Fish Spawning Aggregations in Alacranes Reef off Northern Yucatan Peninsula
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Fishermen in the Alacranes Reef region of Mexico were interviewed to document their traditional ecological knowledge of fish spawning aggregations in the area. They identified 13 reef fish species that form spawning aggregations at 8 different sites within the reef, with the majority being snappers and groupers. Most species were found to aggregate in the spring and summer months. While follow-up scientific studies are still needed, the fishermen's knowledge was found to be reliable based on similarities to spawning patterns observed elsewhere in the Caribbean. Future work will involve acoustic tracking of fish movements and genetic analysis to further characterize the aggregations.
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! 1!
A Scientific Review of the Physiology of Pacific Salmon Migration
B. C. McKinney1
1 Department of Natural Sciences, University of South Carolina Beaufort, One University
Boulevard, Bluffton, South Carolina 29909, USA
Abstract For many generations, humans have altered practically every
ecosystem in the entire world. The footprint humans leave behind on ecosystems
on Earth has continuously matted the ecosystems and critical habitat in which all
species on Earth depend on for survival. When considering Pacific and Atlantic
salmon populations, the array of human caused stressors is responsible for the
population depletions across the United States and Canada. This review will
coordinate the impacts of river impoundments (i.e., hydropower systems) on
upstream and downstream migration as well as visit the impacts of natural and
human caused change on the quality of habitat in which salmonids inhabit through
all life stages.
Introduction
A variety of teleost species are classified within the Family Salmonidae under the Order
Salmoniformes. Salmonidae is comprised of a variety of trouts (Salmo spp.), chars (Salvelinus
spp.), graylings (Thymallus spp.), taimen (Parahucho spp.), and salmons (Salmo &
Oncorhynchus spp.). The anatomy of this family is similar to other ray-finned fish having
dorsal, pelvic, pectoral, anal, and dorsal fins, however they possess an additional fin posterior to
the dorsal called the adipose fin.
Salmonid lifecycles are very complex and have been a topic of research for many
generations (Briggs, 1953; Holmes & Stainer 1966; Vronskiy, 1972; Thompson & Sargent, 1977;
Healy, 1980; McCormick &Saunders, 1987; Murray & Rosenau, 1989; Nehlson et al., 1991). In
recent findings, the introduction of telemetry techniques and field sampling routines have given
! 2!
researchers insight about the duration, timing, and patterns of homing and staying (Healy, 1980;
Giorgi et al., 1997; Walker et al., 2016). Through the protection of the Endangered Species Act
(ESA) select Pacific salmon populations have been granted protection by federal regulations in
relation to the habitat that is essential to their survival (USNMFS 1995). In this review, relevant
available published literature will be compiled to discuss a variety of explanations towards the
physiology and morphological complexities associated with Pacific salmon.!
Overview of Salmon Biology
In this section, emphasis will focus on the evolutionary history of Salmon (see Groot &
Margolis, 1991, Hendry et al., 2000, and Waples et al., 2007 for more details). North America’s
populations of Pacific Salmon consist of five distinct species: chinook salmon (Onchorhynchus
tshawytscha), pink salmon (O. gorbusha), chum salmon (O. keta), coho salmon (O. kisutch), and
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A gray whale was sighted in the Mediterranean Sea in May 2010, which was highly unusual since gray whales were last recorded there in the 1700s. There are three potential explanations for the origin of this whale: 1) it was a vagrant from the larger eastern North Pacific population; 2) it was a vagrant from the smaller western North Pacific population; or 3) it was from a previously extinct North Atlantic population. After analyzing routes and comparing identification photos to existing catalogs, the eastern North Pacific population was deemed most likely. This record coincides with shrinking Arctic sea ice due to climate change, suggesting whales may begin recolonizing the North Atlantic as barriers to mixing between populations decrease.
DouglasFishBull2014
This document summarizes a study that estimated the seasonal abundance and distribution of cetaceans off the coast of Southern California using data from 16 quarterly ship-based surveys between 2004-2008. The surveys covered an area of 238,494 km2 from nearshore waters to 700 km offshore. Abundance estimates were determined for the 11 most commonly encountered species based on 693 encounters, and were calculated separately for summer-fall and winter-spring periods as well as for shallow (<2000.5 m) and deep (≥2000.5 m) waters. Density estimates showed seasonal variations by depth for some species, with the highest densities generally occurring in summer-fall in shallow waters for species like blue whales and common dolphins.
