Scientia Marina最新文献_第3页

The molluscan fauna of Chella Bank and surroundings (Western Mediterranean Sea) 切拉滩及其周围(西地中海)的软体动物区系

IF 1.4 4区生物学

Scientia Marina Pub Date : 2023-07-04 DOI: 10.3989/scimar.05342.067

J. A. Caballero-Herrera, J. Urra, S. Gofas, C. Salas, P. Bárcenas, M. Gallardo-Núñez, E. Moya-Urbano, J. Olivero, J. Rueda

{"title":"The molluscan fauna of Chella Bank and surroundings (Western Mediterranean Sea)","authors":"J. A. Caballero-Herrera, J. Urra, S. Gofas, C. Salas, P. Bárcenas, M. Gallardo-Núñez, E. Moya-Urbano, J. Olivero, J. Rueda","doi":"10.3989/scimar.05342.067","DOIUrl":"https://doi.org/10.3989/scimar.05342.067","url":null,"abstract":"Molluscs of Chella Bank and its surroundings were studied from 21 samples collected with a van Veen grab in the depth range 95-729 m. A total of 299 taxa were identified (77 live-taken), thus increasing by more than 95% the species of molluscs reported in the recently declared site of community importance “Sur de Almería-Seco de los Olivos”. Two of the species are new records to Spanish waters and one to the Alboran Sea. The high species richness observed could be related to the location, the hydrological characteristics and the topographical heterogeneity of the area within the Alboran Sea. Four significant groups of samples were discriminated through multivariate analysis of quantitative data of live-taken molluscs: (I) bathyal muddy bottoms with buried rhodoliths; (II) bathyal muddy bottoms with coral rubble; (III) bathyal hemipelagic muddy bottoms and (IV) bathyal sandy bottoms. Molluscs were more diverse on coral framework bottoms than on sedimentary bottoms around Chella Bank. Most of the live-taken species are widely distributed along the Atlantic and Mediterranean Sea, and a few are strictly Mediterranean. The most striking feature was the occurrence of two species with planktotrophic larval development for which Chella Bank is the sole recorded locality in the Mediterranean (Episcomitra angelesae and Mitrella templadoi) and which elsewhere extremely rare (Mathilda spp.).","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45482040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Barcoding coffee grounds - Exploring pteropod gastropod biodiversity with dregs in collection jars Barcoding咖啡渣-用收集罐中的残渣探索翼足类腹足类生物多样性

IF 1.4 4区生物学

Scientia Marina Pub Date : 2023-07-04 DOI: 10.3989/scimar.05275.061

C. F. Laibl, Juan Lucas Cervera Currado, J. Morinière, M. Schrödl

{"title":"Barcoding coffee grounds - Exploring pteropod gastropod biodiversity with dregs in collection jars","authors":"C. F. Laibl, Juan Lucas Cervera Currado, J. Morinière, M. Schrödl","doi":"10.3989/scimar.05275.061","DOIUrl":"https://doi.org/10.3989/scimar.05275.061","url":null,"abstract":"Despite their cosmopolitan occurrence and massive plankton sampling during expeditions, the genetic diversity within Pteropoda Cuvier, 1804 is still largely unexplored. In this study we present a next-generation environmental barcoding approach to zooplankton bulk samples, which were collected during the circumglobal 2010 Malaspina expedition to evaluate pteropod diversity. We introduce a technique that avoids destructive procedures and leaves material intact for further morphological investigations. We extracted DNA out of the dregs (organic material such as mucus or body parts) of 27 sample containers for molecular barcoding (average 100-260 bp of COI). We were able to identify 7128 operational taxonomic units corresponding to the species composition contained in the examined samples. Among them were three species of thecosome pteropods, Creseis acicula, Creseis virgula and Cavolinia inflexa, which are discussed with respect to their taxonomy and their geographic distribution. Unidentified gymnosomes were also present in our samples from warmer regions in oceanic waters of the southern Indian Ocean. To facilitate identification of species, it is beneficial to create a better database of pteropod COI barcodes. Furthermore, gathering environmental barcoding data on a broad global scale will help to better understand species abundance and distribution of pteropods in the world’s oceans, and potentially those of other planktonic organisms.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46516784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Increasing biological knowledge for better management of by-catch species: age, growth, and mortality of piper and red gurnards (Teleostei: Triglidae) 增加生物学知识以更好地管理副渔获物物种：胡椒和红蛙的年龄、生长和死亡率（Teleosteri:Triglidae）

