Reproductive success of nesting male longear sunfish (Lepomis megalotis peltastes)

1988 ◽  
Vol 23 (2) ◽  
pp. 109-116 ◽  
Author(s):  
H. M. C. Dupuis ◽  
M. H. A. Keenleyside
Keyword(s):  
Reproductive Success ◽  
Lepomis Megalotis ◽  
Longear Sunfish

scholarly journals River Otter, Lontra canadensis, Food Habits in the Missouri Ozarks

2008 ◽  
Vol 122 (4) ◽  
pp. 303 ◽  
Author(s):  
Nathan M. Roberts ◽  
Charles F. Rabeni ◽  
John S. Stanovick ◽  
David A. Hamilton
Keyword(s):  
Smallmouth Bass ◽  
Lontra Canadensis ◽  
Micropterus Dolomieu ◽  
Widespread Occurrence ◽  
River Otters ◽  
Lepomis Megalotis ◽  
Rock Bass ◽  
Longear Sunfish ◽  
The Mean ◽  
Ambloplites Rupestris

The reintroduction of River Otters (Lontra canadensis) between 1982 and 1992 resulted in widespread occurrence of the species throughout the Missouri Ozarks. This study examined otter diets from the vicinity of two Ozark streams in relation to seasonal and spatial trends. Otter scats (N = 4750) were collected and analyzed from the Osage Fork River and Big Piney River during the summer and winter seasons of 2001 and 2002. During the winter (January-March), fish occurred in 86% of the samples. During the summer (June–August), occurrence of fish dropped to approximately 15% for both rivers. Seven families of fish were identified in the diets, with Centrarchidae being most common regardless of river or season. Within the Centrarchidae, the genus Lepomis (mostly Longear Sunfish, Lepomis megalotis) was most common, with Micropterus (mostly Smallmouth Bass, Micropterus dolomieu) and Rock Bass (Ambloplites rupestris) also well represented. The mean age of Ambloplites consumed (mean = 3.3 years) was consistently older than that of either Micropterus (mean = 2.54 years) or Lepomis (mean = 2.78 years). Crayfish were recovered from a mean of 85.2% of scats in the winter and 99% in the summer. Smaller fish and crayfish were more common from the upper reaches of the streams while larger fish were prevalent in the lower reaches.

Resource Partitioning in Two Coexisting Sunfish: Pumpkinseed (Lepomis gibbosus) and Northern Longear Sunfish (Lepomis megalotis peltastes)

1980 ◽  
Vol 37 (9) ◽  
pp. 1411-1420 ◽  
Author(s):  
Dennis R. Laughlin ◽  
Earl E. Werner
Keyword(s):  
Habitat Use ◽  
Vegetation Cover ◽  
Plant Cover ◽  
Lepomis Gibbosus ◽  
Sediment Type ◽  
Vegetation Density ◽  
Sympatric Populations ◽  
Sparse Vegetation ◽  
Lepomis Megalotis ◽  
Longear Sunfish

Qualitative surveys of 22 lakes in southern Michigan indicated that relative abundances of the northern longear sunfish (Lepomis megalotis peltastes) and pumpkinseed (L. gibbosus) depended upon amount of plant cover and sediment type. The longear sunfish occurred only in lakes with marl sediments and regions of sparse vegetation cover. The pumpkinseed occurred in all lakes surveyed and increased in abundance in lakes with greater vegetation density and/or more organic sediments. Quantitative measurements of habitat and food use were made in five lakes with sympatric populations. Data from underwater transects indicated that large (> 75 mm standard length) longear sunfish occurred primarily in shallow regions containing moderate to low vegetation cover whereas large pumpkinseeds were concentrated in deeper areas with heavy vegetation cover. The smaller size-classes of both species occupied the vegetation in deeper areas of the littoral zone. Large longears consumed predominantly large, sediment-dwelling mayfly or odonate nymphs regardless of the lake or habitat types. Pumpkinseeds consumed mainly gastropods and other prey from the vegetation. Preliminary studies of seasonal food use indicated that the pumpkinseed and longear sunfish both consumed more food in the spring and exhibited greater overlap in diet during this period. The relationship between foraging behaviors of these two species and the types of prey consumed is discussed as well as the complications of assessing competition between species when food and habitat use are dependent on size.Key words: Habitat use, size-class, lake types, food overlap, competition, Lepomis, Michigan

“Ghost Sightings” Made by Ichthyologists Past: Longear Sunfish, Lepomis megalotis, in North Carolina

2020 ◽  
Vol 19 (2) ◽  
pp. 297
Author(s):  
Bryn H. Tracy ◽  
Fred C. Rohde ◽  
Gabriela M. Hogue
Keyword(s):  
North Carolina ◽  
Lepomis Megalotis ◽  
Longear Sunfish

Lepomis megalotis, the Longear Sunfish, in Western Ontario

1966 ◽  
Vol 23 (9) ◽  
pp. 1457-1459
Author(s):  
C. G. Gruchy ◽  
W. B. Scott
Keyword(s):  
Lepomis Megalotis ◽  
Longear Sunfish

not available

scholarly journals Reproductive Disruption in Wild Longear Sunfish (Lepomis megalotis) Exposed to Kraft Mill Effluent

2006 ◽  
Vol 114 (1) ◽  
pp. 40-45 ◽  
Author(s):  
Jennifer A. Fentress ◽  
Stacy L. Steele ◽  
Henry L. Bart ◽  
Ann Oliver Cheek
Keyword(s):  
Lepomis Megalotis ◽  
Longear Sunfish ◽  
Kraft Mill Effluent ◽  
Kraft Mill ◽  
Reproductive Disruption

Spawning and Behavior of the Longear Sunfish, Lepomis megalotis megalotis

Copeia ◽  
1954 ◽  
Vol 1954 (3) ◽  
pp. 188 ◽  
Author(s):  
Arthur Witt ◽  
Richard C. Marzolf
Keyword(s):  
Lepomis Megalotis ◽  
Longear Sunfish ◽  
And Behavior

Genetic variation in the longear sunfish (Lepomis megalotis)

1992 ◽  
Vol 70 (9) ◽  
pp. 1673-1680 ◽  
Author(s):  
Martin J. Jennings ◽  
David P. Philipp
Keyword(s):  
Genetic Variation ◽  
Principal Component ◽  
Distinct Group ◽  
Protein Electrophoresis ◽  
Distinct Form ◽  
Separate Species ◽  
Ozark Highlands ◽  
Lepomis Megalotis ◽  
Longear Sunfish ◽  
Distribution Limits

The systematics and zoogeography of the longear sunfish (Lepomis megalotis) are poorly understood. Relationships among geographic variants throughout the range of the species are unclear, and it is uncertain whether the northern longear sunfish, L. m. peltastes, should be classified as a separate species. We used protein electrophoresis to examine genetic variation among 22 longear sunfish populations and one dollar sunfish (Lepomis marginatus) population. Principal component analysis of allele frequency data could not separate the most morphologically distinct form, the northern longear sunfish, from the central long-ear sunfish, L. m. megalotis. Populations distributed from the Missouri River basin to the Colorado River in Texas, for which the subspecific names L. m. breviceps and L. m. aquilensis are available, clustered as a distinct group. No evidence was found to suggest that a distinct form exists in the Ozark Highlands. Lepomis marginatus was genetically distinct from all L. megalotis populations, but most distinct from L. m. megalotis and L. m. peltastes. Protein electrophoresis should allow diagnosis of distribution limits and intergrade zones of southwestern forms, but a more sensitive technique is required to separate L. m. megalotis and L. m. peltastes.

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