Report on the collision between a spinner dolphin and a boat in the Fernando de Noronha Archipelago, Western Equatorial Atlantic, Brazil

Camargo, Fernanda Scarano; Bellini, Cláudio

doi:10.1590/s1676-06032007000100024

Cited by 8 publications

(6 citation statements)

References 7 publications

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“…Strikes that appear sublethal may eventually lead to death (e.g. Camargo and Bellini, 2007). We reiterate the recommendation of others that propeller guards should be installed on boats that are in regular contact with cetaceans (Visser, 1999;Sanino and Yañez, 2000), and should be made compulsory for all commercial dolphin watching or swim-with platforms, coupled with research to investigate the most effective designs for such guards.…”

Section: Global Standardised Databasementioning

confidence: 69%

“…On 26 April 2006 a live spinner dolphin was observed inside a cove of Fernando de Noronha Archipelago (03°51'S,32°25'W) off Brazil, with severed upper and lower jaws and two parallel incisive injuries on its flank indicating it had been hit by a boat propeller (Camargo and Bellini, 2007). Since the dolphin looked very emaciated, feeding apparently had been impaired and its survival seemed unlikely.…”

Section: Spinner Dolphin Stenella Longirostrismentioning

confidence: 99%

“…Since the dolphin looked very emaciated, feeding apparently had been impaired and its survival seemed unlikely. Because the spinner dolphin population in this area is subject to intense boatbased tourism (Camargo and Bellini, 2007), it was thought the strike likely was from a dolphin-watching boat not equipped with a propeller guard.…”

Section: Spinner Dolphin Stenella Longirostrismentioning

confidence: 99%

“…Recurring swim-with-dolphin activities in open waters and whale/dolphin watching are thought to increase tolerance of humans and vessels, disrupt natural behaviour and increase the animals' vulnerability to vessel strikes (e.g. Samuels et al, 2000;Samuels and Bejder, 2004;Camargo and Bellini, 2007). Dolphins may be more capable of avoiding collision if a vessel's course is predictable and if there is adequate room or depth for escape.…”

Section: Global Standardised Databasementioning

confidence: 99%

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Vessel collisions with small cetaceans worldwide and with large whales in the Southern Hemisphere, an initial assessment

Waerebeek¹,

Baker²,

Félix³

et al. 2007

Lat. Am. J. Aquat. Mamm.

166

165

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ABSTRACT:Collisions with vessels are a well-documented conservation problem for some populations of large whales (LW) in the Northern Hemisphere. Less attention has been given to incidents in the Southern Hemisphere or to small cetaceans (SC) worldwide, therefore an experimental database was compiled (N=256; 119 LW, 137 SC) to allow a rapid assessment. Confirmed collision records were identified for 25 species (7 LW, 18 SC) and unconfirmed but probable records for 10 other species (2 LW, 8 SC). Among LW, ship-caused mortality and traumatic injuries seem to affect primarily southern right (56 reported cases), humpback (15) and Bryde's whales (13), but also sperm (8), blue (5), sei (4) and fin whales (2) are involved, and probably Antarctic minke and dwarf minke whales. Southern right whale populations off South Africa and off eastern South America (Brazil, Uruguay and Argentina) suffer significant mortality. Incidence and potential population impact vary widely among the 26 small cetacean species for which collision records exist. Vessel strikes in at least two populations each of the Indo-Pacific humpback dolphin (Xiamen and Hong Kong/Pearl River, possibly western Taiwan), Irrawaddy dolphin (Mahakam River, Chilika Lagoon, possibly Laos) and finless porpoise (Yangtze River, Hong Kong) may directly compromise long-term survival. Annual vessel-caused mortality (min. 2.9% of population) for Irrawaddy dolphins in the Mahakam River may not be sustainable. The quasi-extinction of the baiji warns for a potential similar fate for the Yangtze River finless porpoise and Ganges river dolphin. Two calves of the endangered Hector's dolphin are known killed by boats. All highly impacted species have a neritic, estuarine or fluviatile habitat, areas where vessel traffic is concentrated. Species that may receive a moderate impact from collisions but which may be sustainable at species level (because many strikes are nonlethal), include common bottlenose dolphins, killer whales, short-finned pilot whales and pygmy sperm whales. Almost 2% of common bottlenose dolphins in the Gulf of Guayaquil showed propeller-inflicted injuries and scars. Propeller guards should be made compulsory for all boat-based cetacean tourism, as habituation to boat traffic seems a contributing factor in accidents. Low impact occurs in 15 small cetacean species with only few reported vessel strikes. However, vast underreporting is thought to be the norm and there is a need for a global, standardised database. RESUMEN:Las colisiones con barcos constituyen un problema de conservación bien documentado en el caso de ballenas grandes (BG) en el hemisferio norte. Menos atención se le ha brindado a los incidentes en el hemisferio sur y a los cetáceos menores (CM) alrededor del mundo. A fin de realizar una evaluación rápida de este problema se ha compilado una base de datos preliminar (N=256; 119 BG, 137 CM), la cual incluye registros confirmados de colisión para 25 especies (7 BG, 18 CM) y registros no confirmados pero probables para otras 10 (2 BG, 8 CM). Entre B...

