Do allochthonous inputs represent an important food resource for benthic macrofaunal communities in tropical estuarine mudflats?

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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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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New genus of the tribe Ceutorhynchini (Coleoptera: Curculionidae) from the late Oligocene of Enspel, southwestern Germany, with a remark on the role of weevils in the ancient food web

Fossil Record ◽

10.5194/fr-23-197-2020 ◽

2020 ◽

Vol 23 (2) ◽

pp. 197-204

Author(s):

Andrei A. Legalov ◽

Markus J. Poschmann

Keyword(s):

Food Web ◽

Type Species ◽

Anterior Margin ◽

New Genus ◽

Food Resource ◽

Cyprinid Fish ◽

Late Oligocene ◽

Important Food ◽

Ancient Food

Abstract. The new weevil genus Igneonasus gen. nov. (type species: I. rudolphi sp. nov.) of the tribe Ceutorhynchini (Curculionidae: Conoderinae: Ceutorhynchitae) is described from the late Oligocene of Fossillagerstätte Enspel, Germany. The new genus differs from the similar genus Stenocarus Thomson, 1859 in the anterior margin of the pronotum, which is not raised, a pronotum without tubercles on the sides, and a femur without teeth. This weevil is the largest representative of this supertribe and the first fossil Curculionidae species described from the paleolake Enspel. In this ancient ecosystem, weevils were at least sometimes an important food resource for the cyprinid fish Palaeorutilus enspelensis.

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Food resource utilization of the skates Rioraja agassizii (Müller & Henle, 1841) and Psammobatis extenta (Garman, 1913) on the continental shelf off Ubatuba, South-eastern Brazil

Revista Brasileira de Biologia ◽

10.1590/s0034-71082001000200005 ◽

2001 ◽

Vol 61 (2) ◽

pp. 217-238 ◽

Cited By ~ 47

Author(s):

E. Y. MUTO ◽

L. S. H. SOARES ◽

R. GOITEIN

Keyword(s):

Feeding Habits ◽

Food Resource ◽

Stomach Content Analysis ◽

Brazilian Coast ◽

Relative Importance ◽

Important Food ◽

South Eastern ◽

Eastern Brazil ◽

Index Of Relative Importance ◽

Food Resource Utilization

The feeding habits of Rioraja agassizii (syn. Raja agassizii) and Psammobatis extenta (syn. Psammobatis glansdissimilis) of the South-eastern Brazilian coast were studied by means of stomach content analysis. The samples were obtained on eight seasonal oceanographic cruises, carried out between October 1985 and July 1987. The importance of each food item was evaluated on the basis of the Index of Relative Importance and the feeding similarity by Percentage of Similarity. The results indicated that both species are benthic feeders, preying mainly on Crustacea, especially Amphipoda, Caridea and Brachyura. Teleostei were also important for R. agassizii. Seasonal variation of the diet seems to be associated with the availability of the prey, whose distribution and abundance are related to the dynamics of the water masses of the region. Juveniles and adults of P. extenta exploited the same resources while juveniles and adults of R. agassizii presented low diet similarity during most of the year. Caridea were an important food for all length classes of R. agassizii, while Amphipoda were for smaller specimens, and Teleostei for larger ones. The feeding overlap between the two species was higher during autumn 1986, winter 1986 and winter 1987.

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The cottonwood mushroom (Tricholoma populinum): a food resource of the Interior Salish Indian peoples of British Columbia

Canadian Journal of Botany ◽

10.1139/b87-127 ◽

1987 ◽

Vol 65 (5) ◽

pp. 921-927 ◽

Cited By ~ 10

Author(s):

Nancy J. Turner ◽

Harriet V. Kuhnlein ◽

Keith N. Egger

Keyword(s):

British Columbia ◽

Food Source ◽

Food Resource ◽

Edible Mushroom ◽

Native People ◽

Important Food ◽

Mushroom Species ◽

Important Food Source ◽

Interior Salish ◽

First Time

Tricholoma populinum Lange is identified for the first time as one of the edible mushroom species traditionally eaten by Interior Salish Indian peoples of British Columbia. A description of this species is given, and harvesting and preparation information is provided based on its use by contemporary Native people. Nutrient composition data are also reported. This mushroom continues to be an important food source for some Native people in British Columbia.

