Population structure and residency of whale sharks Rhincodon typus at Utila, Bay Islands, Honduras

被引：43

作者：

Fox, S. ^{[1
]}

Foisy, I. ^{[1
]}

De La Parra Venegas, R. ^{[2
]}

Galvan Pastoriza, B. E. ^{[2
]}

Graham, R. T. ^{[3
]}

Hoffmayer, E. R. ^{[4
]}

Holmberg, J. ^{[5
]}

Pierce, S. J. ^{[5
,6
]}

机构：

[1] Utila Whale Shark Res, Utila, Honduras

[2] Ch Ooj Ajauil AC, Cancun, Quintana Roo, Mexico

[3] Wildlife Conservat Soc, Gulf & Caribbean Sharks & Rays Program, Punta Gorda, Belize

[4] Natl Marine Fisheries Serv, Southeast Fisheries Sci Ctr, Mississippi Labs, Pascagoula, MS 39567 USA

[5] ECOCEAN USA, Portland, OR 97217 USA

[6] Marine Megafauna Fdn, Tofo Beach, Inhambane, Mozambique

来源：

JOURNAL OF FISH BIOLOGY | 2013年 / 83卷 / 03期

关键词：

Atlantic; movement; philopatry; sexual segregation; site fidelity; DIVING BEHAVIOR; PATTERNS; IDENTIFICATION; REEF; SIZE; CONSERVATION; AGGREGATION; ABUNDANCE; MOVEMENT; CONDUCT;

D O I：

10.1111/jfb.12195

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

There were 479 reported whale shark Rhincodon typus encounters between 1999 and 2011 at the island of Utila, which forms part of the Meso-American Barrier Reef System (MBRS) in the western Caribbean Sea. The majority of R. typus were found to feed on small bait fish associated with various tuna species. Ninety-five individual R. typus, ranging from 2 to 11 m total length (L-T), were identified through their unique spot patterns. A significant male bias (65%) was present. There was no significant difference between the mean +/- S.D. L-T of female (6.66 +/- 1.65 m) and male (6.25 +/- 1.60 m) R. typus. Most R. typus were transient to Utila, with 78% sighted only within a single calendar year, although some individuals were sighted in up to 5 years. Mean residency time was modelled to be 11.76 days using maximum likelihood methods. (C) 2013 The Fisheries Society of the British Isles

引用

页码：574 / 587

页数：14

共 53 条

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