Intra-annual activity patterns of terrestrial isopods are tempered in forest compared to open habitat

We evaluated the annual activity cycle of Nytophilus gouldi and N. geoffroyi using 82 nights of mist-netting data from a site near Armidale in northern NSW. Our purpose was to assess whether these bats hibernated or used short bouts of daily torpor combined with foraging on at least some nights. During the cold months of the year (May - August) bat activity levels inferred from net captures was very low providing support for the hypothesis that these bats use daily torpor and at least sometimes actively forage as opposed to entering hibernation.

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Activity Cycles in the Brown Trout (Salmo trutta L.): 2. Fish Artificially Fed

Journal of the Fisheries Research Board of Canada ◽

10.1139/f64-011 ◽

1964 ◽

Vol 21 (1) ◽

pp. 133-138 ◽

Cited By ~ 25

Author(s):

D. R. Swift

Keyword(s):

Brown Trout ◽

Salmo Trutta ◽

Activity Patterns ◽

Maximum Activity ◽

Locomotory Activity ◽

Prime Stimulus ◽

Brown Trout Salmo Trutta ◽

Annual Activity ◽

Activity Cycles ◽

Increased Activity

The diurnal and annual locomotory activity cycles of four brown trout confined in separate cages on the bed of Windermere and fed artificially from the lake surface are described. The annual activity curves were very similar, the fish being less active during the winter than in the summer with maximum activity occurring in June and again in August. The diurnal activity patterns were also very similar with a sharp rise in activity at dawn each day after an inactive night, the increased activity being maintained throughout the light period and falling rapidly at dusk.Two of the fish were fed daily at irregular times and two were fed automatically every 2 hr. The similarity of the activity patterns of these four fish and also the similarity to the patterns of unfed fish described in a previous paper suggests that light and not food is the prime stimulus to locomotory activity in brown trout.

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Interaction between visiting bees (Hymenoptera, Apoidea) and flowers of Ludwigia elegans (Camb.) hara (Onagraceae) during the year in two different areas in São Paulo, Brazil

Brazilian Journal of Biology ◽

10.1590/s1519-69842003000400008 ◽

2003 ◽

Vol 63 (4) ◽

pp. 617-625 ◽

Cited By ~ 4

Author(s):

M. Gimenes

Keyword(s):

Apis Mellifera ◽

Activity Patterns ◽

Sao Paulo ◽

The State ◽

São Paulo ◽

Annual Activity ◽

Specialist Bees ◽

Species Being ◽

Circannual Variation ◽

Different Altitudes

This study was designed to characterize the interactions between Ludwigia elegans flowers and visiting bees during two years in two areas 200 km apart, at the same latitude (approximately 22º48'S) but at different altitudes (Alumínio, 600 m, and Campos do Jordão, 1500 m), in the State of São Paulo, Brazil. As these flowers open simultaneously in the morning and lose their petals by sunset, interaction with bees occurs only during the photophase. Flowers of L. elegans were mainly visited by bees, the most frequent species being: Tetraglossula anthracina (Michener, 1989) (Colletidae), Rhophitulus sp. (Andrenidae), and Pseudagapostemon spp. (Halictidae), all considered specialized bees for collecting pollen and nectar from these flowers, as well as the generalist bee Apis mellifera Linnaeus, 1758 (Apidae). The specialist bees were temporally adjusted to the opening schedule of the flower, which occurs primarily in the morning, but shows a circannual variation. T. anthracina appears in both study areas, but only between December and April. The annual activity patterns of these specialist bees are synchronized to the phenology of L. elegans. Photoperiod and temperature cycles are suggested as the main synchronizers of both bees and plants.

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Seasonal and daily activity patterns of Vipera latastei in northern Portugal

Amphibia-Reptilia ◽

10.1163/156853803322763954 ◽

2003 ◽

Vol 24 (4) ◽

pp. 497-508 ◽

Cited By ~ 10

Author(s):

José Brito

Keyword(s):

Daily Activity ◽

Vas Deferens ◽

Activity Patterns ◽

Early Morning ◽

Adult Males ◽

Northern Portugal ◽

Annual Activity ◽

Activity Cycles ◽

A Minor ◽

Daily Activity Patterns

AbstractThe annual and daily activity cycles of Vipera latastei were investigated in northern Portugal from 1999 to 2001, based on field observations, radio-tracking data and road killed snakes. Annual activity was extended from early March to late October, although some snakes were active during winter. Two annual peaks of activity were observed, a minor one in March-May and a major one in September-October. The daily activity pattern of vipers in spring and autumn was unimodal, whereas in summer they expanded their activity from early morning to late afternoon, and were also active at night. Activity and body exposure of adult males were correlated with meteorological variables. Females had shedding periods in June and July, whereas males shed their skin more frequently in June and August. Sperm was detected in the vas deferens of males in October to December. Females ovulated in June and new-born vipers were found from early August. Mating season is apparently restricted to autumn, and spring mating is either absent or very reduced.

