Sea Turtle Conservation in Ubatuba, Southeastern Brazil, a Feeding Area with Incidental Capture in Coastal Fisheries

Gallo, Berenice M. G.; Macedo, Suami; Giffoni, Bruno de Barros; Becker, José Henrique; Barata, Paulo C. R.

doi:10.2744/1071-8443(2006)5[93:stcius]2.0.co;2

Cited by 75 publications

(52 citation statements)

References 12 publications

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“…Additionally, gradients in age are predicted along the South American coast with mean particle age increasing from the Equator to the south. The older particle age along coastal areas of southern Brazil, Uruguay and Argentina, corresponds well with developmental habitats for green turtles, which are probably sites of first juvenile recruitment from oceanic habitats [30]. Furthermore, the rspb.royalsocietypublishing.org Proc R Soc B 280: 20131468 oldest particles from Ascension and Trindad drift to the Indian Ocean, an exchange that is thought to occur only rarely in turtles [25,26].…”

Section: Discussionmentioning

confidence: 99%

Finding the ‘lost years’ in green turtles: insights from ocean circulation models and genetic analysis

Putman

Naro‐Maciel

2013

Proc. R. Soc. B.

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Organismal movement is an essential component of ecological processes and connectivity among ecosystems. However, estimating connectivity and identifying corridors of movement are challenging in oceanic organisms such as young turtles that disperse into the open sea and remain largely unobserved during a period known as 'the lost years'. Using predictions of transport within an ocean circulation model and data from published genetic analysis, we present to our knowledge, the first basin-scale hypothesis of distribution and connectivity among major rookeries and foraging grounds (FGs) of green turtles (Chelonia mydas) during their 'lost years'. Simulations indicate that transatlantic dispersal is likely to be common and that recurrent connectivity between the southwestern Indian Ocean and the South Atlantic is possible. The predicted distribution of pelagic juvenile turtles suggests that many 'lost years hotspots' are presently unstudied and located outside protected areas. These models, therefore, provide new information on possible dispersal pathways that link nesting beaches with FGs. These pathways may be of exceptional conservation concern owing to their importance for sea turtles during a critical developmental period.

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Section: Discussionmentioning

confidence: 99%

Finding the ‘lost years’ in green turtles: insights from ocean circulation models and genetic analysis

Putman

Naro‐Maciel

2013

Proc. R. Soc. B.

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“…Until recently, the issue of fisheries bycatch of sea turtles has been largely focused on the high-seas industrial fisheries (Wetherall et al 1993, Poiner & Harris 1996, Lewison et al 2004, Casale et al 2007). Bycatch in artisanal fisheries has now been recognized as a major threat (Gallo et al 2006, Lum 2006, Pupo et al 2006, Alfaro Shigueto et al 2007, Bal et al 2007, Dossa et al 2007, Lewison & Crowder 2007, Peckham et al 2007, Dutton & Squires 2008. Nevertheless, small-scale artisanal fisheries are distributed throughout the world in areas that overlap important sea turtle habitats, and are therefore a significant challenge for sea turtle conservation efforts (Koch et al 2006, Read 2007, Dutton & Squires 2008.…”

Section: Introductionmentioning

confidence: 99%

Demography of loggerhead turtles Caretta caretta in the southeastern Pacific Ocean: fisheries-based observations and implications for management

Shigueto¹,

Mangel²,

Seminoff³

et al. 2008

Endang. Species Res.

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Since 2000 we have used artisanal fishing operations as an opportunistic platform for inwater studies of marine megafauna, including sea turtles. We present data on loggerhead turtles Caretta caretta incidentally captured by artisanal longline and gillnet fisheries activities operating from 7 ports along the coast of Peru. Data on location, body size and apparent maturity class of loggerheads were gathered. A total of 323 loggerhead turtle captures were recorded between latitudes 13 and 22°S in waters from 46.5 to 637.1 km off shore. Curved carapace length (CCL) ranged from 35.9 to 86.3 cm (mean ± SD = 57.2 ± 9.18 cm, n = 307), which equated to a predominance of juvenile turtles. The substantial fishing effort of the fisheries sampled (63 083 gillnet and 11 316 longline trips yr -1 ) underscores the importance of mitigating fisheries impacts on loggerheads in the southeastern Pacific. We recommend that regional research and conservation work quantitatively document and, where possible, reduce impacts to loggerheads in the southeastern Pacific foraging area.

