scholarly journals Sexually dimorphic swim bladder extensions enhance the auditory sensitivity of female plainfin midshipman fish, Porichthys notatus

2019 ◽  
Vol 222 (14) ◽  
pp. jeb204552 ◽  
Author(s):  
Orphal Colleye ◽  
Brooke J. Vetter ◽  
Robert A. Mohr ◽  
Lane H. Seeley ◽  
Joseph A. Sisneros
2017 ◽  
Vol 278 (11) ◽  
pp. 1458-1468 ◽  
Author(s):  
Robert A. Mohr ◽  
Elizabeth A. Whitchurch ◽  
Ryan D. Anderson ◽  
Paul M. Forlano ◽  
Richard R. Fay ◽  
...  

2020 ◽  
Vol 223 (14) ◽  
pp. jeb225177
Author(s):  
Brooke J. Vetter ◽  
Joseph A. Sisneros

ABSTRACTThe plainfin midshipman fish (Porichthys notatus) is an established model for investigating acoustic communication because the reproductive success of this species is dependent on the production and reception of social acoustic signals. Previous work showed that female midshipman have swim bladders with rostral horn-like extensions that project close to the saccule and lagena, while nesting (type I) males lack such rostral swim bladder extensions. The relative close proximity of the swim bladder to the lagena should increase auditory sensitivity to sound pressure and higher frequencies. Here, we test the hypothesis that the swim bladder of female midshipman enhances lagenar sensitivity to sound pressure and higher frequencies. Evoked potentials were recorded from auditory hair cell receptors in the lagena in reproductive females with intact (control condition) and removed (treated condition) swim bladders while pure tone stimuli (85–1005 Hz) were presented by an underwater speaker. Females with intact swim bladders had auditory thresholds 3–6 dB lower than females without swim bladders over a range of frequencies from 85 to 405 Hz. At frequencies from 545 to 1005 Hz, only females with intact swim bladders had measurable auditory thresholds (150–153 dB re. 1 µPa). The higher percentage of evoked lagenar potentials recorded in control females at frequencies >505 Hz indicates that the swim bladder extends the bandwidth of detectable frequencies. These findings reveal that the swim bladders in female midshipman can enhance lagenar sensitivity to sound pressure and higher frequencies, which may be important for the detection of behaviorally relevant social signals.


2003 ◽  
Vol 117 (4) ◽  
pp. 601 ◽  
Author(s):  
Kyle Hamish Elliott ◽  
Christina L. Struik ◽  
John E. Elliott

We observed Bald Eagles feeding on Plainfin Midshipman near Crescent Beach, British Columbia, in May and June 2001 and 2002. We quantified consumption rates and eagle numbers during this period, illustrating the potential importance of this food source to breeding eagles. Tide height was the only significant factor influencing consumption rates, likely because this variable reflected the availability of midshipman prey.Nous avons observé les Pygargues à tête blanche alimenter sur les Crapauds à nageoire unie près de Crescent Beach, Colombie-Britannique, en maie et juin 2001 et 2002. Nous avons mesuré les cadences de consommation et les nombres de pygargues pendant cette période, illustrant l’importance potentielle de cette source de nourriture pour les aigles. La taille de marée était le seul facteur significatif influençant les cadences de consommation et les nombres de pygargues pendant la période d’étude, probablement parce que cette variable a reflété la disponibilité des crapauds.


2015 ◽  
Vol 86 (4) ◽  
pp. 1396-1415 ◽  
Author(s):  
K. M. Cogliati ◽  
C. Danukarjanto ◽  
A. C. Pereira ◽  
M. J. Lau ◽  
A. Hassan ◽  
...  

2008 ◽  
Vol 124 (4) ◽  
pp. 2549-2549
Author(s):  
David Zeddies ◽  
Richard Fay ◽  
Peter Alderks ◽  
Kiel Shaub ◽  
Joseph Sisneros

1999 ◽  
Vol 35 (1) ◽  
pp. 81-89 ◽  
Author(s):  
Rosemary Knapp ◽  
John C. Wingfield ◽  
Andrew H. Bass

2010 ◽  
Vol 127 (3) ◽  
pp. 1886-1886 ◽  
Author(s):  
David G. Zeddies ◽  
Richard R. Fay ◽  
Peter W. Alderks ◽  
Andrew Acob ◽  
Joseph A. Sisneros

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