Universität zu Köln

Schwanck, Tanja N., Schweinsberg, Maximilian, Lampert, Kathrin P., Guttridge, Tristan L., Tollrian, Ralph and O'Shea, Owen (2020). Linking local movement and molecular analysis to explore philopatry and population connectivity of the southern stingray Hypanus americanus. J. Fish Biol., 96 (6). S. 1475 - 1489. HOBOKEN: WILEY. ISSN 1095-8649

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Abstract

Limited data pertaining to life history and population connectivity of the data-deficient southern stingray (Hypanus americanus) are available. To determine potential vulnerabilities of their populations, this study aimed to analyse their movement patterns and genetic variability. A population of southern stingrays encompassing nine sites around Cape Eleuthera, the Bahamas, has been monitored using mark-recapture, spanning a 2.5 year period. Out of 200 individual stingrays, more than a third were encountered again. The home range of the females appears to be restricted, which supports the notion of high site residency. As resident populations of stingrays could suffer from a lack of population connectivity and be predestined for genetic isolation and local extirpation, this study further investigated the genetic connectivity of four sample sites in the central and western Bahamas. A haplotype analysis from the mitochondrial D-loop region showed that no distinct population structure strictly correlated with the sample site. These findings were complemented by five microsatellite loci that revealed high degrees in genotypic variability and little population differentiation. The results suggest gene flow mediated by both males and females.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Schwanck, Tanja N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schweinsberg, Maximilian UNSPECIFIED UNSPECIFIED UNSPECIFIED Lampert, Kathrin P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Guttridge, Tristan L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tollrian, Ralph UNSPECIFIED UNSPECIFIED UNSPECIFIED O'Shea, Owen UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-337555
DOI:	10.1111/jfb.14325
Journal or Publication Title:	J. Fish Biol.
Volume:	96
Number:	6
Page Range:	S. 1475 - 1489
Date:	2020
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	1095-8649
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SEX-BIASED DISPERSAL; SHORT-TAILED STINGRAY; DASYATIS-AMERICANA; GENETIC-STRUCTURE; MITOCHONDRIAL-DNA; UNITED-STATES; HUTTON 1875; R-PACKAGE; SHARKS; CONSERVATION Multiple languages Fisheries; Marine & Freshwater Biology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/33755