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“…Although information describing decompression sickness in C. mydas is scarce, two fresh C. mydas carcasses found stranded in the state of Paraná, southern Brazil, demonstrated copious bubbles in the heart and major vessels ( Figure 2D). Along the Brazilian coast, bycatch is also the main threat to C. mydas conservation, and affects animals in both coastal and oceanic areas (GALLO et al, 2006;PUPO et al, 2006;SALES et al, 2008;SANTOS et al, 2011;FIEDLER et al, 2012;LÓPEZ-BARRERA et al, 2012;MONTEIRO et al, 2016). The high density of small-scale fisheries overlaps coastal areas used by juvenile C. mydas.…”

Section: Mortality and Morbidity Of Chelonia Mydas Associated With Humentioning

confidence: 99%

The green turtle Chelonia mydas as a marine and coastal environmental sentinels: anthropogenic activities and diseases

Domiciano

Domit

Bracarense

2017

SCA

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The green turtle Chelonia mydas as a marine and coastal environmental sentinels: anthropogenic activities and diseases Tartaruga-verde, Chelonia mydas, como sentinela do ambiente marinho e costeiro: atividades antrópicas e enfermidades AbstractThe green turtle Chelonia mydas is a widely distributed, slowly maturing species with a complex life cycle, using both oceanic and coastal environments. The species is exposed to different threats and is considered an environmental sentinel that indicates variation among, and the severity of hazards to marine ecosystems. This study aimed to describe both anthropogenic impacts, and infectious and parasitic diseases in C. mydas -including cases along the Brazilian coast -and implications for conservation. Bycatch is reported as the main threat to the conservation of this species, followed by debris ingestion, collisions with boats, dredging, and chronic environmental contamination. All of these impacts may directly or indirectly cause death, by facilitating contact with pathological agents and by increasing vulnerability to secondary diseases. The pathological agents associated with lesions include viruses, bacteria, fungi, protozoa, and helminths. Fibropapillomatosis is an example of a chronic disease characterized by cutaneous and visceral tumors that affects mostly juvenile C. mydas worldwide and is associated with the Chelonid herpesvirus 5. The bacterias Vibrio alginolyticus, Aeromonas hydrophila, and Pseudomonas fluorescens are found in the aquatic environment and among C. mydas lesions in various organs. Trematode adults and eggs of the family Spirorchiidae are also frequent in systemic cardiovascular diseases of C. mydas. The direct impacts of anthropogenic activities and diseases are synergistic and may affect the specie's health and conservation. Therefore, the monitoring and systematic diagnosing of diseases and causes of death -including necropsy, histopathology, and molecular exams -are necessary to assess a population's health, to support appropriate decisions of coastal management and to target future research topics that optimize C. mydas conservation. Key words: Bycatch. Conservation. Debris ingestion. Morbidity. Pathogenic agents. Sea turtle. ResumoA tartaruga-verde, Chelonia mydas, possui ampla distribuição geográfica, reprodução tardia e complexo ciclo de vida, habitando áreas costeiras e oceânicas. Devido a essas características, a espécie está exposta a diferentes tipos de ameaças e pode sinalizar sobre variações e a gravidade desses impactos ao longo do tempo no ecossistema, sendo considerada sentinela ambiental. Este trabalho teve por objetivo discorrer sobre relatos de atividades antrópicas impactantes e doenças infecciosas e parasitárias em C. mydas, com ênfase nas ocorrências no litoral brasileiro. A captura acidental em petrechos de pesca é uma das principais ameaças à conservação desses animais, assim como a ingestão de resíduos sólidos, colisão com embarcações, dragagens e bioacumulação de contaminantes químicos, os quais podem atuar diretament...

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Sea Turtle Conservation in Ubatuba, Southeastern Brazil, a Feeding Area with Incidental Capture in Coastal Fisheries

Cited by 75 publications

References 12 publications

Finding the ‘lost years’ in green turtles: insights from ocean circulation models and genetic analysis

Finding the ‘lost years’ in green turtles: insights from ocean circulation models and genetic analysis

Demography of loggerhead turtles Caretta caretta in the southeastern Pacific Ocean: fisheries-based observations and implications for management

The green turtle Chelonia mydas as a marine and coastal environmental sentinels: anthropogenic activities and diseases

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