Temporal variation in Sargassum Biomass, Hypnea epiphytism and associated fauna

Leite, Fosca Pedini Pereira; Turra, Alexander

doi:10.1590/s1516-89132003000400021

Cited by 61 publications

(79 citation statements)

References 30 publications

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“…Studies have shown that algal biomass may be a measure of its complexity, since higher values of biomass may be related to increased living space, food availability and protection from predators, favoring epiphytic species richness and abundance (HECK & WETSTONE 1977, STONER 1980, LEITE & TURRA 2003. Despite this, in this study S. cymosum biomass was not related to hydroid species richness.…”

Section: Discussioncontrasting

confidence: 55%

Seasonal variation of epiphytic hydroids (Cnidaria: Hydrozoa) associated to a subtropical Sargassum cymosum (Phaeophyta: Fucales) bed

Cunha

Jacobucci²

2010

Zoologia (Curitiba, Impr.)

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ABSTRACT. Hydroids are broadly reported in epiphytic associations from different localities showing marked seasonal cycles. Studies have shown that the factors behind these seasonal differences in hydroid richness and abundance may vary significantly according to the area of study. Seasonal differences in epiphytic hydroid cover and richness were evaluated in a Sargassum cymosum C. Agardh bed from Lázaro beach, at Ubatuba, Brazil. Significant seasonal differences were found in total hydroid cover, but not in species richness. Hydroid cover increased from March (early fall) to February (summer). Most of this pattern was caused by two of the most abundant species: Aglaophenia latecarinata Allman, 1877 and Orthopyxis sargassicola (Nutting, 1915). Hydroid richness seems to be related to S. cymosum size but not directly to its biomass. The seasonal differences in hydroid richness and algal cover are shown to be similar to other works in the study region and in the Mediterranean. Seasonal recruitment of hydroid species larvae may be responsible for their seasonal differences in algal cover, although other factors such as grazing activity of gammarid amphipods on S. cymosum must be taken into account. KEY WORDS. Epibionts; hydroid cover; hydrozoans.

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Section: Discussioncontrasting

confidence: 55%

Seasonal variation of epiphytic hydroids (Cnidaria: Hydrozoa) associated to a subtropical Sargassum cymosum (Phaeophyta: Fucales) bed

Cunha

Jacobucci²

2010

Zoologia (Curitiba, Impr.)

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“…Sessile epibiont organisms such as hydrozoans, sponges and particularly epiphytic algae influence the abundance and diversity of phytal fauna (Kangas, 1978;Leite & Turra, 2003), because they increase the complexity of the macrophytes on which they develop (Bell et al, 1984;Hall & Bell, 1988).…”

Section: Introductionmentioning

confidence: 99%

“…This structural variation can determine differences in the composition and relative abundance of epiphytic algae and of the associated epifauna (Jacobucci et al, 2009). Among the organisms of the macro-epifauna whose occurrence can be influenced by the presence of epiphytes in Sargassum fronds, there are various species of amphipods (Norton & Benson, 1983;Martin-Smith, 1993;Viejo, 1999;Leite & Turra, 2003), some of which utilize algae not only as refuge, but also as a food resource. This is the case with gammarid amphipods of the families Ampithoidae and Hyalidae, for which there are reports of the utilization of epiphytes and Sargassum (Zimmerman et al, 1979;Duffy, 1990;Duffy & Hay, 1994).…”

Section: Introductionmentioning

confidence: 99%

The role of epiphytic algae and different species of Sargassum in the distribution and feeding of herbivorous amphipods

Jacobucci¹,

Pereira-Leite²

2014

lajar

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ABSTRACT. The presence of particular algal species can directly influence the distribution and abundance of mesoherbivores. The aim of this study was to answer the following questions: Do Sargassum beds of different localities show variation in the load of epiphytic algae? Do Sargassum beds of different localities show variation in the density of herbivore amphipods? Does the density of these amphipods in the same algal bed vary with epiphyte load? Are species of Sargassum and their epiphytes equally consumed by amphipods? The collections were carried out in three infralitoral algal beds in southeastern Brazil. Fronds of Sargassum were collected at each algal bed and the associated ampithoid and hyalid amphipods were separated, identified and counted. Sargassum fronds and epiphytes were identified, dryed and weighted. Experiments were carried out to determine the consumption of Sargassum species and epiphytes by amphipods. The weight of the epiphytes Hypnea musciformis and Dyctiopteris delicatula and the density of amphipods were different among sampling sites. There was a relationship between amphipod density and epiphyte weight at two sampling sites. The four amphipod species tested consumed algae, but showed different patterns of consumption. Despite consuming the epiphytes, the ampithoids preferentially feed on the three species of Sargassum, while Hyale nigra had a preference for Hypnea musciformis.

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“…This only record was thought to be due to its occasional presence associated with seasonality and abundance of Sargassum sp. The density of Hippolyte obliquimanus is higher in autumn-winter periods in association with these algae , which also influence variations in abundance of many caridean shrimp species (Leite and Turra 2003). The decrease in abundance of Sargassum sp.…”

Section: Discussionmentioning

confidence: 99%

Updated checklist of estuarine caridean shrimps (Decapoda: Caridea) from the southern region of Laguna Madre, Tamaulipas, Mexico, with new records and a key for taxonomic identification

Herrera-Barquín¹,

Leija-Tristán²,

Lara³

2018

CheckList

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We provide an updated list of the caridean shrimp species from the southern region of the Laguna Madre, Tamaulipas, Mexico, along with a key for taxonomic identification. The survey was conducted in 3 sites during 3 temporal seasons. A total of 2,989 specimens were collected belonging to 12 species, 6 genera, and to the following 4 families: Alpheidae, Hippolytidae, Palaemonidae, and Processidae. Hippolytidae was the most abundant family, followed by Palaemonidae, Alpheidae, and Processidae. The hippolytid Hippolyte obliquimanus Dana, 1852, the palaemonids Palaemon floridanus Chace, 1942, and P. northropi (Rankin, 1898), and the alpheid Alpheus cf. packardii Kingsley, 1880 represent new records for the Laguna Madre and selected areas of the Gulf of Mexico.

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Temporal variation in Sargassum Biomass, Hypnea epiphytism and associated fauna

Abstract: Studies were carried out to investigate the temporal variation in

Cited by 61 publications

References 30 publications

Seasonal variation of epiphytic hydroids (Cnidaria: Hydrozoa) associated to a subtropical Sargassum cymosum (Phaeophyta: Fucales) bed

Seasonal variation of epiphytic hydroids (Cnidaria: Hydrozoa) associated to a subtropical Sargassum cymosum (Phaeophyta: Fucales) bed

The role of epiphytic algae and different species of Sargassum in the distribution and feeding of herbivorous amphipods

Updated checklist of estuarine caridean shrimps (Decapoda: Caridea) from the southern region of Laguna Madre, Tamaulipas, Mexico, with new records and a key for taxonomic identification

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