Patrones de abundancia, composición trófica y distribución espacial del ensamble de peces intermareales de la zona centro-sur de Chile

Quijada, Pablo A.; M, Cristian W. Caceres

doi:10.4067/s0716-078x2000000400016

Cited by 24 publications

(12 citation statements)

References 4 publications

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“…The fit obtained to the theoretical logarithmic curve of relative species abundance suggests that the fish assemblage found dead provides a good representation of the ichthyofauna currently inhabiting the bay. This result is also validated by the species composition found in Coliumo Bay before the stranding event (Table III) and by earlier studies (Jara, 1992; Ojeda et al , 2000; Quijada & Cáceres, 2000). Despite the magnitude of the fish stranding, the fish community inhabiting Coliumo Bay recovered in a time scale of only a few months.…”

Section: Discussionsupporting

confidence: 88%

A major fish stranding caused by a natural hypoxic event in a shallow bay of the eastern South Pacific Ocean

Hernández‐Miranda

Quiñones

Aedo

et al. 2010

Journal of Fish Biology

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A massive beaching and mortality of fishes occurred in Coliumo Bay, a shallow bay located along the coast of the eastern South Pacific Ocean on 3 January 2008. This stranding was a consequence of an abrupt decrease in the dissolved oxygen concentration throughout the whole water column, due to the effect of intense upwelling along the coast off central-southern Chile. The main objectives of this study were: (1) to characterize taxonomically and biologically the fish species assemblage present in this beaching; (2) to evaluate several physiological indicators for the condition of the beached species at the time of their death; and (3) to assess the possible cause-effect mechanisms involved in the fishes death and the changes that took place in the fish community throughout the time. In this beaching, 26 fish species were identified: 23 teleosts, one myxiniform and two elasmobranchs. Most beached specimens were juveniles. Haematological and histological evidence indicate that severe hypoxia that lasted for at least 48 h was the most plausible cause of death. The main conclusion of this study is that the presence of oxygen-poor equatorial sub-surface water in the shallow coastal zone due to intense regional-scale upwelling caused the fish stranding. Although the effect of the hypoxic event was severe for the fish assemblage of Coliumo Bay, the rapid recuperation observed suggests that hypoxic events at the local spatial scale can be buffered by migration processes from the fish community inhabiting close by areas non-affected by low oxygen conditions. The effect that severe hypoxic events may have on larger spatial scales remains unknown.

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Section: Discussionsupporting

confidence: 88%

A major fish stranding caused by a natural hypoxic event in a shallow bay of the eastern South Pacific Ocean

Hernández‐Miranda

Quiñones

Aedo

et al. 2010

Journal of Fish Biology

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“…Randall (1967) (1989), no litoral do Espírito Santo, descreveu principalmente poliquetas, isópodes e anfípodes nos tubos digestivos de Labrisomus nuchipinnis. Quijada & Cáceres (2000), na costa do Chile, encontraram crustáceos decápodes como principal item na alimentação dos labrisomídeos Auchenionchus variolosus e Calliclinus geniguttatus. Também para uma espécie da família Labrisomidae, endêmica das ilhas Galápagos, Dialommus fuscus, Nieder (2001) confirmou o hábito carnívoro e encontrou principalmente decápodes e copépodes, além de anfípodes, isópodes e poliquetas no conteúdo estomacal.…”

Section: Discussionunclassified

Dieta e comportamento alimentar de Malacoctenus delalandii (Perciformes: Labrisomidae)

Pereira

Jacobucci

2008

Biota Neotrop.

