Social structure of Indo-Pacific bottlenose dolphins (Tursiops aduncus) off the south coast of Zanzibar

↓ Direkt till sidans innehåll
↓ Direkt till sidans sekundära innehåll (sidomenyn)

Sökning: WFRF:(Särnblad Anna) > Social structure of...

Nyström, Stina (författare)

Social structure of Indo-Pacific bottlenose dolphins (Tursiops aduncus) off the south coast of Zanzibar

BokEngelska

Förlag, utgivningsår, omfång ...

printrdacarrier

Nummerbeteckningar

LIBRIS-ID:oai:DiVA.org:su-60530
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-60530URI

Kompletterande språkuppgifter

Språk:engelska
Sammanfattning på:engelska

Ingår i deldatabas

SwePubSwePub

Klassifikation

Ämneskategori:vet swepub-contenttype
Ämneskategori:ovr swepub-publicationtype

Anmärkningar

The social structure of Indo-Pacific bottlenose dolphins (Tursiops aduncus) resident in Menai Bay, Zanzibar, east Africa, was investigated using group characteristics and association records collected 1999-2002. On average, groups were large compared to those reported from other bottlenose dolphin studies. Groups were also significantly larger when the dolphins exhibited socializing behavior or when calves were present, indicating that large groups could be attributed to social benefits related to reproduction and caring for calves. To investigate relationships between identified individuals, an association analysis was performed using half-weight association indices (HWIs), calculated for 67 well-marked individuals sighted 9 or more times. While the overall distribution of HWIs was skewed towards lower values, relationships were stronger and more long-term than would be expected if dolphins were associating at random. A temporal analysis, performed to model the stability of associations, suggested that these relationships may last for as long as 7 years. Multidimensional scaling and cluster analysis revealed two female clusters and a male pair that had high HWIs across all years of sampling. These preferred relationships may be formed to obtain reproductive benefits as well as safety against predators and other threats. For example, the dolphins in Menai Bay are subject to anthropogenic threats from fishing and tourism activities in the area. Unless kept at a sustainable level, such threats could ultimately disrupt the long-term relationships observed in the present study and adversely influence the health of the population.

Ämnesord och genrebeteckningar

social structure
group characteristics
association indices
bottlenose dolphins
Tursiops aduncus
NATURAL SCIENCES
NATURVETENSKAP
Animal Ecology
zoologisk ekologi

Biuppslag (personer, institutioner, konferenser, titlar ...)

Särnblad, AnnaStockholms universitet,Zoologiska institutionen(Swepub:su)sarnb (författare)
Stensland, EvaStockholms universitet,Zoologiska institutionen(Swepub:su)evaste (författare)
Jiddawi, Narriman S. (författare)
Berggren, PerStockholms universitet,Zoologiska institutionen(Swepub:su)berggren (författare)
Stockholms universitetZoologiska institutionen (creator_code:org_t)

Internetlänk

https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-60530

Till lärosätets databas

Hitta mer i SwePub

Av författaren/redakt...: Nyström, Stina; Särnblad, Anna; Stensland, Eva; Jiddawi, Narrima ...; Berggren, Per

Av lärosätet: Stockholms universitet

Sök utanför SwePub

Sök vidare i:: Google; Google Book Search; Google Scholar

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

LIBRIS.kb.se