Wintering ecology of sympatric subspecies of Sandhill Crane: Correlations between body size, site fidelity, and movement patterns

AbstractThe Colchic toad (Bufo verrucosissimus) inhabits wet mountain forests of Caucasia and breeds in small and unstable slow streams and seepage pools. Pair formation usually takes place on land. Amplexing couples search for new breeding sites every year; there is little site fidelity. Active searching for breeding sites is facilititated by the small size of males; the species is highly dimorphic, males having a mean body length of 70-85 mm, females a length of 100-130 mm. If a larger, more permanent water body appears in a region, reproductive tactics change and males wait for females around the pond. These generalizations are supported by data collected from 1989-1993. There was an inverse correlation between body size of females and males in amplexing pairs.

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Movement Patterns and Site Fidelity of River Dolphins (Inia geoffrensis and Sotalia fluviatilis) in the Peruvian Amazon as Determined by Photo-Identification

Aquatic Mammals ◽

10.1578/am.33.3.2007.359 ◽

2007 ◽

Vol 33 (3) ◽

pp. 359-367 ◽

Cited By ~ 9

Author(s):

Tamara L. McGuire ◽

Thomas Henningsen

Keyword(s):

Site Fidelity ◽

Movement Patterns ◽

Peruvian Amazon ◽

Photo Identification ◽

Inia Geoffrensis ◽

Sotalia Fluviatilis

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Interannual site fidelity of Pacific halibut: potential utility of protected areas for management of a migratory demersal fish

ICES Journal of Marine Science ◽

10.1093/icesjms/fsx040 ◽

2017 ◽

Vol 74 (8) ◽

pp. 2120-2134 ◽

Cited By ~ 8

Author(s):

Julie K. Nielsen ◽

Andrew C. Seitz

Keyword(s):

Protected Areas ◽

Site Fidelity ◽

Large Scale ◽

Marine Protected Area ◽

Spatial Scales ◽

Movement Patterns ◽

Demersal Fish ◽

Glacier Bay ◽

Migration Timing ◽

Pacific Halibut

Abstract Pacific halibut is a large-bodied demersal fish species known to undertake large-scale winter spawning migrations. We characterized annual movement patterns of Pacific halibut relative to a Marine Protected Area (MPA) in Glacier Bay National Park, Alaska using electronic tags. In the summer of 2013, we deployed 25 Pop-up Satellite Archival Tags (PSATs) on halibut to determine seasonal movement patterns, where residency within the MPA was inferred by comparing PSAT depth and temperature records to stationary archival tag data and oceanographic survey data. To characterize within-summer movement patterns, 15 halibut tagged with PSATs were double-tagged with acoustic transmitters and actively tracked during the summers of 2013 and 2014. Home range behaviour and interannual site fidelity at spatial scales <5 km were observed for the majority of tagged fish. A small proportion (6/21 fish with PSAT data) departed the MPA on winter migrations during December 2013. A majority (4/6) of migratory fish returned to the MPA after an average of 57 d (s.d. 22 d) spent outside of the MPA. Migration timing generally coincided with existing winter commercial fishery closures. The annual movement patterns of tagged halibut relative to MPA boundaries and winter commercial fisheries closures suggest that the Glacier Bay MPA could serve as a year-round refuge from commercial harvest for both residential and migratory halibut. If halibut behaviour is similar in other areas, protected areas may provide some utility for management despite the migratory nature of halibut.

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Further evidence of pigmentation change in white sharks, Carcharodon carcharias

Marine and Freshwater Research ◽

10.1071/mf12208 ◽

2012 ◽

Vol 63 (12) ◽

pp. 1215 ◽

Cited By ~ 13

Author(s):

Rachel Robbins ◽

Andrew Fox

Keyword(s):

Site Fidelity ◽

Movement Patterns ◽

White Shark ◽

Population Modelling ◽

Carcharodon Carcharias ◽

Caudal Fin ◽

Present Evidence ◽

Caudal Lobe ◽

Pigmentation Change ◽

Shape And Size

Patterns of pigmentation are widely used for the identification of white sharks, with photographic databases often forming the basis for studies of population modelling, site fidelity and movement patterns. The permanence of these identifying markings is assumed to remain constant. Here, we present evidence of melanism resulting in a change in the shape and size of pigmentation markings on the lower caudal lobe of a female white shark. We found a 33% reduction in size of an islet over a 9-month period. The newly melanised region was 10% darker than the adjoining pigmented areas, and did not match the original pattern. Possible causes of the observed melanism are presented, and the implications for the reliability of using caudal-fin pigmentation patterns for identification purposes are discussed, with a combinational matching approach recommended.

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