Stephens_et_al
This document summarizes a study on the rockfish resources of the south central California coast. Researchers from California Polytechnic State University placed observers on party boats from 2003-2005 to record catch data by species, including catch per unit effort and mean size. They supplemented this with historical catch data from 1980-1998 from the California Department of Fish and Game and Pacific Gas & Electric. The study aims to analyze population trends over the past 25 years for various rockfish species in the region and compare sizes over time. Preliminary results found fluctuating catch rates but no consistent declining trends, except for bocaccio rockfish. Mean sizes were generally above maturity levels.
Jarvisetal bsb movements_01_mar10
This study analyzed historical tag and recapture data from over 8,600 barred sand bass tagged in southern California between the 1960s and 1990s to understand their spawning-related movements. The data suggest barred sand bass reside at spawning grounds like Huntington Beach Flats for approximately one month during peak spawning season. While most non-spawning season recaptures occurred within 1 km of spawning locations, migrant fish averaged 13 km in movement away from spawning sites after spawning. The study also found evidence of site fidelity, as barred sand bass tended to return to the same spawning locations in subsequent years.
Haemogregarine in turtle
This study examined three species of aquatic freshwater turtles in Costa Rica for haemogregarine infections. All turtles sampled were positive for intraerythrocytic haemogregarines, representing the first report of these parasites in turtles from Central America. Black river turtles had a significantly higher average parasitemia (0.34%) than white-lipped mud turtles (0.05%). Parasites in the single scorpion mud turtle examined were smaller and did not displace the host cell nucleus like those in the other two species. This is the first report of haemogregarines in the white-lipped mud turtle, scorpion mud turtle, and any Rhinoclemm
2014-pietrak-culture-of-sea-cucumbers-in-korea.pdf
This document reviews Korean hatchery culture techniques for sea cucumbers and their potential application to culturing the local sea cucumber species Cucumaria frondosa in the Northeast U.S. It describes the life history and biology of C. frondosa as well as Korean hatchery facilities, culture tanks, equipment, and techniques for spawning and rearing the Japanese sea cucumber Apostichopus japonicus which could potentially be adapted for culturing C. frondosa.
Turtle Nest Predation Poster
This study examined painted turtle spatial ecology at three ponds in Carbon County, Pennsylvania. Trapping data from 220 turtles showed that 28 (12.73%) migrated between ponds, with most movements occurring in summer and between Kingfisher Pond and other ponds. Radio tracking of 5 turtles in Mallard Pond found they remained there and favored deeper areas. Simulated nests showed 17% predation within a week at 50m from ponds, with predators including dogs, coyotes, and deer.
2010 araujo et al stranding of masturus lanceolatus
This document summarizes the stranding of a rare sunfish, Masturus lanceolatus, in the estuary of the Una River in Brazil. The fish was found alive but debilitated by local fishermen. Analysis revealed the fish had a high parasite load in its liver from nematodes and tapeworms, causing malnutrition as seen by its low body weight. It also showed signs of entanglement in fishing nets and shark attacks that mutilated its fins, hindering movement. The parasite infection and injuries likely caused the fish to drift and be washed against the reefs near the estuary before stranding. This represents the first recorded occurrence of this species on the coast of Pernambuco state in northeast
dietBHposter
Sharks are top predators, but little was known about bonnethead sharks' feeding ecology in Tampa Bay. The author studied the diets of 13 bonnethead sharks captured in Tampa Bay. The study found the main dietary components were blue crab, common spider crab, and seagrass, with seagrass having the highest index of relative importance. While seagrass made up most of the diets numerically, it is unclear if bonnetheads actively forage seagrass. More research with larger sample sizes is needed to better understand bonnethead feeding ecology in Tampa Bay and determine if environmental changes have impacted their diets.
Infective pentastomid larvae from Pygocentrus nattereri Kner
Infective pentastomid larvae from Pygocentrus nattereri Kner (Pisces, Characidae), taxonomy and epidemiology,
! 1!A Scientific Review of the Physiology of Pacific Salmo
! 1!
