Evolution of the Cardiorespiratory System in Air-Breathing Fishes

Ishimatsu, Atsushi

doi:10.5047/absm.2012.00501.0001

Cited by 31 publications

(20 citation statements)

References 76 publications

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“…Previous studies have shown that even though permanent pools are connected to groundwater, environmental conditions are characterized by a very low concentration of dissolved oxygen (Escalera-Vázquez & Zambrano, 2010). These pools were dominated by functional group VI (Poeciliidae), which can tolerate extreme conditions of salinity, temperature and hypoxia (Meffe & Snelson, 1989), whereas the species of group III (O. aenigmaticum) is a facultative air-breather (Ishimatsu, 2012). …”

Section: Discussionmentioning

confidence: 99%

Fish functional groups in a tropical wetland of the Yucatan Peninsula, Mexico

Córdova-Tapia

Zambrano

2016

Neotrop. ichthyol.

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The characterization of species' functional traits is a major step in the understanding and description of communities in natural habitats. The classification of species into functional groups is a useful tool to identify redundancy and uniqueness. We studied the fish community of a pristine freshwater wetland in the Sian Ka'an Biosphere Reserve by analysing two multidimensional functions: food acquisition and locomotion. We investigated changes in the functional group structure between habitats (permanent and temporary pools) and seasons (dry and wet). Six functional groups with different ecological characteristics were detected, two of which had high functional redundancy and three of them were represented by single species with unique ecological functions. In permanent pools during the dry season, functional group richness and diversity were lower, while evenness was higher. During the wet season, all functional groups were detected and similar functional group structure was found between habitats. These results suggest an effect of environmental filtering during the dry season and niche complementarity during the wet season.La caracterización de los rasgos funcionales de las especies es un paso importante en la comprensión y descripción de las comunidades en hábitats naturales. La clasificación de especies en grupos funcionales es una herramienta útil para identificar la redundancia y la especialización. Se estudió la comunidad de peces de un humedal prístino de agua dulce en la Reserva de la Biosfera de Sian Ka'an, analizando dos funciones multidimensionales: adquisición de alimento y la locomoción. Analizamos los cambios en la estructura de los grupos funcional entre hábitats (permanentes y temporales) y temporadas (lluvias y secas). Seis grupos funcionales con características ecológicas distintas fueron detectados, dos de los cuales presentaron una alta redundancia funcional y tres de ellos están representados únicamente por una especie con una función ecológica particular. En las pozas permanentes durante la temporada de secas, la riqueza y diversidad de grupos funcionales fueron menores; mientras que la equitatividad de grupos funcionales fue mayor. Durante la temporada de lluvias se detectaron todos los grupos funcionales y la estructura de los grupos fue similar entre los hábitat. Estos resultados sugieren que los filtros ambientales tienen un efecto durante la temporada de secas y la complementariedad de nicho durante la temporada de lluvias.

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Section: Discussionmentioning

confidence: 99%

Fish functional groups in a tropical wetland of the Yucatan Peninsula, Mexico

Córdova-Tapia

Zambrano

2016

Neotrop. ichthyol.

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“…In modern Actinopterygii, cardiovascular shunts are primarily found in air-breathing fish, which evolved independently many times (Graham, 1997;Lefevre et al, 2014;Damsgaard et al, 2019). Typically, air-breathing fish have dedicated vascular circuits serving the air-breathing organ (gas bladder, labyrinth organ, gut, skin) (Randall et al, 1981;Olson, 1994;Graham, 1997;Little, 2009;Ishimatsu, 2012). Alternative cardiovascular pathways have evolved to enable perfusion of the air-breathing organ to facilitate aerial gas exchange, and also provided the opportunity to bypass either the respiratory or systemic circulation.…”

