Assessing the trophic ecology of crayfish: a case study of the invasive Procambarus clarkii

Crehuet, María; Alcorlo, Paloma; Bravo-Utrera, Miguel Ángel; Baltanás, Ángel Luis; Montes, Carlos

doi:10.1007/978-1-4020-6029-8_30

Cited by 4 publications

(2 citation statements)

References 49 publications

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“…The second relates to its feeding habits. As a major consumer, P. clarkii may perform a significant role ingesting large quantities of detrital organic material (Ilhéu and Bernardo, 1995; Gutiérrez-Yurrita et al, 1998; Correia et al, 2005) and, to a lesser extent; it consumes great quantities of insects (Gutiérrez-Yurrita and Montes, 2004;Crehuet et al, 2007). In addition, some authors have suggested that P. clarkii is responsible for the disappearance of two species of mollusk (Lymnaea peregra Müller (1774) and Lymnaea stagnalis Linnaeus (1758)), and possibly, for the local extinction of at least three species of macrophytes (Myriophyllum alterniflorum DC, Utricularia australis R.…”

Section: Introductionmentioning

confidence: 99%

Ecological Design of a Crayfishing Program to Control Population Density of the Invasive Species Procambarus Clarkii in Doñana National Park Freshwater Marsh (Spain)

Gutiérrez-Yurrita

Marín-García

Montes

2015

AEER

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Gutiérrez-Yurrita et al.: Ecological design of a crayfishing program to control population density of the invasive speciesProcambarus Clarkii -513 - Abstract. The exploitation of Procambarus clarkii in Doñana National Park's freshwater marsh (DNP) has been economically important to the local human population since the 1970s. The high density of this crayfish species has been causing a major environmental impact in the Park by the substantial reduction of submerging aquatic macrophytes prairies due to its broad trophic spectrum and feeding habits, which turned the environmental frame (consisting in clear water equilibrium) into a turbid water balance. Differences in population dynamics of three population groups of P. clarkii in the DNP freshwater marsh were compared and analyzed from a fishery perspective. The objective is to reduce their ecological impact using optimal crayfishing management. Maximum growth curves showed that crayfish have different growth optimums. Recruitment of young crayfish varies between different populations; when there is an excessive increase in the density of juveniles in a population and conditions are stressful, their growth is deficient. If these conditions persist, the population could become stunted. Fishery for commercial gain is banned in DNP; however, a model of fisheries program aimed at controlling the excess population of crayfish can be effective in halting the ecological impact of this invasive species while providing an opportunity for poachers to have viable productive options. The model proposed can help to solve the problem of crayfish "poaching" through the legalization and strict control of harvesting practices.

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Section: Introductionmentioning

confidence: 99%

Ecological Design of a Crayfishing Program to Control Population Density of the Invasive Species Procambarus Clarkii in Doñana National Park Freshwater Marsh (Spain)

Gutiérrez-Yurrita

Marín-García

Montes

2015

AEER

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“…The red swamp crayfish Procambarus clarkii, a native species from northeastern Mexico and south central USA, has been introduced worldwide for commercial and recreational purposes. This species is currently found in many water bodies all over the world and behaves like a generalist that is able to consume algae, macrophytes, aquatic invertebrates, and vegetal detritus [22][23][24][25][26][27][28][29][30][31][32]. The first record of P. clarkii in Portugal dates back to 1979 [33] and is now present in many freshwater habitats from southern to northeastern of continental Portugal as well as in São Miguel Island in the archipelago of Azores [34][35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the preferences of red swamp crayfish (Procambarus clarkii) fed with Riparian tree leaves: A microcosm study

Fidalgo

Ferreira

Sampaio

2013

Internat. Rev. Hydrobiol.

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We conducted a microcosm study to assess the preferences of Procambarus clarkii (Girard, 1852), an invasive and successful crayfish species, for conditioned leaf litter from alder, oak, and plane with and without feces access. Some chemical foliar characteristics were determined at the beginning and at the end of the experiment. Alder and plane leaves had higher total nitrogen and lower C:N ratio than oak. Oak and plane exhibited similar polyphenol contents. Animals preferred alder>plane>oak leaves (p < 0.0001) and a coprophagous trend was observed. Consumption rates varied among litters according to fecal availability and the interaction litter/fecal availability. Our results suggest that the importance of P. clarkii in breakdown of riparian tree leaves depends not only on the tree species and their characteristics, but also on access to fecal material. Leaf species with high N contents and low C:N ratios would be preferably consumed by the crayfish, and the consumption would be faster in lotic than in lentic systems.

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Monitoring Aquatic Ecosystems at Doñana Natural Space

Bravo-Utrera

2009

Biological Monitoring in Freshwater Habitats

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Assessing the trophic ecology of crayfish: a case study of the invasive Procambarus clarkii

Cited by 4 publications

References 49 publications

Ecological Design of a Crayfishing Program to Control Population Density of the Invasive Species Procambarus Clarkii in Doñana National Park Freshwater Marsh (Spain)

Ecological Design of a Crayfishing Program to Control Population Density of the Invasive Species Procambarus Clarkii in Doñana National Park Freshwater Marsh (Spain)

Assessment of the preferences of red swamp crayfish (Procambarus clarkii) fed with Riparian tree leaves: A microcosm study

Monitoring Aquatic Ecosystems at Doñana Natural Space

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