1 resultado para Common management institutions
em DigitalCommons - The University of Maine Research
Filtro por publicador
- JISC Information Environment Repository (4)
- Repository Napier (1)
- ABACUS. Repositorio de Producción Científica - Universidad Europea (1)
- Aberdeen University (5)
- Aberystwyth University Repository - Reino Unido (2)
- Academic Archive On-line (Stockholm University; Sweden) (1)
- Academic Research Repository at Institute of Developing Economies (2)
- AMS Tesi di Dottorato - Alm@DL - Università di Bologna (9)
- AMS Tesi di Laurea - Alm@DL - Università di Bologna (2)
- Aquatic Commons (56)
- Archive of European Integration (44)
- Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (6)
- Aston University Research Archive (42)
- Avian Conservation and Ecology - Eletronic Cientific Hournal - Écologie et conservation des oiseaux: (1)
- Biblioteca Digital | Sistema Integrado de Documentación | UNCuyo - UNCUYO. UNIVERSIDAD NACIONAL DE CUYO. (2)
- Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (10)
- Biblioteca Digital de Teses e Dissertações Eletrônicas da UERJ (2)
- BORIS: Bern Open Repository and Information System - Berna - Suiça (78)
- Boston University Digital Common (1)
- CaltechTHESIS (1)
- Cambridge University Engineering Department Publications Database (4)
- CentAUR: Central Archive University of Reading - UK (50)
- Central European University - Research Support Scheme (1)
- Chinese Academy of Sciences Institutional Repositories Grid Portal (3)
- Cochin University of Science & Technology (CUSAT), India (4)
- Comissão Econômica para a América Latina e o Caribe (CEPAL) (11)
- CORA - Cork Open Research Archive - University College Cork - Ireland (6)
- Corvinus Research Archive - The institutional repository for the Corvinus University of Budapest (9)
- CUNY Academic Works (2)
- Dalarna University College Electronic Archive (2)
- Deakin Research Online - Australia (109)
- Department of Computer Science E-Repository - King's College London, Strand, London (3)
- DI-fusion - The institutional repository of Université Libre de Bruxelles (1)
- Digital Commons - Michigan Tech (3)
- Digital Commons @ DU | University of Denver Research (2)
- Digital Commons @ Winthrop University (1)
- Digital Commons at Florida International University (13)
- Digital Peer Publishing (1)
- Digital Repository at Iowa State University (1)
- DigitalCommons - The University of Maine Research (1)
- DigitalCommons@The Texas Medical Center (9)
- DigitalCommons@University of Nebraska - Lincoln (5)
- Doria (National Library of Finland DSpace Services) - National Library of Finland, Finland (4)
- DRUM (Digital Repository at the University of Maryland) (3)
- Duke University (5)
- Ecology and Society (3)
- eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (16)
- Glasgow Theses Service (1)
- Greenwich Academic Literature Archive - UK (6)
- Helda - Digital Repository of University of Helsinki (15)
- Illinois Digital Environment for Access to Learning and Scholarship Repository (1)
- Indian Institute of Science - Bangalore - Índia (6)
- INSTITUTO DE PESQUISAS ENERGÉTICAS E NUCLEARES (IPEN) - Repositório Digital da Produção Técnico Científica - BibliotecaTerezine Arantes Ferra (1)
- Instituto Politécnico de Leiria (1)
- Instituto Politécnico do Porto, Portugal (8)
- Memorial University Research Repository (1)
- Ministerio de Cultura, Spain (1)
- Nottingham eTheses (1)
- Portal de Revistas Científicas Complutenses - Espanha (3)
- Publishing Network for Geoscientific & Environmental Data (1)
- QSpace: Queen's University - Canada (1)
- QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (41)
- Queensland University of Technology - ePrints Archive (128)
- RCAAP - Repositório Científico de Acesso Aberto de Portugal (1)
- RDBU - Repositório Digital da Biblioteca da Unisinos (1)
- Repositório Alice (Acesso Livre à Informação Científica da Embrapa / Repository Open Access to Scientific Information from Embrapa) (1)
- Repositório Científico da Universidade de Évora - Portugal (3)
- Repositório digital da Fundação Getúlio Vargas - FGV (13)
- Repositório Institucional da Universidade de Aveiro - Portugal (10)
- Repositório Institucional da Universidade Federal do Rio Grande do Norte (2)
- Repositório Institucional da Universidade Tecnológica Federal do Paraná (RIUT) (1)
- Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (30)
- Research Open Access Repository of the University of East London. (2)
- RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (2)
- SAPIENTIA - Universidade do Algarve - Portugal (1)
- SerWisS - Server für Wissenschaftliche Schriften der Fachhochschule Hannover (1)
- South Carolina State Documents Depository (1)
- Universidad de Alicante (3)
- Universidad del Rosario, Colombia (12)
- Universidad Politécnica de Madrid (28)
- Universidade de Lisboa - Repositório Aberto (4)
- Universidade dos Açores - Portugal (1)
- Universidade Federal do Pará (2)
- Universidade Federal do Rio Grande do Norte (UFRN) (7)
- Universidade Metodista de São Paulo (4)
- Universitat de Girona, Spain (2)
- Universitätsbibliothek Kassel, Universität Kassel, Germany (6)
- Université de Lausanne, Switzerland (3)
- Université de Montréal, Canada (5)
- University of Connecticut - USA (1)
- University of Michigan (20)
- University of Queensland eSpace - Australia (36)
- University of Washington (4)
- WestminsterResearch - UK (6)
- Worcester Research and Publications - Worcester Research and Publications - UK (2)
Resumo:
The endemic New Zealand longfin eel Anguilla dieffenbachi (hereafter, longfin eel), is overfished, and in southern South Island, New Zealand, rivers have recently become predominated by males. This study examined length and age at sexual differentiation in male eels in the Aparima River catchment (area, 1,375 km(2); mean flow, 20 m(3.)s(-1)) and the sex ratio and distribution of eels throughout the catchment. Longfin eels differentiated into males mostly at lengths from 300 to 460 mm and ages from 10 to 25+ years. Females were rare: Of 738 eels examined for sexual differentiation, 466 were males and 5 were females, and a few others, not examined, were large enough to be female. These counts suggest a male : female ratio among differentiated longfin eels of 68:1. Of 31 differentiated shortfin eels A. australis, less common in the Aparima River, 26 were females. Male longfin eels were distributed throughout the main stern and tributaries; undifferentiated eels were more prevalent in lower and middle reaches and in the main stem than in upper reaches and tributaries. In other studies, male longfin eels predominated commercial catches in the Aparima and four other southernmost rivers, by 2.4:1 to 13.6:1 males to females. The Aparima River had the most skewed sex ratio. Longfin eel catches from the Aparima River will become more male predominated because few sublegal-size females were present. The length-frequency distributions of eels in the present samples and in the commercial catches were truncated just above minimum legal size (about 460 mm), showing that few females escape the fishery. Historically, females predominated these rivers. The recent change in sex ratio is attributable partly to selective harvest of females, and partly to changes in the structure of the population from fishing, such that differentiation into males has been favored. Longevity, delayed sexual maturity, semel-parity, and endemism with restricted range make the longfin eel particularly vulnerable to overfishing.