Diversity of Aplocheiloidei

Loureiro, Marcelo; Sá, Rafael de Queiroz Cavalcanti de Artur

doi:10.1201/b19016-3

Cited by 14 publications

(14 citation statements)

References 46 publications

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“…This annual fish shows a wide feeding spectrum (25 food items), consuming mostly small crustaceans (mainly Cladocera and Copepoda), and autochthonous insects (mainly larvae of Diptera). A generalist diet, consisting of small autochthonous invertebrates, was also found by Keppeler et al (2013) to C. fulgens (52 food items) and by Gonçalves et al (2011) and Laufer et al (2009) to C. melanotaenia (26 and 23 food items, respectively), suggesting that this characteristic can be standard in the family (Harrington & Rivas, 1958;Huehner et al, 1985;Costa, 1987Costa, , 1998Costa, , 2009Davis et al, 1990;Taylor, 1992;Shibatta & Rocha, 2001;Shibatta & Bennemann, 2003;Arim et al, 2010;Abilhoa et al, 2010a, b;Contente & Stefanoni, 2010;Polačik & Reichard, 2010;Cavalheiro & Fialho, 2016;Loureiro & de Sá, 2016;Ortiz & Arim, 2016). The generalist feeding strategy is an expected characteristic for the life history of C. fulgens and other annual fishes, since they live in temporary habitats with varied environmental conditions, conferring high resistance to changes in food resources (Costa, 1995(Costa, , 2002aLaufer et al, 2009;Polačik & Reichard, 2010;Keppeler et al, 2013).…”

Section: Discussionmentioning

confidence: 96%

Ontogenetic variations and feeding habits of a Neotropical annual fish from southern Brazil

Dias

Stein

Fialho

2017

Iheringia, Sér. Zool.

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ABSTRACT. Knowing the feeding biology of a population and its ontogenetic aspects can help in understanding the functioning of fi sh assemblages, essential to the conservation of the habitat biodiversity in which these species are found. Annual fi shes complete their life cycle in temporary aquatic environments, existing in adult stage only for brief annual periods. Changes in the feeding habits between diff erent size classes could indicate that a species belongs to diff erent feeding groups in diff erent growth phases. The aim of this work was to characterize the diet of Cynopoecilus fulgens Costa, 2002 in a temporary fl ooded area in the coastal plain of southern Brazil, taking into consideration possible alterations in feeding habits in diff erent body size classes caused by ontogenetic changes, to explain the coexistence of these individuals in a short space of time. The diet analysis indicated that C. fulgens is a generalist, consuming small crustaceans and autochthonous insects. Intraspecifi c diff erences in diet were determined when compared between nine classes of standard length. Adults fed mainly on autochthonous insects, and juveniles ingested mostly crustaceans, with the population being separated into two trophic groups: invertivores and invertivores with a tendency towards zooplanktivory. It is possible to conclude that the ontogenetic changes in the diet of C. fulgens are related to morphological restrictions due to the size of the individuals, since feeding competitive relations are probably not so evident.KEYWORDS. Cynopoecilus fulgens, invertivory, intraspecifi c feeding overlap, generalist feeding strategy.RESUMO. Variações ontogenéticas e hábitos alimentares de um peixe anual Neotropical do sul do Brasil. Conhecer a biologia alimentar de uma população e seus aspectos ontogenéticos podem auxiliar na compreensão do funcionamento de assembleias de peixes, fundamental para a conservação da biodiversidade do habitat no qual estas espécies são encontradas. Peixes anuais completam seu ciclo de vida em ambientes aquáticos temporários, sendo encontrados no estágio adulto somente em breves períodos anuais. Mudanças nos hábitos alimentares entre diferentes classes de tamanho podem indicar que uma espécie pertence a distintos grupos alimentares nas diferentes fases do crescimento. Este trabalho teve como objetivo caracterizar a dieta de Cynopoecilus fulgens Costa, 2002 em uma área temporariamente alagada na planície costeira sul-riograndense, levando em consideração possíveis alterações nos hábitos alimentares nas diferentes classes de tamanho corporal causadas por mudanças ontogenéticas, visando explicar a coexistência destes indivíduos em um curto espaço de tempo. A análise da dieta indica que C. fulgens é uma espécie generalista, ingerindo pequenos crustáceos e insetos autóctones. Diferenças intraespecífi cas na composição da dieta foram verifi cadas quando comparadas entre as nove classes de comprimento padrão estabelecidas. Adultos se alimentaram principalmente de insetos autóctones, enquanto os j...

