Comparative population biology and reproduction of two sympatric crabs (Grapsidae) on Azores cobble beaches. Issue 3 (3rd July 2018)
- Record Type:
- Journal Article
- Title:
- Comparative population biology and reproduction of two sympatric crabs (Grapsidae) on Azores cobble beaches. Issue 3 (3rd July 2018)
- Main Title:
- Comparative population biology and reproduction of two sympatric crabs (Grapsidae) on Azores cobble beaches
- Authors:
- Costa, Tarso De Menezes Macedo
Álvaro, Nuno Miguel da Silva Ascensão Vaz
Rodrigues, Armindo Dos Santos
Neto, Ana Isabel De Melo Azevedo
Azevedo, José Manuel Viegas Oliveira Neto - Abstract:
- ABSTRACT: Population biology of the intertidal crabs Pachygrapsus marmoratus Fabricius, 1787 and P. maurus (Lucas 1846) was investigated at cobble beaches with different levels of wave exposure. Surveys were taken monthly over 1.5 years at three intertidal levels. The growth rate of both species was similar, although P. marmoratus reached larger sizes. This species was more abundant on the mid-littoral zone of sheltered beaches, whereas P. maurus was more abundant on more exposed ones. The sex ratio was male biased in both species, particularly for the smaller and larger size classes. Both species showed an extended reproductive season, coinciding with the rising temperatures of spring and summer, with ovigerous females being found from June to September for P. marmoratus and from May to August for P. maurus . The present study indicates that both could develop adaptive strategies allowing them to coexist in the Azores littoral. The greater size of P. marmoratus seems to be an advantage on the competition for refuges with P. maurus, which results in its higher abundance and general dominance in the higher shore levels and in less exposed shores. However, P. maurus seems to be more fitted to live in the higher hydrodynamic habitats.
- Is Part Of:
- Invertebrate reproduction & development. Volume 62:Issue 3(2018)
- Journal:
- Invertebrate reproduction & development
- Issue:
- Volume 62:Issue 3(2018)
- Issue Display:
- Volume 62, Issue 3 (2018)
- Year:
- 2018
- Volume:
- 62
- Issue:
- 3
- Issue Sort Value:
- 2018-0062-0003-0000
- Page Start:
- 169
- Page End:
- 177
- Publication Date:
- 2018-07-03
- Subjects:
- Population biology -- mottled shore crabs -- animal reproduction -- sex ratio -- age and growth
Invertebrates -- Reproduction -- Periodicals
Invertebrates -- Development -- Periodicals
571.812 - Journal URLs:
- http://www.tandfonline.com/toc/tinv20/current ↗
http://www.informaworld.com/tinv ↗
http://www.tandfonline.com/ ↗
http://catalog.hathitrust.org/api/volumes/oclc/19737364.html ↗ - DOI:
- 10.1080/07924259.2018.1491428 ↗
- Languages:
- English
- ISSNs:
- 0792-4259
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 4557.703600
British Library DSC - BLDSS-3PM
British Library STI - ELD Digital store - Ingest File:
- 7274.xml