Species-Specificity in Communication Calls of Tree Shrews (<i>Tupaia</i>: Scandentia)

Esser, D.; Schehka, Simone; Zimmermann, Elke

doi:10.1644/07-mamm-a-360.1

Cited by 11 publications

(5 citation statements)

References 61 publications

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“…In our study, we provided an example of the use of ultrasonic calls as a potential means; however, other features such as audible calls (e.g. Esser et al 2008) or habitat preferences (e.g. Blacket et al 2008) might also prove useful.…”

Section: Discussionmentioning

confidence: 99%

Shedding new light on old species identifications: morphological and genetic evidence suggest a need for conservation status review of the critically endangered bat, Saccolaimus saccolaimus

Milne¹,

Jackling

Sidhu

et al. 2009

Wildl. Res.

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Information based on the accurate identification of species is a vital component for achieving successful outcomes of biodiversity conservation and management. It is difficult to manage species that are poorly known or that are misidentified with other similar species. This is particularly problematic for rare and threatened species. Species that are listed under endangered species classification schemes need to be identified accurately and categorised correctly so that conservation efforts are appropriately allocated. In Australia, the emballonurid Saccolaimus saccolaimus is currently listed as 'Critically Endangered'. On the basis of new observations and existing museum specimens, we used a combination of genetic (mitochondrial DNA sequence) and morphological (pelage characteristics, dig III : phalanx I length ratio, interupper canine distance) analyses to identify six new geographic records for S. saccolaimus, comprising~100 individuals. Our analyses also suggested that there are likely to be more records in museum collections misidentified as S. flaviventris specimens. The external morphological similarities to S. flaviventris were addressed and genetic, morphological and echolocation analyses were used in an attempt to provide diagnostic characters that can be used to readily identify the two species in the field. We recommend genetic testing of all museum specimens of Australian Saccolaimus to clarify species' distributions and provide data for reassessing the conservation status for both S. saccolaimus and S. flaviventris. Museum curators, taxonomists and wildlife managers need to be aware of potential species misidentifications, both in the field and laboratory. Misidentifications that result in misclassification of both threatened and non-threatened species can have significant implications.

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Section: Discussionmentioning

confidence: 99%

Shedding new light on old species identifications: morphological and genetic evidence suggest a need for conservation status review of the critically endangered bat, Saccolaimus saccolaimus

Milne¹,

Jackling

Sidhu

et al. 2009

Wildl. Res.

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“…Morphologically similar but acoustically divergent species are widespread. In the tropical forest of southeast Asia, 2 species of tree shrews, Tupaia glis and T. belangeri , are morphologically similar but display acoustic divergence in the loud chatter call ( Esser et al 2008 ). Similarly in Malaysia, a population of bicolored leaf-nosed bats ( Hipposideros bicolor ) that are hard to distinguish morphologically but are genetically distinct can be separated on the basis of 2 different vocal types.…”

mentioning

confidence: 99%

Temporal segregation of the Australian and Antarctic blue whale call types (Balaenoptera musculusspp.)

Tripovich¹,

Klinck²,

Nieukirk³

et al. 2015

JMAMMAL

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We examined recordings from a 15-month (May 2009–July 2010) continuous acoustic data set collected from a bottom-mounted passive acoustic recorder at a sample frequency of 6kHz off Portland, Victoria, Australia (38°33′01″S, 141°15′13″E) off southern Australia. Analysis revealed that calls from both subspecies were recorded at this site, and general additive modeling revealed that the number of calls varied significantly across seasons. Antarctic blue whales were detected more frequently from July to October 2009 and June to July 2010, corresponding to the suspected breeding season, while Australian blue whales were recorded more frequently from March to June 2010, coinciding with the feeding season. In both subspecies, the number of calls varied with time of day; Antarctic blue whale calls were more prevalent in the night to early morning, while Australian blue whale calls were detected more often from midday to early evening. Using passive acoustic monitoring, we show that each subspecies adopts different seasonal and daily call patterns which may be related to the ecological strategies of these subspecies. This study demonstrates the importance of passive acoustics in enabling us to understand and monitor subtle differences in the behavior and ecology of cryptic sympatric marine mammals.

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“…90%). This result shows a higher level of species specificity than several studies that investigated vocal signals between closely related species [Ambrose, 2003;Esser et al, 2008;Méndez-Cárdenas et al, 2008;Pozzi et al, 2013]. Interestingly, no significant difference was found between the calls emitted in mainland Tanzania (Udzungwa Mountains NP and Pugu Hills FR) and Zanzibar (Jozani Chwaka Bay NP).…”

Section: Acoustic Analysesmentioning

confidence: 49%

Species Boundaries within Morphologically Cryptic Galagos: Evidence from Acoustic and Genetic Data

Pozzi¹,

Disotell²,

Bearder³

et al. 2019

IJFP

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Describing primate biodiversity is one of the main goals in primatology. Species are the fundamental unit of study in phylogeny, behaviour, ecology and conservation. Identifying species boundaries is particularly challenging for nocturnal taxa where only subtle morphological variation is present. Traditionally, vocal signals have been used to identify species within nocturnal primates: species-specific signals often play a critical role in mate recognition, and they can restrict gene flow with other species. However, little research has been conducted to test whether different "acoustic forms" also represent genetically distinct species. Here, we investigate species boundaries between two putative highly cryptic species of Eastern dwarf galagos (Paragalago cocos and P. zanzibaricus). We combined vocal and genetic data: molecular data included the complete mitochondrial cytochrome b gene (1,140 bp) for 50 samples across 11 localities in Kenya and Tanzania, while vocal data comprised 221 vocalisations recorded across 8 localities. Acoustic analyses showed a high level of correct assignation to the putative species (approx. 90%), while genetic analyses identified two separate clades at the mitochondrial level. We conclude that P. cocos and P. zanzibaricus represent two valid cryptic species that probably underwent speciation in the Late Pliocene while fragmented in isolated populations in the eastern forests.

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Species-Specificity in Communication Calls of Tree Shrews (Tupaia: Scandentia)

Cited by 11 publications

References 61 publications

Shedding new light on old species identifications: morphological and genetic evidence suggest a need for conservation status review of the critically endangered bat, Saccolaimus saccolaimus

Shedding new light on old species identifications: morphological and genetic evidence suggest a need for conservation status review of the critically endangered bat, Saccolaimus saccolaimus

Temporal segregation of the Australian and Antarctic blue whale call types (Balaenoptera musculusspp.)

Species Boundaries within Morphologically Cryptic Galagos: Evidence from Acoustic and Genetic Data

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