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Section: Discussionmentioning

confidence: 96%

Ontogenetic variations and feeding habits of a Neotropical annual fish from southern Brazil

Dias

Stein

Fialho

2017

Iheringia, Sér. Zool.

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“…Among the annual killifishes of America, the only species of the family Cynolebiidae that is distributed in the northern part of the continent is Millerichthys robustus (Domínguez‐Castanedo et al, 2003; Domínguez‐Castanedo et al, ; Loureiro and de Sá, ; Eschmeyer and Fong, ). The isolation in which this species has developed an annual life history represents a relatively unexplored branch of annual killifishes, and thus is a useful model with which to understand and compare the influence of different environmental patterns on development of diapause and the evolution of the annual life history.…”

Section: Introductionmentioning

confidence: 99%

Developmental ecology of annual killifish Millerichthys robustus (Cyprinodontiformes: Cynolebiidae)

Domínguez-Castanedo

Valdesalici

Rosales‐Torres

2017

Developmental Dynamics

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Populations of annual killifishes persist in temporary water bodies over the dry season through the expression of diapause in their drought-resistant embryos. Environmental cues may influence expression of the diapause phenotype during embryonic incubation. Millerichthys robustus is the only annual killifish distributed in North America. The aim of this review is to analyze the ecology of M. robustus development and contrast this with that of annual killifishes in austral locations. The temporary water bodies inhabited by M. robustus present the following environmental conditions: flood, drought, and humidity. During the flooding period, the environment presents the lowest temperatures, shortest photoperiod, and highest precipitation, and embryos were found in diapause I. The drought period features the highest temperatures and lowest precipitation, and embryos were found in diapause II. In contrast, during the humid period at the beginning of the rainy season, embryos were found in diapause I, II, and III, associated with the longer photoperiod and high temperatures. These dynamics of the diapause phenotypes can be explained by a combination of the strategies of phenotypic plasticity during flood and drought periods, and bet-hedging during the humid period. Moreover, the microenvironmental conditions in which embryos were buried could influence developmental trajectories. Developmental Dynamics 246:802-806, 2017. © 2017 Wiley Periodicals, Inc.

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“…Remarkable diversity in the capacity to cope with marginal aquatic habitats has been reported for Cyprinodontiformes, which can inhabit or specialize on intertidal or ephemeral habitats with environmental conditions unsuitable for other fishes (Turko & Wright, ). These adaptations are especially pronounced in two large aplocheiloid families (suborder Aplocheiloidei), the Neotropical Rivulidae and African Nothobranchiidae (Loureiro & de Sá, ). In both families, there are several clades of annual killifishes capable of completing their entire life cycle in ephemeral ( i.e .…”

Section: Introductionmentioning

confidence: 99%

Seasonal dynamics in community structure, abundance, body size and sex ratio in two species of Neotropical annual fishes

Lanés

Godoy

Maltchik

et al. 2016

Journal of Fish Biology

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Seven ephemeral pools on the coastal plain of southern Brazil were found to be inhabited by three annual and 22 non-annual fish species. Two common annual species (Austrolebias minuano and Cynopoecilus fulgens) exhibited clear seasonal dynamics, with the appearance of young fishes in the austral autumn (May to June) and a decline in abundance over the seasonal cycle. The third annual species, Austrolebias wolterstorffii, was rare. No seasonal dynamics were observed in non-annual fishes. The relative abundance of non-annual fishes compared with annual fishes increased over the seasonal cycle, but they coexisted widely. The size structure of annual fishes suggested the presence of a single age cohort in most pools though a second age cohort was registered in one pool in August, coinciding with a large flooding. Strong sexual dimorphism in body size was found in C. fulgens throughout the seasonal cycle, while no sexual dimorphism in body size was found in A. minuano. Female-biased sex ratios were recorded in both common annual fish species in the last three sampling dates (in spring), but not during the first two sampling dates (in winter). The natural lifespan of annual fishes was <8 months. Annual fishes disappeared before habitat desiccation in half of the pools, while non-annual fishes were still present.

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Diversity of Aplocheiloidei

Cited by 14 publications

References 46 publications

Ontogenetic variations and feeding habits of a Neotropical annual fish from southern Brazil

Ontogenetic variations and feeding habits of a Neotropical annual fish from southern Brazil

Developmental ecology of annual killifish Millerichthys robustus (Cyprinodontiformes: Cynolebiidae)

Seasonal dynamics in community structure, abundance, body size and sex ratio in two species of Neotropical annual fishes

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