scholarly journals Site Fidelity, Associations and Long-Term Bonds of Short-Finned Pilot Whales off the Island of Hawai`i

2000 ◽  
Author(s):  
Sabre Mahaffy
Keyword(s):  
Site Fidelity ◽  
Pilot Whales

High site fidelity, strong associations, and long‐term bonds: Short‐finned pilot whales off the island of Hawai‘i

2015 ◽  
Vol 31 (4) ◽  
pp. 1427-1451 ◽  
Author(s):  
Sabre D. Mahaffy ◽  
Robin W. Baird ◽  
Daniel J. McSweeney ◽  
Daniel L. Webster ◽  
Gregory S. Schorr
Keyword(s):  
Site Fidelity ◽  
High Site ◽  
Pilot Whales

scholarly journals Long-term individual foraging site fidelity—why some gannets don't change their spots

Ecology ◽  
2015 ◽  
Vol 96 (11) ◽  
pp. 3058-3074 ◽  
Author(s):  
Ewan D. Wakefield ◽  
Ian R. Cleasby ◽  
Stuart Bearhop ◽  
Thomas W. Bodey ◽  
Rachel D. Davies ◽  
...  
Keyword(s):  
Site Fidelity ◽  
Foraging Site

Conservation of the Swift Parrot Lathamus discolor ? management lessons for a threatened migratory species

2007 ◽  
Vol 13 (2) ◽  
pp. 111 ◽  
Author(s):  
Debbie Saunders ◽  
Raymond Brereton ◽  
Chris Tzaros ◽  
Mark Holdsworth ◽  
Rob Price
Keyword(s):  
Site Fidelity ◽  
Bird Species ◽  
Migratory Bird ◽  
Small Population ◽  
Assessment Process ◽  
Migratory Species ◽  
Conservation Assessment ◽  
Broad Distribution ◽  
Large Numbers

Conserving habitat for wide-ranging fauna species provides a challenge because impacts on these species tend to be dismissed based on the assumption that there is sufficient habitat in other areas of its range. This incremental loss of habitat is a serious conservation issue for a diversity of bird species. As knowledge of wide-ranging and migratory bird species increases, it often becomes evident that they select specific sites on a regular basis (i.e., the species exhibit site fidelity). Gaining a better understanding of site fidelity and selective habitat use for wide-ranging species is clearly important, but also extremely challenging. In this paper, challenges associated with conservation of the migratory and wide-ranging Swift Parrot Lathamus discolor are discussed as an example of how a recovery programme has aimed to address such conservation and management challenges. Despite the small population size (less than 2 500 birds), broad distribution (1 250 000 km2) and often cryptic nature, the implementation of the national recovery programme has been successful in the identification and protection of important habitats. This has been made possible by involving large numbers of volunteers who collect long-term sighting and habitat data over large areas, together with more detailed ecological research. This information is then used to inform the conservation assessment process and to improve habitat conservation throughout the range of the species.

Conservation, Ecology, and Management of Catfish: The Second International Symposium

2011 ◽  
Keyword(s):  
Site Fidelity ◽  
Late Summer ◽  
High Survival ◽  
Population Abundance ◽  
Conservation Ecology ◽  
Temporary Emigration ◽  
Minnesota River ◽  
Flathead Catfish ◽  
High Site

<em>Abstract</em>.—The flathead catfish <em>Pylodictis olivaris</em> is one of the most important game fishes in the lower Minnesota River, providing a high-quality angling fishery. Information on flathead catfish movements and site fidelity in the Minnesota River at the reach scale is needed before fisheries managers consider options such as reach-specific fishing regulations. In addition, this information is necessary to determine if estimates of population abundance are feasible and what study design is most appropriate. Therefore, 18 radio- and acoustic-tagged adult flathead catfish were manually located in the lower Minnesota River during late summer and fall in 2008 and 2009. Most fish remained within about 2 km of their capture locations during daylight hours in August–September 2008. However, 17% of the fish emigrated from the 9.3-km study reach before the end of September, and all emigrated by the end of October. Fourteen (78%) of the original 18 fish survived and were present in the study reach again during August–September 2009. High site fidelity could result in heterogeneous vulnerability to late-summer angling among river reaches if some individual fish consistently return to areas frequented by anglers and others return to more remote and relatively inaccessible areas. Due to high survival and late-summer site fidelity, the potential exists for high recapture probabilities with repeated late-summer mark–recapture sampling in the same study reach; however, there is evidence that temporary emigration could be an important issue in long-term studies.