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Seasonal activity of snakes in the Atlantic forest in southeastern Brazil

Amphibia-Reptilia ◽

10.1163/156853801750096213 ◽

2001 ◽

Vol 22 (1) ◽

pp. 103-111 ◽

Cited By ~ 38

Author(s):

André Eterovic ◽

Otavio Marques ◽

Whaldener Endo

Keyword(s):

Atlantic Forest ◽

Activity Patterns ◽

Climatic Conditions ◽

Seasonal Abundance ◽

Southeastern Brazil ◽

Seasonal Activity ◽

Collection Data ◽

Annual Activity ◽

Main Factors ◽

Number Of Individuals

AbstractSeasonal abundance of some snake species from the Atlantic forest in southeastern Brazil was inferred from collection data gathered throughout twelve years at the Instituto Butantan in São Paulo, Brazil. The number of collected individuals of Chironius spp., Liophis miliaris, Spilotes pullatus, Tropidodryas spp., Micrurus corallinus, and Bothrops jararaca was significantly higher during the rainy season, whereas the number of Sibynomorphus neuwiedi was higher during the dry season. Erythrolamprus aesculapii, Xenodon neuwiedii, Tomodon dorsatus and Bothrops jararacussu did not show significant differences in the number of individuals collected at each of these seasons. Seasonality in captures may result from seasonal activity patterns. Food availability, tolerance to climatic conditions, reproductive cycle, and phylogenetic constraints are considered the main factors responsible for the observed patterns. A multivariate approach is recommended for analysis of annual activity.

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Tadpole transport in relation to rainfall, fecundity and body size in five species of poison-dart frogs from Amazonian Peru

Amphibia-Reptilia ◽

10.1163/156853891x00329 ◽

1991 ◽

Vol 12 (1) ◽

pp. 49-55 ◽

Cited By ~ 19

Author(s):

Manfred Aichinger

Keyword(s):

Body Size ◽

Mortality Rate ◽

Rainy Season ◽

Activity Patterns ◽

Lower Number ◽

Larval Transport ◽

Annual Activity ◽

Tadpole Transport

AbstractDuring a study on annual activity patterns of anurans at a neotropical study site (Aichinger, 1987a) additional observations on tadpole carrying poison-dart frogs were made. Seventy-four individuals representing five species, Colostethus marchesianus, Dendrobates quinquevittatus, Epipedobates femoralis, E. pictus, and E. trivittatus (generic names follow Myers, 1987), were observed during larval transport. Eighty-nine percent transported their larvae immediately after rain showers. In 1981 and 1985 seventy-eight percent of the observations were made on two days at the beginning of the rainy season. There was no relation between snout-vent length (SVL) of adults and number of tadpoles carried. In Colostethus marchesianus and Epipedobates pictus the number of ovarian eggs increased significantly with increasing SVL. The number of ovarian eggs is compared with the number of tadpoles carried. In Epipedobates spp. the remarkably lower number of tadpoles carried (X = 25.9 % ) may be due to the mortality rate of the larvae. The number of transported tadpoles in C. marchesianus exceeded the number of ovarian eggs by up to 89 % . It is supposed that C. marchesianus may carry the hatched tadpoles of two clutches.

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Annual activity patterns of anurans in a seasonal neotropical environment

Oecologia ◽

10.1007/bf00379302 ◽

1987 ◽

Vol 71 (4) ◽

pp. 583-592 ◽

Cited By ~ 110

Author(s):

M. Aichinger

Keyword(s):

Activity Patterns ◽

Annual Activity

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Observations of daytime activity in the nocturnal northern giant mouse lemur (Mirza zaza)

Behaviour ◽

10.1163/1568539x-bja10054 ◽

2020 ◽

Vol 158 (1) ◽

pp. 69-76

Author(s):

Daniel Hending ◽

Heriniaina Randrianarison ◽

Sam Cotton ◽

Marc Holderied ◽

Grainne McCabe

Keyword(s):

Activity Patterns ◽

Activity Cycle ◽

Dry Season ◽

Mouse Lemur ◽

Daytime Activity ◽

Annual Activity ◽

Long Term Studies

Abstract We provide an anecdote of daytime activity within the northern giant mouse lemur (Mirza zaza), a small threatened primate that has always been considered strictly nocturnal, in the Anabohazo forest of northwestern Madagascar. During the dry season, we witnessed two individual M. zaza travelling separately in the afternoon period of three different days. Our observations indicate that M. zaza may undertake activity that is essential for their survival within both the light and dark periods of a day-cycle, and our findings suggest that the activity cycle of this species may be highly flexible. These observations have important implications to understand the evolution of activity patterns in M. zaza, and these findings warrant future, long term studies to establish the annual activity patterns of M. zaza and to determine whether this species is potentially cathemeral and why.

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