Franciscana strandings on the north coast of Santa Catarina State and insights into birth period

Cremer, Marta Jussara; Sartori, Camila M.; Holz, Annelise C.; Schulze, Beatriz; Santos, Natacha Zimmermann; Alves, Ana Kássia Moraes; Paitach, Renan Lopes

doi:10.5007/2175-7925.2013v26n4p133

Cited by 11 publications

(8 citation statements)

References 21 publications

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“…Considering that franciscanas inhabiting Babitonga Bay apparently comprise a resident population (Cremer & Simões-Lopes, 2008), no other franciscana groups were observed in open ocean, between Florianópolis and Paranaguá (~200 km). Although these results could indicate gaps in the distribution of franciscanas in FMA II, multiyear stranding and bycatch monitoring indicate a continuous distribution of franciscanas between central SC and southern RJ (e.g., Bertozzi & Zerbini, 2002;Cremer et al, 2013;Rosas, Monteiro-Filho, & Oliveira, 2002;Santos, Vicente, Zampirolli, Alvarenga, & Souza, 2002;Simões-Lopes & Ximenez, 1993; webGIS SIMMAM, http://simmam.acad.univali.br/site/). Lack of sightings in certain areas may have occurred because of a number of factors, including the relatively small coverage of the aerial surveys as well as seasonal variation in distribution.…”

Section: Distributionmentioning

confidence: 98%

Distribution, habitat use, and abundance of the endangered franciscana in southeastern and southern Brazil

Sucunza

Danilewicz

Andriolo

et al. 2019

Marine Mammal Science

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The franciscana (Pontoporia blainvillei) is endemic to coastal waters from Brazil to Argentina. The species is regarded as one of the most threatened cetaceans in South America due to high bycatch levels. Four management units (FMAs) were defined throughout the species’ range. FMA II includes states along southeastern and southern Brazil, and represents one of the least known units. Recently, genetic analysis proposed that FMA II comprises two distinct populations and its range should be divided into FMA IIa and IIb. In December 2008 and January 2009 aerial surveys were conducted to assess the distribution and to estimate abundance of franciscanas off FMA II. A total of 54 groups were seen (average group size = 2.76, SE = 0.17) in shallow (mean depth = 7.15 m, SE = 7.08) coastal habitats (average distance from the shore = 6.48 km, SE = 6.28). Abundance corrected for perception and availability bias was estimated at 6,827 (CV = 0.26) franciscanas in FMA II, and at 1,915 (CV = 0.32) and 4,353 (CV = 0.24) franciscanas in FMA IIa and FMA IIb, respectively. This study indicates that, at least during the summer, franciscanas aggregate in shallow coastal habitats. Current estimates of incidental mortality in FMA II correspond to 4.4%–7.3% of the estimated stock size, suggesting high, likely unsustainable bycatch.

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Section: Distributionmentioning

confidence: 98%

Distribution, habitat use, and abundance of the endangered franciscana in southeastern and southern Brazil

Sucunza

Danilewicz

Andriolo

et al. 2019

Marine Mammal Science

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“…It facilitates the movement of pinnipeds from their breeding areas to the south of Brazil, where entanglement in fishing gear seems to be occurring with Antarctic seals of the species A. gazella (CROXALL;RODWELL;BOYD, 1990). Similar facts are reported for Australian seals A.…”

Section: Discussionmentioning

confidence: 65%

Stranding of Marine Mammals in the Period From 2003 to 2016, in the South Ern Coast of Santa Catarina, Brazil

Freitas

Cancillier

Sá

et al. 2021

Int J Innov Educ Res

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Stranding is the event in which a marine animal comes ashore after death or comes and is unable to return to the sea, which may occur due to natural, spatial tendencies and anthropic actions. It occurs in many countries, several of which have created formal programs to monitor. Mammals are at the top of the food chain, suffering more from changes in the environment, which is why they indicate the quality of the ecosystem. In the southern region of Brazil, inventories of marine mammal biodiversity emerged in the 1980s. Registering stranded data makes it possible to discover important information about marine animals and the oceans. This work aimed to collect information to identify the composition and abundance of strandings of marine mammals. The studied area is located on the southern coast of Santa Catarina, between the municipality of Jaguaruna and Passo de Torres. Data refer to collections made by the Zoology Museum Morgana Cirimbelli Gaidzinski , from the University of the Extreme South of Santa Catarina (UNESC), during the period from 2003 to 2016, through third-party activations and systematic monthly monitoring. The stranding frequency in this period was 344 mammals, belonging to 15 species, 10 genera, six families and two different orders. The occurrence of rare and unpublished animals was observed, such as Balaenoptera physalus, Kogia breviceps and Arctocephalus gazela.

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“…In northeast Brazil, these records have become priority in the last two decades, with the strengthening of the REMANE (Batista, Schiavetti, Santos, & Reis, 2012;Meirelles et al, 2009;Meirelles, Ribeiro, Siva, & Soares Filho 2010;Monteiro-Neto et al, 2000). Some small cetacean and sirenian species are incidentally captured in fishing nets because of their coastal habits (Adulyanukosol, Prasittipornkul, Man-Anansap, & Boukaew, 2009;Borgonia, Moreira, & Barreto, 2002;Cremer et al, 2013;Danilewicz et al, 2009;Dawson, 2006;Rodas-Trejo, Romero-Berny, & Estrada, 2008;Rojas-Bracho, Reeves, & Jaramillo-Legorreta, 2006;Rosas, Monteiro-Filho, & Oliveira, 2002). For the Antillean manatee, interaction with fisheries is also a cause of stranding and death of young and adult specimens in Brazil and in other countries (Castelblanco-Martinez et al, 2009;de Thoisy et al, 2003;Marsh & Lefebvre, 1994;Mignucci-Giannoni et al, 2000).…”

Section: Dead Manateesmentioning

confidence: 99%

Three Decades of Antillean Manatee (Trichechus manatus manatus) Stranding Along the Brazilian Coast

Balensiefer

Attademo

Sousa

et al. 2017

Tropical Conservation Science

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Alive Antillean manatee stranding is one of the main challenges for the conservation of the species in Brazil. In the present study, data on Antillean manatee stranding recorded by the CMA/ICMBio's Wild Animals Rehabilitation Center from 1987 to 2015 were analyzed. The CMA and the REMANE's (Northeastern Aquatic Mammal Stranding Network's) institutions have rescued on average five Antillean manatees per year. Approximately 56% of the animals were alive when rescued, and 43.7% were found dead. The states of Ceará and Rio Grande do Norte have the highest records of stranding, rescue, and assistance of alive calves. Stranding of alive specimens is more frequent during the austral summer, especially in January, February, and March. In the North region, the main threat to the Antillean manatee population seems to be interaction with fishing activities. Studies on the causes of dependent calf stranding in northeast Brazil are urgently needed to promote the development of public policies for the conservation of the species. Brazil's manatee rehabilitation centers must undergo improvements to better assist stranded calves, which need special care to survive.

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Franciscana strandings on the north coast of Santa Catarina State and insights into birth period

Cited by 11 publications

References 21 publications

Distribution, habitat use, and abundance of the endangered franciscana in southeastern and southern Brazil

Distribution, habitat use, and abundance of the endangered franciscana in southeastern and southern Brazil

Stranding of Marine Mammals in the Period From 2003 to 2016, in the South Ern Coast of Santa Catarina, Brazil

Three Decades of Antillean Manatee (Trichechus manatus manatus) Stranding Along the Brazilian Coast

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