Utilization of grass carp faeces by the IsopodAsellus aquaticus (L.) in the laboratory

Petridis, D.

doi:10.1007/bf00012111

Cited by 7 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The importance of parental faeces in the nutrition of A. aquaticus juveniles has already been determined in the laboratory (Rossi & Vitagliano-Tadini, 1978). Both immature stages and adults utilized efficiently also grass carp faecal pellets derived from Elodea nutallii consumption (Petridis, 1990). P. coxalis s.l.…”

Section: Discussionmentioning

confidence: 99%

“…P. coxalis s.l. and A. aquaticus feed on fresh and decaying plant material (Moore, 1975;Petridis, 1990), yet microbial conditioning has been proven to be a factor of primary importance in their nutrition (Marcus et al, 1978). Faeces are foci of microbial activity mainly due to considerable increase in the substrate surface compared to the food ingested.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Untitled

Costantini¹,

Rossi²

1998

Hydrobiologia

View full text Add to dashboard Cite

The role of adult faeces in juvenile nutrition of two isopod species, Proasellus coxalis s.l. and Asellus aquaticus (L.), with similar trophic strategies and different reproductive output, has been studied in laboratory. Our aim was to consider the possible competitive mechanisms occurring at the beginning of the species coexistence using allopatric populations in single and mixed species experiments. Two series of competition experiments were performed. In the first, adult specimens were used for breeding and feeding trials. Both population dynamics and the percentage of ovigerous females and juveniles were evaluated during 10 months. Adult densities and juvenile percentage of A.aquaticus were lower in the presence of P. coxalis s.l. than when alone. At the end of the breeding experiments the dietary preferences of adults on a set of fungally conditioned leaf discs were not different among treatments. In the second series of experiments, the influence of coexistence on the feeding rates of young asellids and the relative importance of faeces and decaying plant material in their diet were investigated. Individual consumption by wild juveniles in multiple-choice laboratory experiments was measured by radioisotopes ( 32 P). Juveniles of P. coxalis s.l. showed the highest ingestion rates. In co-occurrence, contrary to A.aquaticus, they were able to further increase feeding on parental faeces. The role of parental faeces in the diet of the two species juveniles and the competitive dominance of P. coxalis s.l. are discussed.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Untitled

Costantini¹,

Rossi²

1998

Hydrobiologia

View full text Add to dashboard Cite

show abstract

“…Aquaculture ponds in Turkey stocked with grass carp had higher benthic fauna abundance than ponds without grass carp [69]. Grass carp feces can also provide a food source for some non-fish aquatic species, such as benthic invertebrates [108]. When grass carp are inoculated with larval A. cygnea in an experimental setting, the mean number of excysted juvenile A. cygnea larva per individual grass carp is 9.1 [103].…”

Section: Effects On Fish and Other Animalsmentioning

confidence: 99%

A Review of Grass Carp and Related Species Literature on Diet, Behavior, Toxicology, and Physiology Focused on Informing Development of Controls for Invasive Grass Carp Populations in North America

Wildhaber,

West,

Ditter

et al. 2023

Fishes

View full text Add to dashboard Cite

Grass carp (Ctenopharyngodon idella) are globally important in aquaculture and aquatic vegetation control. However, escaped grass carp have established invasive populations. A targeted keyword search was performed on a carp (order: Cypriniformes) literature database maintained by the U.S. Geological Survey to identify literature relevant to grass carp. Additional sources cited in reviewed documents and provided by numerous reviewers were also included. There were three focus areas designed to provide support for invasive grass carp management: (1) diet and behavior; (2) physiological constraints, toxicity, and biology; and (3) gut physiology. Each focus area provides information to guide development of potential pathways for invasive grass carp control. Information from other carp species was used to fill in gaps where grass carp information was lacking and provide additional, potential research directions. Diet-related information included food selection and aquacultural diet formulations. Behavioral information included stimuli and non-physical barriers to attract, repel, or stop movement. Physiological constraints, toxicology, reproductive control, and biological control provide a research review for control options. Gut physiology and related control pathways provide knowledge to improve toxin or pathogen delivery. This review provides a basis for developing approaches and research for controlling invasive grass carp populations, aquaculture, and native population management.

show abstract

“…Detritivorous invertebrates consume their own feces as well as that of other species (Hynes 1970). The isopod Asel 1 us aquaticus benefits from the consumption of grass carp ( Ctenopharygodon idella ) feces (Petridis 1990). Grass carp consume macrophytes and break down the material into smaller particles the isopod can more easily digest.…”

Section: Introductionmentioning

confidence: 99%