IF 1.4 4区生物学

Scientia Marina Pub Date : 2023-03-30 DOI: 10.3989/scimar.05308.060

V. Sequeira, Inês Sousa, A. Neves, Ana Rita Vieira, E. Silva, Frederica Silva, A. M. Duarte, S. Mendes, R. Ganhão, C. Assis, R. Rebelo, M. F. Magalhães, M. M. Gil, Leonel Serrano Gordo

{"title":"Increasing biological knowledge for better management of by-catch species: age, growth, and mortality of piper and red gurnards (Teleostei: Triglidae)","authors":"V. Sequeira, Inês Sousa, A. Neves, Ana Rita Vieira, E. Silva, Frederica Silva, A. M. Duarte, S. Mendes, R. Ganhão, C. Assis, R. Rebelo, M. F. Magalhães, M. M. Gil, Leonel Serrano Gordo","doi":"10.3989/scimar.05308.060","DOIUrl":"https://doi.org/10.3989/scimar.05308.060","url":null,"abstract":"Gurnards are a valuable by-catch of mixed demersal fisheries and are commercially important in European waters, but they are often discarded, reported under “mixed gurnards” and with incomplete biological information by species. In the present work, a total of 558 piper gurnard specimens of between 10.9 and 44.4 cm (1 to 11 years) and 425 red gurnard specimens of between 10.2 and 42.1 cm (0 to 9 years) from the northeast Atlantic (Portuguese) coast were used to study age and growth. The von Bertalanffy growth parameters for piper gurnard were estimated through the combination of whole-otolith readings and back-calculation (L∞=44.7 cm, k=0.16 yr–1 and t0=–2.781 yr). For red gurnard the same growth parameters were estimated using whole-otolith readings (L∞=40.2 cm, k=0.28 yr–1 and t0=–1.074 yr). The results indicate that the red gurnard reaches a smaller length, although it grows faster than the piper gurnard. Natural, instantaneous and fishing mortalities were estimated as well as the exploitation rate for both species. For the Portuguese coast, the red gurnard showed a higher fishing mortality and exploitation rate than the piper gurnard, raising concerns about its sustainable management.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47827029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Description of unique live colour patterns as a tool for discriminating hermit crab species in the Iberian Peninsula 描述伊比利亚半岛独特的活体颜色图案作为鉴别寄居蟹物种的工具

IF 1.4 4区生物学

Scientia Marina Pub Date : 2023-03-30 DOI: 10.3989/scimar.05332.058

B. Almón, E. García-Isarch, J. Cuesta, J. E. García-Raso

引用次数: 0

Life history and population dynamics of the enigmatic tanaid Chondrochelia dubia (Tanaidacea: Leptocheliidae) in a tropical seaweed bed 热带海藻床中神秘的褐藻软骨菌的生活史和种群动态

IF 1.4 4区生物学

Scientia Marina Pub Date : 2023-03-30 DOI: 10.3989/scimar.05322.059

Rodrigo V. A. Alves, F. Lucena Frédou, Nykon Craveiro, Leandro Nolé Eduardo, J. S. Rosa Filho

