Evidence for reproductive philopatry in the bull shark Carcharhinus leucas

B. J. Tillett; M. G. Meekan; I. C. Field; D. C. Thorburn; J. R. Ovenden

doi:10.1111/j.1095-8649.2012.03228.x

Evidence for reproductive philopatry in the bull shark Carcharhinus leucas

B. J. Tillett^*, M. G. Meekan, I. C. Field, D. C. Thorburn, J. R. Ovenden

^*Corresponding author for this work

Faculty of Science and Engineering

Research output: Contribution to journal › Article › peer-review

104 Citations (Scopus)

Abstract

Reproductive philopatry in bull sharks Carcharhinus leucas was investigated by comparing mitochondrial (NADH dehydrogenase subunit 4, 797 base pairs and control region genes 837 base pairs) and nuclear (three microsatellite loci) DNA of juveniles sampled from 13 river systems across northern Australia. High mitochondrial and low microsatellite genetic diversity among juveniles sampled from different rivers (mitochondrial φ _ST = 0·0767, P < 0·05; microsatellite F _ST = -0·0022, P > 0·05) supported female reproductive philopatry. Genetic structure was not further influenced by geographic distance (P > 0·05) or long-shore barriers to movement (P > 0·05). Additionally, results suggest that C. leucas in northern Australia has a long-term effective population size of 11 000-13 000 females and has undergone population bottlenecks and expansions that coincide with the timing of the last ice-ages.

Original language	English
Pages (from-to)	2140-2158
Number of pages	19
Journal	Journal of Fish Biology
Volume	80
Issue number	6
DOIs	https://doi.org/10.1111/j.1095-8649.2012.03228.x
Publication status	Published - May 2012

Keywords

Estuary
Microsatellites
Mitochondria
Northern Australia population
Predator
Structure

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10.1111/j.1095-8649.2012.03228.x

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title = "Evidence for reproductive philopatry in the bull shark Carcharhinus leucas",

abstract = "Reproductive philopatry in bull sharks Carcharhinus leucas was investigated by comparing mitochondrial (NADH dehydrogenase subunit 4, 797 base pairs and control region genes 837 base pairs) and nuclear (three microsatellite loci) DNA of juveniles sampled from 13 river systems across northern Australia. High mitochondrial and low microsatellite genetic diversity among juveniles sampled from different rivers (mitochondrial φ ST = 0·0767, P < 0·05; microsatellite F ST = -0·0022, P > 0·05) supported female reproductive philopatry. Genetic structure was not further influenced by geographic distance (P > 0·05) or long-shore barriers to movement (P > 0·05). Additionally, results suggest that C. leucas in northern Australia has a long-term effective population size of 11 000-13 000 females and has undergone population bottlenecks and expansions that coincide with the timing of the last ice-ages.",

keywords = "Estuary, Microsatellites, Mitochondria, Northern Australia population, Predator, Structure",

author = "Tillett, {B. J.} and Meekan, {M. G.} and Field, {I. C.} and Thorburn, {D. C.} and Ovenden, {J. R.}",

year = "2012",

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language = "English",

volume = "80",

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AU - Tillett, B. J.

AU - Meekan, M. G.

AU - Field, I. C.

AU - Thorburn, D. C.

AU - Ovenden, J. R.

PY - 2012/5

Y1 - 2012/5

N2 - Reproductive philopatry in bull sharks Carcharhinus leucas was investigated by comparing mitochondrial (NADH dehydrogenase subunit 4, 797 base pairs and control region genes 837 base pairs) and nuclear (three microsatellite loci) DNA of juveniles sampled from 13 river systems across northern Australia. High mitochondrial and low microsatellite genetic diversity among juveniles sampled from different rivers (mitochondrial φ ST = 0·0767, P < 0·05; microsatellite F ST = -0·0022, P > 0·05) supported female reproductive philopatry. Genetic structure was not further influenced by geographic distance (P > 0·05) or long-shore barriers to movement (P > 0·05). Additionally, results suggest that C. leucas in northern Australia has a long-term effective population size of 11 000-13 000 females and has undergone population bottlenecks and expansions that coincide with the timing of the last ice-ages.

AB - Reproductive philopatry in bull sharks Carcharhinus leucas was investigated by comparing mitochondrial (NADH dehydrogenase subunit 4, 797 base pairs and control region genes 837 base pairs) and nuclear (three microsatellite loci) DNA of juveniles sampled from 13 river systems across northern Australia. High mitochondrial and low microsatellite genetic diversity among juveniles sampled from different rivers (mitochondrial φ ST = 0·0767, P < 0·05; microsatellite F ST = -0·0022, P > 0·05) supported female reproductive philopatry. Genetic structure was not further influenced by geographic distance (P > 0·05) or long-shore barriers to movement (P > 0·05). Additionally, results suggest that C. leucas in northern Australia has a long-term effective population size of 11 000-13 000 females and has undergone population bottlenecks and expansions that coincide with the timing of the last ice-ages.

KW - Estuary

KW - Microsatellites

KW - Mitochondria

KW - Northern Australia population

KW - Predator

KW - Structure

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VL - 80

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JO - Journal of Fish Biology

JF - Journal of Fish Biology

IS - 6

ER -

Evidence for reproductive philopatry in the bull shark Carcharhinus leucas

Abstract

Keywords

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