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Section: Global Standardised Databasementioning

confidence: 69%

Section: Spinner Dolphin Stenella Longirostrismentioning

confidence: 99%

Section: Spinner Dolphin Stenella Longirostrismentioning

confidence: 99%

Section: Global Standardised Databasementioning

confidence: 99%

See 2 more Smart Citations

Vessel collisions with small cetaceans worldwide and with large whales in the Southern Hemisphere, an initial assessment

Waerebeek¹,

Baker²,

Félix³

et al. 2007

Lat. Am. J. Aquat. Mamm.

166

165

View full text Add to dashboard Cite

show abstract

“…Porém, em algumas situações em que não são respeitados os limites legais existentes, já foi relatado transtornos envolvendo algumas espécies, com alterações dos padrões de comportamento (Nowacek et al 2001, Erbe 2002, Buckstaff 2004, Simões-Lopes 2005, Valle & Melo 2006 e o comprometimento da integridade física (Laist et al 2001, Wells & Scott 1997, Yan et al 2006, Camargo & Bellini 2007, sendo desta forma a colisão com embarcações um risco eminente (IBAMA 2001).…”

Section: Introductionunclassified

Embarcações motorizadas: uma ameaça aos peixes-boi marinhos (Trichechus manatus) no Brasil

et al. 2007

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The increasing traffic of motorboats on feeding, resting and reproduction areas used by manatees causing serious problems for these animals, so scaring them away and leading to potential collisions. The purpose of this study was to describe cases interaction between boat and Antillean manatees (Trichechus manatus) living in the Northeastern coast of Brazil. These interactions took place in the State of Ceará, Paraíba and Sergipe, involving three specimens, one of them with four records. Clinical alterations were observed, such as edema in the frontal part of the body, ocular proptosis, weight loss and multiple cuts all over the body. Therefore, the increasing traffic of motorboats, allied to the lack of normative rules and effective law enforcement assuring the protection of specific areas, represent a direct risk to the conservation of Antillean manatees living in the Northeastern coast of Brazil.Keywords: aquatic mammals, sirenians, conservation, rescue, collision. O aumento do tráfego de embarcações motorizadas em áreas utilizadas para alimentação, descanso e reprodução pelos peixes-boi marinhos tem não só afugentado estes animais, mas resultado em potenciais casos de colisões. Este trabalho tem como objetivo relatar casos de interações entre embarcações motorizadas e peixes-boi marinhos (Trichechus manatus) no litoral Nordeste do Brasil. As interações ocorreram nos Estados do Ceará, Paraíba e Sergipe com três espécimes, sendo um destes com quatro registros. Foram observados transtornos clínicos como edema da região frontal, proptose ocular, emagrecimento e múltiplos cortes ao longo do corpo. Sendo assim, o aumento do tráfego de embarcações, e a falta de normativas e de fiscalização que assegurem a efetiva proteção de determinadas áreas, representam um risco direto para a conservação dos peixes-boi marinhos no litoral Nordeste do Brasil.Palavras-chave: mamíferos aquáticos, sirênios, conservação, resgate, colisão.

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Vertebrate Biodiversity

Shah Esmaeili,

Pagliani,

de Carvalho

et al. 2023

Brazilian Sandy Beaches

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Report on the collision between a spinner dolphin and a boat in the Fernando de Noronha Archipelago, Western Equatorial Atlantic, Brazil

Cited by 8 publications

References 7 publications

Vessel collisions with small cetaceans worldwide and with large whales in the Southern Hemisphere, an initial assessment

Vessel collisions with small cetaceans worldwide and with large whales in the Southern Hemisphere, an initial assessment

Embarcações motorizadas: uma ameaça aos peixes-boi marinhos (Trichechus manatus) no Brasil

Vertebrate Biodiversity

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