Marine Turtles Stranded in Northeastern Brazil: Composition, Spatio-Temporal Distribution, and Anthropogenic Interactions

Farias, Daniel Solon Dias de; Alencar, Ana Emília Barboza de; Bomfim, Aline da Costa; Fragoso, Ana Bernadete de Lima; Rossi, Silmara; Moura, Geraldo Jorge Barbosa de; Gavilan, Simone Almeida; Silva, Flávio José de Lima

doi:10.2744/ccb-1309.1

Cited by 16 publications

(16 citation statements)

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“…Sea turtles, their nests, and their offspring are often exposed to different threats, such as urban development on the coast (Kamrowski et al 2014, Lopez et al 2015, pollution, (Farias et al 2019, Soares et al 2020, climate change (Tomillo et al 2015, Reneker & Kamel 2016, and interaction with fishing (Castilhos et al 2011, Guebert et al 2013. Theft of eggs is an old threat and it still occurs today, as observed in our study site.…”

Section: Discussionsupporting

confidence: 54%

Long-term monitoring of marine turtle nests in northeastern Brazil

et al. 2021

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This study monitored marine turtle nests in a region known as the Potiguar Basin, which stretches from the northern region of Rio Grande do Norte State (5°4’1.15” S, 36°4’36.41” W) to eastern Ceará State (4°38’48.28” S, 37°32’52.08” W) in Brazil. We collected data from January 2011 to December 2019 to identify species of sea turtles that spawn in the basin, to analyze the nesting spatial-temporal pattern and nests characteristics, and to record effects of environmental and anthropic factors on nests. A field team examined sea turtle tracks and nests signs. Turtle clutches were monitored daily until hatchings emerged from the nests. We monitored nests of hawksbill (Eretmochelys imbricata; n = 238) and olive Ridley turtles (Lepidochelys olivacea; n = 103). The nesting season for E. imbricata occurred between December and May and for L. olivacea from March to August. Hawksbills had clutch size, incubation time, number of unhatched eggs, and dead hatchlings higher than olive Ridley turtles; nevertheless, they presented lower hatching success. Precipitation between 0 and 22 mm and relative humidity (RH) higher than 69% increased the hatching success rate for E. imbricata; however, rainfall above 11 mm and RH 64% had the same effect for L. olivacea. Signs of egg theft and human presence (e.g. vehicle traffic and plastic residues on the beach) were recorded and are considered threats to nests. The results of our long-term monitoring study in the Potiguar Basin provide basis for the implementation of mitigation measures and adoption of management policies at nesting beaches in this Brazilian region.

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Section: Discussionsupporting

confidence: 54%

Long-term monitoring of marine turtle nests in northeastern Brazil

et al. 2021

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“…Sea turtles have a complex and long life cycle, making them susceptible to threats caused by natural, biological, and/or anthropic factors at all developmental stages [1], [2], [3], [4], [5],…”

Section: Introductionmentioning

confidence: 99%

Rehabilitation of a green sea turtle (Chelonia mydas) after collision with motorboat in the archipelago of Fernando de Noronha, Brazil

Freire

Oliveira

Pires

et al. 2021

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A juvenile green sea turtle (Chelonia mydas) of undetermined sex was rescued on October 16, 2019, in the archipelago of Fernando de Noronha, Pernambuco, Brazil. The animal was presence of active bleeding resulting from two transverse fractures in the carapace, with exposure of the coelomic cavity. Radiological and hematological tests were performed. The animal received therapeutic support and surgical reconstruction of the carapace. The animal was medically cleared and reintroduced into the natural environment 120 days after it was rescued. The protocol used here for both the rehabilitation and the surgical procedure was concluded to be effective.

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“…Dentre as sete espécies de tartarugas marinhas existentes no mundo, cinco ocorrem no Brasil, incluindo o estado do Rio Grande do Norte, como área de importância para conservação de todas as cinco espécies (Farias et al, 2019;Silva-Júnior et al, 2019).…”

Section: Introductionunclassified

“…Uma das principais ameaças às tartarugas marinhas têm sido as atividades antrópicas (Farias et al, 2019;Rizzi et al, 2019), tais como ingestão de resíduos antropogênicos (Gall e Thompson, 2015), interação com a pesca (Gagliardi et al, 2018) e choque com embarcações motorizadas (Franchini et al, 2016). Por estes motivos, a tartaruga-cabeçuda (Caretta caretta) é classificada globalmente como "em perigo" de extinção (Butt et al, 2016).…”

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Reabilitação de tartaruga-cabeçuda (Caretta caretta Linnaeus, 1758) após traumatismo craniano

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Traumas cranianos em tartarugas marinhas geralmente estão relacionados à ação antrópica por colisão com embarcações motorizadas. Em sua maioria, estes eventos são fatais, e quando não, várias sequelas podem permanecer. Desta forma, objetivou-se relatar um caso de uma tartaruga-cabeçuda (Caretta caretta) com politraumatismos craniano. O espécime foi resgatado encalhado no dia 17 de novembro de 2018, na praia de Retirinho, município de Aracati, Ceará, Brasil. O animal foi encontrado ativo e responsivo, com bom escore corpóreo e elevado grau de desidratação. Na inspeção, verificou-se uma lesão traumática na cabeça, que atingiu as placas frontoparietal, parietais e temporais esquerda e supraocular esquerda, com exposição de tecido mole adjacente. No ramo mandibular esquerdo, presença de lesão perfuro-incisa, e na cavidade oral, anzol de pesca aderido à musculatura da sínfise mandibular direita. No exame neurológico, observou-se excitação e hipersensibilidade ao toque, resposta ao teste de ameaça no olho direito, mas apresentou reflexo reduzido no olho esquerdo. Os quatro membros responderam satisfatoriamente ao teste de retirada, não manifestando movimentos incoordenados. O animal recebeu suporte terapêutico com administração de antibióticos, analgésicos, anti-inflamatórios, polivitamínicos, fluidoterapia e tratamento tópico. Após 291 dias de iniciado o processo de reabilitação, o animal foi reintroduzido em ambiente natural. Conclui-se que o protocolo terapêutico utilizado na reabilitação deste espécime de tartaruga-cabeçuda foi eficiente, principalmente no que diz respeito à terapia tópica. Além disso, a partir dos exames radiográficos foi possível visualizar a evolução do processo cicatricial das fraturas ósseas, auxiliando assim na tomada de decisão em liberar o animal à natureza.

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Marine Turtles Stranded in Northeastern Brazil: Composition, Spatio-Temporal Distribution, and Anthropogenic Interactions

Cited by 16 publications

References 28 publications

Long-term monitoring of marine turtle nests in northeastern Brazil

Long-term monitoring of marine turtle nests in northeastern Brazil

Rehabilitation of a green sea turtle (Chelonia mydas) after collision with motorboat in the archipelago of Fernando de Noronha, Brazil

Reabilitação de tartaruga-cabeçuda (Caretta caretta Linnaeus, 1758) após traumatismo craniano

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