Pheromone trail following in three dimensions by the freshwater copepod Hesperodiaptomus shoshone

Yen, Jeannette; Sehn, Jennifer K.; Catton, Kimberly B.; Kramer, Andrew M.; Sarnelle, Orlando

doi:10.1093/plankt/fbq164

Cited by 23 publications

(24 citation statements)

References 26 publications

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“…Earlier studies on freshwater copepods did not find evidence of pheromone trails (Watras 1983;van Leeuwen and Maly 1991;Nihongi et al 2004), but recent observations by our group demonstrate that H. shoshone males use pheromone trails to locate females (J. Yen et al 2011). Theory indicates that pheromone production, and trail-following in particular, should be more likely in larger species (Dusenberry and Snell 1995;Kiørboe and Bagøien 2005), such as H. shoshone.…”

mentioning

confidence: 55%

“…These were a random sample from a population with adult male length 5 2.49 6 0.13 mm and adult female length 5 2.63 6 0. Yen et al 2011).…”

Section: Methodsmentioning

confidence: 99%

“…Previous observations have indicated that males preferentially pursue females (J. Yen et al 2011). We digitized several seconds of swimming at 1/30-s intervals prior to each attempted mating for which both animals were visible in both the x-z and y-z views.…”

Section: Methodsmentioning

confidence: 99%

“…na, events observed during several trials of 2-4 h (J. Yen et al 2011 (Kramer 2007). Uncertainty in b and N C was estimated from nonparametric bootstraps performed with package 'boot' in R (Canty and Ripley 2010) (Davison and Hinkley 1997).…”

Section: Methodsmentioning

confidence: 99%

“…Various adaptations to increase encounter rate, including swarming (Ambler et al 1996), pheromone clouds (Nihongi et al 2004;, and pheromone trails (Tsuda and Miller 1998;Yen et al 1998;Bagøien and Kiørboe 2005), have been identified in copepods. Earlier studies on freshwater copepods did not find evidence of pheromone trails (Watras 1983;van Leeuwen and Maly 1991;Nihongi et al 2004), but recent observations by our group demonstrate that H. shoshone males use pheromone trails to locate females (J.…”

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confidence: 99%

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The effect of mating behavior and temperature variation on the critical population density of a freshwater copepod

Kramer

Sarnelle

Yen

2011

Limnology & Oceanography

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At low density, population growth rates of dioecious zooplankton depend on the encounter rate of potential mates, resulting in a demographic Allee effect and a critical density for population establishment and persistence. Empirical evidence confirms a critical density for the calanoid copepod Hesperodiatomus shoshone, but existing estimates of the critical density span an order of magnitude. Combining three-dimensional video analysis of mating behavior with life history data from natural populations we estimated H. shoshone critical density to be 0.44-1.44 m 23 . The critical density was highly dependent on body size, primarily as a result of the latter's influence on swimming speed. Swimming speed also depended on temperature, increasing . 25% as temperature increased from 5uC to 16uC. Rapid swimming (1.25-2.4 cm s 21 ) and the ability to follow pheromone trails greatly improved the ability of H. shoshone to find mates. The large effect of temperature on mating behavior means that environmental variation can have a major effect on critical density and indicates that recovery or colonization events may be more likely to succeed in warmer lakes and/or warmer years. Considering the potential for critical densities to vary with environmental conditions is important for understanding how these thresholds determine population establishment and persistence in sexually reproducing aquatic organisms and other populations subject to Allee effects.

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mentioning

confidence: 55%

“…These were a random sample from a population with adult male length 5 2.49 6 0.13 mm and adult female length 5 2.63 6 0. Yen et al 2011).…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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The effect of mating behavior and temperature variation on the critical population density of a freshwater copepod

Kramer

Sarnelle

Yen

2011

Limnology & Oceanography

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The response of a freshwater copepod to small‐scale, dissipative eddies in turbulence

Ruszczyk

Webster

Yen

2023

Limnology & Oceanography

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The freshwater copepod Hesperodiaptomus shoshone was exposed to a Burgers vortex, a flow feature meant to mimic small‐scale, dissipative turbulent eddies found in the organism's environment, to determine how this copepod responds to microscale turbulent flow structures. Male and female H. shoshone were separately exposed to four turbulence intensity levels plus a negative control (i.e., stagnant flow) in two vortex orientations relative to gravity. H. shoshone demonstrates a mild behavioral change in the presence of a Burgers vortex that is dependent on both sex and vortex orientation. H. shoshone swim with fairly linear trajectories across all four levels of turbulence intensity, which is a notable difference from the swimming behavior of marine copepods exposed to the same flow feature. Variations in morphology, physical environment, or ecological niche between H. shoshone and marine copepods are potential factors that may explain the differences in how the species respond to a Burgers vortex. The setal array of H. shoshone differs from the setal array of the previously studied marine copepods, suggesting differences in sensory ability and response. The small pond habitat of H. shoshone is rarely or intermittently mixed, creating a different hydrodynamic landscape compared to the ocean, which may influence the copepod/turbulence interaction. H. shoshone has few, if any, naturally occurring predators whereas marine copepods have many, which may influence the difference in response to microscale turbulence.

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Bioinspired Sensory Systems for Shear Flow Detection

2017

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Pheromone trail following in three dimensions by the freshwater copepod Hesperodiaptomus shoshone

Cited by 23 publications

References 26 publications

The effect of mating behavior and temperature variation on the critical population density of a freshwater copepod

The effect of mating behavior and temperature variation on the critical population density of a freshwater copepod

The response of a freshwater copepod to small‐scale, dissipative eddies in turbulence

Bioinspired Sensory Systems for Shear Flow Detection

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