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DUSKY DOLPHIN FACTS    Lagenorhynchus obscurus                              BIOEXPEDITION.COM
Dusky Dolphin                BIOEXPEDITION.COM
Dusky DolphinIT’S FOUND IN COASTAL WATERS IN THE SOUTHERNHEMISPHERE.IT IS VERY CLOSELY GENETICALLY RELATED TO THEPACIFIC W...
AnatomyDUSKY DOLPHINS ARE SMALL AND MODERATELYROBUST.THEY ARE UP TO 6 FEET IN LENGTH AND 210 POUNDSIN WEIGH.              ...
AnatomyA DUSKY DOLPHIN HAS A BLUISH-BLACK TAIL ANDBACK.THE UNDERSIDE IS WHITE AND THE TIPS OF THESNOUT AND LOWER JAW ARE D...
HabitatTHE DUSKY DOLPHIN IS A COASTAL SPECIES.USUALLY FOUND OVER CONTINENTAL SHELVESAND SLOPES.DUSKY DOLPHINS ARE USUALLY ...
HabitatTHE LAGENORHYNCHUS OBSCURUS COVERS THECOASTS OF      SOUTH AMERICA      AUSTRALIA      AFRICA      TASMANIA      NE...
BehaviorTHE DUSKY DOLPHIN IS A VERY SOCIAL SPECIES.THEY ARE USUALLY FOUND IN GROUPS BETWEEN 25AND 500 INDIVIDUALS, BUT HAV...
BehaviorTHIS DOLPHIN IS KNOWN FOR ITS REMARKABLEAERIAL ACROBATICS.THREE DIFFERENT TYPES OF SOUNDS ARE PRODUCEDBY DUSKY DOL...
Feeding THE MAIN PREY SPECIES OF DUSKY DOLPHINS INCLUDE:     • ANCHOVY       SHRIMP       SQUID       VARIETY OF FISH.• TH...
FeedingDUSKY DOLPHINS ARE USUALLY COORDINATEHUNTERS. CO-OPERATIVE FEEDING IS PERFORMEDREGULARLY IN SOME AREAS.THESE DOLPHI...
ReproductionMATING IS BELIEVED TO OCCUR IN SPRING.MATING GROUPS ARE GENERALLY MADE OF AROUNDTEN MALES AND A SINGLE FEMALE....
Reproduction    A SINGLE CALF IS BORN AFTER A GESTATION PERIOD OF 11    MONTHS.       •   THE CALF RANGES IN BODY LENGTH F...
ThreatsTHOUSANDS OF DUSKY DOLPHINS ARE KILLEDANNUALLY BY THE SMALL-CETACEAN FISHERY INPERU.THE INCIDENTAL CATCH, POLLUTION...
ThreatsDUSKY DOLPHINS ARE LISTED AS DATA DEFICIENT BYTHE IUCN BUT ARE PROTECTED IN MUCH OF ITSRANGE.                      ...
Find Us                       BioExpedition.com                       Facebook.com/bioexpedition                       Twi...
