Gelatinous zooplankton (ctenophores, salps and medusae): an important food resource of fishes in the temperate SW Atlantic Ocean

This study provides the first assessment of the diet of the yellow-bellied glider (Petaurus australis) in the south-west portion of its range near the Victorian–South Australian border. Examining its diet in this region is viewed as being fundamental to understanding the ecological requirements of the species. Observations were conducted over a five-year period on gliders from five distinct groups. Sap was the most important food item throughout the year and accounted for 83% of 407 feeding observations. Each group of gliders used up to 21 different trees for sap, but during any sample period only 1–8 trees were used. This represents a vastly different pattern of use of sap trees to that described in any earlier study. Some trees were visited more often than others, and these tended to be heavily scarred, indicating use over many years. Other food types were arthropods and honeydew and, to a lesser extent, nectar. This study also revealed that the yellow- bellied glider is not dependent on a diversity of tree species nor on a winter-flowering species. We provide a review of the diet of the yellow-bellied glider throughout its range. This shows that the yellow-bellied glider is reliant on sap as a food resource but particularly so at both ends of its geographic range. The reason for this is unclear, but there is definitely a need for further study of sap-flow patterns in eucalypts.

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Spatio-Temporal Changes in Basal Food Source Assimilation by Fish Assemblages in a Large Tropical Bay in the SW Atlantic Ocean

Estuaries and Coasts ◽

10.1007/s12237-020-00716-1 ◽

2020 ◽

Vol 43 (4) ◽

pp. 894-908

Author(s):

Edjane Pereira Santos ◽

Mario Vinicius Condini ◽

Alexandre Clistenes Alcântara Santos ◽

Heiddy Marquez Alvarez ◽

Leonardo Evangelista de Moraes ◽

...

Keyword(s):

Atlantic Ocean ◽

Food Source ◽

Fish Assemblages ◽

Temporal Changes ◽

Sw Atlantic ◽

Spatio Temporal ◽

Tropical Bay

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Diel vertical distribution of the larvaceanOikopleura dioicain a North Patagonian tidal frontal system (42°–45°S) of the SW Atlantic Ocean

Marine Biology Research ◽

10.1080/17451000.2014.978338 ◽

2015 ◽

Vol 11 (6) ◽

pp. 633-643 ◽

Cited By ~ 4

Author(s):

Mariela Spinelli ◽

Carla Derisio ◽

Patricia Martos ◽

Marcelo Pájaro ◽

Graciela Esnal ◽

...

Keyword(s):

Atlantic Ocean ◽

Vertical Distribution ◽

Frontal System ◽

Sw Atlantic ◽

Diel Vertical Distribution

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Description of Antho (Plocamia) bremecae sp. nov. and checklist of Microcionidae (Demospongiae: Poecilosclerida) from Burdwood Bank and neighboring areas, SW Atlantic Ocean

Zootaxa ◽

10.11646/zootaxa.4312.3.11 ◽

2017 ◽

Vol 4312 (3) ◽

pp. 580 ◽

Cited By ~ 3

Author(s):

SCHEJTER LAURA ◽

BERTOLINO MARCO ◽

CALCINAI BARBARA

Keyword(s):

Atlantic Ocean ◽

Tierra Del Fuego ◽

Falkland Islands ◽

The West ◽

South Georgia ◽

The North ◽

Sw Atlantic ◽

Scotia Arc ◽

First Time ◽

Burdwood Bank

In this contribution, we describe a new Demospongiae species, Antho (Plocamia) bremecae sp. nov., from the west slope of Burdwood bank, a poorly studied region in the SW Atlantic Ocean. We also recorded for the first time in the region two other microcionid species, Clathria (Axosuberites) nidificata and Clathria (Microciona) antarctica. In addition, a regional checklist of Microcionidae from Burdwood Bank and neighboring areas, including Malvinas (Falkland) Islands, Tierra del Fuego Province and the North of the Scotia Arc (South Georgia and Shag Rocks) is provided.

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A functional classification of the drift: traits that influence invertebrate availability to salmonids

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f97-025 ◽

1997 ◽

Vol 54 (6) ◽

pp. 1211-1234 ◽

Cited By ~ 116

Author(s):

Russell B Rader

Keyword(s):

Rocky Mountains ◽

Aquatic Invertebrates ◽

Food Resource ◽

Trophic Levels ◽

Functional Classification ◽

Invertebrate Community ◽

Important Food ◽

Stream Invertebrates ◽

Central Rocky Mountains

Twelve categories/traits were used to classify and rank aquatic invertebrates based on their propensity to drift and importance as a food resource for salmonids. Invertebrate availability was based on their (i) propensity to intentionally drift, (ii) likelihood of being accidentally dislodged by the current, (iii) drift distance, (iv) adult drift, (v) benthic exposure, (vi) body size, and (vii) abundance. This study represents the first attempt to characterize the intentional drift propensity of stream invertebrates. A ranking procedure separated invertebrates into Baetis and three groups decreasing in availability. Predicted ranks were significantly correlated with the actual rank of invertebrates in trout guts taken in three separate studies conducted in the central Rocky Mountains, suggesting that this procedure can effectively rank invertebrates based on their availability as a food resource for salmonids. A cluster analysis separated the 95 taxa into four drift guilds and six availability groups. This study provides criteria for determining when alterations in invertebrate community composition will affect food resources for higher trophic levels by causing a decline in the most available taxa. This research also supports previous findings that floods are important in maintaining invertebrates that represent an important food resource for salmonids.