{"title":"Life history and population dynamics of the enigmatic tanaid Chondrochelia dubia (Tanaidacea: Leptocheliidae) in a tropical seaweed bed","authors":"Rodrigo V. A. Alves, F. Lucena Frédou, Nykon Craveiro, Leandro Nolé Eduardo, J. S. Rosa Filho","doi":"10.3989/scimar.05322.059","DOIUrl":"https://doi.org/10.3989/scimar.05322.059","url":null,"abstract":"The present study describes the population dynamics and life history parameters of the enigmatic tanaid Chondrochelia dubia collected in Paiva Beach, tropical coast of Brazil. The region was impacted by a large, unexpected oil spill from August to October 2019. Samples were taken monthly between July 2019 and July 2020 in beds of the red seaweed Jania capillacea. The abundance of individuals was negatively correlated with monthly rainfall, with higher abundances in drier months. There was an unexpected significant drop in abundance in September, possibly caused by contact with the crude oil, but the population recovered fully within two months. The parameters of the von Bertallanfy growth equation, calculated for the first time for the species, were Linf=5.26 mm; k=3.36 year–1; t0=0.0. Compared with other studies, the specimens are very small (2.04 ± 0.95 mm in length), females reach sexual maturity very early (L50=2.3 mm), and natural mortality is high (Z=M=5.77 year–1), indicating an opportunistic life strategy. This study reinforces the bioindication potential of C. dubia and the use of bootstrapped length-based methods to estimate key population parameters in small marine invertebrates.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48009228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Revalidation of Arnoglossus blachei, a species of flounder from off West Africa, with a redescription of Arnoglossus imperialis from the northeastern Atlantic and Mediterranean (Teleostei: Bothidae) 来自西非海域的一种牙鲆，对来自大西洋东北部和地中海的帝王舌鲆进行重新鉴定（Teleoste:Bothidae）

IF 1.4 4区生物学

Scientia Marina Pub Date : 2023-03-30 DOI: 10.3989/scimar.05347.056

R. Fricke, Sergio Ramírez-Amaro, F. Ordines

{"title":"Revalidation of Arnoglossus blachei, a species of flounder from off West Africa, with a redescription of Arnoglossus imperialis from the northeastern Atlantic and Mediterranean (Teleostei: Bothidae)","authors":"R. Fricke, Sergio Ramírez-Amaro, F. Ordines","doi":"10.3989/scimar.05347.056","DOIUrl":"https://doi.org/10.3989/scimar.05347.056","url":null,"abstract":" \u0000 Blache’s flounder, Arnoglossus blachei Stauch, 1965, is redescribed from the eastern Atlantic (Morocco south to Namibia, including the Canary Islands, larvae reaching South Africa) and distinguished from the imperial flounder A. imperialis (Rafinesque, 1810) by having a live colouration of the lower side of males which is bright red (whitish in A. imperialis), the caudal fin with lateral-line scales 52-57 (vs. 58-63), and the dorsal-fin filaments in male light grey, with black margins, distally yellowish (vs. plain white). A lectotype is selected for Arnoglossus blachei. The species is compared with similar species. The externally similar species Arnoglossus imperialis is also redescribed; its distibution range is restricted to the Mediterranean and northeastern Atlantic, including Madeira and the Azores. Neotypes are selected to stabilize the usage of the names Bothus imperialis Rafinesque, 1810, Bothus punctatus Rafinesque, 1814, Rhombus cristatus Lowe, 1839 and Charybdia rhomdoidichthys Facciolà, 1885. Molecular analyses based on two mitochondrial fragments (12s rRNA and COI) clearly support the validity of A. blachei. Moreover, though A. blachei is morphologically close to A. imperialis, the two species show the highest genetic distances among all Arnoglossus species compared (including A. capensis, A. imperialis, A. laterna, A. rueppelii and A. thori). A key to the eastern Atlantic and Mediterranean species of Arnoglossus is presented.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42045607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biogenic habitats as drivers of invertebrate benthic community variability in Tongoy Bay (SE Pacific coast): implications of macroalga harvesting Tongoy湾(东南太平洋海岸)无脊椎底栖动物群落变异的生物栖息地驱动因素:大型藻类收获的影响