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Dusky Dolphin Facts

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http://goo.gl/dFNt6 - Dusky Dolphin Facts (Lagenorhynchus obscurus) The Dusky Dolphin is very closely related to the Pacific White Sided Dolphin. However, the scientific studies conducted show that there are enough variations for them to be classified as two separate species. - Visit us: http://goo.gl/ZkZz7
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Transcript of "Dusky Dolphin Facts"

  1. 1. DUSKY DOLPHIN FACTS Lagenorhynchus obscurus BIOEXPEDITION.COM
  2. 2. Dusky Dolphin BIOEXPEDITION.COM
  3. 3. Dusky DolphinIT’S FOUND IN COASTAL WATERS IN THE SOUTHERNHEMISPHERE.IT IS VERY CLOSELY GENETICALLY RELATED TO THEPACIFIC WHITE-SIDED DOLPHIN BIOEXPEDITION.COM
  4. 4. AnatomyDUSKY DOLPHINS ARE SMALL AND MODERATELYROBUST.THEY ARE UP TO 6 FEET IN LENGTH AND 210 POUNDSIN WEIGH. BIOEXPEDITION.COM
  5. 5. AnatomyA DUSKY DOLPHIN HAS A BLUISH-BLACK TAIL ANDBACK.THE UNDERSIDE IS WHITE AND THE TIPS OF THESNOUT AND LOWER JAW ARE DARK.THEY HAVE 24-36 PAIRS OF SMALL TEETH. BIOEXPEDITION.COM
  6. 6. HabitatTHE DUSKY DOLPHIN IS A COASTAL SPECIES.USUALLY FOUND OVER CONTINENTAL SHELVESAND SLOPES.DUSKY DOLPHINS ARE USUALLY FOUND IN WARMTO COOL TEMPERATE WATERS BIOEXPEDITION.COM
  7. 7. HabitatTHE LAGENORHYNCHUS OBSCURUS COVERS THECOASTS OF SOUTH AMERICA AUSTRALIA AFRICA TASMANIA NEW ZEALAND OCEANIA ISLANDS. BIOEXPEDITION.COM
  8. 8. BehaviorTHE DUSKY DOLPHIN IS A VERY SOCIAL SPECIES.THEY ARE USUALLY FOUND IN GROUPS BETWEEN 25AND 500 INDIVIDUALS, BUT HAVE BEEN OCCASIONALLYSEEN IN LARGER GROUPS OF UP TO 1000 INDIVIDUALS.DUSKY DOLPHINS ARE HIGHLY CURIOUS AND USUALLYEASY TO APPROACH. BIOEXPEDITION.COM
  9. 9. BehaviorTHIS DOLPHIN IS KNOWN FOR ITS REMARKABLEAERIAL ACROBATICS.THREE DIFFERENT TYPES OF SOUNDS ARE PRODUCEDBY DUSKY DOLPHINS: CLICK TRAINS, BURST PULSESAND WHISTLES.THEY ARE ESPECIALLY ATTRACTED TO BOATS.REACHING SPEEDS UP TO 20 KNOTS. BIOEXPEDITION.COM
  10. 10. Feeding THE MAIN PREY SPECIES OF DUSKY DOLPHINS INCLUDE: • ANCHOVY SHRIMP SQUID VARIETY OF FISH.• THIS SPECIES MAY ALSO FEED AT NIGHT. BIOEXPEDITION.COM
  11. 11. FeedingDUSKY DOLPHINS ARE USUALLY COORDINATEHUNTERS. CO-OPERATIVE FEEDING IS PERFORMEDREGULARLY IN SOME AREAS.THESE DOLPHINS USE THEIR ECHOLOCATION TODETECT AND ISOLATE AN INDIVIDUAL PREY. BIOEXPEDITION.COM
  12. 12. ReproductionMATING IS BELIEVED TO OCCUR IN SPRING.MATING GROUPS ARE GENERALLY MADE OF AROUNDTEN MALES AND A SINGLE FEMALE. BIOEXPEDITION.COM
  13. 13. Reproduction A SINGLE CALF IS BORN AFTER A GESTATION PERIOD OF 11 MONTHS. • THE CALF RANGES IN BODY LENGTH FROM 55 TO 70 CENTIMETRES AT BIRTH. • THE LACTATION PERIOD LASTS FOR 18 MONTHS.• CALVES ARE PARTICULARLY VULNERABLE TO PREDATORS LIKE KILLER WHALES AND SHARKS BIOEXPEDITION.COM
  14. 14. ThreatsTHOUSANDS OF DUSKY DOLPHINS ARE KILLEDANNUALLY BY THE SMALL-CETACEAN FISHERY INPERU.THE INCIDENTAL CATCH, POLLUTION AND TOURISMARE THE GREATEST THREATS TO THE DUSKYDOLPHIN. BIOEXPEDITION.COM
  15. 15. ThreatsDUSKY DOLPHINS ARE LISTED AS DATA DEFICIENT BYTHE IUCN BUT ARE PROTECTED IN MUCH OF ITSRANGE. BIOEXPEDITION.COM
  16. 16. Find Us BioExpedition.com Facebook.com/bioexpedition Twitter.com/bioexpedition Youtube.com/bioexpedition Pinterest.com/bioexpedition Dolphins-world.com• Copyright© Bioexpedition.com 2012
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