Estrutura populacional da Balaenoptera bonaerensis (Burmeister) (Cetacea, Balaenopteridae) nas áreas de reprodução do Oceano Atlântico Sul

Lucena, Alineide

doi:10.1590/s0101-81752006000100009

Cited by 3 publications

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References 3 publications

(5 reference statements)

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“…Examination of reproductive organs of whales processed in Costinha showed that both males and females were reproductively active off Brazil (WILLIAMSON 1975, DA ROCHA & BRAGA 1982, LUCENA 2006. Despite that, minke whale calves are not easily observed, which is unusual for an area considered a breeding ground.…”

Section: Discussionmentioning

confidence: 99%

Distribution and relative abundance of large whales in a former whaling ground off eastern South America

Andriolo¹,

Rocha²,

Zerbini³

et al. 2010

Zoologia (Curitiba, Impr.)

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Ship-based sighting surveys for cetaceans were conducted in the former whaling ground off the northeastern coast of Brazil. The cruises took place in winter and spring of 1998-2001 with the objectives of investigating current distribution and abundance of cetaceans, particularly large whale species taken during whaling. In 1998 the survey were conducted between the parallels 5°30'W and 9°S and the 200 m isobath and the meridian 033°W. A total of about 3,100 nm were surveyed between 1998 and 2001 Surveys were conducted using line transect methods from about 5-10°S, and from the coast to 33°W. A total of 151 sightings (203 individuals) of large whales were recorded on effort. The Antarctic minke whale - Balaenoptera bonaerensis (Burmeister, 1867) was the most frequently sighted species (97 groups/132 individuals; Sighting Rate [SR] = 0.031 groups/nm), being recorded only in offshore waters. Density gradually increased from August to October. Minke whales were distributed throughout the area, both to the north and the south of former whaling ground. Sighting data indicate this is the most abundant species, particularly in the area beyond the continental shelf break. Breeding behavior was observed for Antarctic minke whales, but few groups containing calves were recorded (4.3% of the groups sighted on effort). Three other large whale species were recorded in low numbers: the Bryde's whale - Balaenoptera edeni (Anderson, 1879)¹; the sei whale, B. borealis (Lesson, 1828), and the sperm, Physeter macrocephalus (Linnaeus, 1758). Sei, Bryde and sperm whales were regularly caught during whaling operations, but are rare in the area, suggesting they were depleted by whaling and have yet to recover to their pre-explotation abundance. In contrast, minke whales are abundant in this area, suggesting that either they were not substantially depleted, or that they have recovered rapidly. Blue whale, Balaenoptera musculus (Linnaeus, 1758), and fin whale, B. physalus (Linnaeus, 1758), not recorded on our surveys, have always been extremely rare in the area

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Section: Discussionmentioning

confidence: 99%

Distribution and relative abundance of large whales in a former whaling ground off eastern South America

Andriolo¹,

Rocha²,

Zerbini³

et al. 2010

Zoologia (Curitiba, Impr.)

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“…In Brazil, the northeast region has been considered a breeding area for the species (Horwood, 1990;Lucena, 2006), and individuals are often sighted in oceanic waters between 200 and 1,000 m depth and in greater numbers between August and October (Andriolo et al, 2010). This species is listed as data deficient by the International Union for Conservation of Nature (IUCN) (Reilly et al, 2008), and it is currently the most abundant mysticete in the Southern Hemisphere (Beekmans et al, 2010).…”

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Short Note: Antarctic Minke Whale (Balaenoptera bonaerensis, Burmeister, 1867) in the Tapajós River, Amazon Basin, Brazil

Balensiefer¹,

Marcondes²,

Pretto³

et al. 2014

Aquat Mamm

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Stranding survey as a framework to investigate rare cetacean records of the north and north-eastern Brazilian coasts

Costa¹,

Siciliano²,

Emin-Lima³

et al. 2017

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Marine mammal stranding events are used as an important tool for understanding cetacean biology worldwide. Nonetheless, there are vast gaps of knowledge to be filled in for a wide range of species. Reputable information is required regarding species from large baleen whales to sperm and beaked whales, as well as pelagic dolphins. This paper describes new cetacean records from north and north-eastern Brazil, which are both the least surveyed areas regarding aquatic mammals. Regular beach surveys were conducted to recover cetacean carcasses along the coast of Pará beginning November 2005. At the coasts of the Maranhão and Piauí states, the surveys were conducted between 2003 and 2013. From 2003 to 2014, 34 strandings of cetaceans were registered. The study provides four additional species records’ in the area based on strandings (Balaenoptera borealis, Balaenoptera physalus, Peponocephala electra, and Pseudorca crassidens). A mass stranding of Guiana dolphins (Sotalia guianensis, N = 12), the most common species for the region, was reported for the first time. The records presented herein are of special concern, since they expand the knowledge on cetaceans from the Brazilian coast. In addition, this study conducted an analysis to verify the similarity between cetacean compositions described for north and north-eastern Brazil and the southern Caribbean region. The results showed a high similarity between these regions, proving the connection with the Caribbean cetacean fauna.

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Estrutura populacional da Balaenoptera bonaerensis (Burmeister) (Cetacea, Balaenopteridae) nas áreas de reprodução do Oceano Atlântico Sul

Cited by 3 publications

References 3 publications

Distribution and relative abundance of large whales in a former whaling ground off eastern South America

Distribution and relative abundance of large whales in a former whaling ground off eastern South America

Short Note: Antarctic Minke Whale (Balaenoptera bonaerensis, Burmeister, 1867) in the Tapajós River, Amazon Basin, Brazil

Stranding survey as a framework to investigate rare cetacean records of the north and north-eastern Brazilian coasts

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