IF 1.4 4区生物学

Scientia Marina Pub Date : 2023-03-30 DOI: 10.3989/scimar.05350.057

Jorge E. González, B. Yannicelli, F. Rodríguez-Zaragoza, M. Ortiz

{"title":"Biogenic habitats as drivers of invertebrate benthic community variability in Tongoy Bay (SE Pacific coast): implications of macroalga harvesting","authors":"Jorge E. González, B. Yannicelli, F. Rodríguez-Zaragoza, M. Ortiz","doi":"10.3989/scimar.05350.057","DOIUrl":"https://doi.org/10.3989/scimar.05350.057","url":null,"abstract":"Habitat biogenic complexity is thought to exert a significant positive influence on benthic communities. We examined the link between the seasonal variability of macroinvertebrate community structure (species and trophic richness, diversity and biomass) and habitats with different macroalgal assemblages. We identified macroinvertebrates and algae from 336 samples spread over four types of habitat: sand, mud, sand-gravel and seagrass meadows. Considering the whole macroalgal and macroinvertebrate assemblage, we confirmed that macroinvertebrate community variability within and among habitats can be mainly (but not only) explained by a few macroalgal structuring species. The variability of macroinvertebrate communities between habitats and seasons depended on the changes in the relative contribution of the explanatory biostructuring species in the overall algal community. Biomass, trophic behaviour and species richness remained stable in habitats with conspicuous macroalgal communities in contrast with habitats devoid of macroalgae. However, invertebrate species richness and biomass remained stable only in habitats whose dominant species did not change between seasons and not in those where dominant structuring species shifted. The seasonal change in a key structuring macroalgal species (Condracanthus chamissoi), probably as a result of harvesting, led to a major reduction in invertebrate community biomass and richness both in the particular habitat and in those nearby at species level. These consequences are especially important for invertebrates linked by trophic relationships and targeted by fisheries.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47706611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reproductive traits exhibited by the paedomorphic gobies exploited in the Majorcan transparent goby fishery (western Mediterranean) and their management implications 马略卡透明虾虎鱼渔场（地中海西部）开发的幼年虾虎鱼表现出的繁殖特征及其管理意义

IF 1.4 4区生物学

Scientia Marina Pub Date : 2023-03-30 DOI: 10.3989/scimar.05311.054

Inmaculada Riera-Batle, Enrique Massutí-Pascual, Elena Pastor Gracia, Antonio María Grau Jofre, Amalia Grau Jofre

{"title":"Reproductive traits exhibited by the paedomorphic gobies exploited in the Majorcan transparent goby fishery (western Mediterranean) and their management implications","authors":"Inmaculada Riera-Batle, Enrique Massutí-Pascual, Elena Pastor Gracia, Antonio María Grau Jofre, Amalia Grau Jofre","doi":"10.3989/scimar.05311.054","DOIUrl":"https://doi.org/10.3989/scimar.05311.054","url":null,"abstract":"An important small-scale fishery in Majorca targets three similar goby species: Aphia minuta, Pseudaphia ferreri and Crystallogobius linearis. Histological examination of the gonads of these species sampled from landings during the fishing season revealed characteristic reproductive traits that could be defined as abbreviate iteroparity. The transparent goby (Aphia minuta) and Ferrer’s goby (Pseudaphia ferreri) showed batch abbreviate iteroparity as a reproductive strategy, whereas the crystal goby (Crystallogobius linearis) showed total abbreviate iteroparity. Despite their short lifespans, all of them have a spawning season whose duration is longer than the legal fishing season. Additionally, all of them maintain a standing stock of primary growth oocytes in their gonads, indicating more than one spawning season in their lifespan. These reproductive features partially offset their special sensitivity to potential overexploitation and environmental changes but also suggest that the fishery needs special management to avoid breaking the balance between sustainability and fishing effort. The results of size at maturity and potential annual fecundity in the three species of the fishery are also reported and discussed.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48963440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Predator-prey collapses at the edge of predator distribution: the case of clupeids and common guillemots (Uria aalge) in NW Iberia 捕食者的猎物在捕食者分布的边缘崩溃：以伊比利亚西北部的clupeids和普通海鸠（Uria aalge）为例

