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Shallow-water Campanulariidae (Hydrozoa, Leptothecatae) from Northern Bahía, Brazil

Authors: Kelmo, Francisco;

Shallow-water Campanulariidae (Hydrozoa, Leptothecatae) from Northern Bahía, Brazil

Abstract

La familia Campanulariidae es relativamente bien conocida, sin embargo varios aspectos de su biología y ecología no han sido aclarados. Este estudio presenta el primer enfoque semicuantitativo sobre los hidroidos campanularidos del noreste del Brasil, distribuidos hasta los 60 metros de profundidad y se basa en colecciones obtenidas desde 1992. Las colonias fueron colectadas de seis hábitats a lo largo de la costa de Ciudad de Salvador, Bahía de Todos os Santos, Isla de Itaparica hasta la región norte de la costa del estado de Bahia. Se registraron nueve especies de las 982 colonias examinadas: Campanularia hincksii, Clytia gracilis, C.hemisphaerica, C. Hummelincki, C. Linearis, C. Macrotheca, C. Noliformis, Obelia bidentata y O. Dichotoma. En la escala de abundancia Clytia gracilis y C. Noliformis fueron las especies más abundantes, mientras que Campanularia hincksii y Clytia hummelincki fueron las especies raras. El análisis de clasificación con datos de abundancia relativa mostró que las costas arenosas poseen una comunidad de hidroidos muy diferente a la de los otros hábitats. Se proporciona una clave simplificada de identificación, redescripciones, ilustraciones y un estudio del cnidoma para cada especie. Campanularia hincksii, Clytia macrotheca y C. noliformis se informan por primera vez para Brasil.

This study provides the first semi-quantititative account of the benthic campanulariid hydroids from Northern Bahia (Brazil), down to a depth of 60 m, based largely on collections obtained since 1992. Colonies were collected from six habitats along the coast of Salvador City, Todos os Santos Bay, Itaparica Island and at the northernmost part of the coast of the State of Bahia. From the 982 colonies examined, nine species were recorded: Campanularia hincksii, Clytia gracilis, C. hemisphaerica, C. hummelincki, C. linearis, C. macrotheca, C. noliformis, Obelia bidentata and O. dichotoma. Following a defined abundance scale, Clytia gracilis and C. noliformis were the most abundant species, whereas Campanularia hincksii and Clytia hummelincki were rare. Cluster analysis of relative abundance data revealed sandy shores had a markedly different hydroid community from other habitats. A simplified identification key, redescriptions, illustrations and data on nematocyst compliment are provided for each species. Campanularia hincksii, Clytia macrotheca and C. noliformis are reported from Brazil for the first time.

Country
Costa Rica
Related Organizations
Keywords

clytia, hydroid, campanularia, obelia, cnidome, Brazil

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green