Biology Reference
In-Depth Information
decreases near construction areas and Wang and Zhao (chapter 19) provide an analysis of the
possible effectiveness of several conservation methods over the last three decades regarding
in situ, ex situ and captive breeding. Each of these negative factors contribute to group
fragmentation and genetic isolation of this species.
Taxonomy: of Neophocaena phocaenoides
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Cetacea
Suborder: Odontoceti ―toothed whales‖
Family: Phocoenidae (porpoises)
Genus: Neophocaena
Species: Neophocaena phocaenoides (G. cuvier 1829)
Subspecies: Neophocaena phocaenoides asiaeorientalis
Sotalia guianensis (Marine Tucuxi Dolphin)
Marine tucuxi dolphins are small bodied delphinids with a maximum body length of
about 2 meters (Figure 2) (Barros, 1991). Their dorsum is dark gray, while their ventral area
is gray, white, or pinkish. They have a poorly developed lateral stripe, moderately long and
slender beak, a triangular dorsal fin, and great muscle mass.
Figure 2. A Sotalia guianensis playing in Manzanillo, Costa Rica. (copyright Susana Caballero).
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