Tick infestation of chicks in a seabird colony varies with local breeding synchrony, local nest density and habitat structure

2017 ◽  
Vol 48 (4) ◽  
pp. 472-478 ◽  
Author(s):  
Alejandra G. Ramos ◽  
Hugh Drummond
Keyword(s):  
Habitat Structure ◽  
Tick Infestation ◽  
Nest Density ◽  
Breeding Synchrony ◽  
Seabird Colony ◽  
Local Breeding

Acoustic activity across a seabird colony reflects patterns of within‐colony flight rather than nest density

Ibis ◽  
2019 ◽  
Vol 162 (2) ◽  
pp. 416-428 ◽  
Author(s):  
Gavin E. Arneill ◽  
Emma Jane Critchley ◽  
Saskia Wischnewski ◽  
Mark J. Jessopp ◽  
John L. Quinn
Keyword(s):  
Nest Density ◽  
Acoustic Activity ◽  
Seabird Colony

Habitat constraints and spatial bias in seabird colony distributions

Ecography ◽  
2000 ◽  
Vol 23 (5) ◽  
pp. 575-578 ◽  
Author(s):  
L. Scott Forbes ◽  
Martin Jajam ◽  
Gary W. Kaiser
Keyword(s):  
Spatial Bias ◽  
Seabird Colony

A Survey on Tick Infestation in Domestic Birds Sold at Gwagwalada Market, Abuja, FCT, Nigeria.

2016 ◽  
Vol 5 (04) ◽  
pp. 4974
Author(s):  
Ayoh Stephen O. ◽  
Olanrewaju Comfort A*
Keyword(s):  
Chemical Control ◽  
Tick Species ◽  
Tick Infestation ◽  
Guinea Fowl ◽  
Vector Group ◽  
Arthropod Vector ◽  
Argas Persicus ◽  
Domestic Birds ◽  
Micro Organisms

Ticks transmit a greater variety of pathogenic micro-organisms than any other arthropod vector group, and are among the most important vectors of diseases affecting animals. A survey on the prevalence of tick species infesting domestic birds sold in Gwagwalada main market, Abuja between April and July, 2015. A total of 450 birds were examined by feather separation with fingers and a pair of forceps to expose the skin of the birds for presence of the ticks. An overall prevalence of 25.6% was observed. Out of the 150 domestic fowls examined 62(53.9%) were infested, 44(29.3%) of the 150 Guinea fowl and 9(6.0%) of the 150 Pigeons were infested. Of all the ticks identified, 93(51.4%) were from the Domestic Fowls and 77(42.5%) from the Guinea fowl and 11(6.0%) from Pigeon. Thirty (32.3%) of the ticks from the Domestic fowls were Argas persicus, 25(26.9%) Argas walkerae, 20 (21.5%) Ornithodorus moubata and 18(19.4%) Ornithodorus savignyi. Similarly, 34(44.2%) of the ticks from Guinea fowl were A. walkerae, 20(28.2%) O. moubataand 23(32.4%) O. savignyi. Five (45.5%) of the ticks from Pigeon were A. persicus, 4 (36.4%) were A. walkerae, 2 (18.2%) were O. moubata and no O. savignyi. Observation on the location of tick from the hosts body showed highest prevalence was found under the wings (55.2%) and lowest on the head & neck (5.00%). The result of this research revealed that Gwagwalada market poultry section is endemic of tick infestation. Chemical control with acaricides and improved management and sanitation of the poultry cages in the market should be enforced.

Amblyomma tick infestation in Indian Rat Snake Ptyas mucosa from Chandrapur district of Maharashtra state

2007 ◽  
Vol 22 (11) ◽  
pp. 2897-2898 ◽  
Author(s):  
L.J. Harkare ◽  
B.S. Baviskar ◽  
P.J. Gawande ◽  
P.S. Bankar ◽  
S.V. Deshmukh ◽  
...  
Keyword(s):  
Tick Infestation ◽  
Rat Snake

Temporal Changes in Habitat Selection and Nest Spacing in a Colony of Ross' and Lesser Snow Geese

