Jack Ingelbrecht, Karissa O. Lear, Nicole M. Phillips, Barbara E. Wueringer, Alan J. Lymbery, Bradley M. Norman, David L. Morgan
{"title":"Kinship assessment and insights into reproductive behaviour of the Critically Endangered green sawfish Pristis zijsron in Western Australia","authors":"Jack Ingelbrecht, Karissa O. Lear, Nicole M. Phillips, Barbara E. Wueringer, Alan J. Lymbery, Bradley M. Norman, David L. Morgan","doi":"10.1002/aqc.4213","DOIUrl":"https://doi.org/10.1002/aqc.4213","url":null,"abstract":"<p>\u0000 \u0000 </p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 6","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aqc.4213","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141488675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Brock M. Huntsman, Kai Palenscar, Kerwin Russell, Brett Mills, Chris Jones, William Ota, Kurt E. Anderson, Heather Dyer, Fitsum Abadi, Marissa Wulff
{"title":"Evaluation of extinction risk for stream fishes within an urban riverscape using population viability analysis","authors":"Brock M. Huntsman, Kai Palenscar, Kerwin Russell, Brett Mills, Chris Jones, William Ota, Kurt E. Anderson, Heather Dyer, Fitsum Abadi, Marissa Wulff","doi":"10.1002/aqc.4164","DOIUrl":"https://doi.org/10.1002/aqc.4164","url":null,"abstract":"<p>1. The Santa Ana River in the Los Angeles region of California demonstrates common habitat degradation symptoms that are characteristic of the urban stream syndrome. These impacts have altered the Santa Ana River community structure, with few species as impacted as the native Santa Ana sucker (sucker; <i>Pantosteus santaanae</i>). 2. Consequently, a recovery plan developed for sucker identified the need for a population viability analysis (PVA) to assess sucker extirpation risk. However, PVAs can be data-intensive and are subject to several sources of bias when standardized protocols are absent. 3. More than 20 years of sucker and arroyo chub (chub; <i>Gila orcuttii</i>) surveys using different methods were compiled to build an integrated hierarchical multi-population PVA to estimate trends in abundance and extirpation probability of these native fishes from the Santa Ana River. 4. PVA modelling indicated similar patterns in sucker and chub abundance along the Santa Ana River, with the highest abundance of both species in the upper regions of the river during the early 2000s and downstream in recent years (2018–2022). Extirpation risk was estimated to be greatest near wastewater treatment facilities, where native fish abundance estimates have been zero since 2018. Extirpation risk was lower downstream of the wastewater treatment facilities for both species, although extinction risk was higher for sucker than chub throughout the river. 5. As the model evolves and more data are collected, the PVA could be used to assess the effects of various management actions, such as non-native predator removals and native fish re-introductions, on sucker and chub persistence.</p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aqc.4164","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141430327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Paulo B. Mascarenhas-Junior, Bradley A. Strickland, Michael R. Heithaus, Rayssa L. Santos, Rafael S. Barboza, Pedro I. Simões, Jozelia M. Correia
{"title":"Artisanal fishing affects the local distribution of broad-snouted caiman (Caiman latirostris) within the Atlantic Forest of Brazil","authors":"Paulo B. Mascarenhas-Junior, Bradley A. Strickland, Michael R. Heithaus, Rayssa L. Santos, Rafael S. Barboza, Pedro I. Simões, Jozelia M. Correia","doi":"10.1002/aqc.4214","DOIUrl":"https://doi.org/10.1002/aqc.4214","url":null,"abstract":"<p>\u0000 </p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141425047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Michael P. Hammer, Nick S. Whiterod, Frédéric Grandjean, Jared J. Tromp, Suzanne K. Horner, Chris M. Austin
{"title":"Rediscovery, systematics and conservation of an enigmatic freshwater crayfish (Parastacidae) from the Australian monsoon tropics","authors":"Michael P. Hammer, Nick S. Whiterod, Frédéric Grandjean, Jared J. Tromp, Suzanne K. Horner, Chris M. Austin","doi":"10.1002/aqc.4172","DOIUrl":"https://doi.org/10.1002/aqc.4172","url":null,"abstract":"<p>Freshwater wetlands are among the world's most valuable ecosystems, supporting diverse biota and critical ecological services, yet these habitats have suffered extensive and pervasive anthropogenic disturbance. Northern Australia represents a rare example of a relatively unmodified, vast wetland habitat. The freshwater crayfishes of the region are poorly documented, with one enigmatic species, the nutcracker yabby <i>Cherax nucifraga</i>, described from a single individual sampled opportunistically from the stomach of a predatory fish. Here we report on the rediscovery of <i>C. nucifraga</i> from a relatively limited distribution in semi-permanent coastal freshwater wetlands. Field studies were conducted to inform natural resource management and conservation. Genome skimming to recover mitogenomes, 18S–28S and histone sequences demonstrated a sister relationship with two congeners from the tropics, and moderate molecular genetic substructure was apparent within <i>C. nucifraga</i> between mainland and Melville Island locations. <i>Cherax nucifraga</i> is characterised by the presence of a strawberry-coloured soft patch on the outer margin of the claw, uniquely present in both mature males and females. Meristic and multivariate morphometric comparisons are made with the co-occurring redclaw <i>Cherax quadricarinatus</i> and the allopatric whiteclaw yabby <i>Cherax bicarinatus,</i> with a summary of diagnostic traits developed into a visual guide and key. Programs to further understand ecology, threats and traditional ecological knowledge will help to inform the future conservation management of the species in the face of increasing development and environmental change to northern Australian coastal freshwater wetlands. Specific conservation actions include identifying and protecting refuge habitats and preventing incursions by other <i>Cherax</i> species.</p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141326712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sabrina Nykänen, Jouni Taskinen, Mahsa Hajisafarali, Anna Kuparinen
