New Zealand stream crayfish: functional omnivores but trophic predators?

By S. Parkyn, K. Collier, B. Hicks. 2001

187 citations recorded by the source corpus.

View Paper: https://www.semanticscholar.org/paper/c912722b1cd971c24a495a959d6936f1f8fec3fe

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Citations in the corpus

Are autochthonous foods more important than allochthonous resources to benthic consumers in tropical headwater streams? (2009, background): “Parkyn et al. (2001) and Hollows et al. (2002) found that parastacid crayfishes (Paranephrops spp.) appear to function as omnivores by consuming both leaf litter and other invertebrates but are actually predators that obtain most of their energy from invertebrate prey.”
Loss of diversity and degradation of wetlands as a result of introducing exotic crayfish (2005, background): “Given that many of the freshwater decapod species are generalist omnivores (Cronin 1998; Nyström 1999; Parkyn et al. 2001), the effect of introducing them into aquatic systems is not restricted to displacement of the autochthonous ones but also extends to the rest of the trophic chain levels, favour”
Detritus processing, ecosystem engineering and benthic diversity: a test of predator–omnivore interference (2004, background): “By functioning as omnivores, crayfish can occupy a predator’s trophic position to consume small invertebrates (Parkyn et al. 2001).”
Exotic crayfish in a brown water stream: effects on juvenile trout, invertebrates and algae (2003, background): “Community responses to omnivorous crayfish Stomach content analysis indicated a high degree of omnivory in signal crayfish, as found in earlier studies of stream-dwelling crayfish (e.g. Whitledge & Rabeni, 1997; Guan & Wiles, 1998; Parkyn et al., 2001).”
Red swamp crayfish: biology, ecology and invasion - an overview (2015, unknown): “2) (Huner and Barr, 1991; Ilhéu and Bernardo, 1993; 1995; Gutiérrez-Yurrita et al., 1998; 1999; Parkyn et al., 2001; Correia, 2002; Buck et al., 2003; Cruz and Rebelo, 2005).”
Food choice by the introduced crayfi sh Procambarus clarkii (2003, background): “Resource partitioning among conspecifi cs may lead to trophic selection (Parkyn et al. 2001).”
Foodweb structure in a tropical Asian forest stream (2004, background): “…a snapshot of the diet at a particular time and, more importantly, not everything present in the gut is equally assimilated (e.g., Whitledge and 1 E-mail addresses: sukhkaur@graduate.hku.hk 2 mariasalas71@hotmail.com 3 ddudgeon@hkucc.hku.hk Rabeni 1997, Parkyn et al. 2001, Hollows et al. 2002).”
Ecological roles of crayfish in freshwater and terrestrial habitats (2013, background): “Noble: Astacus astacus Pârvulescu et al. (2011) Vulnerable Edsman et al.”
Gut content and stable isotope analyses provide complementary understanding of ontogenetic dietary shifts and trophic relationships among fishes in a tropical river (2012, methodology): “combination of SIA and SCA is increasingly being used to improve interpretation of feeding studies and aquatic food webs (Parkyn et al., 2001; Mantel, Salas & Dudgeon, 2004; Layman et al., 2005a).”
Food Web Structure and Basal Resource Utilization along a Tropical Island Stream Continuum, Puerto Rico1 (2003, methodology): “Recent studies have emphasized the importance of understanding both the functional and trophic role of stream consumers (Mihuc 1997, Whitledge & Rabeni 1997, Parkyn et al. 2001).”
Winning the biodiversity arms race among freshwater gastropods: competition and coexistence through shell variability and predator avoidance (2010, background): “As discussed above, crayfish as gastropod predators are well documented and are generally known to have omnivorous diets both in their native and non-native ranges (Covich, 1977; Lodge et al., 1994; Nyström et al., 1996; Parkyn et al., 2001; McCarthy et al., 2006; Johnson et al., 2009).”
Trophic relationships in a tropical stream food web assessed by stable isotope analysis (2009, background): “They exert a predation pressure on both the adjacent and lower levels (palaemonid shrimps) and appear as important processors of organic matter (mostly atyid and xiphocaridid shrimps) (March et al., 2001; Parkyn et al., 2001).”