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This work analyzed the diet composition and the feeding behavior of Malacoctenus delalandii, a carnivorous species, with diurnal habit, that lives in holes and crevices of rock areas in tropical waters. For diet evaluation, 31 individuals were collected during diving using hand nets, in the Fortaleza beach, Ubatuba. The feeding offer was analyzed comparing the stomach contents of the collected individuals with ten samples of the Amphiroa beauvoisii calcareous algal phytal, the species foraging site. To describe the feeding behavior of M. delalandii 44 observation sections were performed using ad libitum and focal animal methods. The food items considered constant were crustaceans belonging to the order Isopoda (75.8%) and the suborder Gammaridea (86.2%), confirming the species carnivorous feeding habit. There was a significant difference (G = 278.89, df = 70, p < 0.01) between the availability of items in the substrate and the occurrence in the stomachs. A total of 410 minutes (6.8 hours) of direct underwater observations were performed, and we concluded that the individuals use the grubber excavation while moving feeding strategy. The species presented a foraging rate of 0.74 ± 0.164 bites per minutes (average ± standard deviation), evidencing low feeding activity and cryptobenthic habit. Resumo: O presente estudo teve como objetivo analisar a composição da dieta e o comportamento alimentar de Malacoctenus delalandii, uma espécie carnívora, de hábitos diurnos, que habita tocas e frestas de ambientes rochosos de águas tropicais. Para avaliação da dieta, foram coletados 31 indivíduos utilizando puçás, na praia da Fortaleza, município de Ubatuba. A oferta alimentar foi analisada comparando-se o conteúdo estomacal dos indivíduos com dez amostras do fital da alga calcária Amphiroa beauvoisii, local de forrageio da espécie. Para descrever o comportamento alimentar de M. delalandii foram realizadas 44 sessões de observação usando técnicas ad libitum e animal focal. Os itens alimentares considerados constantes foram os crustáceos pertencentes à ordem Isopoda (75,8%) e à subordem Gammaridea (86,2%), confirmando o hábito alimentar carnívoro da espécie. Houve uma diferença significativa (G = 278,89, g.L. = 70, p < 0,01) entre a disponibilidade de itens no substrato e a ocorrência destes nos estômagos. Foram realizados 410 minutos (6,8 horas) de observações subaquáticas diretas e concluiu-se que os indivíduos utilizam a estratégia alimentar de especulação do substrato ("grubber excavation while moving"). A espécie apresentou uma taxa de forrageamento de 0,74 ± 0,164 mordicadas per minutes (média ± desvio padrão), evidenciando baixa atividade alimentar e hábito criptobêntico. Palavras-chave: blênio, ecologia trófica, conteúdos estomacais, atividade de forrageamento, sudeste do Brasil.

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“…Although clingfish have been frequently recorded in the intertidal coastal zone of Chile, they are not very abundant because they represent between 3% and 14% of the total abundance of the fish assemblage of central Chile Ojeda 1997, 1998;Quijada and Cáceres 2000;Berrios and Vargas 2004;Muñoz and Cortés 2009). Consequently, biological studies have been based on small sample sizes, which may affect the statistical significance of the analyzed data.…”

Section: Four Clingfish Species Have Been Recorded In Chilementioning

confidence: 99%

“…In Chile, the trophic habits of 3 clingfish have been reported (Cancino and Castilla 1988;Ojeda 1997, 1998;Quijada and Pardo-Gandarillas et al 2004;Muñoz and Zamora 2011), and a few of these studies have included parasite community analyses (Pardo-Gandarillas et al 2004;Muñoz and Zamora 2011). In particular, G. marmoratus is a small carnivorous fish that reaches up to 15 cm in length and harbors at least 10 eumetazoan parasites and 5 myxosporideans (Pardo-Gandarillas et al 2004).…”

Section: Four Clingfish Species Have Been Recorded In Chilementioning

confidence: 99%

Parasites communities in the clingfish Gobiesox marmoratus from central Chile

Muñoz

2014

Acta Parasitologica

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This study investigated the factors (i.e., season, locality, sampling year, total length and maturity stage of the hosts) that might influence the structure of parasite populations and communities in the clingfish Gobiesox marmoratus. The parasite community was described and analyzed using numerical descriptors, such as prevalence, intensity and species richness, between factors previously mentioned. A total of 260 clingfish were collected from 2 localities of central Chile, four seasons and during 3 year cycles (from July 2006 to July 2009). In the whole clingfish sample, 668 parasites were found, which belonged to 14 parasite taxa; 9 of them were new records in G. marmoratus. Parasite infracommunity richness ranged 0-3 species, although 1 trematode species, Helicometrina nimia, represented 80% of all parasites collected and was the most abundant and prevalent parasite species. The average of parasite abundance and intensity (± SD) was 2.5 ± 8.2 and 7.5 ± 12.7, respectively. Generalized linear model showed that parasite communities were influenced by season, locality, sampling year, and maturity stage when considering the abundance and intensity of parasites. For the parasite richness, only the locality and maturity of fish was determinant for explaining the differences. The populations and communities of the parasite variations were variable due to differences in fish body length because prevalence, abundance and intensity of parasites significantly correlated with the fish body length. Concordantly, maturity fish were longer than immature fish. Thus, clingfish from El Tabo were longest and mature, which harbored higher parasite richness than those fish from Las Cruces.

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Patrones de abundancia, composición trófica y distribución espacial del ensamble de peces intermareales de la zona centro-sur de Chile

Cited by 24 publications

References 4 publications

A major fish stranding caused by a natural hypoxic event in a shallow bay of the eastern South Pacific Ocean

A major fish stranding caused by a natural hypoxic event in a shallow bay of the eastern South Pacific Ocean

Dieta e comportamento alimentar de Malacoctenus delalandii (Perciformes: Labrisomidae)

Parasites communities in the clingfish Gobiesox marmoratus from central Chile

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