{"title":"Growth and longevity of the endangered freshwater pearl mussel (Margaritifera margaritifera): Implications for conservation and management","authors":"Sabrina Nykänen, Jouni Taskinen, Mahsa Hajisafarali, Anna Kuparinen","doi":"10.1002/aqc.4205","DOIUrl":"https://doi.org/10.1002/aqc.4205","url":null,"abstract":"<p>Key life-history data, such as growth and age, are necessary to effectively manage and conserve threatened freshwater mussel species. Traditionally growth and age studies require large yet destructive sample sizes covering all age classes. Such methods pose a risk to populations of conservation concern, and therefore, alternative methods that need only limited sample sizes are necessitated to prevent further threats to such populations. We applied retrospective shell growth at age reconstructions to 98 critically endangered freshwater pearl mussel (FPM) individuals from 34 populations across Finland and Sweden, enabling the use of extremely small sample sizes (<i>n</i> = 1–6 per population). We compared the performance of six different growth models with the reconstructed size-at-age data across FPM juvenile (<20 years old) and adult life stages. The growth reconstruction model showed reasonable skill in reconstructing FPM growth patterns. The von Bertalanffy model showed to be a good general descriptor of growth for FPM, but it systematically underestimated the asymptotic size. The power law model was the most accurate in estimating juvenile growth (lowest deviances from the size-at-age data). FPM showed great variability in longevity (<i>A</i><sub><i>max</i></sub> = 54–254 years) and growth constant <i>k</i> (0.018–0.057 year<sup>−1</sup>). Our results show that reasonable estimates of growth can be attained even when sample sizes are extremely limited. The results can be further applied to gain knowledge on the population's age structure, size at maturation, and recovery potential. The methodology is applicable to other freshwater mussel species of conservation concern.</p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aqc.4205","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141326713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nayara Bucair, Sibele Mendonça, Paulo R.S. Santos, Luiza D. Chelotti, Jones Santander-Neto, Jorge L.S. Nunes, Patricia Charvet, Claudio L.S. Sampaio, Getulio Rincon, Otto B.F. Gadig, June F. Dias, Ronaldo B. Francini-Filho
{"title":"Occurrence, distribution and threats to mobulid rays in Brazil: A review and updated database","authors":"Nayara Bucair, Sibele Mendonça, Paulo R.S. Santos, Luiza D. Chelotti, Jones Santander-Neto, Jorge L.S. Nunes, Patricia Charvet, Claudio L.S. Sampaio, Getulio Rincon, Otto B.F. Gadig, June F. Dias, Ronaldo B. Francini-Filho","doi":"10.1002/aqc.4203","DOIUrl":"https://doi.org/10.1002/aqc.4203","url":null,"abstract":"<p>\u0000 </p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141304267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. P. O'Connell, I. Pezzano, S. Shandroff, K. Kim-Suzuki, H. McGuigan
{"title":"Evaluating the potential white shark (Carcharodon carcharias) swim pattern manipulation capabilities of the novel and noninvasive Shark Exclusion Barrier","authors":"C. P. O'Connell, I. Pezzano, S. Shandroff, K. Kim-Suzuki, H. McGuigan","doi":"10.1002/aqc.4209","DOIUrl":"https://doi.org/10.1002/aqc.4209","url":null,"abstract":"<p>\u0000 </p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141251359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Iran C. Normande, João Carlos G. Borges, Fernanda L.N. Attademo, Emma Deeks, Sebastião S. dos Santos, Cristine P. Negrão, Flávio José L. Silva, Nuno Queiroz, Richard J. Ladle, Fabia O. Luna, Robson G. Santos
{"title":"Long-term tracking reveals the influence of body size and habitat type on the home range of Antillean manatees (Trichechus manatus manatus)","authors":"Iran C. Normande, João Carlos G. Borges, Fernanda L.N. Attademo, Emma Deeks, Sebastião S. dos Santos, Cristine P. Negrão, Flávio José L. Silva, Nuno Queiroz, Richard J. Ladle, Fabia O. Luna, Robson G. Santos","doi":"10.1002/aqc.4174","DOIUrl":"https://doi.org/10.1002/aqc.4174","url":null,"abstract":"<p>Antillean manatees (<i>Trichechus manatus manatus</i>) are endangered coastal, marine, and riverine megaherbivores with high environmental plasticity, constrained by tidal and seasonal water level cycles that affect access to food and fresh water. Accurate quantification of the species' habitat requirements, typically achieved through home range (HR) estimation, is required to implement area-based conservation initiatives. In this study, we used GPS tracking data from 38 wild and captive-rehabilitated released manatees to estimate HR using autocorrelated kernel density estimators (AKDE) and average time speed. We investigated whether body size, habitat type, sex and behavioural group influence home range size due to energy requirements, resources availability, a scramble-competitive polygyny mating system, and adaptation to the wild. Eighteen manatees exhibited range-resident behaviour, with a mean 95% home range of 72.96 km<sup>2</sup> (± 218.52) and a median of 10.69 km<sup>2</sup>. The mean daily speed was estimated to be 13.47 km/day (± 4.16). Home range and body size were positively correlated, consistent with HR allometry theory. Long-term tracked individuals showed a trend of increasing HR over time. Only four released animals (17.4%) were range-resident, suggesting that they may need additional time to establish a home range. Individuals using only the marine environment had larger home ranges compared to mixed (marine and estuarine) and estuarine environments, probably due to freshwater availability. Our study contributes to the understanding of the factors driving manatee movement and provides more accurate estimates of area requirements, which can inform the establishment and zoning of marine protected areas.</p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141245823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}