Section: The Systematics Of Vertebrate Cardiovascular Shuntingmentioning

confidence: 99%

“…Yet, the answer to the question 'What is the purpose of cardiovascular shunts?' has remained elusive, fueling a key debate in contemporary comparative physiology (Burggren, 1987;, 2012Farmer & Carrier, 2000;Wang et al, 2001;Farmer & Hicks, 2002;Hicks, 2002;Wang & Hicks, 2002Wang, Altimiras, & Axelsson, 2002;Krosniunas & Hicks, 2003;Farmer et al, 2008;Eme et al, 2009Eme et al, , 2010Joyce et al, 2016;Malte et al, 2017). Researchers have used ever more sophisticated experimental approaches, with the goal of identifying 'the reason' underpinning cardiovascular shunting as an adaptation.…”

Section: Cardiovascular Shunts In Ectothermic Vertebrates: Theorimentioning

confidence: 99%

“…The lack of emergence of a single clear-cut function for cardiovascular shunting has inadvertently fostered the suggestion that shunts have no function. Consequently, some authors have suggested that shunts in extant animals are simply vestigial features remaining from the earlier evolution of the central cardiovascular circulation , 2012Hicks, 2002). Hicks (2002, p. 243) commented that 'Strong experimental evidence supporting the hypothesis that cardiac shunts are an adaptive trait remains elusive', and continued 'There is no a priori reason to believe that shunts are an adaptive trait favored by natural selection'.…”

Section: Arguments For Cardiovascular Shunts As Adaptationsmentioning

confidence: 99%

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Cardiovascular shunting in vertebrates: a practical integration of competing hypotheses

2019

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This review explores the long‐standing question: ‘Why do cardiovascular shunts occur?’ An historical perspective is provided on previous research into cardiac shunts in vertebrates that continues to shape current views. Cardiac shunts and when they occur is then described for vertebrates. Nearly 20 different functional reasons have been proposed as specific causes of shunts, ranging from energy conservation to improved gas exchange, and including a plethora of functions related to thermoregulation, digestion and haemodynamics. It has even been suggested that shunts are merely an evolutionary or developmental relic. Having considered the various hypotheses involving cardiovascular shunting in vertebrates, this review then takes a non‐traditional approach. Rather than attempting to identify the single ‘correct’ reason for the occurrence of shunts, we advance a more holistic, integrative approach that embraces multiple, non‐exclusive suites of proposed causes for shunts, and indicates how these varied functions might at least co‐exist, if not actually support each other as shunts serve multiple, concurrent physiological functions. It is argued that deposing the ‘monolithic’ view of shunting leads to a more nuanced view of vertebrate cardiovascular systems. This review concludes by suggesting new paradigms for testing the function(s) of shunts, including experimentally placing organ systems into conflict in terms of their perfusion needs, reducing sources of variation in physiological experiments, measuring possible compensatory responses to shunt ablation, moving experiments from the laboratory to the field, and using cladistics‐related approaches in the choice of experimental animals.

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“…Kompletní přehled čeledí ryb s různými dalšími typy doplň-kových dýchacích orgánů uvádějí Helfman a kol. (2009) a Ishimatsu (2012). Jako pozoruhodnou zajímavost lze uvést odolnost karase obecného (Carassius carassius) k anoxii (absenci kyslíku) ve vodě s nízkou teplotou, kde dokážou přežít i ně-kolik měsíců.…”

Section: Náměty Na Pokusy a Pozorování Vodních žIvočichů Ve šKolním Aunclassified

Náměty na pokusy a pozorování vodních živočichů ve školním akváriu II (dýchání vodních živočichů)

Hanel¹

2018

Biologie. Chemie. Zeměpis

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Evolution of the Cardiorespiratory System in Air-Breathing Fishes

Cited by 31 publications

References 76 publications

Fish functional groups in a tropical wetland of the Yucatan Peninsula, Mexico

Fish functional groups in a tropical wetland of the Yucatan Peninsula, Mexico

Cardiovascular shunting in vertebrates: a practical integration of competing hypotheses

Náměty na pokusy a pozorování vodních živočichů ve školním akváriu II (dýchání vodních živočichů)

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