A Scientific Review of the Physiology of Pacific Salmon Migration
B. C. McKinney1
1 Department of Natural Sciences, University of South Carolina Beaufort, One University
Boulevard, Bluffton, South Carolina 29909, USA
Abstract For many generations, humans have altered practically every
ecosystem in the entire world. The footprint humans leave behind on ecosystems
on Earth has continuously matted the ecosystems and critical habitat in which all
species on Earth depend on for survival. When considering Pacific and Atlantic
salmon populations, the array of human caused stressors is responsible for the
population depletions across the United States and Canada. This review will
coordinate the impacts of river impoundments (i.e., hydropower systems) on
upstream and downstream migration as well as visit the impacts of natural and
human caused change on the quality of habitat in which salmonids inhabit through
all life stages.
Introduction
A variety of teleost species are classified within the Family Salmonidae under the Order
Salmoniformes. Salmonidae is comprised of a variety of trouts (Salmo spp.), chars (Salvelinus
spp.), graylings (Thymallus spp.), taimen (Parahucho spp.), and salmons (Salmo &
Oncorhynchus spp.). The anatomy of this family is similar to other ray-finned fish having
dorsal, pelvic, pectoral, anal, and dorsal fins, however they possess an additional fin posterior to
the dorsal called the adipose fin.
Salmonid lifecycles are very complex and have been a topic of research for many
generations (Briggs, 1953; Holmes & Stainer 1966; Vronskiy, 1972; Thompson & Sargent, 1977;
Healy, 1980; McCormick &Saunders, 1987; Murray & Rosenau, 1989; Nehlson et al., 1991). In
recent findings, the introduction of telemetry techniques and field sampling routines have given
! 2!
researchers insight about the duration, timing, and patterns of homing and staying (Healy, 1980;
Giorgi et al., 1997; Walker et al., 2016). Through the protection of the Endangered Species Act
(ESA) select Pacific salmon populations have been granted protection by federal regulations in
relation to the habitat that is essential to their survival (USNMFS 1995). In this review, relevant
available published literature will be compiled to discuss a variety of explanations towards the
physiology and morphological complexities associated with Pacific salmon.!
Overview of Salmon Biology
In this section, emphasis will focus on the evolutionary history of Salmon (see Groot &
Margolis, 1991, Hendry et al., 2000, and Waples et al., 2007 for more details). North America’s
populations of Pacific Salmon consist of five distinct species: chinook salmon (Onchorhynchus
tshawytscha), pink salmon (O. gorbusha), chum salmon (O. keta), coho salmon (O. kisutch), and
sockeye salmon (O. nerka). Pacific salmon are uniquely characterized as anadromous
(migratory) and semelaparous (i.e., die after spawning) spe ...
Temporal Variation in the Epiphytes of Laurencia obtusa and Cystoseira myrica...
Temporal Variation in the Epiphytes of Laurencia obtusa and Cystoseira myrica...the Egyptian Society for Environmental Sciences
Algal epiphytes were examined for 12 months at Shura El-Roweysia and several tidal levels on the shore
of South Sinai dominated by Laurencia obtusa and Cystoseira myrica. Sixty seven species of the
epiphytes were recorded (41 Bacillariophyta, 20 Cyanophyta, 3 Chlorophyta and 3 Pyrrhophyta). An
inverse relationship between percentage cover of L. obtusa and their epiphytes were observed to be
affected by desiccation stress due to frequent emersion of the intertidal flat and exposure to strong
radiation, while high cover percentage of C. myrica was associated with the high number of epiphytes.Primera Alimentación vs Genética en Salmón
1) The study examined genetic variation between early and late feeding Atlantic salmon from the River Shin in Scotland using 6 allozyme loci and 8 microsatellite markers.
2) Early feeding fish had higher rates of smolting and fewer parr compared to late feeding fish, showing different life history strategies between the groups.
