PIT POP! Bursting the bubble on home-range bias with fine-scale PIT telemetry

被引：1

作者：

Allan, Hugh ^{[1
]}

Duncan, Richard P. ^{[1
]}

Unmack, Peter ^{[1
]}

White, Duanne ^{[1
]}

Lintermans, Mark ^{[1
]}

机构：

[1] Univ Canberra, Inst Appl Ecol, Ctr Appl Water Sci, 11 Kirinari St, Bruce, ACT 2617, Australia

来源：

MARINE AND FRESHWATER RESEARCH | 2022年 / 73卷 / 11期

关键词：

batch marking; conservation; freshwater; home range; movement; passive integrated transponder; spatial ecology; threatened species; BLACKFISH GADOPSIS-BISPINOSUS; GALAXIAS-VULGARIS STOKELL; JUVENILE ATLANTIC SALMON; HABITAT USE; MACQUARIE PERCH; TAG RETENTION; BROWN TROUT; FISH; MOVEMENTS; RIVER;

D O I：

10.1071/MF22021

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

Context Improved tracking technologies increase understanding of fish movement, but care is required when comparing studies of different design. Aims We used an approach that allowed fine-scale tracking to compare results from individual-tracking designs to simulated batch-marking designs. Methods Adult Galaxias tantangara (a small freshwater fish) individuals were tagged with 9-mm PIT tags in a small headwater stream and tracked with an accuracy of 1 lineal metre. To evaluate differences between common study designs, data were re-analysed to simulate both batch-marking section size and tracking resolution between 1 and 250 m. Key results Home-range estimates decreased with a smaller section size and tracking resolution. Batch-marking simulations differed in 99% of cases, whereas individual tracking simulations differed in only 17% of comparisons. Comparisons between different methods were rarely statistically equivalent, being so only when section size or resolution was less than 4 m. Implications Importantly, batch-marking studies are often likely to overestimate home-range size, and results from different studies may be comparable only when resolution is very fine or identical, even if the same method was used.

引用

页码：1297 / 1309

页数：13