Spatial structure of harbour seal populations and the implications thereof

2001 ◽  
Vol 79 (12) ◽  
pp. 2115-2127 ◽  
Author(s):  
T Härkönen ◽  
K C Harding
Keyword(s):  
Population Dynamics ◽  
Site Fidelity ◽  
Phoca Vitulina ◽  
Population Increase ◽  
Dynamic Processes ◽  
Term Study ◽  
Long Term Study ◽  
Harbour Seals ◽  
Age And Sex

A long-term study of freeze-branded harbour seals (Phoca vitulina) revealed explicit site fidelity. Individuals were followed up to 14 years of age and none of the 163 branded animals were observed to haul out beyond a 32-km distance from the site where they were branded as pups. Within this range, striking spatial segregation by age and sex prevailed. While females' site fidelity increased with age, males spent less time at their natal site with increasing age. These findings have consequences for understanding the population dynamics of harbour seals, since single "colonies" will act as partly isolated "subpopulations" in some contexts but not in others. The differing migration tendencies of the population segments lead to spatially segregated sex and age ratios of subpopulations and create a complex pattern of connectivity among these subpopulations. Ignoring the spatial scale will lead to severe misinterpretations of analyses of basic population-dynamic processes, especially rates of population increase, rates of gene flow, and the dynamics of the spread of diseases. We suggest that when studies have different aims, these should be addressed by encompassing different numbers of subpopulations.

Monitoring the effect of habitat loss on life-cycle aspects of the Masked Owl Tyto novaehollandiae in a semi-urban landscape

2020 ◽  
Vol 40 (4) ◽  
pp. 565-574
Author(s):  
Chris N. Thomson
Keyword(s):  
Site Fidelity ◽  
Large Scale ◽  
Urban Landscape ◽  
Negative Impact ◽  
Urban Expansion ◽  
Short Term ◽  
Breeding Activity ◽  
Breeding Territory ◽  
Term Monitoring

Long-term monitoring of the Masked Owl Tyto novaehollandiae in a semi-urban landscape before, during and after large-scale habitat removal identified a positive response in breeding activity in the short-term and a change in prey selectivity. Over the longer term, the loss in habitat had a negative impact on site fidelity. A pair of Masked Owls exhibited high fidelity to a particular breeding territory before and during the removal of large areas of habitat within this territory. Breeding success occurred over two consecutive seasons during the removal of known habitat and other disturbance events at which time the pair and their offspring were observed to exploit disturbed habitat and newly created forest edges in search of prey. Breeding activity was supported by an increased dietary focus on introduced rodents and other mammals displaced during habitat clearing. Fidelity to the breeding territory became more irregular post-disturbance and after two years the territory appeared to be abandoned. This response may suggest that the cumulative loss of habitat for established pairs as a result of urban expansion is likely to adversely affect reproductive success and site fidelity in the longer term.

Inshore and offshore bottlenose dolphin (Tursiops truncatus) communities distinguished by association patterns near Grand Bahama Island, Bahamas

1999 ◽  
Vol 77 (4) ◽  
pp. 581-592 ◽  
Author(s):  
Kelly A Rossbach ◽  
Denise L Herzing
Keyword(s):  
Bottlenose Dolphin ◽  
Tursiops Truncatus ◽  
Site Fidelity ◽  
Bottlenose Dolphins ◽  
Social Groups ◽  
Foraging Strategies ◽  
Association Patterns ◽  
Simple Ratio ◽  
Water Depths

