Evaluation of a Gastric Lavage Method for Use on Largemouth Bass

Hakala, James P.; Johnson, Frank D.

doi:10.1577/m03-092.1

Cited by 20 publications

(24 citation statements)

References 17 publications

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“…In addition, when testing the efficiency of the method with P. pappenheimi, no deaths were recorded during or after the GL. These results are consistent with several other studies using different species (Light et al 1983, Hakala and Johnson 2004, Wanner 2006, Shuman and Peters 2007.…”

supporting

confidence: 93%

“…Studies of fish feeding ecology usually require sacrificing a great number of individuals (Petridis andO'Hara 1988, Barnett et al 2010). This can inflict severe effects on natural populations since it can reduce genetic diversity to deleterious levels (Kamler and Pope 2001), alter population structure (Light et al 1983), and even create a bad impression of fisheries science to the society as a whole (Hakala and Johnson 2004). The situation is even worse when dealing with a species or a population that is already threatened (Shuman and Peters 2007).…”

mentioning

confidence: 99%

“…All fish were dissected to see if there were any remaining food items not retrieved by the GL. The efficiency was calculated as the percentage of recovered items (weight) during GL in relation to the total ingested by the fish (remaining items in the stomach added to the recovered by the GL) (Hakala and Johnson 2004).…”

mentioning

confidence: 99%

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Gastric lavage for dietary studies of small fishes: Efficiency, survival and applicability

Braga¹,

Ribeiro²,

Bornatowski³

et al. 2017

Acta Ichthyol. Piscat.

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Braga R.R., Ribeiro V.M., Bornatowski H., Abilhoa V., Vitule J.R.S. 2017. Gastric lavage for dietary studies of small fishes: Efficiency, survival and applicability. Acta Ichthyol. Piscat. 47 (1): 97-100.Abstract. Studies on feeding ecology provide information of great importance to the understanding of aquatic ecosystems. However, these studies usually require the sacrifice of animals. In view of this problem, the presently reported study aims to evaluate the effectiveness and applicability of the gastric lavage method for small catfishes. There was no mortality recorded for the 80 specimens of Rhamdia quelen (Quoy et Gaimard, 1824) and after recovery from anaesthesia all fish presented a normal swimming pattern. With the gastric lavage method we were able to retrieve 71.4% of the stomach contents of 34 specimens of Pimelodella pappenheimi Ahl, 1925. These results serve as a stimulus for studies prioritizing non-lethal techniques. These methods would ensure greater knowledge about ecology and conservation of smaller fishes, especially to populations of small and rare species that are the most endangered in freshwater systems.

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supporting

confidence: 93%

mentioning

confidence: 99%

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Gastric lavage for dietary studies of small fishes: Efficiency, survival and applicability

Braga¹,

Ribeiro²,

Bornatowski³

et al. 2017

Acta Ichthyol. Piscat.

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“…The flushing method, or gastric lavage, is the most simple and efficient method used to safely remove food items without sacrificing the fish (Hyslop, 1980;Hartleb & Moring, 1995;Hakala & Johnson, 2004), and has been used safely and efficiently in studies of food habits of various salmonids and sturgeon species (see Kamler & Pope, 2001;Brosse et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

Assessing diet composition of seahorses in the wild using a non destructive method: Hippocampus reidi (Teleostei: Syngnathidae) as a study-case

et al. 2008

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This paper presents the results of the first analysis of the natural diet of Hippocampus reidi, one of the most sought after seahorse species in the international aquarium trade. Its main goals were to investigate food items and prey categories consumed by the species, and to discuss feeding strategy and inter and intra-individual components of niche breadth. Data were gathered from October 2005 to September 2006 at the Mamanguape estuary, State of Paraíba, NE Brazil. Food items from seahorses anaesthetized with clove oil were obtained by using a modified version of the flushing method, and were counted and identified to the lowest possible taxonomic level. Specimens were marked and had their height, sex, life and reproductive stage recorded, and then returned to the same place where they were found for the further assessment of anaesthetization/gut flushing on seahorses. Food items were analyzed using frequency of occurrence, relative abundance, index of preponderance and prey-specific abundance using the points method. The graphic method of Amundsen et al. (1996) was used to interpret the feeding strategy and contribution to niche breadth. Nematodes and crustaceans were the most important items found, the latter item usually being the most commonly found in the gut contents of syngnathids. No significant differences in diet composition were found between reproductive stages, however, a higher proportion of large items were consumed by the larger seahorses. The feeding strategy and niche breadth analysis suggests that H. reidi has a generalist feeding strategy, with high variation between phenotypes. Our results suggest that the anaesthetization-flushing technique has the potential to be a useful tool in seahorse research.Este artigo apresenta os resultados do primeiro estudo sobre a alimentação natural de Hippocampus reidi, uma das espécies de cavalos-marinhos mais intensamente comercializadas pelo mercado aquarista. Seus principais objetivos foram descrever os itens alimentares e categorias de presas consumidos pela espécie e fornecer informações acerca da estratégia alimentar e dos componentes inter e intra-individuais para a largura de nicho. As amostragens foram realizadas mensalmente por meio de busca intensiva, entre outubro de 2005 e setembro de 2006, no estuário do rio Mamanguape, Paraíba, onde os cavalos marinhos foram marcados, anestesiados com óleo de cravo e submetidos à técnica da lavagem estomacal. Para cada cavalo-marinho registrouse a altura, sexo, estágio de vida e estado reprodutivo. Após a coleta de dados, todos os cavalos-marinhos foram devolvidos ao mesmo local onde haviam sido encontrados e o material obtido através da lavagem foi identificado, em laboratório, até o menor nível taxonômico possível, com o auxílio de especialistas. Os itens alimentares foram descritos através de freqüência de ocorrência, abundância relativa, índice de preponderância e abundância específica; já a estratégia alimentar e contribuição para a largura de nicho foram descritos através do método de Amundsen. Os pri...

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“…Gastric lavage is an effective and relatively nonlethal method of removing ingested prey items (Brosse et al 2002;Hakala and Johnson 2004;Barbour et al in review). Pulsed gastric lavage removes stomach contents by using pressurized water from a tube inserted past the esophagus, causing regurgitation of consumed food items (Light et al 1983;Hartleb and Moring, 1995;Fowler and Morris 2008).…”

Section: Sampling Effortmentioning

confidence: 99%

Resource Partitioning Among Three Mesoconsumers at a Marsh Mangrove Ecotone: a Response to a Seasonal Resource Pulse Subsidy

Boucek¹

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Evaluation of a Gastric Lavage Method for Use on Largemouth Bass

Cited by 20 publications

References 17 publications

Gastric lavage for dietary studies of small fishes: Efficiency, survival and applicability

Gastric lavage for dietary studies of small fishes: Efficiency, survival and applicability

Assessing diet composition of seahorses in the wild using a non destructive method: Hippocampus reidi (Teleostei: Syngnathidae) as a study-case

Resource Partitioning Among Three Mesoconsumers at a Marsh Mangrove Ecotone: a Response to a Seasonal Resource Pulse Subsidy

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