distance traveled and mean daily swimming speed) within four seasons during a year (fall, winter, spring, and summer), among these seasons, and between winters of 2 years. Largemouth bass ( Micropterus salmoides (Lacepède, 1802)) formed stable performance hierarchies within seasons except spring and no sex-specific differences in rankings were noted. Individual swimming performance was not repeatable among seasons during 1 year or across multiple winters. Seasonal changes in environmental and intrinsic biological conditions appear to result in a reshuffling of performance hierarchies, perhaps reflecting individual differences in organismal physiology.

scholarly journals Distinct expression and activity profiles of largemouth bass (Micropterus salmoides) estrogen receptors in response to estradiol and nonylphenol

2007 ◽  
Vol 39 (4) ◽  
pp. 223-237 ◽  
Author(s):  
Tara Sabo-Attwood ◽  
Jason L Blum ◽  
Kevin J Kroll ◽  
Vishal Patel ◽  
Detlef Birkholz ◽  
...  
Keyword(s):  
Largemouth Bass ◽  
Micropterus Salmoides ◽  
Hepatic Expression ◽  
Estrogen Response ◽  
Reporter Assays ◽  
Impaired Health ◽  
Estrogenic Contaminants ◽  
The Individual ◽  
The Impact ◽  
Expression And Activity

AbstractThe estrogen receptor (ER) signaling cascade is a vulnerable target of exposure to environmental xenoestrogens, like nonylphenol (NP), which are causally associated with impaired health status. However, the impact of xenoestrogens on the individual receptor isotypes (α, βa, and βb) is not well understood. The goal of these studies was to determine the impact of NP on largemouth bass (Micropterus salmoides) ER isotype expression and activity. Here, we show that hepatic expression levels of three receptors are not equivalent in male largemouth bass exposed to NP by injection. Transcript levels of the ERα subtype were predominantly induced in concert with vitellogenin similarly to fish exposed to 17β-estradiol (E2) as measured by quantitative real-time PCR. NP also induced circulating plasma levels of estrogen, which may contribute to overall activation of the ERs. To measure the activation of each receptor isotype by E2 and NP, we employed reporter assays using an estrogen response element (ERE)–luciferase construct. Results from these studies show that ERα had the greatest activity following exposure to E2 and NP. This activity was inhibited by the antagonists ICI 182 780 and ZM 189 154. Furthermore, both βb and βa subtypes depressed ERα activation, suggesting that the cellular composition of receptor isotypes may contribute to the overall actions of estrogen and estrogenic contaminants via the receptors. Results from these studies collectively reveal the differential response of fish ER isotypes in response to xenoestrogens.

Effect of water temperature on laboratory swimming performance and natural activity levels of adult largemouth bass

2009 ◽  
Vol 87 (7) ◽  
pp. 589-596 ◽  
Author(s):  
Caleb T. Hasler ◽  
Cory D. Suski ◽  
Kyle C. Hanson ◽  
Steven J. Cooke ◽  
David P. Philipp ◽  
...  
Keyword(s):  
Water Temperature ◽  
Largemouth Bass ◽  
Swimming Performance ◽  
Micropterus Salmoides ◽  
Thermal Adaptation ◽  
Field Studies ◽  
Activity Levels ◽  
Natural Setting ◽  
Voluntary Activity ◽  
Natural Activity

Although locomotory performance in vertebrates is related to fitness, most performance tests are conducted in a laboratory setting, or in a manner that forces the organism to move not of their own volition. Biotelemetry offers the possibility to measure voluntary activity in a natural setting and provides the opportunity to combine laboratory-derived data with field studies on wild fish. In this study, it was found that laboratory- and field-based measurements of swimming performance and voluntary activity resulted in similar general seasonal trends, though each measurement assessed a different swimming type. In the field, all swimming metrics were lower at cooler water temperatures and were lowest during early winter (mean daily activity = 0.016 BL/s; mean voluntary swimming activity = 0.04319 BL/s; maximum swimming speed = 0.17 BL/s). In the laboratory, fish acclimatized to 25.0, 14.0, and 7.5 °C decreased swimming performance (Ucrit) with water temperature (25.0 °C (2.17 BL/s); 14.0 °C (1.69 BL/s); 7.5 °C (1.17 BL/s). Although some species and tissues have been shown to exhibit different degrees of thermal adaptation, these results show that swimming, one of the most important functions in fish, is largely dependent on environmental temperature, at least in largemouth bass ( Micropterus salmoides (Lacepède, 1802)).

Density and agonistic behaviour in young-of-the-year largemouth bass (Micropterus salmoides)

1984 ◽  
Vol 62 (8) ◽  
pp. 1454-1455 ◽  
Author(s):  
Ian A. Fleming ◽  
Peter H. Johansen
Keyword(s):  
Largemouth Bass ◽  
Micropterus Salmoides ◽  
Agonistic Behaviour ◽  
Laboratory Studies ◽  
Agonistic Interactions ◽  
Dominance Relations ◽  
Young Of The Year ◽  
Potential Interactions

Laboratory studies were carried out to investigate the influence of density on agonistic behaviour and dominance relations in juvenile largemouth bass (Micropterus salmoides). We report here that high densities result in fewer agonistic interactions and fewer as well as less stable dominance relations. Increased numbers of potential interactions may render the continued maintenance of dominance inefficients.

Morphological and physiological correlates with swimming performance in juvenile largemouth bass

1992 ◽  
Vol 263 (5) ◽  
pp. R1042-R1048 ◽  
Author(s):  
A. S. Kolok
Keyword(s):  
Largemouth Bass ◽  
Swimming Performance ◽  
Micropterus Salmoides ◽  
Step Test ◽  
Late Winter ◽  
Muscle Lactate ◽  
Lactate Dehydrogenase Activity ◽  
Performance Variation ◽  
Heart Mass ◽  
Red Muscle

Winter- and summer-acclimatized largemouth bass (Micropterus salmoides) were collected from hatchery ponds in eastern Colorado during late winter and midsummer, then challenged with two prolonged swimming performances (step test and constant-velocity endurance). Variation in the step test performances was significantly correlated with variation in the endurance performances in the winter-acclimatized but not in the summer-acclimatized fish. Fourteen physiological and morphological traits were measured on each fish, and correlations among these traits and swimming performance were tested. None of the traits measured were correlated with performance variation in both the winter- and summer-acclimatized fish. The only significant correlate with swimming performance in the summer-acclimatized fish was white muscle lactate dehydrogenase activity (n = 19). Six of the seven factors correlating with winter swimming performance (n = 18-19) could be divided into two categories: traits associated with fasting (condition factor and liver enzymatic activity) and those associated with oxygen delivery (heart mass, heart and red muscle cytochrome oxidase activity). The results of this study suggest that morphological and physiological correlates of swimming performance in juvenile largemouth bass are profoundly influenced by seasonal variation.

Pathogeny of disease characterized by swollen liver and spleen in largemouth bass (Micropterus salmoides)

2013 ◽  
Vol 18 (3) ◽  
pp. 654-659 ◽  
Author(s):  
Dongmei MA ◽  
Guocheng DEND ◽  
Junjie BAI ◽  
Shengjie LI ◽  
Xiaoyan JIANG ◽  
...  
Keyword(s):  
Largemouth Bass ◽  
Micropterus Salmoides
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