Effects of artificial submersed vegetation on consumption and growth of mandarin fish <i>Siniperca chuatsi</i> (Basilewsky) foraging on live prey

Ren, Yan; Xiong, Mantang; Yu, Jixin; Li, Wei; Li, Bo; Liu, Jiashou; Zhang, Tanglin

doi:10.1080/02705060.2018.1561530

Cited by 11 publications

(8 citation statements)

References 51 publications

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“…In addition, space utilization was different, even though we used similar coverage and materials in the tanks. Vegetation coverage influenced the SGR of mandarin fish, a widely distributed fish species with a similar ecological niche to LB [39]. As an aquaculture species occupying an important position, the growth of LB had been well studied when fed with compound and fresh frozen feeds.…”

Section: Discussionmentioning

confidence: 99%

Predator-Prey Interactions between Nonnative Juvenile Largemouth Bass (Micropterus salmoides) and Local Candidate Prey Species in the Pearl River Delta: Predation Capacity, Preference and Growth Performance

Luo

Yang

2022

Life

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An ontogenetic dietary shift is crucial for the survival and growth of piscivorous largemouth bass (LB). However, there is much to learn about the predator-prey interaction during the switching process. We carried out a series of indoor experiments to examine the predation capacity, predation preference, and growth performance of exotic juvenile LB feeding on candidate prey species in the Pearl River Delta. The widely distributed oriental river prawn (Macrobranchium nipponense), barcheek goby (Ctenogobius giurinus), western mosquitofish (Gambusia affinis), silver carp (Hypophthalmichthys molitrix), and mud carp (Cirrhinus molitorella), with relatively similar total lengths, were selected as potential prey based on their availability and habitat use. Our results show that predation capacity and preference varied quantitatively and qualitatively among prey species. The number of oriental river prawns killed was significantly less than that of fish species, comparing the 1st hour with the 24th hour (p < 0.01). The feeding rhythm of LB varied significantly from crayfish to fish. Numerically, Jacobs’ selection index reinforced LB’s special preference for predating G. affinis. Although there were obvious variations in predation capacity and feed selection, no statistically significant growth differences were detected among LB groups feeding on live M. nipponense, G. affinis, H. molitrix, and C. molitorella (p < 0.05). These findings suggest that the successful ontogenetic dietary shift of juvenile LB may depend on the availability and vulnerability of local fish species. Further study on the reproductive phenology of potential fish prey may help to predict LB’s establishment.

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Section: Discussionmentioning

confidence: 99%

Predator-Prey Interactions between Nonnative Juvenile Largemouth Bass (Micropterus salmoides) and Local Candidate Prey Species in the Pearl River Delta: Predation Capacity, Preference and Growth Performance

Luo

Yang

2022

Life

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“…Additionally, hydrophytic vegetation provides refuge and congregation sites for fish (Romare and Hansson 2003;Sohel and Lindstrom 2015). Predatory fishes frequent hydrophytic vegetation in search of prey (O’Hara 2012;Ren et al 2019). Therefore, the presence of such vegetation might be an important cue for hunting in both deeper and shallow waters.…”

Section: Discussionmentioning

confidence: 99%

How Fishing CatsPrionailurus viverrinusfish: Describing a felid’s strategy to hunt aquatic prey