The Auk ◽  
1983 ◽  
Vol 100 (2) ◽  
pp. 335-343 ◽  
Author(s):  
M. Robert McLandress
Keyword(s):  
Nearest Neighbor ◽  
Average Distance ◽  
Habitat Preferences ◽  
Nearest Neighbors ◽  
Nest Density ◽  
Snow Goose ◽  
Snow Geese ◽  
Lesser Snow Geese ◽  
Average Size ◽  
Island Habitats

Abstract I studied the nesting colony of Ross' Geese (Chen rossii) and Lesser Snow Geese (C. caerulescens caerulescens) at Karrak Lake in the central Arctic of Canada in the summer of 1976. Related studies indicated that this colony had grown from 18,000 birds in 1966-1968 to 54,500 birds in 1976. In 1976, geese nested on islands that were used in the late 1960's and on an island and mainland sites that were previously unoccupied. Average nest density in 1976 was three-fold greater than in the late 1960's. Consequently, the average distance to nearest neighbors of Ross' Geese in 1976 was half the average distance determined 10 yr earlier. The mean clutch size of Ross' Geese was greater in island habitats where nest densities were high than in less populated island or mainland habitats. The average size of Snow Goose clutches did not differ significantly among island habitats but was larger at island than at mainland sites. Large clutches were most likely attributable to older and/or earlier nesting females. Habitat preferences apparently differed between species. Small clutches presumably indicated that young geese nested in areas where nest densities were low. The establishment of mainland nesting at Karrak Lake probably began with young Snow Geese using peripheral areas of the colony. Young Ross' Geese nested in sparsely populated habitats on islands to a greater extent than did Snow Geese. Ross' Geese also nested on the mainland but in lower densities than Ross' Geese nesting in similar island habitats. Successful nests with the larger clutches had closer conspecific neighbors than did successful nests with smaller clutches. The species composition of nearest neighbors changed significantly with distance from Snow Goose nests but not Ross' Goose nests. Nesting success was not affected by the species of nearest neighbor, however. Because they have complementary antipredator adaptations, Ross' and Snow geese may benefit by nesting together.

scholarly journals Phenology-mediated effects of phenotype on the probability of social polygyny and its fitness consequences in a migratory passerine

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
David Canal ◽  
Lotte Schlicht ◽  
Simone Santoro ◽  
Carlos Camacho ◽  
Jesús Martínez-Padilla ◽  
...  
Keyword(s):  
Ecological Factors ◽  
Local Networks ◽  
Mediated Effects ◽  
Fitness Consequences ◽  
Phenotypic Quality ◽  
Lifetime Number ◽  
Local Breeding ◽  
Individual Mating ◽  
Sexual Traits ◽  
Secondary Female

AbstractWhy females engage in social polygyny remains an unresolved question in species where the resources provided by males maximize female fitness. In these systems, the ability of males to access several females, as well as the willingness of females to mate with an already mated male, and the benefits of this choice, may be constrained by the socio-ecological factors experienced at the local scale. Here, we used a 19-year dataset from an individual-monitored population of pied flycatchers (Ficedula hypoleuca) to establish local networks of breeding pairs. Then, we examined whether the probability of becoming socially polygynous and of mating with an already mated male (thus becoming a secondary female) is influenced by morphological and sexual traits as proxies of individual quality relative to the neighbours. We also evaluated whether social polygyny is adaptive for females by examining the effect of females’ mating status (polygamously-mated vs monogamously-mated) on direct (number of recruits in a given season) and indirect (lifetime number of fledglings produced by these recruits) fitness benefits. The phenotypic quality of individuals, by influencing their breeding asynchrony relative to their neighbours, mediated the probability of being involved in a polygynous event. Individuals in middle-age (2–3 years), with large wings and, in the case of males, with conspicuous sexual traits, started to breed earlier than their neighbours. By breeding locally early, males increased their chances of becoming polygynous, while females reduced their chances of mating with an already mated male. Our results suggest that secondary females may compensate the fitness costs, if any, of sharing a mate, since their number of descendants did not differ from monogamous females. We emphasize the need of accounting for local breeding settings (ecological, social, spatial, and temporal) and the phenotypic composition of neighbours to understand individual mating decisions.

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