Little is known about the behavior of offshore dolphin populations. Our purpose was to distinguish and describe stable social groups of bottlenose dolphins (Tursiops truncatus) between inshore and offshore West End, Grand Bahama Island (26°42'N, 79°00'W). Photoidentification was conducted from May to September, 1994 to 1996. A simple ratio index described association patterns between dolphins. Multidimensional scaling of association indices (n = 1711 dolphin pairs) distinguished two dolphin communities consisting of 28 dolphins (19 of known sex) found inshore and 15 dolphins (12 of known sex) found greater than or equal to 27 km offshore. Eight of the 15 offshore dolphins were opportunistically photographed in the same region between 1986 and 1990. The two communities were found at different water depths (Mann-Whitney U test, p < 0.01), over distinct bottom types (Kruskal-Wallis test, p < 0.01), and used different bottom-foraging strategies. Long-term site fidelity of up to 10 years and repeated dolphin associations of up to 8 years occurred greater than or equal to 27 km from shore. Dolphins sighted greater than or equal to 15 times averaged 48 associates (SD = 11, n = 28). A dolphin's closest associate was of the same gender 74% of the time. This study is the first to report long-term site fidelity and association patterns of bottlenose dolphins found far from shore.

Larger lizards live longer in the group-living Egernia stokesii

2016 ◽  
Vol 64 (3) ◽  
pp. 182 ◽  
Author(s):  
S. K. Pearson ◽  
S. S. Godfrey ◽  
C. M. Bull ◽  
M. G. Gardner
Keyword(s):  
Site Fidelity ◽  
Group Living ◽  
Space Use ◽  
Limited Attention ◽  
Field Surveys ◽  
Evolution Of Sociality ◽  
Short Period ◽  
Recent Attention ◽  
Egernia Stokesii

Animal space use has implications for gene flow, disease dynamics, mating systems and the evolution of sociality. Given recent attention to sociality in reptiles, lizards are an important group for expanding our understanding of animal space use. Lizard space use is commonly investigated within one population over a short period and limited attention has been given to potential predictors of site fidelity. This study evaluated site fidelity in three populations of group-living Egernia stokesii (gidgee skink) between two field surveys separated by almost a decade. Of 43 recaptured lizards, 28 (65%) occupied their original space, and 15 (36%) of those shared their space with the same other lizard or lizards in both surveys. This confirmed long-term site and social bond fidelity in E. stokesii. We found that larger lizards were more likely to be recaptured. Neither body size, individual genetic heterozygosity, nor the availability of refuges strongly predicted whether lizards were recaptured in the same or a different place. The reasons why some lizards stayed in the same space while others moved are yet to be resolved.

The effect of familiarity and mound condition in translocations of the western pebble-mound mouse, Pseudomys chapmani, in the Pilbara region of Western Australia

2001 ◽  
Vol 28 (2) ◽  
pp. 135 ◽  
Author(s):  
Stuart Anstee ◽  
Kyle Armstrong
Keyword(s):  
Endangered Species ◽  
Western Australia ◽  
Site Fidelity ◽  
Iron Ore ◽  
Reproductive Activity ◽  
Significant Loss ◽  
Burrow System ◽  
Term Survival ◽  
Conservation Of Endangered Species

Translocations play an important role in the conservation of endangered species, and successful translocations are dependent on research into their response to such manipulations. The development of Hamersley Iron’s Yandi Iron Ore Project in the Pilbara region of Western Australia provided a unique opportunity to study the response of the western pebble-mound mouse, Pseudomys chapmani, to translocation. The translocation tested the effect of levels of individual familiarity within translocation groups on translocation success. A key part of the translocation involved the use of competent burrow systems in empty mounds. Success was measured by comparing the long-term survival, reproductive activity and site fidelity between treatments. Of 101 mice translocated, 65% were recaptured at least once post-release. Both the translocated and resident non-translocated groups had experienced a significant loss of individuals after 35 days; however, estimates of rates of survival after 176 days had increased to levels equivalent to those immediately following release. Eight mice were recaptured at, or close to, their points of release 6 months post-release. Reproductive activity was recorded in 13 of the 29 (44%) translocated females recaptured post-release, which was equivalent to that observed in non-translocated mice. Familiarity within translocation groups did not appear to affect translocation success as all treatments had similar rates of survival. This study demonstrated that successful translocations of P. chapmani are possible given a competent burrow system.

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