Morphological abnormalities in the cladoceran Ilyocryptus spinifer (Apipucos Reservoir, Pernambuco State, Brazil)

Elmoor-Loureiro, Lourdes M. A.

doi:10.1590/s1519-69842004000100007

Cited by 11 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Para o Estado de Pernambuco, as pesquisas em reservatórios são bastante recentes e apenas um reduzido número de ambientes foram analisados quanto ao zooplâncton (NEUMANN-LEITÃO & SOUZA, 1987;NEUMANN-LEITÃO et al, 1989;BOUVY et al, 2001;ELMOOR-LOUREIRO, 2004;ALMEIDA et al, 2006;MELO-JÚNIOR et al, 2007a,b).…”

unclassified

Efeito das variáveis abióticas e do fitoplâncton sobre a comunidade zooplanctônica em um reservatório do Nordeste brasileiro

Dantas

Almeida

Barbosa

et al. 2009

Iheringia, Sér. Zool.

View full text Add to dashboard Cite

ABSTRACT. Abiotic variables and phytoplankton effects on zooplanktonic community from a reservoir in northeast Brazil. Zooplankton from Mundaú reservoir, State of Pernambuco, northeast Brazil was studied concerning temporal (hours and seasonal period) and spatial (pelagic and coastal regions in different depths) variabilities, correlating them to the environmental variables and the phytoplankton. Twenty-three infrageneric and five subgeneric zooplankton taxa were observed. On the whole, Rotifera was the dominant group during this study, especially influenced by the oxygen concentrations. Phytoplankton was dominated by Cyanobacteria. On the dry period, physical variables certainly controlled the zooplankton's development, allowing elevated algal densities. On the rainy period, zooplankton correlation with the system's nutrients levels on pelagic region probably conduced to a resources competition between phytoplankton and zooplankton, controlling algal densities.KEYWORDS. Dynamic, zooplanktonic community, reservoir, northeast Brazil. RESUMO.O zooplâncton do reservatório de Mundaú, Pernambuco, nordeste do Brasil foi estudado quanto a variabilidade temporal (entre os horários e períodos seco chuvoso) e espacial (nas regiões pelágica e litorânea em diferentes profundidades) correlacionando-as com as variáveis ambientais e com o fitoplâncton. Vinte e três táxons infragenéricos e cinco subgenéricos de zooplâncton foram encontrados. De forma geral, Rotifera foi o grupo dominante em todo o estudo. O fitoplâncton foi dominado pelas cianobactérias. No período seco, as variáveis físicas certamente controlaram o desenvolvimento do zooplâncton, favorecendo o estabelecimento de elevadas densidades algais. No período chuvoso, a correlação do zooplâncton com os níveis de nutrientes do sistema na região pelágica provavelmente conduziu a uma competição de recursos entre o fitoplâncton e o zooplâncton, controlando as densidades algais. PALAVRAS-CHAVE.Dinâmica, comunidade zooplanctônica, reservatório, nordeste do Brasil.

show abstract

unclassified

Efeito das variáveis abióticas e do fitoplâncton sobre a comunidade zooplanctônica em um reservatório do Nordeste brasileiro

Dantas

Almeida

Barbosa

et al. 2009

Iheringia, Sér. Zool.

View full text Add to dashboard Cite

show abstract

“…Finally, another factor that may be affecting the entry of Cladocera into the inner part of the lagoon is the discharge of sewage in natura (Carvalho et al, 2014), because the study of Elmoor-Elmoor-Loureiro (2004) indicates that contamination by toxic agents occurs. A polluted environment can have a low food quality, i.e.…”

Section: Discussionmentioning

confidence: 99%

Spatio-temporal variability in the Cladocera assemblage of a subtropical hypersaline lagoon

2022

View full text Add to dashboard Cite

Cladocera represent an important zooplankton group because of their seasonal prominence in terms of abundance and their contribution in controlling primary production (phytoplankton). On a global scale, there are few studies on Cladocera in hypersaline environments. The present work aims to evaluate the spatio-temporal variation of the Cladocera assemblage across a salinity gradient in the habitats of the Araruama Lagoon. Samples were collected in random months over a period of four years at 12 fixed stations in the Araruama Lagoon using a WP2 plankton net equipped with a flow meter. Our results do not reveal significant influence of the tide and seasonal variation as factors affecting the Cladocera assemblage. Five Cladocera species were found in the Araruama Lagoon, only in stations 11 and 12 where they reached an average of 1,799 ± 3,103 ind. m-3. The mean of the Shannon Diversity Index was 0.45 ± 0.2. The species that stood out in terms of frequency and abundance were: Penilia avirostris (frequency of occurrence: 71%), followed by Pseudevadne tergestina (41%). The same species also stood out in terms of relative abundance, Penilia avirostris (87%) and Pseudevadne tergestina (11%). The absence of Cladocera in the innermost parts of the lagoon suggests that their entrance to these locations is possibly inhibited by the salinity and temperature gradient of the lagoon, being the main factors influencing the dynamics of the Cladocera assemblages.

show abstract

“…Predation influences morphology through chemical cues, kairomones [14] , and physical stimulation [13] . Morphological abnormalities in Cladocera have recently been described for the genera Ilyocryptus [15,16] , Daphnia [17,18] , Coronatella [19] , Ceriodaphnia, Chydorus, and Bosmina [18] , and Pleuroxus [20] . This article describes morphological abnormalities in B. longirostris s.l.…”

Section: Introductionmentioning

confidence: 99%

Abnormalities in two Bosmina longirostris s.l. (OF Müller, 1785) populations (Crustacea: Branchiopoda: Bosminidae)

Soesbergen¹

2021

Int. J. Fauna Biol. Stud.

View full text Add to dashboard Cite

Abnormal trunk morphology is observed in two populations of Bosmina longirostris. One population is from a trout cultivation pond, the other from a pond with a very high angling pressure. The length and shape of the first antenna (trunk) of part of the population are abnormal. No abnormalities were observed at three locations, with low or no angling pressure. The observations are considered in the context of the described variation in the first antenna of this species. Possible causes of the abnormalities are discussed.

show abstract

Morphological abnormalities in the cladoceran Ilyocryptus spinifer (Apipucos Reservoir, Pernambuco State, Brazil)

Cited by 11 publications

References 9 publications

Efeito das variáveis abióticas e do fitoplâncton sobre a comunidade zooplanctônica em um reservatório do Nordeste brasileiro

Efeito das variáveis abióticas e do fitoplâncton sobre a comunidade zooplanctônica em um reservatório do Nordeste brasileiro

Spatio-temporal variability in the Cladocera assemblage of a subtropical hypersaline lagoon

Abnormalities in two Bosmina longirostris s.l. (OF Müller, 1785) populations (Crustacea: Branchiopoda: Bosminidae)

Contact Info

Product

Resources

About