Paddlefish (Polyodon spathula): Growth and Food of Young of the Year and a Suggested Technique for Measuring Length

Ruelle, Richard; Hudson, Patrick L.

doi:10.1577/1548-8659(1977)106<609:pps>2.0.co;2

Cited by 61 publications

(42 citation statements)

References 6 publications

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“…For example, the ontogenetic switch from particulate feeding to suspension feeding that occurs in many planktivorous species may involve no change or a decrease in the average size of prey (Jansen 1976, Ruelle & Hudson 1977, Rosen & Hales 1981, Drenner et al . 1982, Mummert & Drenner 1986) .…”

Section: Body Sizementioning

confidence: 99%

Predicting patterns of prey use from morphology of fishes

1995

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SynopsisEcomorphological analyses that search for patterns of association between morphological and prey-use data sets will have a greater chance of understanding the causal relationships between form and diet if the morphological variables used have known consequences for feeding performance. We explore the utility offish body size, mouth gape and jaw-lever mechanics in predicting patterns of prey use in two very different communities of fishes, Caribbean coral reef fishes, and species of the Centrarchidae that live in Lake Opinicon, Ontario. In spite of major differences in the spectrum of potential prey available, the centrarchids of Lake Opinicon show dietary transitions during ontogeny that are very similar to those seen among and within species of Caribbean groupers (Serranidae ). The transition from small zooplankton to intermediate sized invertebrates and ultimately to fishes appears to be very general in ram-suction feeding fishes and is probably driven largely by the constraints of mouth size on prey capture ability. The jaw-lever systems for mouth opening and closing represent direct trade-offs for speed and force of jaw movement. The ratio of in-lever to out-lever in the opening system changes during ontogeny in bluegill, indicating that the mechanics and kinematics of jaw movement may change as well. Among 34 species of Caribbean reef fishes, biting species had jaw-closing ratios that favored force translation, while species that employ rapid-strike ram-suction had closing ratios that enhanced speed of closing and mouth opening ratios that favored a more rapid expansion of the mouth during the strike. We suggest that when prey are categorized into functional groups, reflecting the specific performance features that are important in capturing and handling them, and the differences among habitats in the available prey resource are taken into account, general patterns can be found in morphology-diet relations that cross phylogenetic boundaries.

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Section: Body Sizementioning

confidence: 99%

Predicting patterns of prey use from morphology of fishes

1995

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“…Defined as a loose aggregative behavior, shoaling can be viewed as the forerunner to all vertebrate social groups; shoaling is engaged in by the majority of fishes as well as amphibian larvae, representing a broad swath of vertebrate diversity (3)(4)(5)(6)(7)(8)(9). Although shoaling provides benefits to individuals via enhanced predator avoidance and foraging efficiency, individuals constantly assess the costs and benefits of joining or remaining in a shoal relative to acting alone (2,5,10).…”

mentioning

confidence: 99%

Sex-specific perceptual spaces for a vertebrate basal social aggregative behavior

Engeszer

Wang

Ryan

et al. 2008

Proc. Natl. Acad. Sci. U.S.A.

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Loose aggregations of fishes, or shoals, are a basal social organization of vertebrates and offer a valuable opportunity to determine how individual perceptions influence group formation. We used zebrafish, Danio rerio, to comprehensively investigate the preference space for shoaling related to adult pigment pattern variation, presented in the form of 17 zebrafish pigment pattern mutants or closely related species. We examined all combinations of these phenotypes in 2,920 initial and replicated preference tests, and used as subjects both domesticated laboratory stocks and wild-caught fish. By using multidimensional scaling and other approaches, we show that laboratory and wild zebrafish exhibit similar preferences, yet, unexpectedly, these preferences differ markedly between sexes, and also from how human observers perceive the same pigment patterns. Whereas zebrafish males respond to two traits (species and stripe patterning) in deciding whether to join a shoal, zebrafish female preferences do not correlate with a priori identifiable traits, and neither perceptual world is correlated with that of human observers. The observed zebrafish sex differences run counter to the most commonly accepted explanations for the individual selective advantages gained by shoaling. More generally, these data describe very different perceptual worlds between sexes and reveal the importance of sex differences in social group formation, as well as the critical importance of defining species specificity in visual signaling.perception ͉ pigment pattern ͉ shoaling ͉ social behavior ͉ zebrafish

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“…Upon contact with nets, fish were removed and brought on board the boat where length (eye-to-fork length (EFL); Ruelle and Hudson 1977) and weight were recorded, and sex noted during surgical implantation of transmitters (Ross and Kleiner 1982). We implanted radio transmitters into 69 adult paddlefish over the period April 1999 to September 2000: 25 during the spring (April 29-30) of 1999, 22 during the fall (September 30-October 5) of 1999, and 22 during the fall (September 27-28) of 2000.…”

Section: Field Proceduresmentioning

confidence: 99%

The Influence of Discharge on Duration, Ascent Distance, and Fidelity of the Spawning Migration for Paddlefish of the Yellowstone-Sakakawea Stock, Montana and North Dakota, USA

Firehammer

Scarnecchia

2006

Environ Biol Fish

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Paddlefish, Polyodon spathula, of the Yellowstone-Sakakawea stock, Missouri and Yellowstone Rivers, Montana and North Dakota, were radio-tagged to assess the influence of spring discharge on duration of river residency, ascent distance, and site-fidelity during spawning migrations of 1999-2002. Contrary to expectations and reported results from other paddlefish populations, fish remained in the river for similar periods of time and ascended to similar reaches in years of higher, more sustained discharge and in years of lower, more fluctuating discharge. In all years, 65 of the 74 migrants (88%) restricted their ascent to reaches below Yellowstone River kilometer (YRkm) 55; only six migrants were found to further ascend to upriver reaches within 20 river kilometers (rkm) of the Intake Diversion Dam (YRkm 114). The lack of detectable annual differences in ascent distance over the study period despite annual differences in Yellowstone River spring flow regimes may have been partially attributed to the apparent site-fidelity demonstrated by the tagged fish over the study period. Ten of the 22 paddlefish contacted in more than one spring migration repeatedly limited their upriver movement to sites that were within 10 rkm of each other. In addition, similar to the reproductive homing tendencies documented in other large-river migratory fishes, site-fidelity occurred in different reaches of the river system. Results from this study suggest that, in years of moderate discharge, site-fidelity may be as influential as the spring flow regime in determining the reaches to which migratory paddlefish ascend. Further research is needed to investigate potential differential spawning success in fish that return to different reaches of the lower Yellowstone River.

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Paddlefish (Polyodon spathula): Growth and Food of Young of the Year and a Suggested Technique for Measuring Length

Cited by 61 publications

References 6 publications

Predicting patterns of prey use from morphology of fishes

Predicting patterns of prey use from morphology of fishes

Sex-specific perceptual spaces for a vertebrate basal social aggregative behavior

The Influence of Discharge on Duration, Ascent Distance, and Fidelity of the Spawning Migration for Paddlefish of the Yellowstone-Sakakawea Stock, Montana and North Dakota, USA

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