3) Early and late feeding fish showed different allelic and genotypic distributions at both allozyme and microsatellite loci, with early feeders being more heterozygous on average. Higher heterozygosity was positively associated with earlier smolting and precocious maturation in male parr.
fishing down gulf of california coastal foodwebs (Sala et al, 2004)
This document summarizes evidence of "fishing down" coastal food webs in the Gulf of California over the past 30 years. Fisheries have shifted from catching large, long-lived predatory fish like sharks and groupers to smaller, short-lived species lower on the food chain. The maximum size of fish in catches has decreased 45 cm in just 20 years. While some total catches have increased, catch-per-unit-effort has declined for most species groups after 1980 due to a dramatic increase in fishing effort, particularly gillnets. This intensive fishing has not only impacted target species populations but also caused community-wide changes in fish assemblages. Coastal fisheries in the Gulf of California appear unsustainable
University Of Glasgow Iceland Expedition 2008
The document summarizes research conducted by the University of Glasgow Iceland Expedition at Skalanes Nature Reserve in 2008. The expedition aimed to study the reserve's flora and fauna to support sustainable tourism and education. Projects included creating bird guides, monitoring seabird populations like Arctic terns, and investigating vegetation like Arctic lupine. Methodologies were tested to routinely survey bird populations and monitor changes over time. The research helped develop the reserve's management plan and provided educational materials for visitors.
ENVS 120 Updated FINAL DRAFT
- Overfishing of rockfish populations off the west coast of the US since the 1960s drastically reduced stocks.
- Rockfish Conservation Areas (RCAs) were established in 2002 with regulations like catch limits, gear restrictions, and seasonal closures to protect habitat and restrict catch.
- Outreach programs educate fishermen on RCA rules and provide devices to return bycatch to reduce mortality. Regulations have proven moderately successful at reducing bycatch and deterring prohibited catches.
Diversity and distribution of seaweeds in Saint Martin Island, Bangladesh
This present investigation conducted on diversity and distribution analysis of the sub-littoral seaweed flora collected from January to June, 2007 from north part and south part of the Saint Martin Island, Bangladesh has revealed the presence of 37 seaweed taxa, 11 under Chlorophyceae, 14 under Phaeophyceae and 12 under Rhodophyceae. The distribution, diversity and abundance of seaweed flora fluctuate due to temperature, locations and species composition variations in Saint Martin Island.
migration of Fishes
1. Many fish species migrate long distances for reasons of feeding or breeding. This movement is known as fish migration.
2. Common migratory fish species include cod, herring, salmon, eel, hilsa, stickleback, lampreys, and tuna.
3. There are different types of migration including alimentory (for food), gametic (for reproduction), climatic (for climate), and osmoregulatory migrations.
Similar to Fish Spawning Aggregations in Alacranes Reef off Northern Yucatan Peninsula (20)
2014-pietrak-culture-of-sea-cucumbers-in-korea.pdf
2014-pietrak-culture-of-sea-cucumbers-in-korea.pdf
2010 araujo et al stranding of masturus lanceolatus
2010 araujo et al stranding of masturus lanceolatus
Infective pentastomid larvae from Pygocentrus nattereri Kner
Infective pentastomid larvae from Pygocentrus nattereri Kner
! 1!A Scientific Review of the Physiology of Pacific Salmo
! 1!A Scientific Review of the Physiology of Pacific Salmo
Temporal Variation in the Epiphytes of Laurencia obtusa and Cystoseira myrica...
Temporal Variation in the Epiphytes of Laurencia obtusa and Cystoseira myrica...
