scholarly journals Population structure of short-finned pilot whales in the oceanic archipelago of Madeira based on photo-identification and genetic analyses: implications for conservation

2013 ◽  
pp. n/a-n/a ◽  
Author(s):  
Filipe Alves ◽  
Sophie Quérouil ◽  
Ana Dinis ◽  
Cátia Nicolau ◽  
Cláudia Ribeiro ◽  
...  
Keyword(s):  
Population Structure ◽  
Genetic Analyses ◽  
Photo Identification ◽  
Pilot Whales

scholarly journals Population structure of melon-headed whales (Peponocephala electra) in the Hawaiian Archipelago: Evidence of multiple populations based on photo identification

2011 ◽  
Vol 28 (4) ◽  
pp. 666-689 ◽  
Author(s):  
Jessica M. Aschettino ◽  
Robin W. Baird ◽  
Daniel J. McSweeney ◽  
Daniel L. Webster ◽  
Gregory S. Schorr ◽  
...  
Keyword(s):  
Population Structure ◽  
Multiple Populations ◽  
Hawaiian Archipelago ◽  
Photo Identification

Population structure of long-finned pilot whales in the North Atlantic: a correlation with sea surface temperature?

2000 ◽  
Vol 9 (7) ◽  
pp. 949-958 ◽  
Author(s):  
K. J. Fullard ◽  
G. Early ◽  
M. P. Heide-Jorgensen ◽  
D. Bloch ◽  
A. Rosing-Asvid ◽  
...  
Keyword(s):  
Population Structure ◽  
Surface Temperature ◽  
Sea Surface Temperature ◽  
North Atlantic ◽  
Sea Surface ◽  
The North ◽  
The North Atlantic ◽  
Pilot Whales

scholarly journals Population structure of island-associated dolphins: Evidence from photo-identification of common bottlenose dolphins (Tursiops truncatus) in the main Hawaiian Islands

2009 ◽  
Vol 25 (2) ◽  
pp. 251-274 ◽  
Author(s):  
Robin W. Baird ◽  
Antoinette M. Gorgone ◽  
Daniel J. McSweeney ◽  
Allan D. Ligon ◽  
Mark H. Deakos ◽  
...  
Keyword(s):  
Population Structure ◽  
Tursiops Truncatus ◽  
Bottlenose Dolphins ◽  
Hawaiian Islands ◽  
Photo Identification

scholarly journals Using laser photogrammetry to measure long-finned pilot whales (Globicephala melas)

2018 ◽  
Vol 49 (2) ◽  
pp. 269
Author(s):  
Joanna B. Wong ◽  
Marie Auger-Méthé
Keyword(s):  
Body Length ◽  
Small Sample Size ◽  
Total Body Length ◽  
Small Sample ◽  
Ease Of Use ◽  
Pilot Whale ◽  
Globicephala Melas ◽  
Photo Identification ◽  
Dorsal Fin ◽  
Pilot Whales

Knowledge of animal morphometry is important to understanding their ecology. By attaching two parallel lasers to a camera, known as laser photogrammetry (LP), a scale is projected onto photographed animals, allowing measurement of their body. Our primary aims were to test LP precision, and to estimate body length from dorsal-fin dimensions of Globicephala melas. Secondary aims involved demonstrating applications of LP, such as sex and leader determination. Using photographs taken over two-months, we measured dorsal base lengths (DBL) of 194 individuals individually-identified with natural markings. Results indicated 33 individuals were photographed in multiple encounters and eight matched previously-sexed whales. A mean difference of <2.1% between DBL’s of 58% of repeatedly-sighted individuals was found, and whales closer to the boat (<22m) produced more precise measures. The length from the blowhole to anterior insertion of the dorsal fin (BAID) was a better predictor of total body length in stranded whales than DBL, and laser-estimated lengths fell almost all within known pilot whale size. Despite our small sample size, we showed two examples of how LP could be applied in research: (1) males and females had similar DBL (n=8), but large males could be distinguished using DBL; (2) leaders were not necessarily bigger than other individuals in the same cluster (n=4). The ease of use of LP makes it a valuable tool in collecting measurements of body features, especially when coupled with photo-identification. Keywords: laser photogrammetry, morphometrics, measurement, length, Globicephala melas

Dispersal-limited detritivores in fire-prone environments: persistence and population structure of terrestrial amphipods (Talitridae)

2016 ◽  
Vol 25 (7) ◽  
pp. 753 ◽  
Author(s):  
L. Menz ◽  
H. Gibb ◽  
N. P. Murphy
Keyword(s):  
Population Structure ◽  
Fire Severity ◽  
Critical Role ◽  
Life History Strategies ◽  
Taxonomic Resolution ◽  
Genetic Analyses ◽  
Limited Dispersal ◽  
In Fire ◽  
The Impact

Invertebrate detritivores play a critical role in the decomposition of litter, an important component of wildfire fuel. Knowledge of invertebrate response to fire is often hampered by taxonomic resolution; however, genetic species identification can enable analysis of fine-scale assemblages and the interaction between dispersal and population recovery. In this study, we ask: do terrestrial amphipod assemblages differ following increasing fire severities and does population structure indicate in situ survival or recolonisation following severe fires? Using seven replicate sites over three fire severities, we measured amphipod abundance at the site of the catastrophic 2009 ‘Black Saturday’ fires in south-east Australia. Genetic analyses to distinguish species and population structure revealed 16 species. Populations of Arcitalitrus sylvaticus were highly structured, suggesting limited dispersal. Amphipod abundance and species richness were not affected by fire severity 3 years after fire. Localised population structure within A. sylvaticus suggests that in situ survival enabled amphipods to repopulate severely burnt sites. The genetic analyses used in this study enabled the detection of unrecognised diversity and population structure in these detritivores. With many detritivores showing similar life history strategies, studies that combine a genetic and ecological approach are essential for understanding the impact of fire on litter decomposition.

Sign in / Sign up

Export Citation Format

Share Document