Sincraniometry of pygmy sperm whale, Kogia breviceps (Odontoceti, Kogiidae), in the coast of Bahia, northeastern Brazil

The present work analyzes the sincranio of an adult male of pygmy sperm whale, Kogia breviceps, stranded in the state of Bahia. The cranial measures were taken with aid of a caliper accurately of 0,05mm. The condylobasal length (CCB) found was of 426mm. The relationship between the length of the ros...

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Bibliographic Details
Published in:SITIENTIBUS série Ciências Biológicas
Main Author: Souto, Luciano Raimundo Alardo
Format: Article in Journal/Newspaper
Language:Portuguese
Published: Universidade Estadual de Feira de Santana 2009
Subjects:
Cachalote
Nordeste
Ramos
cachalote
Sperm whale
Online Access:http://periodicos.uefs.br/index.php/sitientibusBiologia/article/view/8002
https://doi.org/10.13102/scb8002
Description
Summary:The present work analyzes the sincranio of an adult male of pygmy sperm whale, Kogia breviceps, stranded in the state of Bahia. The cranial measures were taken with aid of a caliper accurately of 0,05mm. The condylobasal length (CCB) found was of 426mm. The relationship between the length of the rostrum and CCB was below the expected (58%) and it can be a consequence of geographical differences. The symphysis mandibular came no fused, measuring 123,8mm. The branches mandibles with the broken extremities presented, respectively, 11 and 9 alveolus in the left and right sides. This is the first record syncranial of K. breviceps for the state of Bahia, contributing like this, with information about the species in Atlantic Ocean Western South. O presente trabalho analisa o sincrânio de um macho adulto de cachalote-pigmeu, Kogia breviceps encalhado no Estado da Bahia. As medidas cranianas foram tomadas com auxílio de um paquímetro com precisão de 0,05mm. O comprimento côndilo-basal (CCB) encontrado foi de 426mm. A relação entre o comprimento do rostro e o CCB ficou abaixo do esperado (58%) e pode ser decorrente de diferenças geográficas. A sínfise mandibular apresentava-se não fusionada, medindo 123,8mm. Os ramos mandibulares com as extremidades quebradas apresentavam, respectivamente, 11 e 9 alvéolos nos lados esquerdo e direito respectivamente. Este é o primeiro registro sincraniano de K. breviceps para o estado da Bahia, contribuindo assim, com informações sobre a espécie no Atlântico Sul Ocidental.

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