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Frugivory and seed dispersal by the yellow-throated marten, Martes flavigula, in a subtropical forest of China

Journal of Tropical Ecology ◽

10.1017/s0266467408004793 ◽

2008 ◽

Vol 24 (2) ◽

pp. 219-223 ◽

Cited By ~ 18

Author(s):

You-Bing Zhou ◽

Eleanor Slade ◽

Chris Newman ◽

Xiao-Ming Wang ◽

Shu-Yi Zhang

Keyword(s):

Seed Dispersal ◽

Habitat Use ◽

Tropical Forests ◽

Systematic Study ◽

Food Resource ◽

Subtropical Forest ◽

Geographical Range ◽

Important Food ◽

Living Species ◽

Comprehensive Study

The yellow-throated marten, Martes flavigula, is the only living species of the genus Martes found in subtropical and tropical forests (Harrison et al. 2004). It is distributed throughout central and southern Asia in a wide variety of habitats. Despite its extensive geographical range, the ecology and behaviour of this species has so far received little attention, aside from a study of habitat use (Grassman et al. 2005). Studies on other martens have shown that fruits are an important food resource (e.g. M. martes, Bermejo & Guitian 2000; M. foina, Pandolfi et al. 1996). Thus, they are considered to be important potential seed dispersers (Corlett 1998, Herrera 1989, Willson 1993), as confirmed by recent studies (M. melampus, Otani 2002; M. americana, Hickey et al. 1999; M. foina and M. martes, Schaumann & Heinken 2002). Although no systematic study of the diet of M. flavigula has been conducted (Harrison et al. 2004), it is known to be omnivorous and to consume fruit (Gao & Wang 1987). To date, however, there has been no comprehensive study of frugivory and seed dispersal by M. flavigula (but see Corlett 1998).

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Morphological and molecular characterization of the toxic dinoflagellate Ostreopsis cf. ovata (Dinophyta) from Brazil (South Atlantic Ocean)

Revista de Biología Tropical ◽

10.15517/rbt.v65i3.29436 ◽

2017 ◽

Vol 65 (3) ◽

pp. 1022 ◽

Cited By ~ 4

Author(s):

Fernando Gómez ◽

Dajun Qiu ◽

Rubens M. Lopes ◽

Senjie Lin

Keyword(s):

Atlantic Ocean ◽

Mediterranean Sea ◽

Current Knowledge ◽

Molecular Data ◽

Resolving Power ◽

Lsu Rdna ◽

Rrna Gene ◽

Cell Dimensions ◽

Sw Atlantic ◽

The Mediterranean

Ostreopsis cf. ovata is a toxic epiphytic dinoflagellate widely distributed in warm waters that often co-occur with species of the genera Coolia, Fukuyoa, Gambierdiscus and Prorocentrum. We investigated a strain isolated from the coast of Ubatuba, Brazil (South-West Atlantic Ocean) by light and epifluorescence microscopies; we also report molecular data based on the LSU rDNA and ITS markers. Cells were 35-65 µm in the dorso-ventral diameter and 20-40 µm wide. We obtained the sequence of a ~1900 base pair region of the rRNA gene cistron. In the LSU rDNA phylogeny, the sequences under the names O. ovata and O. cf. ovata branched into three clades. The ITS marker showed greater resolving power and the sequences of O. ovata/O. cf. ovata split into five clades. Our ITS sequence branched in a clade with sequences of strains from the Mediterranean Sea, European Atlantic coasts, subtropical NE Atlantic, other sequences from Brazil at Rio de Janeiro, and a few sequences from Japan. The cell dimensions and thecal plate arrangement were under the variability range reported in other ocean regions. Our observations confirm O. cf. ovata as the most commonly recorded species of Ostreopsis in the SW Atlantic Ocean. Ostreopsis cf. ovata co-occurred with Coolia malayensis in Brazil and Asia, but it has been commonly reported from the Mediterranean Sea, where C. malayensis has not yet been recorded; while Coolia malayensis has been reported from the Caribbean Sea, but not O. ovata. With the current knowledge, it is difficult to understand the factors that determine the biogeography of the tropical epiphytic dinoflagellates.

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