IF 1.4 4区生物学

Scientia Marina Pub Date : 2023-03-30 DOI: 10.3989/scimar.05299.053

A. Martínez‐Abraín, P. Santidrián Tomillo, J. Mouriño, Juan Rodríguez-Silvar, Andrés Bermejo

{"title":"Predator-prey collapses at the edge of predator distribution: the case of clupeids and common guillemots (Uria aalge) in NW Iberia","authors":"A. Martínez‐Abraín, P. Santidrián Tomillo, J. Mouriño, Juan Rodríguez-Silvar, Andrés Bermejo","doi":"10.3989/scimar.05299.053","DOIUrl":"https://doi.org/10.3989/scimar.05299.053","url":null,"abstract":"The spatial structuring of seabird populations makes individual colonies very dependent on regional factors. That is especially the case in small edge populations located far from large colonies. We analysed retrospectively the poorly known collapse, some 50 years ago (around 1962-1973), of a relatively small population of breeding common guillemots (Uria aalge) located at their southernmost limit of distribution in Europe (NW Iberia). We assumed that guillemots behaved locally as facultative specialists in small pelagic fish due to the occurrence of a strong clupeid fishery, and we studied the association between the guillemot collapse and annual regional landings of sardine (Sardina pilchardus) and anchovy (Engraulis encrasicolus), used as a proxy of total stock size. The overall relationship between ln-transformed guillemot counts (May-June) and ln-transformed sardine landings (May-October) was stronger than the fit on untransformed variables (r2 =0.52 vs. 0.27), indicating an exponential relationship between the non-transformed variables. This relationship was somewhat stronger and linear after the collapse, when only a few tens of guillemots remaining (r2 =0.60). A strong regime shift in sardine landings was detected in 1968 and also in anchovy landings in 1969. The overall relationship between guillemot numbers and anchovy landings was linear and strong (r2 =0.72) but completely dependent on the large 1960s estimate of guillemots. However, no relationship was found between guillemot numbers and anchovy landings (April-June) after the guillemot collapse. The most likely period for the guillemot collapse was therefore 1968-1970, as seabird colonies are known to collapse immediately after their staple prey crashes. Local guillemot colonies were not subsequently rescued by immigration and have remained empty or almost empty until present, showing the high sensitivity of edge populations to environmental variability at the regional scale.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44091401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effects of six diets on the growth and survival rates of postlarvae of red abalone (Haliotis rufescens) and its hybrid (H. rufescens ♀ × H. fulgens ♂) 6种饲料对红鲍鱼(Haliotis rufescens)及其杂种(Haliotis rufescens♀× hfulgens♂)幼鱼生长和存活率的影响

IF 1.4 4区生物学

Scientia Marina Pub Date : 2023-03-30 DOI: 10.3989/scimar.05300.055

F. Cicala, M. Tripp-Valdez, Vincent Montes-Orozco, Gesem S. Cervantes-Vazquez, F. Lafarga‐De la Cruz

{"title":"Effects of six diets on the growth and survival rates of postlarvae of red abalone (Haliotis rufescens) and its hybrid (H. rufescens ♀ × H. fulgens ♂)","authors":"F. Cicala, M. Tripp-Valdez, Vincent Montes-Orozco, Gesem S. Cervantes-Vazquez, F. Lafarga‐De la Cruz","doi":"10.3989/scimar.05300.055","DOIUrl":"https://doi.org/10.3989/scimar.05300.055","url":null,"abstract":"One of the main bottlenecks in abalone aquaculture is maintaining individuals during the weaning stage, when the natural diet changes from diatoms (postlarvae) to macroalgae (juvenile). During this period, abalone pass through profound morphological and physiological changes, which suitable nutrient requirements must sustain. An inadequate diet can result in adverse effects such as late metamorphosis, starvation, slow growth and even death during this phase. Two strategies have been proposed to increase the growth and survival rates of weaning abalone: (i) extending feeding with benthic diatoms and (ii) abalone hybridization via interspecific crosses. To evaluate the efficiency of the two strategies, we assessed the growth and survival rates of postlarvae of pure red abalone (Haliotis rufescens) and a hybrid obtained by crossing red abalone females with green abalone (H. fulgens) males. Both crosses were supplied with six different diets consisting of either one macroalgae mono-diet (Macrocystis pyrifera or Ulva ohnoi) or a mixture with Navicula incerta. Overall, cross-specific diets achieved better growth rates, suggesting that each cross may need specific food items (nutrients) during weaning. Moreover, pure red abalone generally showed the highest growth rates, while the hybrid abalone showed the highest survival rates with most tested diets. Hence, hybrids appear to be better at withstanding stressful conditions, and their use in aquaculture could reduce losses and increase commercial production.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42569850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0