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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F16%3A00466159" target="_blank" >RIV/68081766:_____/16:00466159 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1111/jfb.13122" target="_blank" >http://dx.doi.org/10.1111/jfb.13122</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jfb.13122" target="_blank" >10.1111/jfb.13122</a>

Result language

angličtina

Original language name

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

Original language description

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 <8months. Annual fishes disappeared before habitat desiccation in half of the pools, whilennon-annual fishes were still present.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EG - Zoology

OECD FORD branch

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Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Fish Biology

ISSN

0022-1112

e-ISSN

—

Volume of the periodical

89

Issue of the periodical within the volume

5

Country of publishing house

GB - UNITED KINGDOM

Number of pages

20

Pages from-to

2345-2364

UT code for WoS article

000387102300008

EID of the result in the Scopus database

2-s2.0-84987800304