Reproductive Behavior in a Captive-Released Manatee (&lt;I&gt;Trichechus manatus manatus&lt;/I&gt;) along the Northeastern Coast of Brazil and the Life History of Her First Calf Born in the Wild

Lima, Renato Paiva de; Alvite, Carolina M. C.; Vergara-Parente, Jociery Einhardt; Castro, Denise F.; Paszkiewicz, E.; Gonzalez, M. Teresa

doi:10.1578/am.31.4.2005.420

Cited by 13 publications

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“…Estas evidências foram reforçadas por Lima et al (2005) durante o monitoramento de uma fêmea desta espécie e seu filhote, onde após quatro dias da ocasião do nascimento, foi constatado o aumento do número de embarcações no local em que estes permaneciam, o que contribuiu para a separação dos indivíduos, culminando na morte do espécime recém-nascido. Os animais deste estudo correspondem apenas aos filhotes que são resgatados e monitorados pelo CMA/ IBAMA, portanto as colisões descritas representam apenas o impacto direto observado, não sendo estimado a possibilidade deste evento ter ocorrido com populações nativas, sem que tenham sido notificados.…”

Section: Discussionunclassified

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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Section: Discussionunclassified

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

et al. 2007

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“…19,21 Antillean manatee calves are sensitive to changes in their habitat and, therefore, the degradation of estuarine environments in the Northeastern region is identified as a triggering factor of stranding events. 17,19,21 The difficulties that this species finds in the use of many estuaries, which are considered natural nurseries for these animals, affect an important part of their life cycle from birth throughout the period of parental care. 16 As a conservation strategy for this species, stranded calves are rescued and taken to the Rescue and Rehabilitation Unit of the Aquatic Mammal Center-ICMBio, located in the state of Pernambuco, Brazil.…”

Section: Introductionmentioning

confidence: 99%

**GROWTH PATTERN DIFFERENCES OF CAPTIVE BORN ANTILLEAN MANATEE (TRICHECHUS MANATUS) CALVES AND THOSE RESCUED IN THE BRAZILIAN NORTHEASTERN COAST**

Borges¹,

Freire²,

Attademo³

et al. 2012

Journal of Zoo and Wildlife Medicine

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The aim of this work was to analyze whether there are differences between the development pattern of Antillean manatee (Trichechus manatus) calves born in captivity and those rescued and kept under rehabilitation. Biometrics data were collected from 1990 to 2010 from 38 calves, 29 of which still had the remnants of the umbilical cord and had been rescued from the Brazilian northeastern coastline (Group I), and nine individuals that were born in captivity and remained with their mothers (Group II). Among the measures obtained through biometry, the total length and weight of the animal were recorded. Given that the breastfeeding of calves occurs approximately until the age of 2 yr, data obtained until the 24th month of life of each individual were evaluated. An average increase in weight of 53.50 +/- 38.54 kg (mean +/- standard deviation [SD]) was detected in Group I and a gain of 106.87 +/- 47.21 kg (mean +/- SD) in Group II. From months 13 to 24, no significant difference in the weight increment was observed. A similar pattern occurred with regard to the increase in the overall length during the first year, where animals from Group I grew 34.81 +/- 17.94 cm (mean +/- SD) and from Group II grew 83.83 +/- 28.21 cm, a statistically significant difference. The growth was not significantly different from 13 to 24 mo. The results found in this study identified the need for a review of the nutritional diet offered to orphaned calves rescued and kept in captivity. The results also support the need for a better adequacy of facilities for these animals as a way to encourage the management strategies adopted for manatee calves maintained in captivity.

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“…According to REID & O´SHEA (1989), PTT were much more effective than conventional telemetry radio for tracking rapid motions of animals whose displacements reached hundreds of kilometers when monitoring manatees in Florida/USA. Some animals (FOLIA and PIPA) tracked only by VHF radio system and regarded as missed after a short-term monitoring, could have been found by using satellite telemetry system, as recommended after the monitoring experience with ASSÚ & TICO (ALVITE et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

Spatial and temporal distribution of manatees (trichechus manatus) reintroduced in the northeastern coast of Brazil

et al. 2015

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Many West Indian manatees (Trichechus manatus) that strand along the northeast Brazilian coast are calves, which are often rescued and carried to the Peixe-Boi Project rehabilitation facilities in Itamaracá, Pernambuco State where they are prepared to reintroduction. During the ten years period of October 1994 to December 2004, thirteen captive manatees were radio tagged, released and tracked in three main northeast coastal areas as part of the Brazilian Manatee Reintroduction Program. All individuals were monitored locally with VHF transmitters, during brief periods, four were also tracked remotely with satellite-monitored radio tags. Five manatees (39.5%) had long-term tracks over 14 months or 420 days (Total= 10166 days; Maximum=2663 days; Mean=2031 days; SD=1572 days) that met criteria for inclusion in analyses of spatial and seasonal movement patterns. Manatees were tracked from Praia do Forte, Bahia (12.538ºS/38.474ºW) to Macau, Rio Grande do Norte (5.084ºS/36.682ºW), covering around 1200 km and six states along the northeast coast. Three manatees occupied large home ranges, with each containing a few sites of high fidelity where they spent considerable time, while two used restrict home range having only one site with high fidelity. Others two manatees not showed movements along coast and occupied a restrict area like their fidelity site. Two manatees with short tracking histories showed visible weight loss soon after release and were recaptured after having moved long distances, including offshore movements into deep waters. The high rate of survival for released manatees, their adaptation to areas within the former range of wild manatees, and birth of a calf to a released captive manatee are indicators of the success of the Brazilian Manatee Reintroduction Program.KEYWORDS: Peixe-boi; Manatee; Manati; Reintrodução; Monitoramento. .682ºW), cobrindo cerca de 1200 km e seis estados ao longo da costa nordeste. Três peixes-boi ocupou grandes áreas de uso, com cada uma contendo alguns sites de alta fidelidade onde passaram um tempo considerável, enquanto dois usados ? gama restringir casa ter apenas um site com alta fidelidade. Outros dois peixes-boi não mostrou movimentos ao longo da costa e ocupava uma área restrita, como seu site fidelidade. Dois peixes-boi com histórias curtas de rastreamento mostraram perda de peso visível logo após o lançamento e foram re-capturado depois de ter movido longas distâncias, incluindo os movimentos no mar em águas profundas. A alta taxa de sobrevivência de peixesboi liberados, a sua adaptação às áreas dentro da escala anterior de peixes-boi selvagem, e nascimento de um bezerro de um peixe-boi em cativeiro liberados são indicadores do sucesso do Programa Brasileiro Reintrodução do peixe-boi. Reviewed anonymously in the process of blind peer. DISTRIBUIÇÃO ESPACIAL E TEMPORAL DE PEIXES-BOI (TRICHECHUS MANATUS) PALAVRAS-CHAVE:Referencing this:LIMA, R. P.; ALVITE, C. M. C.; REID, J. P.; BOMBASSARO JUNIOR, A.. Spatial and temporal distribution of manatees (trichechus mana...

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Reproductive Behavior in a Captive-Released Manatee (<I>Trichechus manatus manatus</I>) along the Northeastern Coast of Brazil and the Life History of Her First Calf Born in the Wild

Cited by 13 publications

References 0 publications

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

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

**GROWTH PATTERN DIFFERENCES OF CAPTIVE BORN ANTILLEAN MANATEE (TRICHECHUS MANATUS) CALVES AND THOSE RESCUED IN THE BRAZILIAN NORTHEASTERN COAST**

Spatial and temporal distribution of manatees (trichechus manatus) reintroduced in the northeastern coast of Brazil

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