Ganguly

Adhya

2020

Preprint

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Hunting strategies are key to carnivore survival (Krebs and Davies 2009;Kamil et al. 38 2012;Michalko and Pekar 2016). Fishing Cat's (Prionailurus viverrinus) persistence in the 39 'semi-aquatic niche ' (Kitchener et al. 2010) despite felids being terrestrial carnivores in general 40 (>95%) (Hunter 2019) suggests the evolution of a successful hunting strategy. Its morphological 41 adaptations further suggest selection for hunting in wetlands. What energy conserving strategies 42 did the Fishing Cat borrow from its family and how were these adapted to optimize energy 43 gained from hunting fish, its primary prey? We attempt to answer this by analyzing 197 video 44 footages collected opportunistically from a participatory science initiative conducted over 2.5 45 years. We found that the felid switches between stationary and active modes of searching for 46 prey depending on the depth of water and the corresponding loss of body heat/energy. For 47 example, diving in deeper waters requires the submergence of the upper portions of the body and 48 loss of more body heat/energy. Our analysis shows that the cat spent much of its time (~52%) 49 sitting and waiting for prey (fish) to come nearer and then took limited attempts to dive into 50 deeper water (2.78%). We suggest that this is a strategy to optimize the net energy gain. In 51 shallow waters where the cat could forage without submerging the upper body it adopted a 52 predominantly active mode of hunting (~96%) to flush out prey. Thus, prominent hunting 53 strategies in the small cat lineage like 'sit-and-wait' and 'active foraging' is adapted to hunt in 54 the water. We recorded a 60% hunting success in deeper waters but did not detect a successful 55 hunt in shallow waters due to the low sample size of data from shallow water hunting. The major 56 caveat in our study is the post-hoc analysis of opportunistically collected data as opposed to data 57 derived from a structured design with predefined objectives. With more sampling from various 58 seasons and landscapes, finer details can be explored which would have conservation 59 implications. For example, we would expect variations in 'attempts to hunt' during cold and 60 warm seasons because heat loss might be less of a challenge in the latter. Quantifying 'attempts 61 to hunt' and 'successful hunts' across seasons could help focus management interventions to 62 minimize negative interactions between fish cultivators and Fishing Cat. The strictly nocturnal 63 activity of fishing cat as demonstrated in our study could be a strategy taken by the cat to avoid 64 humans. Our approach of using participatory-science is relevant for conducting research on 65 mammal behavior in human dominated landscapes. 66 67

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“…In general, habitat structures offer concealment and camouflage to predators, thereby facilitating them in ambushing prey (Persson and Ekl€ ov 1995;Spitzer et al 2000;Ostrand et al 2004) better than they would in open areas. Therefore, this ambush strategy allows predators to capture more prey and grow better in complex habitats (Flynn and Ritz 1999;Orrock et al 2013;Ren et al 2019). These facts contribute to a better understanding of dark sleepers who may conceal their predatory intent and capture more prey via ambushing them in complex habitat structures.…”

Section: Effect Of Temperature and Habitatmentioning

confidence: 99%

Influence of water temperature, habitat complexity and light on the predatory performance of the dark sleeperOdontobutis potamophila(Günther, 1861)

Ren

Liu

et al. 2020

Journal of Freshwater Ecology

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Recently, the dark sleeper [Odontobutis potamophila (G€ unther, 1861)] was selected as a potential aquaculture target. However, the feeding behavior of this species remains unclear. In this study, we investigated the influence of water temperature, habitat type, light intensity and photoperiod on the predatory performance of dark sleepers against juvenile demersal mrigal carp [Cirrhinus mrigala (Hamilton, 1822)] in the laboratory. Our results showed that both the prey consumption and the feeding rate of dark sleepers increased significantly with increases in water temperature (22-34 C) and stabilized between 26-34 C. Additionally, both the prey consumption and the feeding rate were higher in vegetated habitats than those in open areas at 22-30 C, although no significant differences were detected. The prey consumption and the feeding rate of dark sleepers increased significantly with decreased light intensity (0-1350 lx) and shortened light duration (0-14 h), indicating that this fish prefers feeding in dark environments. These results will help elucidate the influence of environmental variables on this species' predatory performance and create suitable protocols for its culture.

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Effects of artificial submersed vegetation on consumption and growth of mandarin fish Siniperca chuatsi (Basilewsky) foraging on live prey

Cited by 11 publications

References 51 publications

Predator-Prey Interactions between Nonnative Juvenile Largemouth Bass (Micropterus salmoides) and Local Candidate Prey Species in the Pearl River Delta: Predation Capacity, Preference and Growth Performance

Predator-Prey Interactions between Nonnative Juvenile Largemouth Bass (Micropterus salmoides) and Local Candidate Prey Species in the Pearl River Delta: Predation Capacity, Preference and Growth Performance

How Fishing CatsPrionailurus viverrinusfish: Describing a felid’s strategy to hunt aquatic prey

Influence of water temperature, habitat complexity and light on the predatory performance of the dark sleeperOdontobutis potamophila(Günther, 1861)

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