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Seasonal occurrence of arthropods as a source of food for birds in Finnish Lapland

Entomologica Fennica ◽

10.33338/ef.83855 ◽

1995 ◽

Vol 6 (2-3) ◽

pp. 177-181 ◽

Cited By ~ 6

Author(s):

Simo Veistola ◽

Tapio Eeva ◽

Esa Lehikoinen

Keyword(s):

Food Resource ◽

Late Summer ◽

Point Of View ◽

Seasonal Occurrence ◽

Important Food ◽

Finnish Lapland ◽

Abundance Peak ◽

Abundant Taxon ◽

Arthropod Abundance

The seasonal occurrence in arthropod abundance was studied in Utsjoki, northernmost Finland, from the viewpoint that arthropods form an important food resource for birds. On ground surfaces, Araneae was the most abundant taxon. The abundance peak of spiders occurred in June. Diptera, which was the dominant taxon in samples collected from dwarf shrubs, had their dominance peak in July. In birch foliage, Homoptera and Coleoptera were most common in June, but lepidopteran and symphytan larvae dominated in late summer. The larvae in pines (Symphyta; Diprionidae and Pamphiliidae) also had their abundance peak in autumn. The role of predation in the seasonality is discussed from the point-of-view of both birds and arthropods.

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Long-nosed potoroo (Potorous tridactylus) behaviour and handling times when foraging for buried truffles

Australian Mammalogy ◽

10.1071/am13037 ◽

2014 ◽

Vol 36 (1) ◽

pp. 128 ◽

Cited By ~ 12

Author(s):

Karl Vernes ◽

Peter Jarman

Keyword(s):

Small Mammals ◽

Food Resource ◽

Camera Traps ◽

Important Food ◽

In The Wild ◽

Rate Of Recovery ◽

Potorous Tridactylus

Truffles represent an important food resource for many small mammals, but because most mycophagous mammals are difficult to observe in the wild, behavioural observations of mammals handling and consuming truffles are almost non-existent. Using camera traps, we observed the behaviour of long-nosed potoroos (Potorous tridactylus) foraging for buried truffles, and recorded the rate at which truffles were excavated and consumed. Potoroos excavated buried truffles rapidly (2.4 ± 0.2 s) with synchronous drawing strokes of their forepaws, then gathered the excavated truffles with forepaws and/or mouth and cleaned away adherent debris before consuming the truffle. When potoroos were unsuccessful at recovering a truffle, they spent significantly more time digging (4.8 ± 0.6 s) before giving up. Potoroos were successful at recovering a truffle in 76% of digging attempts, and once they had located a cache of buried truffles, achieved a rate of recovery of ~2.4 truffles per minute.

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The occurrence of heterophyid metacercariae in a stream linked aquatic reservoirs, Southeast Nigeria

Brazilian Journal of Biological Sciences ◽

10.21472/bjbs.030509 ◽

2016 ◽

Vol 3 (5) ◽

pp. 105

Author(s):

Paul Chinedu Echi ◽

Victoria Chimuanya Ezeala

Keyword(s):

Clarias Gariepinus ◽

Parasitic Infection ◽

Food Resource ◽

Parasitic Infections ◽

Physical Factors ◽

Dam Construction ◽

Important Food ◽

Health Concerns ◽

Tilapia Zillii ◽

Gill Parasites

The study of teleost parasites in an ecologically altered ecosystem through dam construction that evidently facilitate parasitic infections and aggravate public health concerns is essential. The study of stream linked dam showed that Tilapia zillii (Gervais, 1848), Pelmatolapia mariae (Boulenger, 1899) and Clarias gariepinus (Burchell, 1822) form the major fish composition of these reservoirs. They serve important food resource globally especially places bereft of extensive aquaculture practices. Although, knowledge about the gill parasites of P. mariae is inexistent the examined individual P. mariae showed that it had 54% Heterophyes heterophyes infection, C. gariepinus had no parasitic infection whereas T. zillii had a relatively very low Batrachobdelloides spp (1.7%). Besides, the highest DO levels in the dam occasioned by high agitation and floatation the physical factors conditions - pH and DO (> 6 mg.L^-1) had suitable levels for biodiversity.

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