fishing down gulf of california coastal foodwebs (Sala et al, 2004)
fishing down gulf of california coastal foodwebs (Sala et al, 2004)
Diversity and distribution of seaweeds in Saint Martin Island, Bangladesh
Diversity and distribution of seaweeds in Saint Martin Island, Bangladesh
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定制(cardiff学位证书)英国卡迪夫大学毕业证本科学历原版一模一样
原版定制【微信:bwp0011】《(cardiff学位证书)英国卡迪夫大学毕业证本科学历》【微信:bwp0011】成绩单 、雅思、外壳、留信学历认证永久存档查询，采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。
【业务选择办理准则】
一、工作未确定，回国需先给父母、亲戚朋友看下文凭的情况，办理一份就读学校的毕业证【微信bwp0011】文凭即可
二、回国进私企、外企、自己做生意的情况，这些单位是不查询毕业证真伪的，而且国内没有渠道去查询国外文凭的真假，也不需要提供真实教育部认证。鉴于此，办理一份毕业证【微信bwp0011】即可
三、进国企，银行，事业单位，考公务员等等，这些单位是必需要提供真实教育部认证的，办理教育部认证所需资料众多且烦琐，所有材料您都必须提供原件，我们凭借丰富的经验，快捷的绿色通道帮您快速整合材料，让您少走弯路。
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
【关于价格问题（保证一手价格）】
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对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
ghmc zones and circle and why they are needed
The Greater Hyderabad Municipal Corporation (GHMC) plays a pivotal role in the administration and development of Hyderabad
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一比一原版(毕业证书)马来西亚双威大学毕业证如何办理
原版一模一样【微信：741003700 】【(毕业证书)马来西亚双威大学毕业证成绩单】【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
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三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
办理(毕业证书)马来西亚双威大学毕业证【微信：741003700 】外观非常简单，由纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理(毕业证书)马来西亚双威大学毕业证【微信：741003700 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理(毕业证书)马来西亚双威大学毕业证【微信：741003700 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理(毕业证书)马来西亚双威大学毕业证【微信：741003700 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
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Fish Spawning Aggregations in Alacranes Reef off Northern Yucatan Peninsula
- 1. Identifying reef fish spawning aggregations in Alacranes Reef, off northern Yucatan Peninsula, using the fishermen traditional ecological knowledge Alfonso Aguilar-Perera 1 , Carlos González-Salas 1 , Armín Tuz-Sulub 2 , Harold Villegas-Hernández 1 , María López- Gómez 1 Departamento de Biología Marina, Universidad Autónoma de Yucatán, Mérida, Yucatán, México Campus de Ciencias Biológica y Agropecuarias UADY
- 2. Worldwide, 164 spp aggregate to spawn (FSAs) Vulnerable: predictable space and time FSAs (140): 60% declining 20% no forming 20% “stable” (SCRFA 2006) Trends
- 3. How do we know about FSAs first hand? Fishermen accounts Body of knowledge (Wisdom) = Traditional Ecological Knowledge TEK Trends Johannes, Berkes
- 4. Studies incorporating TEK to know about FSAs (Cuba, Belize, Brazil) 35 aggregating species (mostly snappers & groupers) Western Atlantic: Trends
- 5. Elusive for managers and government Scarce studies (Caribbean, Pacific) Lack of Management (exceptions) FSAs in Mexico
- 7. How many species? Where? When (seasonality)? Phase 1: TEK: a) experience (wisdom): How many aggregation sites? OBJECTIVES
- 8. 27 km 14 km Study Area Alacranes Reef Desterrada Isla Pérez Pájaros y Chica Muertos
- 9. METHODS Semi-structured interviews based on protocols (Johannes 1999, Colin etal. 2003, Heyman et al. 2005), but adapted to local conditions (information used with extreme confidence avoiding to reveal precise positions of FSAs to general public) (1) which species (2) fishing relative importance, (3) fishing gear (4) Seasonality (months), and (5) approximate locations
- 10. Spawning Aggregation Sites Camaronero Sandwich Caribbean Tabasco Las Columnas El Puente H4 Marisol RESULTS
- 11. Grouper Spawning Seasonality Oct Sep Aug Jul Jun May Apr Mar Feb Jan Dec Nov Dec Oct Sep Aug Jul Jun May Apr Mar Feb Jan Dec Nov Dec Oct Sep Aug Jul Jun May Apr Mar Feb Jan Dec Nov Dec Oct Sep Aug Jul Jun May Apr Mar Feb Jan Dec Nov Dec
- 12. Snapper (and others) Seasonality Oct Sep Aug Jul Jun May Apr Mar Feb Jan Dec Nov Dec L. jocu O. chrysurus L. apodus L. griseus L. mahogoni C. sufflamen
- 13. RESULTS 13 species (mostly snappers and groupers) 8 sites (6 along leeward) 3 multi-specific aggregation sites (> 5 spp) Most important seasons: Spring & Summer
- 14. While, confirming info through SCUBA incursions is still necessary, TEK shows to be reliable since the seasonal patterns in Alacranes Reef are relatively similar to other areas (Cuba, Belize, Puerto Rico) Additionally, elaborate studies among sites involving: 1) tracking movements (of main species) using acoustics (telemetry), and 2) genetics Next step: confirming (following protocols, Colin et al., Heyman et al) FSAs and study their dynamics
- 15. Thank you!