- Title
- Seasonal and developmental diet shifts in sympatric and allopatric intertidal gobies determined by stomach content and stable isotope analysis
- Creator
- Carbia, Penelope S.; Brown, Culum; Park, Joo M.; Gaston, Troy F.; Raoult, Vincent; Williamson, Jane E.
- Relation
- Journal of Fish Biology Vol. 97, Issue 4, p. 1051-1062
- Publisher Link
- http://dx.doi.org/10.1111/jfb.14463
- Publisher
- Wiley-Blackwell
- Resource Type
- journal article
- Date
- 2020
- Description
- Resource partitioning facilitates the coexistence of sympatric species through spatial, temporal and/or trophic strategies. Fishes living in the intertidal zone demonstrate highly adaptive plastic behaviour, including resource partitioning, through spatial and temporal shifts in diet and microhabitat. Although intertidal fish assemblages are influenced by inter- and intraspecific competition, few studies have compared the extent of resource partitioning between sympatric species in the context of trophic niche plasticity. Here we used complementary approaches, stomach content and stable isotope (d13C and d15N) analyses, to evaluate seasonal and developmental shifts in trophic niche position in two sympatric (Favonigobius lentiginosus and Bathygobius krefftii) and one allopatric (Bathygobius cocosensis) species of intertidal goby. The results indicate that resource partitioning in the two sympatric species varied with season, with almost no trophic niche overlap in summer to about ~30% overlap in winter. Also, evidence of dietary changes was found in B. cocosensis, which is likely associated with a shift in microhabitat and intraspecific competition. The findings highlight the temporal range of behavioural plasticity in trophic niche position of intertidal gobies, which likely has high adaptive value in the dynamic intertidal zone.
- Subject
- Bathygobius; Favonigobius; resident; resource partitioning; stable isotopes
- Identifier
- http://hdl.handle.net/1959.13/1437947
- Identifier
- uon:40517
- Identifier
- ISSN:0022-1112
- Rights
- This is the peer reviewed version of the following article: Carbia, Penelope S.; Brown, Culum; Park, Joo M.; Gaston, Troy F.; Raoult, Vincent; Williamson, Jane E. “Seasonal and developmental diet shifts in sympatric and allopatric intertidal gobies determined by stomach content and stable isotope analysis”. Journal of Fish Biology Vol. 97, Issue 4, p. 1051-1062, which has been published in final form at http://dx.doi.org/10.1111/jfb.14463. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
- Language
- eng
- Full Text
- Reviewed
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