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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EG - Zoologie

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Journal of Fish Biology

ISSN

0022-1112

e-ISSN

—

Svazek periodika

89

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

20

Strana od-do

2345-2364

Kód UT WoS článku

000387102300008

EID výsledku v databázi Scopus

2-s2.0-84987800304